ADOPTS WITH AMENDMENTS:

International Residential Code 2018 (IRC 2018)

Part I — Administrative

Part II — Definitions

Part III — Building Planning and Construction

Part IV — Energy Conservation

Part V — Mechanical

Part VI — Fuel Gas

Part VII — Plumbing

Part VIII — Electrical

Part IX — Referenced Standards

Heads up: There are no amended sections in this chapter.

Chapter 11 [RE] Energy Efficiency

AMENDMENT
This section has been amended at the state or city level.

Note:
The New York State Energy Conservation Construction Code (the "Energy Code") is adopted pursuant to Article 11 of the Energy Law. The Energy Code is set forth in Part 1240 of Title 19 of the New York Codes, Rules and Regulations ("Part 1240") and in the publications incorporated by reference in Part 1240. Those publications include, but are not limited to, the 2020 Energy Conservation Construction Code of New York State (the "2020 ECCCNYS"). The provisions of the Energy Code applicable to "residential buildings" are set forth in that part of the 2020 ECCCNYS denoted as the "ECCCNYS—Residential Provisions."

Chapter 11 is intended to be a restatement of the ECCCNYS—Residential Provisions and is included in this code as a convenience to the users of this code. However, the legally binding provisions of the Energy Code are as set forth in Part 1240 and the publications incorporated by reference in Part 1240, and in the event of any conflict between the provisions of the ECCCNYS—Residential Provisions and provisions set forth in Chapter 11, the provisions of the ECCCNYS—Residential Provisions will control.


[NY] N1101.1 Scope

AMENDMENT
This section has been amended at the state or city level.
This chapter regulates the energy efficiency for the design and construction of buildings regulated by this code.
Exceptions:
  1. Any of the following, provided that the energy use of the building is not increased:
    1. Storm windows installed over existing fenestration.
    2. Glass only replacements in an existing sash and frame.
    3. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are filled with insulation.
    4. Construction where the existing roof, wall or floor cavity is not exposed.
    5. Reroofing for roofs where neither the sheathing nor the insulation is exposed; roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
    6. Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates such conditioned space from the exterior shall not be removed.
    7. Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power.
    8. Alterations that replace only the bulb and ballast within the existing luminaires in a space provided that the alteration does not increase the installed interior lighting power.
  2. Historic buildings as defined in this chapter.

N1101.2 (R101.3) Intent

AMENDMENT
This section has been amended at the state or city level.

N1101.2 (R101.4) Intent

AMENDMENT
This section has been amended at the state or city level.
This chapter shall regulate the design and construction of new residential buildings; additions to, alterations of, and/or renovations of existing residential buildings; and additions to, alterations of, and/or renovations of building systems in existing residential buildings for the use and conservation of energy over the life of each such residential building.

     These provisions are intended to provide flexibility to permit the use of innovative approaches and techniques to achieve the objectives set forth in the preceding paragraph. However, nothing in Section N1101.2 shall be construed as permitting any building official, or any governmental unit or agency charged with the administration and enforcement of the Energy Code, to waive, vary, modify, or otherwise alter any standard or requirement of this code or any other standard or requirement of the Energy Code. Standards or requirements of the Energy Code may be varied or modified only pursuant to Section 11-106 of the New York State Energy Law.

     These provisions are not intended to abridge safety, health or environmental requirements contained in other applicable statutes, laws, rules, regulations, codes or ordinances. However, nothing in Section N1101.2 shall be construed as limiting the provisions of Section 11-103(3) of the New York State Energy Law, which provides that (1) any code, rule, or regulation promulgated or enacted prior to June 19, 1978, by any state agency other than the State Fire Prevention and Building Code Council, incorporating specific energy conservation requirements applicable to the construction of any building, is superseded by the Energy Code and (2) on and after June 19, 1978, the State Fire Prevention and Building Code Council, in accordance with the mandate under Article 11 of the New York State Energy Law, shall have exclusive authority among state agencies to promulgate a construction code incorporating energy conservation features.

N1101.3 (R101.5.1) Compliance Materials

AMENDMENT
This section has been amended at the state or city level.
The building official shall be permitted to approve specific computer software, worksheets, compliance manuals and other similar materials that meet the intent of this chapter.

[NY] N1101.3.1 (R101.5.1) Compliance Software

AMENDMENT
This section has been amended at the state or city level.
Compliance with this code can be demonstrated through the use of:
  1. Computer software that is developed by the United States Department of Energy (such as REScheck) specifically for the ECCCNYS—Residential Provisions, or
  2. Other software that shall have been expressly approved in writing by the New York Secretary of State as acceptable for demonstrating compliance with the ECCCNYS—Residential Provisions.

[NY] N1101.3.1.1 Software Requirements

AMENDMENT
This section has been amended at the state or city level.
Software programs used to demonstrate compliance with this code must indicate compliance with the ECCCNYS— Residential Provisions, and must reflect the actual requirements of the ECCCNYS—Residential Provisions.

[NY] N1101.3.1.1.1 (R101.5.2) Mandatory Provisions

AMENDMENT
This section has been amended at the state or city level.
The use of the software approach to demonstrate compliance with this code does not excuse compliance with any mandatory provision of the this code. When using the software approach to demonstrate compliance with the provisions of this code, compliance with all applicable mandatory provisions of the this code will still be required.

N1101.4 (R102.1.1) Above Code Programs

AMENDMENT
This section has been amended at the state or city level.

N1101.4 (R102.1.1) Reserved

AMENDMENT
This section has been amended at the state or city level.

N1101.5 (R103.2) (R105.2) Information on Construction Documents

AMENDMENT
This section has been amended at the state or city level.

Construction documents shall be drawn to scale on suitable material. Electronic media documents are permitted to be submitted when approved by the building official. Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include the following as applicable:

  1. Insulation materials and their R-values.
  2. Fenestration U-factors and solar heat gain coefficients (SHGC).
  3. Area-weighted U-factor and solar heat gain coefficient (SHGC) calculations.
  4. Mechanical system design criteria.
  5. Mechanical and service water heating systems and equipment types, sizes and efficiencies.
  6. Equipment and system controls.
  7. Duct sealing, duct and pipe insulation and location.
  8. Air sealing details.

N1101.5.1 (R103.2.1) (R105.2.1) Building Thermal Envelope Depiction

AMENDMENT
This section has been amended at the state or city level.
The building thermal envelope shall be represented on the construction documents.

N1101.6 (R202) Defined Terms

AMENDMENT
This section has been amended at the state or city level.

The following words and terms shall, for the purposes of this chapter, have the meanings shown herein.


ABOVE-GRADE WALL. A wall more than 50 percent above grade and enclosing conditioned space. This includes between-floor spandrels, peripheral edges of floors, roof and basement knee walls, dormer walls, gable end walls, walls enclosing a mansard roof and skylight shafts.

ACCESSIBLE. Admitting close approach as a result of not being guarded by locked doors, elevation or other effective means (see "Readily accessible").

ADDITION. An extension or increase in the conditioned space floor area, number of stories or height of a building or structure.

AIR BARRIER. One or more materials joined together in a continuous manner to restrict or prevent the passage of air through the building thermal envelope and its assemblies.

[NY] AIR-IMPERMEABLE INSULATION. An insulation having an air permeance equal to, or less than 0.02 L/s-m2 at 75 Pa pressure differential tested according to ASTM E2178 or E283.

ALTERATION. Any construction, retrofit or renovation to an existing structure other than repair or addition. Also, a change in a building, electrical, gas, mechanical or plumbing system that involves an extension, addition or change to the arrangement, type or purpose of the original installation.

AUTOMATIC. Self-acting, operating by its own mechanism when actuated by some impersonal influence, as, for example, a change in current strength, pressure, temperature or mechanical configuration (see "Manual").

BASEMENT WALL. A wall 50 percent or more below grade and enclosing conditioned space.

[NY] BUILDING. Any structure used or intended for supporting or sheltering any use or occupancy or for affording shelter to persons, animals or property, including any (1) mechanical systems, service water heating systems and electric power and lighting systems located in such structure, and (2) any mechanical systems, service water heating systems, and electric power and lighting systems located on the building site and supporting the building. The term "building" shall include, but shall not be limited to, factory manufactured homes (as defined in Section 372(8) of the Executive Law) and mobile homes (as defined in Section 372(13) of the Executive Law).

BUILDING SITE. A contiguous area of land that is under the ownership or control of one entity.

[NY] BUILDING THERMAL ENVELOPE. The exterior walls (above and below grade), floors, ceilings, roofs and any other building element assemblies that enclose conditioned space or provide a boundary between conditioned space and unconditioned space.

CIRCULATING HOT WATER SYSTEM. A specifically designed water distribution system where one or more pumps are operated in the service hot water piping to circulate heated water from the water-heating equipment to fixtures and back to the water-heating equipment.

CLIMATE ZONE. A geographical region based on climatic criteria as specified in this code.

CONDITIONED FLOOR AREA. The horizontal projection of the floors associated with the conditioned space.

[NY] CONDITIONED SPACE. An area or room that is enclosed within the building thermal envelope and that is directly or indirectly heated or cooled using fossil fuel or electricity as the energy source. Spaces are indirectly heated or cooled where they communicate through openings with conditioned spaces, where they are separated from conditioned spaces by uninsulated walls, floors or ceilings, or where they contain uninsulated ducts, piping or other sources of heating or cooling using fossil fuel or electricity.

CONTINUOUS AIR BARRIER. A combination of materials and assemblies that restrict or prevent the passage of air through the building thermal envelope.

CONTINUOUS INSULATION (ci). Insulating material that is continuous across all structural members without thermal bridges other than fasteners and service openings. It is installed on the interior or exterior, or is integral to any opaque surface, of the building envelope.

CRAWL SPACE WALL. The opaque portion of a wall that encloses a crawl space and is partially or totally below grade.

CURTAIN WALL. Fenestration products used to create an external nonload-bearing wall that is designed to separate the exterior and interior environments.

DEMAND RECIRCULATION WATER SYSTEM. A water distribution system having one or more recirculation pumps that pump water from a heated water supply pipe back to the heated water source through a cold-water supply pipe.

DUCT. A tube or conduit utilized for conveying air. The air passages of self-contained systems are not to be construed as air ducts.

DUCT SYSTEM. A continuous passageway for the transmission of air that, in addition to ducts, includes duct fittings, dampers, plenums, fans and accessory air-handling equipment and appliances.

DWELLING UNIT. A single unit providing complete independent living facilities for one or more persons, including permanent provisions for living, sleeping, eating, cooking and sanitation.

ENERGY ANALYSIS. A method for estimating the annual energy use of the proposed design and standard reference design based on estimates of energy use.

ENERGY COST. The total estimated annual cost for purchased energy for the building functions regulated by this code, including applicable demand charges.

ENERGY SIMULATION TOOL. An approved software program or calculation-based methodology that projects the annual energy use of a building.

[NY] ERI REFERENCE DESIGN. A version of the rated design that meets the minimum requirements of the 2006 International Energy Conservation Code, and that establishes the index value of 100 on the Energy Rating Index scale.

EXTERIOR WALL. Walls including both above-grade walls and basement walls.

FENESTRATION. Products classified as either vertical fenestration or skylights.

Skylights. Glass or other transparent or translucent glazing material installed at a slope of less than 60 degrees (1.05 rad) from horizontal.

Vertical fenestration. Windows that are fixed or operable, opaque doors, glazed doors, glazed block and combination opaque/glazed doors composed of glass or other transparent or translucent glazing materials and installed at a slope of not less than 60 degrees (1.05 rad) from horizontal.

FENESTRATION PRODUCT, SITE-BUILT. A fenestration designed to be made up of field-glazed or field-assembled units using specific factory cut or otherwise factory-formed framing and glazing units. Examples of site-built fenestration include storefront systems, curtain walls, and atrium roof systems.

HEATED SLAB. Slab-on-grade construction in which the heating elements, hydronic tubing, or hot air distribution system is in contact with, or placed within or under, the slab.

HIGH-EFFICACY LAMPS. Compact fluorescent lamps, light-emitting diode (LED) lamps, T-8 or smaller diameter linear fluorescent lamps, or other lamps with an efficacy of not less than the following:

  1. 60 lumens per watt for lamps over 40 watts.
  2. 50 lumens per watt for lamps over 15 watts to 40 watts.
  3. 40 lumens per watt for lamps 15 watts or less.
[NY] HISTORIC BUILDING. The term "Historic building" means an existing building or structure that is one or more of the following:
  1. Listed in the New York State Register of Historic Places, either individually or as a contributing building to a historic district.
  2. Listed in the National Register of Historic Places, either individually or as a contributing building to a historic district.
  3. Determined to be eligible for listing in either the New York State or National Register of Historic Places, either individually or as a contributing building to a historic district, by the New York State Commissioner of Parks, Recreation and Historic Preservation.
  4. Determined to be eligible for listing in the National Register of Historic Places, either individually or as a contributing building to a historic district, by the U.S. Secretary of the Interior.

INFILTRATION. The uncontrolled inward air leakage into a building caused by the pressure effects of wind or the effect of differences in the indoor and outdoor air density or both.

INSULATED SIDING. A type of continuous insulation with manufacturer-installed insulating material as an integral part of the cladding product having an R-value of not less than R-2.

INSULATING SHEATHING. An insulating board with a core material having an R-value of not less than R-2.

LABELED. Equipment, materials or products to which have been affixed a label, seal, symbol or other identifying mark of a nationally recognized testing laboratory, approved agency or other organization concerned with product evaluation that maintains periodic inspection of the production of such labeled items and whose labeling indicates either that the equipment, material or product meets identified standards or has been tested and found suitable for a specified purpose.

LISTED. Equipment, materials, products or services included in a list published by an organization acceptable to the building official and concerned with evaluation of products or services that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services and where the listing states either that the equipment, material, product or service meets identified standards or has been tested and found suitable for a specified purpose.

LOW-VOLTAGE LIGHTING. Lighting equipment powered through a transformer such as a cable conductor, a rail conductor and track lighting.

MANUAL. Capable of being operated by personal intervention (see "Automatic").

OPAQUE DOOR. A door that is not less than 50-percent opaque in surface area.

PROPOSED DESIGN. A description of the proposed building used to estimate annual energy use for determining compliance based on total building performance.

RATED DESIGN. A description of the proposed building used to determine the energy rating index.

READILY ACCESSIBLE. Capable of being reached quickly for operation, renewal or inspection without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders or access equipment (see "Accessible").

REPAIR. The reconstruction or renewal of any part of an existing building for the purpose of its maintenance or to correct damage.

REROOFING. The process of recovering or replacing an existing roof covering. See "Roof recover" and "Roof replacement."

[NY] RESIDENTIAL BUILDING. For this code, a "residential building" includes:
  1. Detached one-family dwellings having not more than three stories above grade plane;
  2. Detached two-family dwellings having not more than three stories above grade plane;
  3. Buildings that (i) consist of three or more attached townhouse units and (ii) have not more than three stories above grade plane;
  4. Buildings that (i) are classified in accordance with Chapter 3 of the Building Code of New York State in Group R-2, R-3 or R-4 and (ii) have not more than three stories above grade plane;
  5. Factory-manufactured homes (as defined in Section 372(8) of the New York State Executive Law); and
  6. Mobile homes (as defined in Section 372(13) of the New York State Executive Law).
     For the purposes of this definition of the term "residential building," the term "townhouse unit" means a single-family dwelling unit constructed in a group of three or more attached units in which each unit: (1) extends from the foundation to roof, (2) has open space on at least two sides, and (3) has a separate means of egress.

ROOF ASSEMBLY. A system designed to provide weather protection and resistance to design loads. The system consists of a roof covering and roof deck or a single component serving as both the roof covering and the roof deck. A roof assembly includes the roof covering, underlayment, and roof deck, and can also include a thermal barrier, ignition barrier, insulation or a vapor retarder.

ROOF RECOVER. The process of installing an additional roof covering over a prepared existing roof covering without removing the existing roof covering.

ROOF REPAIR. Reconstruction or renewal of any part of an existing roof for the purposes of its maintenance.

ROOF REPLACEMENT. The process of removing the existing roof covering, repairing any damaged substrate and installing a new roof covering.

R-VALUE (THERMAL RESISTANCE). The inverse of the time rate of heat flow through a body from one of its bounding surfaces to the other surface for a unit temperature difference between the two surfaces, under steady state conditions, per unit area (h • ft2 • °F/Btu) [(m2 • K)/W].

SERVICE WATER HEATING. Supply of hot water for purposes other than comfort heating.

SOLAR HEAT GAIN COEFFICIENT (SHGC). The ratio of the solar heat gain entering the space through the fenestration assembly to the incident solar radiation. Solar heat gain includes directly transmitted solar heat and absorbed solar radiation that is then reradiated, conducted or convected into the space.

[NY] STANDARD REFERENCE DESIGN. A version of the proposed design that meets the minimum prescriptive and mandatory baseline requirements of this code. The standard reference design, as the code baseline, is used to determine the maximum allowable annual energy use requirement for compliance. The proposed design is measured against the standard reference design in an annual energy use simulation and is based on total building performance. Parameters of the standard reference design and the proposed design are specified in Tables contained in Section R405.

SUNROOM. A one-story structure attached to a dwelling with a glazing area in excess of 40 percent of the gross area of the structure's exterior walls and roof.

THERMAL ISOLATION. Physical and space conditioning separation from conditioned spaces. The conditioned spaces shall be controlled as separate zones for heating and cooling or conditioned by separate equipment.

THERMOSTAT. An automatic control device used to maintain temperature at a fixed or adjustable set point.

U-FACTOR (THERMAL TRANSMITTANCE). The coefficient of heat transmission (air to air) through a building component or assembly, equal to the time rate of heat flow per unit area and unit temperature difference between the warm side and cold side air films (Btu/h • ft2 • °F) [W/(m2 • K)].

VENTILATION. The natural or mechanical process of supplying conditioned or unconditioned air to, or removing such air from, any space.

VENTILATION AIR. That portion of supply air that comes from outside (outdoors) plus any recirculated air that has been treated to maintain the desired quality of air within a designated space.

VISIBLE TRANSMITTANCE [VT]. The ratio of visible light entering the space through the fenestration product assembly to the incident visible light, Visible Transmittance, includes the effects of glazing material and frame and is expressed as a number between 0 and 1.

WHOLE HOUSE MECHANICAL VENTILATION SYSTEM. An exhaust system, supply system, or combination thereof that is designed to mechanically exchange indoor air with outdoor air when operating continuously or through a programmed intermittent schedule to satisfy the whole house ventilation rates.

ZONE. A space or group of spaces within a building with heating or cooling requirements that are sufficiently similar so that desired conditions can be maintained throughout using a single controlling device.

N1101.7 (R301.1) Climate Zones

AMENDMENT
This section has been amended at the state or city level.

N1101.7 (R301.1) Climate Zones

AMENDMENT
This section has been amended at the state or city level.
Climate zones from Table N1101.7 shall be used for determining the applicable requirements in Sections N1101 through N1111.

[NY] TABLE N1101.7 (R301.1)
NEW YORK STATE CLIMATE ZONES BY COUNTY
Zone 4A Zone 5A Zone 6A
Bronx Albany Allegany
Kings Cayuga Broome
Nassau Chautauqua Cattaraugus
New York Chemung Chenango
Queens Columbia Clinton
Richmond Cortland Delaware
Suffolk Dutchess Essex
Westchester Erie Franklin
Genessee Fulton
Greene Hamilton
Livingston Herkimer
Monroe Jefferson
Niagara Lewis
Onondaga Madison
Ontario Montgomery
Orange Oneida
Orleans Otsego
Oswego Schoharie
Putnam Schuyler
Rensselaer Steuben
Rockland St. Lawrence
Saratoga Sullivan
Schenectady Tompkins
Seneca Ulster
Tioga Warren
Washington Wyoming
Wayne
Yates

N1101.7.1 (R301.2) Warm Humid Counties

AMENDMENT
This section has been amended at the state or city level.

N1101.7.2 (R301.3) International Climate Zones

AMENDMENT
This section has been amended at the state or city level.

N1101.8 (R301.4) Tropical Climate Zone

AMENDMENT
This section has been amended at the state or city level.

[NY] N1101.8 (R301.4) Reserved

AMENDMENT
This section has been amended at the state or city level.
The interior design temperatures used for heating and cooling load calculations shall be a maximum of 72°F (22°C) for heating and minimum of 75°F (24°C) for cooling.
Materials, systems and equipment shall be identified in a manner that will allow a determination of compliance with the applicable provisions of this code.

An R-value identification mark shall be applied by the manufacturer to each piece of building thermal envelope insulation that is 12 inches (305 mm) or greater in width. Alternatively, the insulation installers shall provide a certification that indicates the type, manufacturer and R-value of insulation installed in each element of the building thermal envelope. For blown-in or sprayed fiberglass and cellulose insulation, the initial installed thickness, settled thickness, settled R-value, installed density, coverage area and number of bags installed shall be indicated on the certification. For sprayed polyurethane foam (SPF) insulation, the installed thickness of the areas covered and the R-value of the installed thickness shall be indicated on the certification. For insulated siding, the R-value shall be on a label on the product's package and shall be indicated on the certification. The insulation installer shall sign, date and post the certification in a conspicuous location on the job site.

Exception: For roof insulation installed above the deck, the R-value shall be labeled as required by the material standards specified in Table R906.2.

The thickness of blown-in or sprayed fiberglass and cellulose roof and ceiling insulation shall be written in inches (mm) on markers that are installed at not less than one for every 300 square feet (28 m2) throughout the attic space. The markers shall be affixed to the trusses or joists and marked with the minimum initial installed thickness with numbers not less than 1 inch (25 mm) in height. Each marker shall face the attic access opening. The thickness and installed R-value of sprayed polyurethane foam insulation shall be indicated on the certification provided by the insulation installer.
Insulating materials shall be installed such that the manufacturer's R-value mark is readily observable at inspection.

U-factors of fenestration products such as windows, doors and skylights shall be determined in accordance with NFRC 100.

Exception: Where required, garage door U-factors shall be determined in accordance with either NFRC 100 or ANSI/DASMA 105.

U-factors shall be determined by an accredited, independent laboratory, and labeled and certified by the manufacturer.

Products lacking such a labeled U-factor shall be assigned a default U-factor from Table N1101.10.3(1) or N1101.10.3(2). The solar heat gain coefficient (SHGC) and visible transmittance (VT) of glazed fenestration products such as windows, glazed doors and skylights shall be determined in accordance with NFRC 200 by an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled SHGC or VT shall be assigned a default SHGC or VT from Table N1101.10.3(3).

TABLE N1101.10.3(1) [R303.1.3(1)]

DEFAULT GLAZED WINDOW, GLASS DOOR AND SKYLIGHT U-FACTORS

FRAME TYPEWINDOW AND
GLASS DOOR
SKYLIGHT
Single
pane
Double
pane
SingleDouble
Metal1.200.802.001.30
Metal with Thermal Break1.100.651.901.10
Nonmetal or Metal Clad0.950.551.751.05
Glazed Block0.60

TABLE N1101.10.3(2) [R303.1.3(2)]

DEFAULT OPAQUE DOOR U-FACTORS

DOOR TYPEOPAQUE
U-FACTOR
Uninsulated Metal1.20
Insulated Metal0.60
Wood0.50
Insulated, nonmetal edge, not exceeding 45% glazing,
any glazing double pane
0.35

TABLE N1101.10.3(3) [R303.1.3(3)]

DEFAULT GLAZED FENESTRATION SHGC AND VT

SINGLE GLAZEDDOUBLE GLAZEDGLAZED
BLOCK
ClearTintedClearTinted
SHGC0.80.70.70.60.6
VT0.60.30.60.30.6
The thermal resistance, R-value, of insulation shall be determined in accordance with Part 460 of US-FTC CFR Title 16 in units of h • ft2 • °F/Btu at a mean temperature of 75°F (24°C).
The thermal resistance, R-value, of insulated siding shall be determined in accordance with ASTM C1363. Installation for testing shall be in accordance with the manufacturer's instructions.
Materials, systems and equipment shall be installed in accordance with the manufacturer's instructions and this code.
Insulation applied to the exterior of basement walls, crawl space walls and the perimeter of slab-on-grade floors shall have a rigid, opaque and weather-resistant protective covering to prevent the degradation of the insulation's thermal performance. The protective covering shall cover the exposed exterior insulation and extend not less than 6 inches (153 mm) below grade.
Maintenance instructions shall be furnished for equipment and systems that require preventive maintenance. Required regular maintenance actions shall be clearly stated and incorporated on a readily accessible label. The label shall include the title or publication number for the operation and maintenance manual for that particular model and type of product.

Projects shall comply with one of the following:

  1. Sections N1101.14 through N1104.
  2. Section N1105 and the provisions of Sections N1101.14 through N1104 indicated as "Mandatory."
  3. The energy rating index (ERI) approach in Section N1106.

N1101.13.1 (R401.2.1) Tropical Zone

AMENDMENT
This section has been amended at the state or city level.

N1101.13.1 (R401.2.1) Reserved

AMENDMENT
This section has been amended at the state or city level.

A permanent certificate shall be completed by the builder or other approved party and posted on a wall in the space where the furnace is located, a utility room or an approved location inside the building. Where located on an electrical panel, the certificate shall not cover or obstruct the visibility of the circuit directory label, service disconnect label or other required labels. The certificate shall indicate the predominant R-values of insulation installed in or on ceilings, roofs, walls, foundation components such as slabs, basement walls, crawl space walls and floors, and ducts outside conditioned spaces; U-factors of fenestration and the solar heat gain coefficient (SHGC) of fenestration, and the results from any required duct system and building envelope air leakage testing performed on the building. Where there is more than one value for each component, the certificate shall indicate the value covering the largest area. The certificate shall indicate the types and efficiencies of heating, cooling and service water heating equipment. Where a gas-fired unvented room heater, electric furnace, or baseboard electric heater is installed in the residence, the certificate shall indicate "gas-fired unvented room heater," "electric furnace" or "baseboard electric heater," as appropriate. An efficiency shall not be indicated for gas-fired unvented room heaters, electric furnaces and electric baseboard heaters.

[NY] N1102.1 (R402.1) General (Prescriptive)

AMENDMENT
This section has been amended at the state or city level.

The building thermal envelope shall comply with the requirements of Sections N1102.1.1 through N1102.1.5.

Exceptions:
  1. The following low-energy buildings, or portions thereof, separated from the remainder of the building by building thermal envelope assemblies complying with this section shall be exempt from the building thermal envelope provisions of Sections N1102.1.1 through N1102.1.5.
    1. Those with a peak design rate of energy usage less than 3.4 Btu/h • ft2 (10.7 W/m2) or 1.0 watt/ft2 of floor area for space-conditioning purposes.
    2. Those that do not contain conditioned space.
  2. Log homes designed in accordance with ICC 400.
Wall assemblies in the building thermal envelope shall comply with the vapor retarder requirements of Section R702.7.

[NY] N1102.1.2 (R402.1.2) Insulation and Fenestration Criteria

AMENDMENT
This section has been amended at the state or city level.

The building thermal envelope shall meet the requirements of Table N1102.1.2 based on the climate zone specified in Section N1101.7. In Climate Zone 6, the building thermal envelope shall meet either the requirements of the Climate Zone 6 "option 1" row in Table N1102.1.2 or the requirements of the Climate Zone 6 "option 2" row in Table N1102.1.2.


[NY] TABLE N1102.1.2 (R402.1.2)

INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENTa

CLIMATE
ZONE
FENESTRATION
U-FACTORb
SKYLIGHTb
U-FACTOR
GLAZED
FENESTRATION
SHGCb, e
CEILING
R-VALUE
WOOD
FRAME WALL
R-VALUE
MASS
WALL
R-VALUEi
FLOOR
R-VALUE
BASEMENTc
WALL
R-VALUE
SLABd
R-VALUE
& DEPTH
CRAWL
SPACEc
WALL
R-VALUE
40.320.550.404920 or 13 + 5h8/131910/1310, 2 ft10/13
5 0.300.55NR4920 or 13 + 5h13/1730g15/1910, 2 ft15/19
6 Option 10.300.55NR4920 + 5h or 13 + 10h15/2030g15/1910, 4 ft15/19
6 Option 2 0.280.55NR 60 23 cavity19/21 30g15/1910, 4 ft15/19

For SI: 1 foot = 304.8 mm.

NR = Not Required.

  1. R-values are minimums. U-factors and SHGC are maximums. Where insulation is installed in a cavity that is less than the label or design thickness of the insulation, the installed R-value of the insulation shall be not less than the R-value specified in the table.
  2. The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration.

  3. "10/13" means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation on the interior of the basement wall. "15/19" means R-15 continuous insulation on the interior or exterior of the home or R-19 cavity insulation at the interior of the basement wall. Alternatively, compliance with "15/19" shall be R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the home.
  4. R-5 insulation shall be provided under the full slab area of a heated slab in addition to the required slab edge insulation R-value for slabs. as indicated in the table. The slab edge insulation for heated slabs shall not be required to extend below the slab.
  5. Reserved.
  6. Reserved.
  7. Alternatively, insulation sufficient to fill the framing cavity and providing not less than an R-value of R-19.
  8. The first value is cavity insulation, the second value is continuous insulation. Therefore, as an example, "13+5" means R-13 cavity insulation plus R-5 continuous insulation.
  9. Mass walls shall be in accordance with Section R402.2.5. The second R-value applies where more than half of the insulation is on the interior of the mass wall.
Insulation material used in layers, such as framing cavity insulation or continuous insulation, shall be summed to compute the corresponding component R-value. The manufacturer's settled R-value shall be used for blown-in insulation. Computed R-values shall not include an R-value for other building materials or air films. Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Table N1102.1.2, the manufacturer's labeled R-value for insulated siding shall be reduced by R-0.6.

N1102.1.4 (R402.1.4) U-factor Alternative

AMENDMENT
This section has been amended at the state or city level.

An assembly with a U-factor equal to or less than that specified in Table N1102.1.4 shall be permitted as an alternative to the R-value in Table N1102.1.2.

[NY] TABLE N1102.1.4 (R402.1.4)

EQUIVALENT U-FACTORSa

CLIMATE
ZONE
FENESTRATION
U-FACTOR
SKYLIGHT
U-FACTOR
CEILING
U-FACTOR
FRAME
WALL
U-FACTOR
MASS WALL
U-FACTORb
FLOOR
U-FACTOR
BASEMENT
WALL
U-FACTOR
CRAWL
SPACE WALL
U-FACTOR
40.320.550.0260.0600.0980.0470.0590.065
50.300.550.0260.0600.0820.0330.0500.055
60.300.550.0260.0450.0600.0330.0500.055
  1. Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source.
  2. Mass walls shall be in accordance with Section N1102.2.5 (R402.2.5). Where more than half the insulation is on the interior, the mass wall U-factors shall not exceed 0.087 in Climate Zone 4 except Marine, 0.065 in Climate Zone 5 and Marine 4, and 0.057 in Climate Zone 6.
  3. In warm-humid locations as defined by Figure N1101.7 and Table N1101.7, the basement wall U-factor shall not exceed 0.360.
Where the total building thermal envelope UA, the sum of U-factor times assembly area, is less than or equal to the Total UA resulting from multiplying the U-factors in Table N1102.1.4 by the same assembly area as in the proposed building, the building shall be considered to be in compliance with Table N1102.1.2. The UA calculation shall be performed using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials. In addition to UA compliance, SHGC requirements shall be met.
In addition to the requirements of Section N1102.1, insulation shall meet the specific requirements of Sections N1102.2.1 through N1102.2.13.
Where Section R1102.1.2 requires R-38 insulation in the ceiling, installing R-30 insulation over 100 percent of the ceiling area requiring insulation shall satisfy the requirement for R-38 insulation wherever the full height of uncompressed R-30 insulation extends over the wall top plate at the eaves. Where Section N1102.1.2 requires R-49 insulation in the ceiling, installing R-38 insulation over 100 percent of the ceiling area requiring insulation shall satisfy the requirement for R-49 insulation wherever the full height of uncompressed R-38 insulation extends over the wall top plate at the eaves. This reduction shall not apply to the U-factor alternative approach in Section N1102.1.4 and the Total UA alternative in Section N1102.1.5.
Where Section N1102.1.2 requires insulation R-values greater than R-30 in the ceiling and the design of the roof/ceiling assembly does not allow sufficient space for the required insulation, the minimum required insulation R-value for such roof/ceiling assemblies shall be R-30. Insulation shall extend over the top of the wall plate to the outer edge of such plate and shall not be compressed. This reduction of insulation from the requirements of Section N1102.1.2 shall be limited to 500 square feet (46 m2) or 20 percent of the total insulated ceiling area, whichever is less. This reduction shall not apply to the U-factor alternative approach in Section N1102.1.4 and the Total UA alternative in Section N1102.1.5.
For air-permeable insulations in vented attics, a baffle shall be installed adjacent to soffit and eave vents. Baffles shall maintain an opening equal or greater than the size of the vent. The baffle shall extend over the top of the attic insulation. The baffle shall be permitted to be any solid material.

Access doors from conditioned spaces to unconditioned spaces such as attics and crawl spaces shall be weatherstripped and insulated to a level equivalent to the insulation on the surrounding surfaces. Access that prevents damaging or compressing the insulation shall be provided to all equipment. Where loose-fill insulation is installed, a wood-framed or equivalent baffle or retainer shall be installed to prevent the loose-fill insulation from spilling into the living space when the attic access is opened. The baffle or retainer shall provide a permanent means of maintaining the installed R-value of the loose-fill insulation.

Exception: Vertical doors providing access from conditioned spaces to unconditioned spaces that comply with the fenestration requirements of Table N1102.1.2 based on the applicable climate zone specified in Section N1101.7.

Mass walls where used as a component of the building thermal envelope shall be one of the following:

  1. Above-ground walls of concrete block, concrete, insulated concrete form, masonry cavity, brick but not brick veneer, adobe, compressed earth block, rammed earth, solid timber or solid logs.
  2. Any wall having a heat capacity greater than or equal to 6 Btu/ft2 • °F (123 kJ/m2 • K).

Steel-frame ceilings, walls, and floors shall comply with the insulation requirements of Table N1102.2.6 or the U-factor requirements of Table N1102.1.4. The calculation of the U-factor for a steel-frame envelope assembly shall use a series-parallel path calculation method.

TABLE N1102.2.6 (R402.2.6)

STEEL-FRAME CEILING, WALL AND FLOOR INSULATION R-VALUES

WOOD FRAME
R-VALUE
REQUIREMENT
COLD-FORMED STEEL-FRAME
EQUIVALENT R-VALUEa
Steel Truss Ceilingsb
R-30R-38 or R-30 + 3 or R-26 + 5
R-38R-49 or R-38 + 3
R-49R-38 + 5
Steel Joist Ceilingsb
R-30R-38 in 2 × 4 or 2 × 6 or 2 × 8 R-49
in any framing
R-38R-49 in 2 × 4 or 2 × 6 or 2 × 8 or 2 × 10
Steel-Framed Wall, 16 inches on center
R-13R-13 + 4.2 or R-21 + 2.8 or
R-0 + 9.3 or R-15 + 3.8 or R-21 + 3.1
R-13 + 3R-0 + 11.2 or R-13 + 6.1 or R-15 + 5.7 or
R-19 + 5.0 or R-21 + 4.7
R-20R-0 + 14.0 or R-13 + 8.9 or R-15 + 8.5 or
R-19 + 7.8 or R-19 + 6.2 or R-21 + 7.5
R-20 + 5R-13 + 12.7 or R-15 + 12.3 or R-19 + 11.6 or
R-21 + 11.3 or R-25 + 10.9
R-21R-0 + 14.6 or R-13 + 9.5 or R-15 + 9.1 or
R-19 + 8.4 or R-21 + 8.1 or R-25 + 7.7
Steel-Framed Wall, 24 inches on center
R-13R-0 + 9.3 or R-13 + 3.0 or R-15 + 2.4
R-13 + 3R-0 + 11.2 or R-13 + 4.9 or R-15 + 4.3 or
R-19 + 3.5 or R-21 + 3.1
R-20R-0 + 14.0 or R-13 + 7.7 or R-15 + 7.1 or
R-19 + 6.3 or R-21 + 5.9
R-20 + 5R-13 + 11.5 or R-15 + 10.9 or R-19 + 10.1 or
R-21 + 9.7 or R-25 + 9.1
R-21R-0 + 14.6 or R-13 + 8.3 or R-15 + 7.7 or
R-19 + 6.9 or R-21 + 6.5 or R-25 + 5.9
Steel Joist Floor
R-13R-19 in 2 × 6, or R-19 + 6 in 2 × 8 or 2 × 10
R-19R-19 + 6 in 2 × 6, or R-19 + 12 in 2 × 8 or 2 × 10
  1. The first value is cavity insulation R-value, the second value is continuous insulation R-value. Therefore, for example, "R-30+3" means R-30 cavity insulation plus R-3 continuous insulation.
  2. Insulation exceeding the height of the framing shall cover the framing.
Where Section N1102.1.2 requires continuous insulation on exterior walls and structural sheathing covers 40 percent or less of the gross area of all exterior walls, the required continuous insulation R-value shall be permitted to be reduced by an amount necessary, but not more than R-3, to result in a consistent total sheathing thickness on areas of the walls covered by structural sheathing. This reduction shall not apply to the U-factor alternative in Section N1102.1.4 and the Total UA alternative in Section N1102.1.5.

Floor framing-cavity insulation shall be installed to maintain permanent contact with the underside of the subfloor decking.

Exception: As an alternative, the floor framing-cavity insulation shall be in contact with the topside of sheathing or continuous insulation installed on the bottom side of floor framing where combined with insulation that meets or exceeds the minimum wood frame wall R-value in Table N1102.1.2 and that extends from the bottom to the top of all perimeter floor framing members.

Walls associated with conditioned basements shall be insulated from the top of the basement wall down to 10 feet (3048 mm) below grade or to the basement floor, whichever is less. Walls associated with unconditioned basements shall comply with this requirement except where the floor overhead is insulated in accordance with Sections N1102.1.2 and N1102.2.8.
Slab-on-grade floors with a floor surface less than 12 inches (305 mm) below grade shall be insulated in accordance with Table N1102.1.2. The insulation shall extend downward from the top of the slab on the outside or inside of the foundation wall. Insulation located below grade shall be extended the distance provided in Table N1102.1.2 by any combination of vertical insulation, insulation extending under the slab or insulation extending out from the building. Insulation extending away from the building shall be protected by pavement or by not less than 10 inches (254 mm) of soil. The top edge of the insulation installed between the exterior wall and the edge of the interior slab shall be permitted to be cut at a 45-degree (0.79 rad) angle away from the exterior wall. Slab-edge insulation is not required in jurisdictions designated by the building official as having a very heavy termite infestation.
As an alternative to insulating floors over crawl spaces, crawl space walls shall be insulated provided that the crawl space is not vented to the outdoors. Crawl space wall insulation shall be permanently fastened to the wall and shall extend downward from the floor to the finished grade elevation and then vertically or horizontally for not less than an additional 24 inches (610 mm). Exposed earth in unvented crawl space foundations shall be covered with a continuous Class I vapor retarder in accordance with this code. Joints of the vapor retarder shall overlap by 6 inches (153 mm) and be sealed or taped. The edges of the vapor retarder shall extend not less than 6 inches (153 mm) up the stem walls and shall be attached to the stem walls.
Insulation shall not be required on the horizontal portion of a foundation that supports a masonry veneer.

Sunrooms enclosing conditioned space shall meet the insulation requirements of this code.

Exception: For sunrooms with thermal isolation, and enclosing conditioned space, the following exceptions to the insulation requirements of this code shall apply:

  1. The minimum ceiling insulation R-values shall be R-19 in Climate Zones 1 through 4 and R-24 in Climate Zones 5 through 8.
  2. The minimum wall insulation R-value shall be R-13 in all climate zones. Walls separating a sunroom with a thermal isolation from conditioned space shall comply with the building thermal envelope requirements of this code.
In addition to the requirements of Section N1102, fenestration shall comply with Sections N1102.3.1 through N1102.3.5.
An area-weighted average of fenestration products shall be permitted to satisfy the U-factor requirements.

An area-weighted average of fenestration products more than 50-percent glazed shall be permitted to satisfy the SHGC requirements.

Dynamic glazing shall be permitted to satisfy the SHGC requirements of Table N1102.1.2 provided that the ratio of the higher to lower labeled SHGC is greater than or equal to 2.4, and the dynamic glazing is automatically controlled to modulate the amount of solar gain into the space in multiple steps. Dynamic glazing shall be considered separately from other fenestration, and area-weighted averaging with other fenestration that is not dynamic glazing shall be prohibited.

Exception: Dynamic glazing shall not be required to comply with this section where both the lower and higher labeled SHGC comply with the requirements of Table N1102.1.2.

Not greater than 15 square feet (1.4 m2) of glazed fenestration per dwelling unit shall be exempt from the U-factor and SHGC requirements in Section N1102.1.2. This exemption shall not apply to the U-factor alternative in Section N1102.1.4 and the Total UA alternative in Section N1102.1.5.
One side-hinged opaque door assembly not greater than 24 square feet (2.22 m2) in area shall be exempt from the U-factor requirement in Section N1102.1.2. This exemption shall not apply to the U-factor alternative in Section N1102.1.4 and the Total UA alternative in Section N1102.1.5.

Sunrooms enclosing conditioned space shall comply with the fenestration requirements of this code.

New fenestration separating the sunroom with thermal isolation from conditioned space shall comply with the building thermal envelope requirements of this code.

Exception: In Climate Zones 2 through 8, for sunrooms with thermal isolation and enclosing conditioned space, the fenestration U-factor shall not exceed 0.45 and the skylight U-factor shall not exceed 0.70.

N1102.4 (R402.4) Air Leakage (Mandatory)

AMENDMENT
This section has been amended at the state or city level.
The building thermal envelope shall be constructed to limit air leakage in accordance with the requirements of Sections N1102.4.1 through N1102.4.6.
The building thermal envelope shall comply with Sections N1102.4.1.1 and N1102.4.1.2. The sealing methods between dissimilar materials shall allow for differential expansion and contraction.

N1102.4.1.1 (R402.4.1.1) Installation

AMENDMENT
This section has been amended at the state or city level.

The components of the building thermal envelope as indicated in Table N1102.4.1.1 shall be installed in accordance with the manufacturer's instructions and the criteria indicated in Table N1102.4.1.1, as applicable to the method of construction. Where required by the building official, an approved third party shall inspect all components and verify compliance.


TABLE N1102.4.1.1 (R402.4.1.1)
AIR BARRIER AND INSULATION INSTALLATIONa

COMPONENTAIR BARRIER CRITERIAINSULATION INSTALLATION CRITERIA
General requirementsA continuous air barrier shall be installed in the building
envelope.
The exterior thermal envelope contains a continuous air
barrier.
Breaks or joints in the air barrier shall be sealed.
Air-permeable insulation shall not be used as a sealing
material.
Ceiling/atticThe air barrier in any dropped ceiling or soffit shall be
aligned with the insulation and any gaps in the air barrier
sealed.
Access openings, drop down stairs or knee wall doors to
unconditioned attic spaces shall be sealed.
The insulation in any dropped ceiling/soffit shall be
aligned with the air barrier.
WallsThe junction of the foundation and sill plate shall be sealed.
The junction of the top plate and the top of exterior walls
shall be sealed.
Knee walls shall be sealed.
Cavities within corners and headers of frame walls
shall be insulated by completely filling the cavity with
a material having a thermal resistance of not less than R-3 per inch.
Exterior thermal envelope insulation for framed walls
shall be installed in substantial contact and in continuous
alignment with the air barrier.
Windows, skylights and doorsThe space between framing and skylights, and the jambs of
windows and doors, shall be sealed.
Rim joistsRim joists shall include the air barrier.Rim joists shall be insulated.
Floors including cantilevered
floors and floors above
garages.
The air barrier shall be installed at any exposed edge of
insulation.
Floor framing cavity insulation shall be installed to
maintain permanent contact with the underside of
subfloor decking. Alternatively, floor framing cavity
insulation shall be in contact with the top side of
sheathing or continuous insulation installed on the
underside of floor framing; and extending from the
bottom to the top of all perimeter floor framing
members.
Crawl space wallsExposed earth in unvented crawl spaces shall be covered
with a Class I vapor retarder with overlapping joints taped.
Crawl space insulation, where provided instead of floor
insulation, shall be permanently attached to the walls.
Shafts, penetrationsDuct shafts, utility penetrations, and flue shafts opening to
exterior or unconditioned space shall be sealed.
Narrow cavitiesBatts to be installed in narrow cavities shall be cut to fit
or narrow cavities shall be filled with insulation that on
installation readily conforms to the available cavity
space.
Garage separationAir sealing shall be provided between the garage and
Recessed lightingRecessed light fixtures installed in the building thermal
envelope shall be sealed to the finished surface.
Recessed light fixtures installed in the building thermal
envelope shall be airtight and IC rated.
Plumbing and wiringIn exterior walls, batt insulation shall be cut neatly to fit
around wiring and plumbing or insulation that on
installation, readily conforms to available space, shall
extend behind piping and wiring.
Shower/tub on exterior wallThe air barrier installed at exterior walls adjacent to
showers and tubs shall separate the wall from the shower or
tub.
Exterior walls adjacent to showers and tubs shall be
insulated.
Electrical/phone box on The air barrier shall be installed behind electrical and
communication boxes. Alternatively, air-sealed boxes shall
be installed.
HVAC register bootsHVAC supply and return register boots that penetrate
building thermal envelope shall be sealed to the subfloor,
wall covering or ceiling penetrated by the boot.
Concealed sprinklersWhere required to be sealed, concealed fire sprinklers shall
only be sealed in a manner that is recommended by the
manufacturer. Caulking or other adhesive sealants shall not
be used to fill voids between fire sprinkler cover plates and
walls or ceilings.
  1. Inspection of log walls shall be in accordance with the provisions of ICC 400.

[NY] N1102.4.1.2 (R402.4.1.2) Testing

AMENDMENT
This section has been amended at the state or city level.

The building or dwelling unit shall be tested and verified as having an air leakage rate not exceeding three air changes per hour. Testing shall be conducted in accordance with RESNET/ ICC 380, ASTM E779 or ASTM E1827 and reported at a pressure of 0.2 inch w.g. (50 Pascals). Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.

During testing:

  1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures.
  2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.
  3. Interior doors, where installed at the time of the test, shall be open.
  4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed.
  5. Heating and cooling systems, where installed at the time of the test, shall be turned off.
  6. Supply and return registers, where installed at the time of the test, shall be fully open.
     Where required by the building official, testing shall be conducted by an approved third party. A written report of the results of the test shall be prepared and signed by the third party conducting the test and provided to the building official. The written report shall include:
  1. The name and place of business of the party conducting the test;
  2. The address of the building that was tested;
  3. The conditioned floor area of dwelling, calculated in accordance with ANSI Z65, except that conditioned floor area shall include areas where the ceiling height is less than 5 feet (1524 mm);
  4. Measurement of the air volume lost at an internal pressurization of 0.2 inches w.g. (50 Pascals);
  5. The date(s) of the test;
  6. A certification by the party conducting the test of the accuracy of the test results; and
  7. The signature of the party conducting the test.
Where two or more dwelling units are located within the building thermal envelope of a building, the testing procedure specified in this section shall be permitted as an alternative to compliance with Section N1102.4.1.2.

     In this section, each dwelling unit and each other conditioned occupied space located within the building thermal envelope of the building shall be referred to as a "testing unit," and the "enclosure surface area" within a testing unit shall be equal to the sum of the areas of:
  1. Each exterior wall in such testing unit,
  2. Each interior wall in such testing unit that abuts other testing unit(s),
  3. Each ceiling in such testing unit that abuts other testing unit(s) or abuts unconditioned space, and
  4. Each floor in such testing unit that abuts other testing unit(s) or abuts unconditioned space.
     Each testing unit shall be tested and verified as having an air leakage rate not exceeding 0.3 cubic feet per minute per square foot of enclosure surface area within the testing area. Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g. (50 Pascals), and shall be conducted in accordance with ASTM E779. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope. During testing:
  1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weather-stripping or other infiltration control measures.
  2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.
  3. Interior doors, if installed at the time of the test, shall be open.
  4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed.
  5. Heating and cooling systems, if installed at the time of the test, shall be turned off.
  6. Supply and return registers, if installed at the time of the test, shall be fully open.
     A written report of the results of the test shall be prepared and signed by the party conducting the test and provided to the building official. The written report shall include:
  1. The name and place of business of the party conducting the test.
  2. The address of the building which was tested.
  3. The conditioned floor area of dwelling, calculated in accordance with ANSI Z65, except that conditioned floor area shall include areas where the ceiling height is less than 5 feet (1524 mm).
  4. Measurement of the air lost at an internal pressurization of 0.2 inches w.g. (50 Pascals).
  5. The date(s) of the test.
  6. A certification by the party conducting the test of the accuracy of the test results.
  7. The signature of the party conducting the test.

[NY] N1102.4.1.3.1 (R402.4.1.3.1) Buildings With More Than Seven Dwelling Units

AMENDMENT
This section has been amended at the state or city level.
When the optional testing procedure authorized by Section R402.4.1.3 is used for a building with more than seven dwelling units, testing each testing unit shall not be required, and testing of sample testing units selected in accordance with the provisions set forth below in this section shall be permitted, when approved by the building official.
  1. Testing units shall be grouped into sample sets of not more than seven testing units and common rooms in each sample set. Each sample set shall contain testing units that are representative of all dwelling unit types and all other conditioned occupied spaces.
  2. If all testing units in the first sample set tested are verified as having an air leakage rate not exceeding 0.3 cubic feet per minute per square foot of enclosure surface area within the testing area, remaining sample sets shall be permitted to be tested at the rate of one testing unit per sample set.
  3. If any testing unit tested in accordance with Item 2 is not verified as having an air leakage rate not exceeding 0.3 cubic feet per minute per square foot of enclosure surface area within the testing area, two additional testing units in the sample set shall be tested.
  4. If any testing unit tested in accordance with Item 3 is not verified as having an air leakage rate not exceeding 0.3 cubic feet per minute per square foot of enclosure surface area within the testing area, all testing units in the sample set shall be tested, and all testing units in the subsequent sample set, if any, shall be tested.
  5. If all testing units in the sample set tested in accordance with Item 4 are verified as having an air leakage rate not exceeding 0.3 cubic feet per minute per square foot of enclosure surface area within the testing area, subsequent sample sets shall be permitted to be tested in accordance with Item 2, where approved by the building official.
New wood-burning fireplaces shall have tight-fitting flue dampers or doors, and outdoor combustion air. Where using tight-fitting doors on factory-built fireplaces listed and labeled in accordance with UL 127, the doors shall be tested and listed for the fireplace.

Windows, skylights and sliding glass doors shall have an air infiltration rate of not greater than 0.3 cfm per square foot (1.5 L/s/m2), and for swinging doors not greater than 0.5 cfm per square foot (2.6 L/s/m2), when tested in accordance with NFRC 400 or AAMA/WDMA/CSA 101/I.S.2/A440 by an accredited, independent laboratory and listed and labeled by the manufacturer.

Exception: Site-built windows, skylights and doors.

In Climate Zones 3 through 8, where open combustion air ducts provide combustion air to open combustion fuel-burning appliances, the appliances and combustion air opening shall be located outside the building thermal envelope or enclosed in a room that is isolated from inside the thermal envelope. Such rooms shall be sealed and insulated in accordance with the envelope requirements of Table N1102.1.2, where the walls, floors and ceilings shall meet a minimum of the basement wall R-value requirement. The door into the room shall be fully gasketed and any water lines and ducts in the room insulated in accordance with Section N1103. The combustion air duct shall be insulated where it passes through conditioned space to an R-value of not less than R-8.

Exceptions:

  1. Direct vent appliances with both intake and exhaust pipes installed continuous to the outside.
  2. Fireplaces and stoves complying with Sections N1102.4.2 and R1006.
Recessed luminaires installed in the building thermal envelope shall be sealed to limit air leakage between conditioned and unconditioned spaces. Recessed luminaires shall be IC-rated and labeled as having an air leakage rate of not greater than 2.0 cfm (0.944 L/s) when tested in accordance with ASTM E283 at a pressure differential of 1.57 psf (75 Pa). Recessed luminaires shall be sealed with a gasket or caulked between the housing and the interior wall or ceiling covering.

[NY] N1102.4.6 (R402.4.6) Tenant Separation Walls (Mandatory)

AMENDMENT
This section has been amended at the state or city level.
Fire separations between dwelling units in two-family dwellings and multiple single-family dwellings (townhouses) shall be insulated to no less than R-10, and the walls shall be air sealed in accordance with Section N1102.4 of this chapter.
The area-weighted average maximum fenestration U-factor permitted using tradeoffs from Section N1102.1.5 or N1105 shall be 0.48 in Climate Zones 4 and 5 and 0.40 in Climate Zones 6 through 8 for vertical fenestration, and 0.75 in Climate Zones 4 through 8 for skylights. The area-weighted average maximum fenestration SHGC permitted using tradeoffs from Section N1105 in Climate Zones 1 through 3 shall be 0.50.
Not less than one thermostat shall be provided for each separate heating and cooling system.
The thermostat controlling the primary heating or cooling system of the dwelling unit shall be capable of controlling the heating and cooling system on a daily schedule to maintain different temperature set points at different times of the day. This thermostat shall include the capability to set back or temporarily operate the system to maintain zone temperatures of not less than 55°F (13°C) to not greater than 85°F (29°C). The thermostat shall be programmed initially by the manufacturer with a heating temperature setpoint of not greater than 70°F (21°C) and a cooling temperature setpoint of not less than 78°F (26°C).
Heat pumps having supplementary electric-resistance heat shall have controls that, except during defrost, prevent supplemental heat operation when the heat pump compressor can meet the heating load.
Hot water boilers that supply heat to the building through one- or two-pipe heating systems shall have an outdoor setback control that decreases the boiler water temperature based on the outdoor temperature.
Ducts and air handlers shall be installed in accordance with Sections N1103.3.1 through N1103.3.8.

Supply and return ducts in attics shall be insulated to an R-value of not less than R-8 for ducts 3 inches (76 mm) in diameter and larger and not less than R-6 for ducts smaller than 3 inches (76 mm) in diameter. Supply and return ducts in other portions of the building shall be insulated to not less than R-6 for ducts 3 inches (76 mm) in diameter and to not less than R-4.2 for ducts smaller than 3 inches (76.2 mm) in diameter.

Exception: Ducts or portions thereof located completely inside the building thermal envelope.

[NY] N1103.3.2 (R403.3.2) Sealing (Mandatory)

AMENDMENT
This section has been amended at the state or city level.
Ducts, air handlers and filter boxes shall be sealed. Joints and seams shall comply with Section M1601.4.1.
Exceptions:
  1. Air-impermeable spray foam products shall be permitted to be applied without additional joint seals.
  2. For ducts having a static pressure classification of less than 2 inches of water column (500 Pa), additional closure systems shall not be required for continuously welded joints and seams, and locking-type joints and seams of other than the snap-lock and button-lock types.
Air handlers shall have a manufacturer's designation for an air leakage of not greater than 2 percent of the design airflow rate when tested in accordance with ASHRAE 193.

Ducts shall be pressure tested to determine air leakage by one of the following methods:

  1. Rough-in test: Total leakage shall be measured with a pressure differential of 0.1 inch w.g. (25 Pa) across the system, including the manufacturer's air handler enclosure if installed at the time of the test. Registers shall be taped or otherwise sealed during the test.
  2. Postconstruction test: Total leakage shall be measured with a pressure differential of 0.1 inch w.g. (25 Pa) across the entire system, including the manufacturer's air handler enclosure. Registers shall be taped or otherwise sealed during the test.

Exceptions:

  1. A duct air-leakage test shall not be required where the ducts and air handlers are located entirely within the building thermal envelope.
  2. A duct air-leakage test shall not be required for ducts serving heat or energy recovery ventilators that are not integrated with ducts serving heating or cooling systems.

A written report of the results of the test shall be signed by the party conducting the test and provided to the building official.

The total leakage of the ducts, where measured in accordance with Section R403.3.3, shall be as follows:

  1. Rough-in test: The total leakage shall be less than or equal to 4 cubic feet per minute (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area where the air handler is installed at the time of the test. Where the air handler is not installed at the time of the test, the total leakage shall be less than or equal to 3 cubic feet per minute (85 L/min) per 100 square feet (9.29 m2) of conditioned floor area.
  2. Postconstruction test: Total leakage shall be less than or equal to 4 cubic feet per minute (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area.
Building framing cavities shall not be used as ducts or plenums.

[NY] N1103.3.6 (R403.3.6) Ducts Buried Within Ceiling Insulation

AMENDMENT
This section has been amended at the state or city level.

Where supply and return air ducts are partially or completely buried in ceiling insulation, such ducts shall comply with all of the following:

  1. The supply and return duct shall have an insulation R-value not less than R-8.
  2. At all points along each duct, the sum of the ceiling insulation R-values against and above the top of the duct, and against and below the bottom of the duct shall be not less than R-19, excluding the R-value of the duct insulation.
Where using a simulated energy performance analysis, sections of ducts that are installed in accordance with Section N1103.3.6, located directly on, or within 5.5 inches (140 mm) of the ceiling, surrounded with blown-in attic insulation having an R-value of R-30 or greater and located such that the top of the duct is not less than 3.5 inches (89 mm) below the top of the insulation, shall be considered as having an effective duct insulation R-value of R-25.

For ducts to be considered as inside a conditioned space, such ducts shall comply with either of the following:

  1. The duct system is located completely within the continuous air barrier and within the building thermal envelope.
  2. The ducts are buried within ceiling insulation in accordance with Section N1103.3.6 and all of the following conditions exist:

    1. 2.1. The air handler is located completely within the continuous air barrier and within the building thermal envelope.
    2. 2.2. The duct leakage, as measured either by a rough-in test of the ducts or a post-construction total system leakage test to outside the building thermal envelope in accordance with Section N1103.3.4, is less than or equal to 1.5 cubic feet per minute (42.5 L/min) per 100 square feet (9.29 m2) of conditioned floor area served by the duct system.
    3. 2.3. The ceiling insulation R-value installed against and above the insulated duct is greater than or equal to the proposed ceiling insulation R-value, less the R-value of the insulation on the duct.
Mechanical system piping capable of carrying fluids greater than 105°F (41°C) or less than 55°F (13°C) shall be insulated to an R-value of not less than R-3.
Piping insulation exposed to weather shall be protected from damage, including that caused by sunlight, moisture, equipment maintenance and wind. The protection shall provide shielding from solar radiation that can cause degradation of the material. Adhesive tape shall be prohibited.
Energy conservation measures for service hot water systems shall be in accordance with Sections N1103.5.1 through N1103.5.4.
Heated water circulation systems shall be in accordance with Section N1103.5.1.1. Heat trace temperature maintenance systems shall be in accordance with Section N1103.5.1.2. Automatic controls, temperature sensors and pumps shall be accessible. Manual controls shall be readily accessible.
Heated water circulation systems shall be provided with a circulation pump. The system return pipe shall be a dedicated return pipe or a cold water supply pipe. Gravity and thermosyphon circulation systems shall be prohibited. Controls for circulating hot water system pumps shall start the pump based on the identification of a demand for hot water within the occupancy. The controls shall automatically turn off the pump when the water in the circulation loop is at the desired temperature and when there is no demand for hot water.
Electric heat trace systems shall comply with IEEE 515.1 or UL 515. Controls for such systems shall automatically adjust the energy input to the heat tracing to maintain the desired water temperature in the piping in accordance with the times when heated water is used in the occupancy.

Demand recirculation water systems shall have controls that comply with both of the following:

  1. The controls shall start the pump upon receiving a signal from the action of a user of a fixture or appliance, sensing the presence of a user of a fixture or sensing the flow of hot or tempered water to a fixture fitting or appliance.
  2. The controls shall limit the temperature of the water entering the cold water piping to not greater than 104°F (40°C).

Insulation for hot water piping with a thermal resistance, R-value, of not less than R-3 shall be applied to the following:

  1. Piping 3/4 inch (19 mm) and larger in nominal diameter.
  2. Piping serving more than one dwelling unit.
  3. Piping located outside the conditioned space.
  4. Piping from the water heater to a distribution manifold.
  5. Piping located under a floor slab.
  6. Buried piping.
  7. Supply and return piping in recirculation systems other than demand recirculation systems.
Drain water heat recovery units shall comply with CSA B55.2. Drain water heat recovery units shall be tested in accordance with CSA B55.1. Potable water-side pressure loss of drain water heat recovery units shall be less than 3 psi (20.7 kPa) for individual units connected to one or two showers. Potable water-side pressure loss of drain water heat recovery units shall be less than 2 psi (13.8 kPa) for individual units connected to three or more showers.
The building shall be provided with ventilation that complies with the requirements of Section M1505 or with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating.
Fans used to provide whole-house mechanical ventilation shall meet the efficacy requirements of Table N1103.6.1.
Exception: Where an air handler that is integral to tested and listed HVAC equipment is used to provide whole-house mechanical ventilation, the air handler shall be powered by an electronically commutated motor.
TABLE N1103.6.1 (R403.6.1)
WHOLE-HOUSE MECHANICAL VENTILATION SYSTEM FAN EFFICACYa
FAN LOCATIONAIR FLOW RATE MINIMUM
(CFM)
MINIMUM EFFICACY
(CFM/WATT)
AIR FLOW RATE MAXIMUM
(CFM)
HRV or ERVAny1.2 cfm/wattAny
Range hoodsAny2.8 cfm/wattAny
In-line fanAny2.8 cfm/wattAny
Bathroom, utility room101.4 cfm/watt< 90
Bathroom, utility room902.8 cfm/wattAny
For SI: 1 cubic foot per minute = 28.3 L/min.
  1. When tested in accordance with HVI Standard 916.
Heating and cooling equipment shall be sized in accordance with ACCA Manual S based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies. New or replacement heating and cooling equipment shall have an efficiency rating equal to or greater than the minimum required by federal law for the geographic location where the equipment is installed.

N1103.8 (R403.8) Systems Serving Multiple Dwelling Units (Mandatory)

AMENDMENT
This section has been amended at the state or city level.
Systems serving multiple dwelling units shall comply with Sections C403 and C404 of the Energy Conservation Code of New York—Commercial Provisions instead of Section N1103.
Snow- and ice-melting systems, supplied through energy service to the building, shall include automatic controls capable of shutting off the system when the pavement temperature is greater than 50°F (10°C) and precipitation is not falling, and an automatic or manual control that will allow shutoff when the outdoor temperature is greater than 40°F (4.8°C).
The energy consumption of pools and permanent spas shall be in accordance with Sections N1103.10.1 through N1103.10.3.
The electric power to heaters shall be controlled by a readily accessible on-off switch that is an integral part of the heater mounted on the exterior of the heater, or external to and within 3 feet (914 mm) of the heater. Operation of such switch shall not change the setting of the heater thermostat. Such switches shall be in addition to a circuit breaker for the power to the heater. Gas-fired heaters shall not be equipped with continuously burning ignition pilots.

Time switches or other control methods that can automatically turn off and on according to a preset schedule shall be installed for heaters and pump motors. Heaters and pump motors that have built-in time switches shall be in compliance with this section.

Exceptions:

  1. Where public health standards require 24-hour pump operation.
  2. Pumps that operate solar- and waste-heat-recovery pool heating systems.

[NY] N1103.10.3 (R403.10.3) Covers

AMENDMENT
This section has been amended at the state or city level.
Outdoor heated pools and outdoor heated permanent spas shall be equipped with a vapor-retardant pool cover or other approved vapor-retardant means. Outdoor heated pools and outdoor heated permanent spas heated to more than 90°F (32°C) shall have a pool cover with a minimum insulation value of R-12.
Exception: Where more than 60 percent of the energy for heating is from site-recovered energy or solar energy source, covers or other vapor-retardant means shall not be required
The energy consumption of electric-powered portable spas shall be controlled by the requirements of APSP 14.
Residential swimming pools and permanent residential spas that are accessory to detached one- and two-family dwellings and townhouses three stories or less in height above grade plane and that are available only to the household and its guests shall be in accordance with APSP 15.
Not less than 90 percent of the permanently installed lighting fixtures shall contain only high-efficacy lamps.
Fuel gas lighting systems shall not have continuously burning pilot lights.
This section establishes criteria for compliance using simulated energy performance analysis. Such analysis shall include heating, cooling, mechanical ventilation and service water heating energy only.
Compliance with this section requires that the mandatory provisions identified in Section N1101.13 be met. Supply and return ducts not completely inside the building thermal envelope shall be insulated to an R-value of not less than R-6.

Compliance based on simulated energy performance requires that a proposed residence (proposed design) be shown to have an annual energy cost that is less than or equal to the annual energy cost of the standard reference design. Energy prices shall be taken from a source approved by the building official, such as the Department of Energy, Energy Information Administration's State Energy Data System Prices and Expenditures reports. Building officials shall be permitted to require time-of-use pricing in energy cost calculations.

Exception: The energy use based on source energy expressed in Btu (J) or Btu per square foot (J/m2) of conditioned floor area shall be permitted to be substituted for the energy cost. The source energy multiplier for electricity shall be 3.16. The source energy multiplier for fuels other than electricity shall be 1.1.

Documentation of the software used for the performance design and the parameters for the building shall be in accordance with Sections N1105.4.1 through N1105.4.3.
Documentation verifying that the methods and accuracy of the compliance software tools conform to the provisions of this section shall be provided to the building official.

Compliance software tools shall generate a report that documents that the proposed design complies with Section N1105.3. A compliance report on the proposed design shall be submitted with the application for the building permit. Upon completion of the building, a compliance report based on the as-built condition of the building shall be submitted to the building official before a certificate of occupancy is issued. Batch sampling of buildings to determine energy code compliance shall only be allowed for stacked multiple-family units.

Compliance reports shall include information in accordance with Sections N1105.4.2.1 and N1105.4.2.2. Where the proposed design of a building could be built on different sites where the cardinal orientation of the building on each site is different, compliance of the proposed design for the purposes of the application for the building permit shall be based on the worst-case orientation, worst-case configuration, worst-case building air leakage and worst-case duct leakage. Such worst-case parameters shall be used as inputs to the compliance software for energy analysis.

A compliance report submitted with the application for building permit shall include the following:

  1. Building street address, or other building site identification.
  2. A statement indicating that the proposed design complies with Section N1105.3.
  3. An inspection checklist documenting the building component characteristics of the proposed design as indicated in Table N1105.5.2(1). The inspection checklist shall show results for both the standard reference design and the proposed design with user inputs to the compliance software to generate the results.
  4. A site-specific energy analysis report that is in compliance with Section N1105.3.
  5. The name of the individual performing the analysis and generating the report.
  6. The name and version of the compliance software tool.

A compliance report submitted for obtaining the certificate of occupancy shall include the following:

  1. Building street address, or other building site identification.
  2. A statement indicating that the as-built building complies with Section N1105.3.
  3. A certificate indicating that the building passes the performance matrix for code compliance and indicating the energy saving features of the buildings.
  4. A site-specific energy analysis report that is in compliance with Section N1105.3.
  5. The name of the individual performing the analysis and generating the report.
  6. The name and version of the compliance software tool.

The building official shall be permitted to require the following documents:

  1. Documentation of the building component characteristics of the standard reference design.
  2. A certification signed by the builder providing the building component characteristics of the proposed design as given in Table N1105.5.2(1).
  3. Documentation of the actual values used in the software calculations for the proposed design.
Calculations of the performance design shall be in accordance with Sections N1105.5.1 and N1105.5.2.
Except as specified by this section, the standard reference design and proposed design shall be configured and analyzed using identical methods and techniques.

N1105.5.2 (R405.5.2) Residence Specifications

AMENDMENT
This section has been amended at the state or city level.

The standard reference design and proposed design shall be configured and analyzed as specified by Table N1105.5.2(1). Table N1105.5.2(1) shall include, by reference, all notes contained in Table N1102.1.2.

TABLE N1105.5.2(1) [R405.5.2(1)]

SPECIFICATIONS FOR THE STANDARD REFERENCE AND PROPOSED DESIGNS

BUILDING COMPONENTSTANDARD REFERENCE DESIGNPROPOSED DESIGN
Above-grade wallsType: mass where the proposed wall is a mass wall; otherwise wood frame.As proposed
Gross area: same as proposed.As proposed
U-factor: as specified in Table N1102.1.4.As proposed
Solar absorptance = 0.75.As proposed
Emittance = 0.90.As proposed
Basement and crawl
space walls
Type: same as proposed.As proposed
Gross area: same as proposed.As proposed
U-factor: as specified in Table N1102.1.4, with the insulation layer on the interior
side of the walls.
As proposed
Above-grade floorsType: wood frame.As proposed
Gross area: same as proposed.As proposed
U-factor: as specified in Table N1102.1.4.As proposed
CeilingsType: wood frame.As proposed
Gross area: same as proposed.As proposed
U-factor: as specified in Table N1102.1.4.As proposed
RoofsType: composition shingle on wood sheathing.As proposed
Gross area: same as proposed.As proposed
Solar absorptance = 0.75.As proposed
Emittance = 0.90.As proposed
AtticsType: vented with an aperture of 1 ft2 per 300 ft2 of ceiling area.As proposed
FoundationsType: same as proposed.As proposed
Foundation wall area above and below grade and soil characteristics: same as
proposed.
As proposed
Opaque doorsArea: 40 ft2 .As proposed
Orientation: North.As proposed
U-factor: same as fenestration as specified in Table N1102.1.4.As proposed
Vertical fenestration
other than opaque
doors
Total areah =
(a) The proposed glazing area, where the proposed glazing area is less than 15
percent of the conditioned floor area.
(b) 15 percent of the conditioned floor area, where the proposed glazing area is
15 percent or more of the conditioned floor area.
As proposed
Orientation: equally distributed to four cardinal compass orientations
(N, E, S & W).
As proposed
U-factor: as specified in Table N1102.1.4.As proposed
SHGC: as specified in Table N1102.1.2 except for climate zones without an SHGC
requirement, the SHGC shall be equal to 0.40.
As proposed
Interior shade fraction: 0.92-(0.21 × SHGC for the standard reference design).Interior shade fraction:
0.92-(0.21 × SHGC as proposed)
External shading: noneAs proposed
SkylightsNoneAs proposed
Thermally isolatedNoneAs proposed
Air exchange rateThe air leakage rate at a pressure of 0.2 inch w.g. (50 Pa) shall be
Climate Zones 1 and 2: 5 air changes per hour.
Climate Zones 3 through 8: 3 air changes per hour.
The measured air exchange ratea.
The mechanical ventilation rate shall be in addition to the air leakage rate
and shall be the same as in the proposed design, but not greater than 0.01 ×
CFA + 7.5 × (Nbr + 1)
where:
CFA = conditioned floor area, ft2.
Nbr = number of bedrooms.
Energy recovery shall not be assumed for mechanical ventilation.
The mechanical ventilation rateb
shall be in addition to the air leakage
rate and shall be as proposed.
Mechanical ventilationWhere mechanical ventilation is not specified in the proposed design: None
Where mechanical ventilation is specified in the proposed design, the
annual vent fan energy use, in units of kWh/yr, shall equal (1/ef) ×
[0.0876 × CFA + 65.7 × (Nbr+1)]
where:
ef = the minimum exhaust fan efficacy, as specified in Table R403.6.1,
corresponding to a flow rate of 0.01 × CFA + 7.5 × (Nbr+1)Nbr = number of bedrooms.
As proposed
Internal gainsIGain, in units of Btu/day per dwelling unit, shall equal 17,900 + 23.8 ×
CFA + 4,104 × Nbr
where:Nbr = number of bedrooms.
Same as standard reference design.
Internal massInternal mass for furniture and contents: 8 pounds per square foot of
floor area.
Same as standard reference design,
plus any additional mass specifically
designed as a thermal storage
elementc but not integral to the
building envelope or structure.
Structural massFor masonry floor slabs: 80 percent of floor area covered by R-2 carpet and
pad, and 20 percent of floor directly exposed to room air.
As proposed
For masonry basement walls, as proposed, but with insulation as specified
in Table N1102.1.4, located on the interior side of the walls.
As proposed
For other walls, ceilings, floors, and interior walls: wood frame
construction.
As proposed
Heating systemsd, eFor other than electric heating without a heat pump: as proposed.
Where the proposed design utilizes electric heating without a heat pump, the standard
reference design shall be an air source heat pump meeting the requirements
of Section C403 of the IECC—Commercial Provisions.
Capacity: sized in accordance with Section N1103.7.
As proposed
Cooling systemsd, fAs proposed.
Capacity: sized in accordance with Section N1103.7.
As proposed
Service water heatingd, e, f, gAs proposed.
Use: same as proposed design.
As proposed
Use, in units of gal/day =
30 + (10 × Nbr)
where:
Nbr = number of bedrooms.
Thermal distribution
systems
Duct insulation: in accordance with Section N1103.3.1.
A thermal distribution system efficiency (DSE) of 0.88 shall be applied to
both the heating and cooling system efficiencies for all systems other than
tested duct systems.
Exception: For nonducted heating and cooling systems that do not have
a fan, the standard reference design thermal distribution system efficiency
(DSE) shall be 1.
For tested duct systems, the leakage rate shall be 4 cfm
(113.3 L/min) per 100 ft2 (9.29 m2) of conditioned floor area at a pressure
of differential of 0.1 inch w.g. (25 Pa).
Duct insulation: as proposed.
As tested or, where not tested, as
specified in Table N1105.5.2(2).
ThermostatType: Manual, cooling temperature setpoint = 75°F;
Heating temperature setpoint = 72°F.
Same as standard reference design.

For SI: 1 square foot = 0.93 m2, 1 British thermal unit = 1055 J, 1 pound per square foot = 4.88 kg/m2, 1 gallon (US) = 3.785 L, °C = (°F-32)/1.8, 1 degree = 0.79 rad.

  1. Where required by the building official, testing shall be conducted by an approved party. Hourly calculations as specified in the ASHRAE Handbook of Fundamentals, or the equivalent, shall be used to determine the energy loads resulting from infiltration.
  2. The combined air exchange rate for infiltration and mechanical ventilation shall be determined in accordance with Equation 43 of 2001 ASHRAE Handbook of Fundamentals, page 26.24 and the "Whole-house Ventilation" provisions of 2001 ASHRAE Handbook of Fundamentals, page 26.19 for intermittent mechanical ventilation.
  3. Thermal storage element shall mean a component that is not part of the floors, walls or ceilings that is part of a passive solar system, and that provides thermal storage such as enclosed water columns, rock beds, or phase-change containers. A thermal storage element shall be in the same room as fenestration that faces within 15 degrees (0.26 rad) of true south, or shall be connected to such a room with pipes or ducts that allow the element to be actively charged.
  4. For a proposed design with multiple heating, cooling or water heating systems using different fuel types, the applicable standard reference design system capacities and fuel types shall be weighted in accordance with their respective loads as calculated by accepted engineering practice for each equipment and fuel type present.
  5. For a proposed design without a proposed heating system, a heating system having the prevailing federal minimum efficiency shall be assumed for both the standard reference design and proposed design.
  6. For a proposed design home without a proposed cooling system, an electric air conditioner having the prevailing federal minimum efficiency shall be assumed for both the standard reference design and the proposed design.
  7. For a proposed design with a nonstorage-type water heater, a 40-gallon storage-type water heater having the prevailing federal minimum energy factor for the same fuel as the predominant heating fuel type shall be assumed. For a proposed design without a proposed water heater, a 40-gallon storage-type water heater with the prevailing federal minimum efficiency for the same fuel as the predominant heating fuel type shall be assumed for both the proposed design and standard reference design.
  8. For residences with conditioned basements, R-2 and R-4 residences, and for townhouses, the following formula shall be used to determine glazing area:

    where:

    AF = Total glazing area.

    As = Standard reference design total glazing area.

    FA = (Above-grade thermal boundary gross wall area)/(above-grade boundary wall area + 0.5 × below-grade boundary wall area).

    F = (above-grade thermal boundary wall area)/(above-grade thermal boundary wall area + common wall area) or 0.56, whichever is greater.

    and where:

    Thermal boundary wall is any wall that separates conditioned space from unconditioned space or ambient conditions.

    Above-grade thermal boundary wall is any thermal boundary wall component not in contact with soil.

    Below-grade boundary wall is any thermal boundary wall in soil contact.

TABLE N1105.5.2(2) [R405.5.2(2)]

DEFAULT DISTRIBUTION SYSTEM EFFICIENCIES FOR PROPOSED DESIGNSa

DISTRIBUTION SYSTEM CONFIGURATION AND CONDITIONFORCED AIR SYSTEMSHYDRONIC SYSTEMSb
Distribution system components located in unconditioned space0.95
Untested distribution systems entirely located in conditioned spacec0.881
"Ductless" systemsd1

For SI: 1 cubic foot per minute = 0.47 L/s, 1 square foot = 0.093m2, 1 pound per square inch = 6895 Pa, 1 inch water gauge = 1250 Pa.

  1. Default values this table are for untested distribution systems, which must still meet minimum requirements for duct system insulation.
  2. Hydronic systems shall mean those systems that distribute heating and cooling energy directly to individual spaces using liquids pumped through closed-loop piping and that do not depend on ducted, forced airflow to maintain space temperatures.
  3. Entire system in conditioned space shall mean that no component of the distribution system, including the air handler unit, is located outside of the conditioned space.
  4. Ductless systems shall be allowed to have forced airflow across a coil but shall not have any ducted airflow external to the manufacturer's air handler enclosure.
Calculation software, where used, shall be in accordance with Sections N1105.6.1 through N1105.6.3.

Calculation procedures used to comply with this section shall be software tools capable of calculating the annual energy consumption of all building elements that differ between the standard reference design and the proposed design and shall include the following capabilities:

  1. Computer generation of the standard reference design using only the input for the proposed design. The calculation procedure shall not allow the user to directly modify the building component characteristics of the standard reference design.
  2. Calculation of whole-building (as a single zone) sizing for the heating and cooling equipment in the standard reference design residence in accordance with Section N1103.7.
  3. Calculations that account for the effects of indoor and outdoor temperatures and part-load ratios on the performance of heating, ventilating and air-conditioning equipment based on climate and equipment sizing.
  4. Printed building official inspection checklist listing each of the proposed design component characteristics from Table N1105.5.2(1) determined by the analysis to provide compliance, along with their respective performance ratings such as R-value, U-factor, SHGC, HSPF, AFUE, SEER and EF.
Performance analysis tools meeting the applicable provisions of Section N1105 shall be permitted to be approved. Tools are permitted to be approved based on meeting a specified threshold for a jurisdiction. The building official shall be permitted to approve such tools for a specified application or limited scope.
When calculations require input values not specified by Sections N1102, N1103, N1104 and N1105, those input values shall be taken from an approved source.
This section establishes criteria for compliance using an Energy Rating Index (ERI) analysis.

N1106.2 (R406.2) Mandatory Requirements

AMENDMENT
This section has been amended at the state or city level.

Compliance with this section requires that the provisions identified in Sections N1101.13 through N1104 indicated as "mandatory" and in Section N1103.5.3 be met. The building thermal envelope shall be greater than or equal to levels of efficiency and Solar Heat Gain Coefficients in Table 402.1.1 or 402.1.3 of the 2010 Energy Conservation Construction Code of New York State.

Exception: Supply and return ducts not completely inside the building thermal envelope shall be insulated to an R-value of not less than R-6.

The Energy Rating Index (ERI) shall be determined in accordance with RESNET/ICC 301 except that the ERI reference design ventilation rate shall be in accordance with Equation 11-1.

(Equation 11-1)

Energy used to recharge or refuel a vehicle used for transportation on roads that are not on the building site shall not be included in the ERI reference design or the rated design.

N1106.4 (R406.4) ERI-Based Compliance

AMENDMENT
This section has been amended at the state or city level.

Compliance based on an ERI analysis requires that the rated design be shown to have an ERI less than or equal to the appropriate value indicated in Table N1106.4 when compared to the ERI reference design.


[NY] TABLE N1106.4 (R406.4)
MAXIMUM ENERGY RATING INDEX

CLIMATE ZONEENERGY RATING INDEXa
462
561
661
  1. Where on-site renewable energy is included for compliance using the ERI analysis of Section N1106.4, the building shall meet the mandatory requirements of Section N1106.2, and the building thermal envelope shall be greater than or equal to the levels of efficiency and SHGC in Table N1102.1.2 or Table N1102.1.4 of the 2015 International Residential Code, second printing: May 30th 2014.
Verification of compliance with Section N1106 shall be completed by an approved third party.
Documentation of the software used to determine the ERI and the parameters for the residential building shall be in accordance with Sections N1106.6.1 through N1106.6.3.
Software tools used for determining ERI shall be Approved Software Rating Tools in accordance with RESNET/ICC 301.

Compliance software tools shall generate a report that documents that the ERI of the rated design complies with Sections N1106.3 and N1106.4. The compliance documentation shall include the following information:

  1. Address or other identification of the residential building.
  2. An inspection checklist documenting the building component characteristics of the rated design. The inspection checklist shall show results for both the ERI reference design and the rated design, and shall document all inputs entered by the user necessary to reproduce the results.
  3. Name of individual completing the compliance report.
  4. Name and version of the compliance software tool.

Exception: Where an otherwise identical building model is offered in multiple orientations, compliance for any orientation shall be permitted by documenting that the building meets the performance requirements in each of the four (north, east, south and west) cardinal orientations.

N1106.6.3 (R406.6.3) Additional Documentation

AMENDMENT
This section has been amended at the state or city level.

The building official shall be permitted to require the following documents:

  1. Documentation of the building component characteristics of the ERI reference design.
  2. A certification signed by the builder providing the building component characteristics of the rated design.
  3. Documentation of the actual values used in the software calculations for the rated design.
Performance analysis tools meeting the applicable sections of Section N1106 shall be approved. Documentation demonstrating the approval of performance analysis tools in accordance with Section N1106.6.1 shall be provided.
Where calculations require input values not specified by Sections N1102, N1103, N1104 and N1105, those input values shall be taken from RESNET/ICC 301.
The provisions of Sections N1107 through N1111 shall control the alteration, repair, addition and change of occupancy of existing buildings and structures.

[NY] N1107.1.1 (R501.1.1) Additions, Alterations, or Repairs: General

AMENDMENT
This section has been amended at the state or city level.
Additions, alterations, or repairs to an existing building, building system or portion thereof shall comply with Section N1108, N1109 or N1110. Unaltered portions of the existing building or building supply system shall not be required to comply with this chapter.
Exception: The exceptions of Section N1101.1 of this code shall apply.
Except as specified in this chapter, this code shall not be used to require the removal, alteration or abandonment of, nor prevent the continued use and maintenance of, an existing building or building system lawfully in existence at the time of adoption of this code.
Buildings and structures, and parts thereof, shall be maintained in a safe and sanitary condition. Devices and systems that are required by this code shall be maintained in compliance with the code edition under which installed. The owner or the owner's authorized agent shall be responsible for the maintenance of buildings and structures. The requirements of this chapter shall not provide the basis for removal or abrogation of energy conservation, fire protection and safety systems and devices in existing structures.

[NY] N1107.4 (R501.4) Compliance

AMENDMENT
This section has been amended at the state or city level.
Alterations, repairs, additions and changes of occupancy to, or relocation of, existing buildings and structures shall comply with the provisions for alterations, repairs, additions and changes of occupancy or relocation, respectively, in the New York State Uniform Fire Prevention and Building Code (the Uniform Code) the New York State Energy Conservation Construction Code (the Energy Code), and NFPA 70.
Except as otherwise required or permitted by this code, materials permitted by the applicable code for new construction shall be used. Like materials shall be permitted for repairs, provided that hazards to life, health or property are not created. Hazardous materials shall not be used where the code for new construction would not allow their use in buildings of similar occupancy, purpose and location.

[NY] N1107.6 (R501.6) Historic Buildings

AMENDMENT
This section has been amended at the state or city level.
No provisions of this Chapter 11 relating to the construction, repair, alteration, restoration, and change of occupancy shall be mandatory for historic buildings.
Additions to an existing building, building system or portion thereof shall conform to the provisions of this chapter as they relate to new construction without requiring the unaltered portion of the existing building or building system to comply with this chapter. Additions shall not create an unsafe or hazardous condition or overload existing building systems. An addition shall be deemed to comply with this chapter where the addition alone complies, where the existing building and addition comply with this chapter as a single building, or where the building with the addition does not use more energy than the existing building. Additions shall be in accordance with Section N1108.1.1 or N1108.1.2.

[NY] N1108.1.1.1 (R502.1.1.1) Building Envelope

AMENDMENT
This section has been amended at the state or city level.

New building envelope assemblies that are part of the addition shall comply with Sections N1102.1, N1102.2, N1102.3.1 through N1102.3.5.

Exception: Where unconditioned space is changed to conditioned space, the building envelope of the addition shall comply where the Total UA, as determined in Section N1102.1.5, of the existing building and the addition, and any alterations that are part of the project, is less than or equal to the Total UA generated for the existing building.

New heating, cooling and duct systems that are part of the addition shall comply with Section N1103.

Exception: Where ducts from an existing heating and cooling system are extended to an addition, duct systems with less than 40 linear feet (12.19 m) in unconditioned spaces shall not be required to be tested in accordance with Section N1103.3.3

N1108.1.1.3 (R502.1.1.3) Service Hot Water Systems

AMENDMENT
This section has been amended at the state or city level.
New service hot water systems that are part of the addition shall comply with Section N1103.5.
New lighting systems that are part of the addition shall comply with Section N1104.1.
Where unconditioned space is changed to conditioned space, the addition shall comply where the annual energy cost or energy use of the addition and the existing building, and any alterations that are part of the project, is less than or equal to the annual energy cost of the existing building when modeled in accordance with Section N1105. The addition and any alterations that are part of the project shall comply with Section N1105 in its entirety.

Alterations to any building or structure shall comply with the requirements of the code for new construction. Alterations shall be such that the existing building or structure is not less conforming with the provisions of this chapter than the existing building or structure was prior to the alteration.

Alterations to an existing building, building system or portion thereof shall conform to the provisions of this chapter as they relate to new construction without requiring the unaltered portions of the existing building or building system to comply with this chapter. Alterations shall not create an unsafe or hazardous condition or overload existing building systems. Alterations shall be such that the existing building or structure does not use more energy than the existing building or structure prior to the alteration. Alterations to existing buildings shall comply with Sections N1109.1.1 through N1109.2.

[NY] N1109.1.1 (R503.1.1) Building Envelope

AMENDMENT
This section has been amended at the state or city level.
Building envelope assemblies that are part of the alteration shall comply with Section N1102.1.2 or N1102.1.4, Sections N1102.2.1 through N1102.2.13, N1102.3.1, N1102.3.2, N1102.4.3 and N1102.4.5.
Exception: The following alterations shall not be required to comply with the requirements for new construction provided that the energy use of the building is not increased:
  1. Storm windows installed over existing fenestration.
  2. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are filled with insulation.
  3. Construction where the existing roof, wall or floor cavity is not exposed.
  4. Roof recover.
  5. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
  6. Surface-applied window film installed on existing single-pane fenestration assemblies to reduce solar heat gain provided that the code does not require the glazing or fenestration assembly to be replaced.
  7. Alterations which replace less than fifty percent of the luminaires within a space, provided that such alterations do not increase the installed interior lighting power.
Where some or all of an existing fenestration unit is replaced with a new fenestration product, including sash and glazing, the replacement fenestration unit shall meet the applicable requirements for U-factor and SHGC as specified in Table N1102.1.2. Where more than one replacement fenestration unit is to be installed, an area-weighted average of the U-factor, SHGC or both of all replacement fenestration units shall be an alternative that can be used to show compliance.

New heating, cooling and duct systems that are part of the alteration shall comply with Section N1103.

Exception: Where ducts from an existing heating and cooling system are extended, duct systems with less than 40 linear feet (12.19 m) in unconditioned spaces shall not be required to be tested in accordance with Section N1103.3.3.

New service hot water systems that are part of the alteration shall comply with Section N1103.5.

New lighting systems that are part of the alteration shall comply with Section N1104.1.

Exception: Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power.

Any nonconditioned or low energy space that is altered to become conditioned space shall be required to be brought into full compliance with this chapter.

Exception: Where the simulated performance option in Section N1105 is used to comply with this section, the annual energy cost of the proposed design is permitted to be 110 percent of the annual energy cost otherwise allowed by Section N1105.3.

Buildings, structures and parts thereof shall be repaired in compliance with Section N1107.3 and this section. Work on nondamaged components necessary for the required repair of damaged components shall be considered to be part of the repair and shall not be subject to the requirements for alterations in this chapter. Routine maintenance required by Section N1107.3, ordinary repairs exempt from permit, and abatement of wear due to normal service conditions shall not be subject to the requirements for repairs in this section.

[NY] N1110.2 (R504.2) Application

AMENDMENT
This section has been amended at the state or city level.

For the purposes of this code, the following shall be considered to be repairs:

  1. Glass-only replacements in an existing sash and frame.
  2. Roof repairs.
  3. Repairs where only the bulb, ballast or both within the existing luminaires in a space are replaced provided that the replacement does not increase the installed interior lighting power.
  4. Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule provided, however, that an existing vestibule that separates conditioned space from the exterior shall not be removed.
Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy shall comply with this chapter.

Any space that is converted to a dwelling unit or portion thereof from another use or occupancy shall comply with this chapter.

Exception: Where the simulated performance option in Section N1105 is used to comply with this section, the annual energy cost of the proposed design is permitted to be 110 percent of the annual energy cost allowed by Section N1105.3.

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