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ADOPTS WITHOUT AMENDMENTS:

ASHRAE 90.1, 2019

Heads up: There are no amended sections in this chapter.
New buildings shall comply with the standard as described in Section 4.2.
Additions to existing buildings shall comply with the standard as described in Section 4.2.
Alterations of existing buildings shall comply with the standard as described in Section 4.2.
Portions of a building envelope, heating, ventilating, air-conditioning, service water heating, power, lighting, and other systems and equipment that are being replaced shall be considered as alterations of existing buildings and shall comply with the standard as described in Section 4.2.
Whenever unconditioned space or semiheated space in a building is converted to a conditioned space, such conditioned space shall be brought into compliance with all the applicable requirements of this standard that would apply to the building envelope, heating, ventilating, air-conditioning, service water heating, power, lighting, and other systems and equipment of the space as if the building was new.
Administrative requirements relating to permit requirements, enforcement by the authority having jurisdiction, locally adopted energy standards, interpretations, claims of exemption, and rights of appeal are specified by the authority having jurisdiction.
The provisions of this standard are not intended to prevent the use of any material, method of construction, design, equipment, or building system not specifically prescribed herein.
If any term, part, provision, section, paragraph, subdivision, table, chart, or referenced standard of this standard shall be held unconstitutional, invalid, or ineffective, in whole or in part, such determination shall not be deemed to invalidate any remaining term, part, provision, section, paragraph, subdivision, table, chart, or referenced standard of this standard.
The provisions of this standard shall not be deemed to nullify any provisions of local, state, or federal law. Where there is a conflict between a requirement of this standard and such other law affecting construction of the building, precedence shall be determined by the authority having jurisdiction.
The standards referenced in this standard and listed in Section 12 shall be considered part of the requirements of this standard to the prescribed extent of such reference. Where differences occur between the provision of this standard and referenced standards, the provisions of this standard shall apply. Informative references are cited to acknowledge sources and are not part of this standard. They are identified in Informative Appendix E.
The normative appendices to this standard are considered to be integral parts of the mandatory requirements of this standard, which, for reasons of convenience, are placed apart from all other normative elements.
The informative appendices to this standard and informative notes located within this standard contain additional information and are not mandatory or part of this standard.
The reference standard reproduction annexes contain material that is cited in this standard but contained in another standard. The reference standard reproduction annexes are not part of this standard but are included in the publication of this standard to facilitate use of this standard.
New buildings shall comply with Sections 4.2.2 through 4.2.5 and either the provisions of
  1. Section 5, "Building Envelope"; Section 6, "Heating, Ventilating, and Air Conditioning"; Section 7, "Service Water Heating"; Section 8, "Power"; Section 9, "Lighting"; and Section 10, "Other Equipment," or
  2. Section 11, "Energy Cost Budget Method," or
  3. Normative Appendix G, "Performance Rating Method."
When using Normative Appendix G, the Performance Cost Index (PCI) of new buildings, additions to existing buildings, and/or alterations to existing buildings shall be less than or equal to the Performance Cost Index Target (PCIt) when calculated in accordance with the following:
PCIt = [BBUEC + (BPF × BBREC)]/BBP
where
PCI = Performance Cost Index calculated in accordance with Section G1.2.
BBUEC = baseline building unregulated energy cost, the portion of the annual energy cost of a baseline building design that is due to unregulated energy use.
BBREC = baseline building regulated energy cost, the portion of the annual energy cost of a baseline building design that is due to regulated energy use.
BPF = building performance factor from Table 4.2.1.1. For building area types not listed in Table 4.2.1.1 use "All others." Where a building has multiple building area types, the required BPF shall be equal to the area-weighted average of the building area types.
BBP = baseline building performance.
PNA = proposed renewable energy contribution not allowed for compliance.
PBP = proposed building performance, including the reduced, annual purchased energy cost associated with all on-site renewable energy generation systems.
PBPnre = proposed building performance without any credit for reduced annual energy costs from on-site renewable energy generation systems.
When (PBPnre — PBP)/BBP > 0.05, new buildings, additions to existing buildings, and/or alterations to existing buildings shall comply with the following:
PCI + [(PBPnre — PBP)/BBP] — 0.05 < PCIt
Regulated energy cost shall be calculated by multiplying the total energy cost by the ratio of regulated energy use to total energy use for each fuel type. Unregulated energy cost shall be calculated by subtracting regulated energy cost from total energy cost.
Table 4.2.1.1 Building Performance Factor (BPF)
Building Area Type Climate Zone
0A and 1A 0B and 1B 2A 2B 3A 3B 3C 4A 4B 4C 5A 5B 5C 6A 6B 7 8
Multifamily 0.68 0.70 0.66 0.66 0.69 0.68 0.59 0.74 0.76 0.74 0.70 0.73 0.75 0.68 0.71 0.68 0.72
Healthcare/hospital 0.60 0.60 0.58 0.54 0.56 0.55 0.55 0.55 0.54 0.54 0.57 0.52 0.54 0.57 0.52 0.57 0.57
Hotel/motel 0.55 0.53 0.53 0.52 0.53 0.54 0.54 0.53 0.53 0.52 0.50 0.51 0.51 0.50 0.51 0.50 0.50
Office 0.52 0.57 0.50 0.56 0.53 0.56 0.48 0.51 0.52 0.49 0.51 0.51 0.49 0.52 0.51 0.49 0.51
Restaurant 0.63 0.64 0.60 0.60 0.60 0.61 0.58 0.62 0.57 0.61 0.63 0.60 0.64 0.65 0.62 0.67 0.70
Retail 0.51 0.54 0.49 0.55 0.51 0.55 0.53 0.51 0.55 0.54 0.50 0.54 0.55 0.50 0.51 0.48 0.50
School 0.39 0.47 0.38 0.43 0.38 0.42 0.40 0.37 0.40 0.38 0.36 0.40 0.36 0.36 0.37 0.36 0.37
Warehouse 0.38 0.42 0.40 0.42 0.43 0.44 0.43 0.44 0.43 0.46 0.49 0.47 0.48 0.54 0.51 0.57 0.57
All others 0.56 0.57 0.50 0.52 0.50 0.54 0.53 0.53 0.52 0.54 0.51 0.51 0.50 0.50 0.50 0.50 0.46
Additions to existing buildings shall comply with the provisions of Sections 4.2.2 through 4.2.5 and one of the following:
  1. Section 5, "Building Envelope"; Section 6, "Heating, Ventilating, and Air Conditioning"; Section 7, "Service Water Heating"; Section 8, "Power"; Section 9, "Lighting"; and Section 10, "Other Equipment," or
  2. Section 11, "Energy Cost Budget Method," or
  3. Normative Appendix G, "Performance Rating Method."
in accordance with Section 4.2.1.1.
When an addition to an existing building cannot comply by itself, trade-offs will be allowed by modification to one or more of the existing components of the existing building. Modeling of the modified components of the existing building and addition shall employ the procedures of Section 11 or Normative Appendix G; the addition shall not increase the energy consumption of the existing building plus the addition beyond the energy that would be consumed by the existing building plus the addition if the addition alone did comply.
Alterations of existing buildings shall comply with the provisions of Sections 4.2.2 through 4.2.5 and one of the following:
  1. Section 5, "Building Envelope"; Section 6, "Heating, Ventilating, and Air Conditioning"; Section 7, "Service Water Heating"; Section 8, "Power"; Section 9, "Lighting"; and Section 10, "Other Equipment," or
  2. Section 11, "Energy Cost Budget Method," or
  3. Normative Appendix G, "Performance Rating Method."
in accordance with Section 4.2.1.1.
Exception to 4.2.1.3
A building that has been specifically designated as historically significant by the adopting authority or is listed in The National Register of Historic Places or has been determined to be eligible for listing by the U.S. Secretary of the Interior need not comply with these requirements.
Compliance documents shall show all the pertinent data and features of the building, equipment, and systems in sufficient detail to permit a determination of compliance by the building official and to indicate compliance with the requirements of this standard.
Supplemental information necessary to verify compliance with this standard, such as calculations, worksheets, compliance forms, vendor literature, or other data, shall be made available when required by the building official.
Operating and maintenance information shall be provided to the building owner. This information shall include, but not be limited to, the information specified in Sections 5.7.3.2, 6.7.3.2, 7.7.3.2, 8.7.3.2, 9.7.3.2, and 10.7.3.2.
Materials and equipment shall be labeled in a manner that will allow for a determination of their compliance with the applicable provisions of this standard.
All building construction, additions, or alterations work subject to the provisions of this standard shall remain accessible and exposed for inspection purposes until approved in accordance with the procedures specified by the building official.
Building systems, controls, and the building envelope shall comply with Sections 4.2.5.1, 4.2.5.2, and 4.2.5.3.
See Informative Appendix H for additional commissioning guidance.
Verification or functional performance testing (FPT) to confirm compliance with required provisions of this standard shall be performed on building systems, controls, and the building envelope, as required by Sections 5.9.1, 6.9.1, 7.9.1, 8.9.1, 9.9.1, 10.9.1, 11.2(d), and G1.2.1(c). Where testing is required but specific FPT procedures are not specified in this standard, testing shall use generally accepted engineering standards acceptable to the building official.
For alterations and additions, verification and testing shall be performed for new systems, and their interface and integration with existing building systems shall be verified or tested.
V&T providers shall be the owner's qualified employees, commissioning providers, design professionals, qualified designers, or qualified technicians experienced with verification or FPT of the designated systems. V&T providers shall not be individuals who performed design or installation of the systems or assemblies being verified or tested.
The following information shall be included on the construction documents as part of the building permit application:
  1. For systems that are required to comply with Section 4.2.5.1, the construction documents shall identify V&T providers.
  2. V&T providers shall review the construction documents to verify that the relevant sensor locations, devices, and control sequences are properly specified; performance and testing criteria are included; and equipment to be tested is accessible for testing and maintenance.
  3. FPT and verification processes and system performance requirements shall be incorporated into the construction documents.
The completed verification and FPT documentation shall include the results of the FPT and verification, be provided to the owner, and be retained with the project records. The V&T providers shall certify completion of required verification and FPT and include a plan for the completion of any deferred FPT, including climatic and other conditions required for performance of the deferred tests. A copy of verification and FPT documentation shall be submitted to the building official if requested.
Commissioning shall be performed in accordance with this section and Sections 5.9.2, 6.9.2, 7.9.2, 8.9.2, 9.9.2, 10.9.2, 11.2(d), and G1.2.1(c). Commissioning shall use ASHRAE/IES Standard 202 or other generally accepted engineering standards acceptable to the building official. FPT and verification requirements for commissioning are as stated in Section 4.2.5.1. Commissioning shall also document in sufficient detail compliance of the building systems, controls, and building envelope with required provisions of this standard. Commissioning requirements shall be incorporated into the construction documents.
The commissioning provider shall have the necessary training, experience, and FPT equipment. The commissioning team shall include V&T providers. The commissioning provider shall be (a) a third-party entity not associated with the building project, (b) owner's qualified employees, or (c) an individual associated with the design firm or contractor but not directly associated with design or installation of the building systems, controls, or building envelope being commissioned.
Exceptions to 4.2.5.2
  1. Buildings, additions, or alterations with less than 10,000 ft2 of conditioned space and combined heating, cooling, and service water heating equipment totaling less than 960,000 Btu/h in capacity.
  2. Buildings or portions of buildings that use the Simplified Approach Option for HVAC Systems in Section 6.3.
  3. Dwelling units.
  4. Nonrefrigerated warehouses.
The following activities shall be completed prior to issuance of a building permit:
  1. A copy of the commissioning plan shall be submitted to the owner. A copy of the commissioning plan shall be submitted with the building permit application if requested by the building official.
  2. A commissioning provider shall be designated by the owner to manage commissioning activities prior to completion of construction documents. The construction documents shall identify the commissioning provider.
  3. The commissioning provider shall submit the design review report to the owner.
  4. Construction phase commissioning requirements shall be incorporated into construction documents.
Project commissioning documents shall comply with ASHRAE/IES Standard 202 or other generally accepted engineering standards acceptable to the building official. The commissioning provider shall certify completion of the required commissioning process and provide the following documents to the owner and design teams:
  1. Commissioning Plan. Identify FPT or verification procedures for all systems to be verified, commissioned, or tested.
  2. Design Review Report. Detail compliance of the design with the Owner's Project Requirements and provisions of this standard. This commissioning design review shall not be considered a design peer review or a code or regulatory review.
  3. Preliminary Commissioning Report. The preliminary commissioning report shall include the following:
    1. Required performance of commissioned equipment, systems, and assemblies, and results of FPT and verification
    2. Summary of compliance of the building and its components, assemblies, controls, and systems with required provisions of this standard
    3. Issues and resolution logs, including itemization of deficiencies found during verification, testing, and commissioning that have not been corrected at the time of report preparation
    4. Deferred tests that cannot be performed at the time of report preparation
    5. Documentation of the training of operating personnel and building occupants on commissioned systems, and a plan for the completion of any deferred trainings not completed at the time of report preparation
    6. A plan for the completion of commissioning and training, including climatic and other conditions required for performance of the deferred tests
  4. Final Commissioning Report. The construction documents shall require the commissioning provider to provide a final commissioning report to the owner before completion of the contractor's general warranty period.
Before issuance of a certificate of occupancy, the V&T providers or commissioning provider shall complete the following activities:
  1. Verification and FPT of the systems specified in Section 4.2.5.1.1 shall be completed and documented.
    Exception to 4.2.5.3(a):
    Systems for which operation is seasonally dependent and which cannot be fully verified or tested at the time of occupancy, shall be functionally tested or commissioned when allowed for by postoccupancy operating conditions as determined by the commissioning or V&T providers.
  2. The owner shall be provided with the verification and FPT documentation as provided for in Section 4.2.5.1.2, or a preliminary commissioning report as provided for in Section 4.2.5.2.2.
  3. The owner shall provide the building official with one of the following:
    1. A letter of transmittal acknowledging that the building owner or owner's authorized agent has received and accepted all required verification documentation, FPT documentation, and required preliminary commissioning report
    2. A copy of the reports listed in Section 4.2.5.3(b), if requested by the building official
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