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Section A4.203 Performance Approach for Newly Constructed Buildings
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Newly constructed low-rise residential buildings shall comply with Sections A4.203.1.1 through A4.203.1.4.
A4.203.1.1.1 Energy design ratings and A4.203.1.1.2 Quality Insulation
Installation are required for all applicable components of the building project.
Total EDR and Efficiency EDR ratings for the Proposed Design Building shall be computed by Compliance Software certified by the Energy Commission as described in Title 24, Part 6, Section 100.1 and 150.1(b), and these ratings shall be included in the Certificate of Compliance documentation.
| RECOMMENDED EDR TARGETS BY CLIMATE ZONES | ||||
|---|---|---|---|---|
| CZ | Tier 1 | Tier 2 | ||
| Mixed Fuel | All-Electric | Mixed Fuel | All-Electric | |
| 1 | 23 | 36 | 13 | 0 |
| 2 | 12 | 16 | 5 | 0 |
| 3 | 10 | 14 | 0 | 0 |
| 4 | 8 | 12 | 0 | 0 |
| 5 | 10 | 16 | 0 | 0 |
| 6 | 10 | 12 | 0 | 0 |
| 7 | 5 | 7 | 0 | 0 |
| 8 | 10 | 10 | 0 | 0 |
| 9 | 13 | 13 | 0 | 0 |
| 10 | 10 | 11 | 0 | 0 |
| 11 | 11 | 12 | 0 | 0 |
| 12 | 12 | 13 | 0 | 0 |
| 13 | 11 | 13 | 0 | 0 |
| 14 | 15 | 16 | 5 | 0 |
| 15 | 11 | 8 | 0 | 7 |
| 16 | 22 | 39 | 14 | 10 |
Note: Community shared options complying with Title 24, Part 1, Sec-
tion 10-115 may be used to achieve Total EDR targets.
Note: For Energy Budget calculations, high-rise residential and hotel/motel buildings are considered nonresidential buildings.
Note: For Energy Budget calculations, high-rise residential and hotel/motel buildings are considered nonresidential buildings.
The QII procedures specified in the Building Energy Efficiency Standards Reference Appendices RA3.5 shall be completed.
In addition, ONE of the following efficiency measures will be required: A4.203.1.2.1 Roof deck insulation, or ducts in conditioned space; OR A4.203.1.2.2 High Performance Walls; OR A4.203.1.2.3 HERS-Verified Compact Hot Water Distribution System; OR A4.203.1.2.4 HERS-Veri-
fied Drain Water Heat Recovery.
Meet one of the three options for the location of ducts and air handlers as well as insulation R-values and installation of a radiant barrier as specified in Title 24, Part 6, Section 150.1(c)9A or B:
- Below roof deck insulation with a minimum R-value of 19; or,
- Continuous above deck insulation with a minimum R-8 and with an air space present between the roofing and the roof deck; or,
- All ducts and air handlers in conditioned space as specified in the Title 24, Part 6 Reference Appendices RA3.1.
HPW meet the climate zone dependent U-factor and insulation values for either 2x6 or 2x4 framing as specified in Title 24, Part 6, Section 150.1(c)1B: maximum U-factor of 0.048.
CHWDS-H shall be installed as specified in the Title 24, Part 6 Reference Appendix RA3.6.5.
DWHR-H shall be installed as specified in Title 24, Part 6 Reference Appendix RA4.4.21.
Comply with one of the advanced efficiency levels, either A4.201.1.3.1 OR A4.201.1.3.2, indicated below.
Buildings complying with the first level of advanced energy efficiency shall have additional integrated efficiency and onsite renewable energy generation sufficient to achieve a Total EDR of
the Tier 1 value indicated by Table A4.203.1.1.1 or lower as calculated by Title 24, Part 6 Compliance Software approved by the Energy Commission. This requirement is in addition to meeting the Efficiency EDR required for compliance with Title 24, Part 6. Measures considered to meet the Total EDR targets calculated by the compliance software include, but are not limited to, the prerequisite options specified in Section A4.203.1.2, use of Demand Response, additional energy efficiency measures (e.g., triple-pane windows),
as well as onsite electric battery and/or thermal storage.
Buildings complying with this second elective designation shall have additional integrated efficiency and onsite renewable energy generation sufficient to achieve a Total EDR of the Tier 2 value indicated by Table A4.203.1.1.1 or lower as calculated by Title 24, Part 6 Compliance Software approved by the Energy Commission. This may be reached by various paths, including improved space and water heating efficiencies, advanced electric battery controls, as well as modest oversizing of the photovoltaic system. This requirement is in addition to meeting the Efficiency EDR required for compliance
with Title 24, Part 6. Measures considered to meet the Total EDR targets calculated by the compliance software include, but are not limited to, the prerequisite options specified in Section A4.203.1.2, use of Demand Response, additional energy efficiency measures (e.g.,
triple-pane windows), as well as onsite electric battery and/or thermal storage.
Local jurisdictions considering adoption of Tier I as specified by A4.203.1.3.1 or Tier II as specified by A4.203.1.3.2, including local jurisdictions considering community shared solar or storage options consistent with Part 1 Section 10-115, shall consult with the local electric service provider to ensure that solar system sizing required
to comply will be acceptable to the local electric service provider. The local jurisdiction shall not require onsite renewable energy generation systems that are larger than the local electric service provider will allow to be interconnected.