Energy (E) Measures |
E1 | Lighting Measures: Mandatory measure. Replace all interior and exterior screw-in incandescent, halogen, and compact fluorescent lamps with LED lamps. Install photocell controls on all exterior lighting luminaires. |
E2 | Water Heating Package: Water Heating Package: Insulate all accessible hot water pipes with pipe insulation a minimum of 3/4 inch thick. This includes insulating the supply pipe leaving the water heater, piping to faucets underneath sinks, and accessible pipes in attic spaces or crawlspaces. Upgrade fittings in sinks and showers to meet current California Green Building Standards Code (Title 24, Part 11) Section 4.303 water efficiency requirements. |
• | Exception 1: Water heater blanket is not required on water heaters less than 20 gallons. |
• | Exception 2: Water heater blanket not required if application of a water heater blanket voids the warranty on the water heater. |
• | Exception 3: Upgraded fixtures are not required if existing fixtures have rated or measured flow rates of no more than ten percent greater than 2022 California Green Building Standards Code (Title 24, Part 11) Section 4.303 water efficiency requirements. |
• | Exception 4: Water heaters with factory installed insulation of R-24 or greater. |
E3 | Air Sealing: Seal all accessible cracks, holes, and gaps in the building envelope at walls, floors, and ceilings. Pay special attention to penetrations including plumbing, electrical, and mechanical vents, recessed can light luminaires, and windows. Weather-strip doors if not already present. Verification shall be conducted following a prescriptive checklist that outlines which building aspects need to be addressed by the permit applicant and verified by an inspector. Compliance can also be demonstrated with blower door testing conducted by a certified HERS Rater no more than three years prior to the permit application date that either: a) shows at least a 30 percent reduction from pre-retrofit conditions; or b) shows that the number of air changes per hour at 50 Pascals pressure difference (ACH50) does not exceed ten for Pre-1978 vintage buildings, seven for 1978 to 1991 vintage buildings and five for 1992-2010 vintage buildings. If combustion appliances are located within the pressure boundary of the building, conduct a combustion safety test by a professional certified by the Building Performance Institute in accordance with the ANSI/BPI-1200-S-2017 Standard Practice for Basic Analysis of Buildings, the Whole House Combustion Appliance Safety Test Procedure for the Comfortable Home Rebates Program 2020 or the California Community Services and Development Combustion Appliance Safety Testing Protocol. |
E4 | Attic Insulation: Attic insulation shall be installed to achieve a weighted assembly U-factor of 0.025 or insulation installed at the ceiling level shall have a thermal resistance of R-38 or greater for the insulation alone. Recessed downlight luminaires in the ceiling shall be covered with insulation to the same depth as the rest of the ceiling. Luminaires not rated for insulation contact must be replaced or fitted with a fire-proof cover that allows for insulation to be installed directly over the cover. • Exception: In buildings where existing R-30 is present and existing recessed downlight luminaires are not rated for insulation contact, insulation is not required to be installed over the luminaires. |
E5 | Duct Sealing: Air seal all space conditioning ductwork to meet the requirements of Section 150.2(b)1E. The duct system must be tested by a HERS Rater no more than three years prior to the Covered Project permit application date to verify the duct sealing and confirm that the requirements have been met. This measure may not be combined with the New Ducts and Duct Sealing measure in this Table. • Exception: Buildings without ductwork or where the ducts are in conditioned space. |
E6 | New Ducts + Duct Sealing: Replace existing space conditioning ductwork with new R-6 ducts that meet the requirements of Section 150.0(m)11. This measure may not be combined with the Duct Sealing measure in this Table. To qualify, a preexisting measure must have been installed no more than three years before the Covered Project permit application date. |
E7 | Windows: Replace at least 50% of existing windows with high performance windows with an area-weighted average U-factor no greater than 0.30. |
E8 | Wall Insulation: Install wall insulation in all exterior walls to achieve a weighted U-factor of 0.102 or install wall insulation in all exterior wall cavities that shall result in an installed thermal resistance of R-13 or greater for the insulation alone. |
Fuel Substitution (FS) Measures |
FS1 | Heat Pump Water Heater (HPWH) Replacing Gas: Replace all existing electric resistance and natural gas storage water heaters with heat pump water heaters. |
FS2 | High Efficiency Heat Pump Water Heater (HPWH) Replacing Gas: Replace all existing natural gas water heaters with heat pump water heaters with a Northwest Energy Efficiency Alliance (NEEA) Tier 3 or higher rating. |
FS3 | Heat Pump Water Heater (HPWH) Replacing Electric: Replace existing electric resistance water heater with a heat pump water heater. |
Vs. | High Efficiency Heat Pump Water Heater (HPWH) Replacing Electric: Replace existing electric resistance water heater with heat pump water heater with a Northwest Energy Efficiency Alliance (NEEA) Tier 3 or higher rating. |
FS5 | Heat Pump Space Heater: Replace all existing gas and electric resistance primary space heating systems with an electric-only heat pump system. |
FS6 | High Efficiency Heat Pump Space Heater: Replace all existing gas and electric resistance primary space heating systems with one of the following: A. A ducted electric-only heat pump system with a SEER2 rating of 16.5 or greater, an EER2 rating of 12.48 or greater and an HSPF2 rating of 9.5 or greater; or B. A ductless mini-split heat pump system with a SEER2 rating of 14.3 or greater, an EER2 rating of 11.7 or greater and an HSPF2 rating of 7.5 or greater. |
FS8 | Heat Pump Clothes Dryer: Replace all existing gas and electric resistance clothes dryers with heat pump dryers with no resistance element and cap the gas lines. |
FS9 | Induction Cooktop: Replace all existing gas and electric resistance stove tops with inductive stove tops and cap the gas lines. |
Solar Photovoltaics (PV) and Electric-Readiness (ER) Measures |
PV1 | Solar PV+ Electric Ready Pre-Wire: Installation of New Solar PV Systems: Install a new solar PV system that meets the requirements of Section 150.1(c)(14). In addition, upgrade the panelboard to meet the requirements of ER1 and install any two of the other measures from ER2.A - ER2.F. Existing PV Systems: If the home already has an existing solar PV system that meets the requirements of Section 150.1(c)(14), to claim credit for this measure, PV1, upgrade the panelboard to meet the requirements of ER1 and install any two of the other measures from ER2.A - ER2.F. |
ER1 | Electric Readiness - Service Upgrade: Mandatory measure for scopes of work identified below. Upgrade the panelboard serving the individual dwelling unit to provide circuit breaker spaces for a heat pump water heater, heat pump space heater, electric cooktop and electric clothes dryer with the capacities specified in Section 150.0 (n), (t), (u) and (v); or, provide electrical load calculations and appliance specifications for serving all of these end-uses with a minimum 100-amp panel. |
ER2 | Electric Readiness Measures - End Uses: Mandatory measure for scopes of work identified below. |
For any covered project, if the service panel is being upgraded or to claim the Solar PV + Electric Ready Pre-Wire credit, satisfy any two of the electric-readiness measures below. |
• | If the kitchen is being remodeled, make the range electric ready as specified in ER2, Item C below and upgrade the panelboard as specified under ER1. |
• | If the laundry room is being remodeled, make the dryer electric ready as specified in Item D below and upgrade the panelboard as specified under ER1. |
Meet the requirements below, that otherwise apply to newly constructed buildings: |
A. | Heat Pump Water Heater Ready, as specified in Section 150.0(n)1. |
B. | Heat Pump Space Heater Ready, as specified in Section 150.0(t). |
C. | Electric Cooktop Ready, as specified in Section 150.0(u). |
D. | Electric Clothes Dryer Ready, as specified in Section 150.0(v). |
E. | Energy Storage Systems (ESS) Ready, as specified in Section 150.0(s). |
F. | EV Charger Ready. Install a dedicated 208/240-volt branch circuit as specified in the California Green Building Code, Title 24, Part 11, Section A4.106.8.1, which otherwise applies to new construction. |
Exception: If an electrical permit is not otherwise required for the project other than compliance with the laundry room and kitchen remodel requirements of this Item, ER2. |