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2018 Washington State Energy Code-Residential <br /> Prescriptive Energy Code Compliance for All Climate Zones in Washington <br /> Single Family-New&Additions(effective February 1, 2021) <br /> Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 (fuel <br /> normalization credits)and Table 406.3(energy credits)to achieve the following minimum number of <br /> credits.To claim this credit,the building permit drawings shall specify the option selected and the <br /> maximum tested building air leakage,and show the qualifying ventilation system and its control sequence <br /> of operation. <br /> 1. Small Dwelling Unit:3 credits <br /> Dwelling units less than 1,500 sf in conditioned floor area with less than 300 sf of fenestration area. <br /> Additions to existing building that are greater than 500 sf of heated floor area but less than 1,500 sf. <br /> 2. Medium Dwelling Unit:6 credits <br /> All dwelling units that are not included in#1 or#3 <br /> 3. Large Dwelling Unit:7 credits <br /> Dwelling units exceeding 5,000 sf of conditioned floor area <br /> 4. Additions less than 500 square feet: 1.5 credits <br /> All other additions shall meet 1-3 above <br /> Before selecting your credits on this Summary table,review the details in Table 406.3 (Single Family),on page 4. <br /> Summary of Table R406.2 <br /> Heating; Credits-select ONE <br /> Fuel Normalization Descriptions ! User Notes • <br /> Options heating option • <br /> 1 Combustion heating minimum NAECAb1 0.0 • 0 <br /> 2 I Heat pump` i 1.0 1 Q <br /> 3 lElectric resistance heat only furnace or zonal 1 -1.0 ! 0 <br /> 4 •DHP with zonal electric resistance per option 3.4 1 0.5 <br /> 5 All other heating systems -1.0 0 J <br /> Energy . Credits-select ONE <br /> • <br /> O tions Energy Credit Option Descriptions energy option from each <br /> P category <br /> 1.1 Efficient Building Envelope I 0.5 ❑ <br /> 1.2 Efficient Building Envelope 1.0 ❑ <br /> 1.3 Efficient Building Envelope 1 0.5 ❑ <br /> 1.4 Efficient Building Envelope I 1.0 ❑ <br /> 1.5 I Efficient Building Envelope l 2.0 ❑ <br /> 1.6 I Efficient Building Envelope i 3.0 ❑ <br /> 1.7 Efficient Building Envelope ❑ 0.5 ❑ I{{ <br /> 2.1 Air Leakage Control and Efficient Ventilation I 0.5 ❑ <br /> 2.2 Air Leakage Control and Efficient Ventilation 1 1.0 ❑ <br /> 2.3 Air Leakage Control and Efficient Ventilation i 1.5 0 <br /> Er- <br /> 2.4 i Air Leakage Control and Efficient Ventilation i 2.0 0 <br /> 3.1a High Efficiency HVAC 1.0 { 0 <br /> 3.2 !High Efficiency HVAC i 1.0 j 0 J <br /> 3.3a .High Efficiency HVAC 1.5 0 <br /> • <br /> 3.4 High Efficiency HVAC 1.5 0 I <br /> 3.5 High Efficiency HVAC 1.5 0 <br /> 3.6a High Efficiency HVAC d 2.0 0 <br /> 4.1 High Efficiency HVAC Distribution System 0.5 ❑ <br /> 4.2 ;High Efficiency HVAC Distribution System P 1.0 1 ❑ ` <br /> Prescriptive Path-Single Family 2018 Washington State Energy Code-R 2 8 <br />