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' : , 20ashington State Energy Code-Residential Prescriptive Energy Code Compliance for All Climate Zones in W ington Single Family-New&Additions(effective February 1, 2021) Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 (fuel normalization credits)and Table 406.3 (energy credits)to achieve the following minimum number of credits.To claim this credit,the building permit drawings shall specify the option selected and the maximum tested building air leakage,and show the qualifying ventilation system and its control sequence of operation. 1. Small Dwelling Unit: 3 credits Dwelling units less than 1,500 sf in conditioned floor area with less than 300 sf of fenestration area. Additions to existing building that are greater than 500 sf of heated floor area but less than 1,500 sf. 2. Medium Dwelling Unit:6 credits All dwelling units that are not included in#1 or#3 3. Large Dwelling Unit: 7 credits Dwelling units exceeding 5,000 sf of conditioned floor area 4. Additions less than 500 square feet: 1.5 credits All other additions shall meet 1-3 above Before selecting your credits on this Summary table,review the details in Table 406.3(Single Family),on page 4. Summary of Table R406.2 and 406.3 Heating Credits-select ONE Options Fuel Normalization Descriptions heating option User Notes P 1 Combustion heating minimum NAECAb 0.0 ❑ 2 Heat pump` 1.0 ❑ 3 Electric resistance heat only-furnace or zonal -1.0 ❑ 4 DHP with zonal electric resistance per option 3.4 0.5 ❑ 5 All other heating systems -1.0 ❑ Energy Credits-select ONE Options Energy Credit Option Descriptions energy option from each p category 1.1 Efficient Building Envelope 0.5 ❑ 1.2 Efficient Building Envelope 1.0 ❑ 1.3 Efficient Building Envelope 0.5 ❑ 1.4 Efficient Building Envelope 1.0 ❑ L 1.5 Efficient Building Envelope 2.0 ❑ 1.6 Efficient Building Envelope 3.0 ❑ 1.7 Efficient Building Envelope ❑ 0.5 ❑ 2.1 Air Leakage Control and Efficient Ventilation 0.5 ❑ 2.2 Air Leakage Control and Efficient Ventilation 1.0 ❑ 2.3 Air Leakage Control and Efficient Ventilation 1.5 ❑ 2.4 Air Leakage Control and Efficient Ventilation El 2.0 ❑ 3.1a High Efficiency HVAC 1.0 ❑ 3.2 High Efficiency HVAC 1.0 ❑ 3.3' High Efficiency HVAC 1.5 ❑ 3.4 High Efficiency HVAC 1.5 ❑ 3.5 High Efficiency HVAC 1.5 ❑ 3.6' High Efficiency HVAC 2.0 ❑ 4.1 High Efficiency HVAC Distribution System 0.5 ❑ 4.2 High Efficiency HVAC Distribution System El 1.0 Prescriptive Path-Single Family 2018 Washington State Energy Code-R 6 D uYYYV