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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: <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: <br />All dwelling units that are not included in #1 or #3 <br />3. Large Dwelling Unit: <br />Dwelling units exceeding 5,000 sf of conditioned floor area <br />4. Additions less than 500 square feet: <br />All i3the". additions .Shall ri;est ,�Vi <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: Fuel Normalization Descriptions Credits -select ONE <br />Options heating option <br />- ._....._.... ---.._._...-----...- ._.._..__._..__.._.._.... <br />1 Combustion heating minimum NAECAb 0.0 ❑ <br />User (Votes <br />2 Heat pump`_ 1.0 ❑ <br />- <br />_ __ <br />3 Electric resistance heat only -furnace or zonal - -1.0 �- ❑- <br />4 DHP with zonal electric resistance_ per op_t_ion 3.4 ❑ <br />- <br />_-0.5 _ <br />5 *All other heating systems - - - -1.0 _ - -❑ <br />Energy <br />Energy Credit Option Descriptions energy option from each <br />Options <br />category_ <br />1.1 <br />1 M0u11UCi M ��Cle®ale <br />0.5_ <br />1.2 Efficient Building Envelope -- - -� 1.0 <br />_❑_ <br />- ❑ - <br />1.3 <br />- <br />Efficient Building Envelope <br />- <br />0-5 <br />0 <br />1.4 <br />Efficient Building Envelope <br />1.0 <br />❑ <br />-� <br />1.5 <br />Efficient Building Envelope <br />2.0 <br />❑ <br />1.6 <br />-1.7 <br />Efficient Building Envelope <br />- <br />3.0 <br />❑ <br />--- _ <br />Efficient Building Envelope <br />0.5 <br />- ❑_- <br />2.1 <br />_ <br />'Air Leakage Control and Efficient Ventilation <br />- <br />2.2 <br />_ <br />:Air Leakage Control and Efficient Ventilation <br />_0.5-__ <br />1.0 <br />_❑ <br />^-2.3 <br />- ---- <br />2.4 <br />-. <br />3.1; <br />--- <br />*Air Leakage Control and Efficient Ventilation <br />___ - -----........_.......................................--.......... ..........._....... <br />Air Leakage Control and Efficient Ventilation <br />High Efficiency HVAC <br />_ <br />..... 1.5 <br />---- <br />2.0 <br />>........ _... ..... ._ ...---- <br />1.0 <br />_ __-_❑_~_ <br />❑ <br />-- - ---- <br />........ ❑ <br />O <br />3.2 <br />High Efficiency HVAC <br />1.0 <br />O <br />3.31 <br />-3.4 <br />_ - <br />,High Efficiency HVAC- <br />-1.5`_ <br />O <br />�- <br />-- --- <br />3,5 <br />3.68 <br />-'� <br />High Efficiency HVAC <br />- -_..--------...._._._.... _.. <br />High Efficiency HVAC-- <br />High Efficiency HVAC <br />1.5 <br />2.0 <br />_ <br />O <br />r_..........-_- ............... <br />4.1- <br />4.2 <br />-•---__._._.._ -. _-_-.-._ <br />`High Efficiency HVAC Distribution System <br />High Efficiency HVAC Distribution System <br />- <br />0.5 <br />- - --._.__......... <br />1.0 <br />- --O - <br />❑ <br />_.......... _. _._...---....... _.... <br />❑ <br />Prescriptive Path - Single Family 2018 Washington State Energy Code-R <br />