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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 />efore"sg your'cre e ectmdits on this Summary table, review the details in Table 406.3 (Single Family), on page 4. <br />Summary of Table R406.2 <br />Heating <br />Options <br />Fuel Normalization Descriptions <br />Combustion heating minimum NAECAb <br />Heat pump` <br />Electric resistance heat only - furnace or zonal <br />DHP with zonal electric resistance per option 3.4 <br />----- <br />;All other heating systems <br />j <br />--- -- - ----- - - <br />Credits - select ONE <br />heating option User Notes <br />0.0 <br />1.0 ❑ <br />-1.0 1❑ <br />0.5 ❑ <br />- <br />1 0 ❑ <br />Credits - select ONE <br />1 <br />2 <br />3 <br />4 <br />5 <br />Energy <br />Options' <br />Energy Credit Option Descriptions <br />energy option from each <br />j <br />- <br />Efficient Building Envelope <br />_ <br />Efficient Building Envelope <br />Efficient Building Envelope <br />Efficient Building Envelope <br />Efficient Building Envelope <br />--- <br />- - category <br />0.5z <br />-.-----___ <br />1.0 <br />0.5 <br />1.0 <br />2.0 <br />------... <br />d <br />l <br />El <br />❑ <br />❑ <br />❑ <br />❑ <br />1.1 <br />1.2 <br />1.3 <br />1.4 <br />1.5 <br />- <br />1.6 <br />- ---------------------------------------------- <br />: Efficient Building Envelope <br />- <br />3.0 <br />---------- <br />1.7 <br />Efficient Building Envelope <br />0.5 <br />_❑ <br />❑ <br />2.1 <br />Air Leakage Control and Efficient Ventilation <br />0.5 <br />❑ <br />2.2 <br />Air Leakage Control and Efficient Ventilation <br />1.0 <br />❑ <br />_ <br />2.3 <br />!Air Leakage Control and Efficient Ventilation <br />1.5 <br />❑ <br />2.4 <br />Air Leakage Control and Efficient Ventilation 2.0 <br />❑ <br />3.1a <br />!High Efficiency HVAC <br />-_-----___ <br />1.0 <br />❑ <br />3.2 <br />High Efficiency HVAC <br />___-_.- <br />1.0 <br />._ <br />❑ <br />3.3a <br />- <br />High Efficiency HVAC <br />-- <br />1.5 ---------------- <br />❑ <br />3.4 <br />High Efficiency HVAC <br />1.5 <br />❑ <br />3.5 <br />High Efficiency HVAC <br />1.5 <br />❑ <br />3.6a <br />High Efficiency HVAC <br />2.0 <br />❑ <br />4.1 <br />Hi h Efficiency HVAC Distribution System <br />0.5 <br />❑ <br />......... <br />4.2 <br />----_g-----------------------..._Y..................-... - <br />High Efficiency HVAC Distribution System <br />1.0 <br />❑ <br />Prescriptive Path - Single Family 2018 Washington State Energy Code-R <br />2 <br />