Washington Residential Energy Code 2012: Overview. 17 December 2013 Ben Larson, Ecotope. Code History and Overview. WA Energy Code updated on three year cycle. Previous code was 2009. Current is 2012. Effective 1 July 2013 . http://www.energy.wsu.edu/BuildingEfficiency/EnergyCode.aspx
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17 December 2013
Ben Larson, Ecotope
Okanogan, Ferry, Stevens, Pend Oreille are IECC Zone 6
Of those, only Ferry is the PNW Heating Zone 3, the rest are HZ 2
Overall, little change in the base envelope requirements from 2009. Climate zone reassignment may have slightly relaxed the wall insulation requirement for the formerly WA Zone 2 locationsEnvelope
Target:70% reduction in building energy use by 2031 per WA SB 5854