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2021 Code changes took place 3/15/2024 .
Make sure to review energy credit information and note that any credits in section 2 will require you to test to a lower number. Review new code at the link below.
Effective March 15, 2024
Based on the 2021 IECC. Please note that "Residential" includes One- and Two-family dwellings, Townhouses and R-3 buildings three stories or less, and Group R-2 buildings three stories or less with dwelling units that are accessed directly from the exterior. "Commercial" includes all buildings not covered under "Residential."
https://www.energy.wsu.edu/BuildingEfficiency/EnergyCode/AdditionalResources.aspx#New
Link to 2021 residential Code: https://sbcc.wa.gov/sites/default/files/2023-4/2021_WSEC_R_1stPrint-1_042623.pdf
Link to 2021 commercial Code: https://sbcc.wa.gov/sites/default/files/2023-05/2021_WSEC_C_2ndPrint_0518023.pdf
ADVANCED BLOWER DOOR TEST COMPANY
425-870-1837
What is a blower door test ?
A blower door is a powerful fan that mounts into a frame that is placed in the opening of an exterior door. The fan pulls air out or pushes air into the building. It will either pressurize the building or depressurize the building. Air will be pulled through or pushed out any unsealed penetrations in the building. The test determines the air infiltration rate of tightness of the building.
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