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
Duct testing is offered for new residential and commercial construction, HVAC contractors and home owners. We also do testing on replacement furnaces for code requirement.
A duct test will checks the leakage in the duct system. This test is required on all new construction and replacement of all furnaces.
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Duct testing is done by sealing off and pressurizing the ventilation system. It will be tested with our equipment at 25 Pascals.