By Randy Williams | September 29, 2022. Air-sealing penetrations made to accommodate ductwork is key to passing a code-required blower-door test. In 2012, the International Energy Conservation Code (IECC) started requiring residential construction pass an air leakageā€“rate test, better known as a blower-door test.
Letā€™s use a fictional blower-door test as an example of how much information CFM50 can supply. Iā€™ve calculated a homeā€™s volume at 15,000 cubic feet, 4600 square feet of surface area, and the blower door measures 1000 CFM at the test pressure of 50 pascals.

Using a Blower-Door Test and Interpreting the Results An introduction to the technology and calculations for measuring a homeā€™s energy performance By Randy Williams | February 4, 2021 Iā€™ve talked about blower-door testing several times on Green Building Advisor and on my blog, Northern Built.

Simply put a blower door is a diagnostic tool used to measure how much air infiltration (air leakage) occurs in a house. The blower door apparatus allows testers to apply a consistent and measurable pressure to the house so that houses can be compared accurately. How A Blower Door Works
What is a blower door test? What's the cost? How do you find a company to do one? Guides Walls and Roofs Air and vapour barriers A blower door test identifies air leakage in a home; you can find and fix those air leaks for a more airtight, mold & rot-free and energy-efficient sustainable green home. Ecohome Updated: May 29, 2021 Mike Reynolds
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what is a blower door test