How does the blower door test Work? To conduct a blower door test, an infiltrometer or blower door fan is placed in the main entry doorway to depressurize the house or suck out air from the interior. This process will cause outside air to be drawn into the house through leakage points.
The envelope leakage limit in the 2021 IECC is 3 ACH for detached single-family attached homes and 0.3 CFM per square foot of enclosure area for any type of attached homes, as tested with a blower door. Passing the envelope leakage test will require careful planning and preparation.
Earning an IDL certification is a cost-effective way for contractors to gain the skills needed to offer duct leakage and blower door field tests, in compliance with IECC codes. This will allow you to have even more skills that contractors, homeowners, and building code officials will find very valuable. is a comprehensive way to not only learn
completing a pair of tests with the blower door in the house-outside interface and the garage door closed. In the first test, the door between the house and garage is opened (B), and then in the second test the door between the house and garage is closed (D) as shown in Figure 2. In configuration (D), only the house zone is directly pressurized (or
As of Jan. 1, 2020, home performance contractors will need to satisfy the new Georgia blower door certification requirements, which seem to point to BPI Infiltration & Duct Leakage, BPI Building Analyst, and/or RESNET HERS Rater Certification. Learn more about these certification recommendations.
A blower door test is conducted with a unique looking machine that is installed in the entryway of a home, usually the front door. It has a powerful fan that, once turned on, pulls air from inside the home and pushes it outside, essentially creating a vacuum. Scientifically speaking, nature will attempt to fill a vacuum, and it does this in a
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how does a blower door test work
