Service Description

A blower door test reveals air leaks in your home using a special fan. This is the industry-standard method to evaluate the airtightness of your home’s building envelope. For homes with a great amount of air leakage, we recommend air sealing and sometimes installing additional insulation for increased comfort, improved indoor air quality, and greater energy and utility cost savings.

Determining Air Leakage with a Blower Door Test

A blower door test begins by closing all windows and doors and turning all HVAC systems off. We then insert a frame and flexible panel into an exterior doorway of your home. Using a variable speed fan, air is then drawn out of your home, creating a low pressure interior. This results in air from the outside being pulled in through cracks and gaps. A pressure gauge takes measurements on the amount of air entering, thereby assessing the amount of air leakage in your home.


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