Learn More about our Blower Door Test

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A blower door is a machine that is used to measure air tightness of homes. It consists of an adjustable frame, a fitted cover, a fan, and a pressure gauge.

First, the flexible frame is fitted to an exterior door. Then, the fan is used to pull air out of the home or unit which depressurizes the air inside. Air infiltration can then be determined by measuring how much air from outside leaks in through openings and unsealed cracks.


Members of the 15 lightyears perform an blower door test to determine how much air is leaking into the home. More information about energy testing and blower doors can be found on our website at https://www.15lightyears.com/energy-performance/