blower door test

Published 02/28/2012 at 375 × 500 in Illinois eyes efficiency gains through building code

A blower door test is a way of measuring how airtight, and therefore energy-efficient, a house is. (Photo by Brandon Stafford via Creative Commons)

A blower door test is a way of measuring how airtight, and therefore energy-efficient, a house is. (Photo by Brandon Stafford via Creative Commons)

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