How-To

Understanding Blower Door Tests

The most-important door in your house might just be a blower door

Issue 195 (Houses)

Used by energy auditors, blower-door tests reveal where a home isn’t airtight. Leaky houses lose heat and invite moisture and air pollution into the living space. Follow along on a home-energy audit to learn what a blower-door test reveals and what fixes energy auditors recommend.

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