Blower-Door Test
Precise air-leakage measurement using a calibrated fan and manometer — the diagnostic core of any real energy audit.
What's Included
Included in this audit
- Calibrated blower-door fan setup
- Manometer pressure-differential measurement
- Air-changes-per-hour (ACH) calculation
- Leak-location identification during the test (often paired with thermal imaging)
- Baseline reading for before/after comparison on air-sealing work
- Written results explained in plain terms
Who It's For
Homeowners who want an objective, measured number for their home's air leakage — not just a visual inspection guess — whether as a standalone test or as part of a full audit.
A blower-door test depressurizes your home with a calibrated fan mounted in a doorway, then measures airflow with a manometer to quantify exactly how much outside air is leaking in. It's the single most objective way to measure a home's air-tightness, and it's what separates a real energy audit from a walkthrough guess.
Common Questions
Blower-Door Test FAQ
Is a blower-door test disruptive to my home?
The setup takes some time and closes off doors/windows temporarily during the test itself, but it's not invasive — no drilling, no damage. We'll walk you through what to expect before starting.
Can a blower-door test find specific leaks, not just a total number?
Yes — while the house is depressurized, we can often locate specific leak points by hand or with a thermal camera, since air rushing through a gap is easier to detect under those conditions.
Interested in Blower-Door Test?
Tell us about your home — we'll schedule a measured, data-driven assessment and give you an upfront estimate.