Blower Door Testing
Third-party air leakage testing for homes, by a Retrotec-certified tester.
How a blower door test works
A blower door fan is sealed into an exterior doorway and used to depressurize or pressurize the building to a set pressure difference, typically 50 pascals. The airflow needed to hold that pressure shows how leaky the building envelope is.
Results are commonly reported as CFM50 (airflow at 50 Pa) and ACH50 (air changes per hour at 50 Pa).
For Washington builders
The Washington State Energy Code requires air leakage testing of new homes. Bell Energy Solutions provides third-party blower door testing.
For homeowners
A blower door test measures how much air your home leaks.
Testing a commercial building? See commercial blower door testing, including multi-fan setups.
- Certification
- Retrotec certified for residential blower door testing
- Area
- Eastern Washington and North Idaho, based in Spokane
- Pricing
- Contact us for a quote.
Other services
Consulting & Design
Consulting and design help to build comfortable, quality homes.
DetailsCommercial Blower Door Testing
Commercial air leakage testing, including multi-fan setups, to help you meet the Washington State Energy Code.
DetailsThermal Imaging
Active thermography (infrared imaging) of the building envelope.
DetailsRadon Testing
Radon testing by an NRPP-certified professional.
DetailsEnergy Code Compliance
Help achieving Washington State Energy Code compliance.
DetailsERI Scores
Energy Rating Index scores that show the results of design and testing.
Details