Air Leakage Testing for Bigger Buildings
One fan can't move enough air for an apartment building or a commercial shell. We set up multiple fans together, run them as one test, and give you numbers your inspector can use. Call (253) 802-8738.
Multifamily and townhomes
Apartment buildings and townhome blocks that need a whole-building air barrier test.
Mixed-use and commercial
Small commercial and mixed-use buildings, tested under the Washington State Energy Code.
Retests after air sealing
Sealed up the leaks and need to prove it? We come back and run it again.
When one fan isn't enough
A single-family house usually tests fine with one blower door. Larger floor plates, taller buildings, and leakier shells need more airflow to reach test pressure.
That's where dual-fan and multi-fan setups come in: fans in one doorway or spread across several, all logged together.
Common projects: multifamily and townhome blocks, mixed-use and small commercial buildings, whole-building air barrier tests under the Washington State Energy Code, and retests after air sealing.
What test day looks like
We walk the building with your super and confirm what's sealed, taped, or left open. Fans go into the door frames, with gauges and hoses run to each one.
Logged together
One laptop, one clock
Leak hunting
While the building is under pressure
Written report
For the permit file
Before you call
It helps to have a few numbers from your plans or spec. Not sure which standard applies? Ask. We'll sort it out with you or your design team.
Square footage
Total floor area of the building.
Number of stories
Taller buildings need more airflow.
Test standard
Listed on your plans or spec.