What is the Difference Between ACH & ACH50?
This photo is of a blower door test we performed at my own house using a Retrotec blower door. You will notice the 15 passenger van outside the window which is a dead giveaway. A blower door is used to measure the tightness of a building and is often discussed in terms of an ACH50 […]
Read more
loading

To continue you need to agree to our terms.

The HVAC School site, podcast and daily tech tips
Made possible by Generous support from