Tag: Zonal blower door testing

Most of us by now know what a blower door is.  A tool to measure the air tightness of a house.  I’ve owned my Minneapolis Blower Door since 2009.  Many states have adopted mandatory tightness testing on all new construction.  In my area, the minimum is three air changes per hour at 50 Pascals (3 ACH50), Continue reading “Energy Audit-Advanced Blower Door Testing-Zonal Pressures”