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Northern Built

Northern Built

A Cold Climate Construction and Energy Blog

Tag: Zonal blower door testing

Posted on December 18, 2020December 18, 2020

Energy Audit-Advanced Blower Door Testing-Zonal Pressures

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”

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