2012 was the first year the International Energy Conservation Code required residential construction to pass an air leakage rate test, better known as a blower door test. My area of the country requires the test to be at or below 3 air changes per hour at the test pressure of 50 pascals (ACH50). (Other areas, typically warmer climates require 5 ACH50.) Most new construction in my market has no problem passing the test, but I have had a handful of houses fail, usually the failed tests are by a builder having their first blower door test or the project is a very small home.
Continue reading “Testing-Failed a Code Required Blower Door Test, Now What?”
This post was originally published in the April 2022 issue of the Journal of Light Construction. www.jlconline.com
Blower door testing a home requires much more than simply setting up the equipment and running the test.
When setting up a house for a blower door test, should you seal off the bath fans? How do you address that six-inch combustion air vent in the mechanical room? Should the overhead garage door in the attached garage be open or closed? Continue reading “Testing-Setting up a Home for a Blower Door Test”