Frequently Asked Questions (FAQs)

Topics - air leakage - mechanical - ducts - Residential - duct testing - testing
Both the 2009 and 2012 IECC require duct tightness to be verified. Verification can take place via either a post-construction test or a rough-in test. For the post-construction test, leakage measurement must be made across the entire system,...
Topics - air leakage - Commercial
Yes, in Section 402.4 of the 2012 IECC, testing is now required instead of an option between testing or visual inspection such as in the 2009 IECC.  Also, the air leakage rates changed. Air Leakage Rates 2009 IECC 2012 IECC Climate zones 1-2...