Frequently Asked Questions (FAQs)

Topics - Commercial - Federal - Manufactured Housing - Multi-Family - Municipal - Residential
Copies of the International Energy Conservation Code (IECC) can be purchased from the International Code Council website. Copies of ASHRAE standards can be purchased from the ...
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 - lighting - Residential
The 2009 IECC requires that a minimum of 50% of the lamps in permanently installed lighting fixtures be high-efficacy lamps (2009 IECC, Section 404.1). The 2012 IECC has increased the minimum percentage from 50% to 75%, along with an exception for...
Topics - Commercial - Residential - code
The IECC addresses mixed occupancies by stating that commercial occupancies must comply with the commercial portion of the code and...
Topics - Residential - building
The term “residential building” includes: detached one-or-two family dwellings having not more than three stories above grade plane; buildings that consist of three or more attached townhouse units and have not more than three stories above grade...