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 - warehouse

Any building that contains conditioned space must comply with either the IECC or ASHRAE Standard 90.1.The IECC exempts buildings with a peak design rate of energy use for space conditioning less than 3.4 Btu/h•ft2 from compliance with...

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...