Frequently Asked Questions (FAQs)

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Building Type

Commercial (34)
Residential (22)

Code Referenced

International Energy Conservation Code (IECC) (18)
ASHRAE Standard 90.1 (13)
2012 IECC (8)
2015 IECC (4)
2018 IECC (3)
ASHRAE Standard 90.1-2013 (3)
ASHRAE Standard 90.1-2010 (2)
ASHRAE Standard 90.1-2016 (2)
ASHRAE Standard 90.1-2019 (2)
ASHRAE Standard 189.1 (2)
2021 IECC (1)
ASHRAE Standard 90.2 (1)
International Green Construction Code (IgCC) (1)

FAQ State/Territory

Focus

(-) Compliance (75)
Code Development (3)
Adoption (2)
Enforcement (2)

Software/Tools

COMcheck (22)
REScheck (12)
REScheck-Web (2)
COMcheck-Web (1)

Building Energy Codes Program is a resource of the U.S. Department of Energy's Building Technologies Office.
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