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Dept. of Energy issues model energy code determinations for commercial, residential buildings

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Codes and Standards

Dept. of Energy issues model energy code determinations for commercial, residential buildings

2021 IECC offers 9.4% site energy savings.


By Peter Fabris, Contributing Editor | August 10, 2021

Courtesy Pixabay

The U.S. Department of Energy has issued pre-publication Federal Register notice regarding updated model building energy codes.

The 2021 International Energy Conservation Code (IECC) and ANSI/ASHRAE/IES Standard 90.1-2019 will increase energy efficiency in residential and commercial buildings, the notice says. The IECC will increase efficiency in residential buildings by 9.4%, DOE says.

ANSI/ASHRAE/IES Standard 90.1-2019 will increase efficiency in commercial buildings by 4.7%, according to DOE estimates. Each state must review and certify their state building codes relative to the updated editions of the IECC and Standard 90.1.

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