Department of Energy analysis finds significant energy and carbon improvements in 2021 IECC

Preliminary analysis released by the U.S. Department of Energy finds that the residential provisions of the 2021 edition of the International Energy Conservation Code (IECC) are 9.38 percent more efficient than the 2018 edition and reduce greenhouse gas emissions by 8.66 percent. The International Code Council has developed the IECC for over three decades. With this new analysis, the IECC has seen a 40 percent improvement in energy savings starting from the 2006 edition. Read more here.

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