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Committee approves Washington residential integrated energy draft, removes 2024 IECC as parallel option
Summary
The Mechanical Ventilation, Plumbing and Energy Code Committee voted to advance the Washington State residential integrated energy code draft to the council while removing the 2024 IECC as a parallel option for accepting code-change proposals; the 2024 IECC will remain listed as a reference only.
On March 14, 2025, the Mechanical Ventilation, Plumbing and Energy Code Committee voted to advance the Washington State residential integrated energy code draft to the council while striking consideration of the 2024 International Energy Conservation Code (IECC) as a parallel option for receiving code-change proposals. Committee members said the 2024 IECC will remain listed in the report as a reference but not be treated as a base document to accept proposals against.
Committee members said the decision matters because accepting two full base documents would significantly increase the volunteer and staff workload and could split code-proposal proponents between the two bases, potentially leaving many proposals without…
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