February 21, 2024

According to another analysis conducted by PNNL for DOE, “adopting the 2021 IECC in Michigan is expected to result in homes that are energy efficient, more affordable to own and operate, and based on current industry standards for health, comfort and resilience.”4 More specifically, the residential 2021 IECC will provide Michigan-specific energy savings of 10.7% compared to the current state energ. [...] 3 Pacific Northwest National Laboratory, Cost-Effectiveness Analysis of the 2021 IECC for the State of Michigan, August 2023 4 Pacific Northwest National Laboratory, Cost-Effectiveness of the 2021 IECC for Residential Buildings in Michigan, July 2021 5 Pacific Northwest National Laboratory, Cost-Effectiveness of the 2021 IECC for Residential Buildings in Michigan, July 2021 MEEA Comments on the 20. [...] The most common code change concerns are usually related to the additional efficiency requirements and the use of continuous insulation in the prescriptive path. [...] Adopting the 2021 IECC Will Significantly Help the State Achieve its Climate Goals Lastly, the adoption of the 2021 IECC codes aligns with the broader environmental and economic goals set forth for the state and is crucial to achieving the objectives laid out in Governor Whitmer's MI Healthy Climate Plan. [...] The 2021 IECC Brings Benefits to Michigan The adoption of the unweakened 2021 IECC is a cost-effective way to gradually increase the level of efficiency of residential and commercial buildings.