YES — Michigan has adopted 2015 IECC which requires HVAC loads be calculated per ACCA Manual J for new construction and major renovations.
Michigan has adopted 2015 IECC as the statewide energy code for residential construction.
Primary zone covering Detroit and surrounding areas
Additional zone in Michigan
Additional zone in Michigan
Local Michigan contractors typically charge $150-400 for Manual J calculations. AutoHVAC offers your first Manual J calculation completely FREE with permit-ready results in 60 seconds — no credit card required.
Yes. Michigan follows 2015 IECC which requires heating and cooling loads be calculated per ACCA Manual J for permits on new construction and major HVAC work.
You can get a free Manual J calculation for Michigan instantly at AutoHVAC — upload your blueprint and receive a permit-ready report in 60 seconds. Alternatively, local Michigan HVAC contractors charge $150-400 with 3-7 day turnaround, or you can use DIY software like Wrightsoft or CoolCalc ($5-200+/month).
Michigan includes IECC climate zones 5A, 6A, 7. Zone 5A is most common, covering cities like Detroit, Grand Rapids, Warren. Climate zone data determines design temperatures and insulation requirements used in Manual J calculations.
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