Michigan climate & load drivers
- IECC climate zone: 5A-6A
- Annual load split: Heating-dominant — annual heating load exceeds cooling load (6,700 HDD / 800 CDD)
- Dominant heating fuel: Natural gas — piped utility supply through state pipeline network
- Dominant cooling system: Central air conditioning paired with separate heating equipment
Michigan licensing & permits
- License status: Statewide license required
- License board: Michigan LARA — Mechanical Contractor license under Public Act 192 of 1984 with eight specialty designations (official site)
- Permit: state-issued mechanical permit required
How HVAC replacement costs vary in Michigan
State-specific code or insurance rule: Michigan's Mechanical Contractor Act (Public Act 192 of 1984) splits the trade into eight specialty designations — HVAC Equipment, Hydronic Heating, Refrigeration, Boilers, Limited Heating Service, Specialty Heating, LP Distribution, and Solid Fuel — each requiring its own exam and 6,000 hours of journey-level experience.
Cities in Michigan
Compare HVAC replacement pricing for 31 cities across Michigan.
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