Complete guide to hvac contractor requirements in Michigan. Michigan licenses mechanical contractors by classification. Applicant needs 3 years (6,000 hours) per class. A 2-year DOL-approved HVAC program credits up to 1 year. Separate PSI exam per classification (55 questions, HVAC Equipment class is 100 questions). 75% to pass.
Last verified: 2026-04-18.
Michigan licenses mechanical contractors by classification. Applicant needs 3 years (6,000 hours) per class. A 2-year DOL-approved HVAC program credits up to 1 year. Separate PSI exam per classification (55 questions, HVAC Equipment class is 100 questions). 75% to pass. Issued by: Michigan LARA, Mechanical Division / Board of Mechanical Rules. A licensing exam is required. Minimum 3 years of experience required.
Visit official licensing websiteLicense Type
Hvac Contractor
Estimated Total Cost
$200 - $1,500 (varies by jurisdiction)
Processing Time
2-8 weeks typical
Renewal Period
1-2 years (varies)
Register your LLC or corporation with the Michigan Secretary of State. You'll need this before applying for any licenses.
Apply for a federal Employer Identification Number (EIN) from the IRS. This is free and can be done online at irs.gov.
Michigan requires verifiable experience in the trade. The minimum is 3 years.
Michigan requires passing a licensing exam. Study materials are typically available from the testing provider.
Obtain general liability insurance (typically $500K-$1M minimum) and workers' compensation insurance if you have employees.
Check if Michigan or your local jurisdiction requires a surety bond. Your insurance agent can help with this.
File your application with Michigan LARA, Mechanical Division / Board of Mechanical Rules along with all required documentation and fees.
Register for Michigan sales tax and any applicable local business taxes.
Minimum: $500,000 - $1,000,000 (varies by jurisdiction)
Required in most states when you have 1+ employees
$5,000 - $25,000 bond required in some states and cities
Our AI compliance assistant creates a personalized checklist for your specific situation in Michigan.
This guide is for informational purposes only and does not constitute legal advice. Licensing requirements change frequently. Always verify current requirements with Michigan's official licensing board and consult a local attorney for legal questions. Last updated: April 2026.