Michigan HVAC License Reciprocity

If you hold an HVAC or mechanical contractor license in another state and you're moving to Michigan, the short answer is: Michigan has no direct reciprocity agreement with other states. You'll generally need to complete LARA's Michigan application process, although documented out-of-state experience can be used.

Why Michigan Doesn't Do Reciprocity

Michigan regulates mechanical contracting under the Skilled Trades Regulation Act (PA 407 of 2016), which establishes its own classification system, experience standards, and examination requirements. These differ significantly from the licensing structures in other states — different classification scopes, different experience thresholds, different code references.

Some states have no HVAC licensing at all. Others license at the county or city level rather than the state level. Michigan's ten-classification system under MCL 339.5807 doesn't map neatly onto any other state's framework, which makes license-transfer agreements impractical.

What Out-of-State Contractors Must Do

The process is identical to what in-state applicants go through:

1. Document three years (6,000 hours) of experience per requested standard classification. Classifications G and H instead use three years of active licensure in Class E or F, respectively, or an equivalent qualification. Your out-of-state hours count — LARA doesn't require the experience to have been earned in Michigan. The critical part is documentation: notarized affidavits signed under penalty of perjury by your former employers, with detailed descriptions of the work performed (equipment types, BTU ratings, fuel classes, system configurations).

2. Submit a LARA application through the MiPLUS portal with a $300 non-refundable fee. Include all experience affidavits, education credentials if applicable, and criminal history disclosures.

3. Pass the PSI classification exams within 365 days of your eligibility approval date. The exams test Michigan-specific code knowledge — Michigan Mechanical Code, International Fuel Gas Code as adopted by Michigan, and Michigan Residential Code. Your familiarity with another state's code references won't directly transfer, though the underlying mechanical principles are the same.

4. Register locally in every Michigan municipality where you plan to pull permits ($15 per jurisdiction).

The Experience Documentation Challenge

Out-of-state applicants face a specific obstacle: getting former employers in another state to sign Michigan's experience verification forms. Your previous employer in Ohio or Indiana may not understand LARA's documentation requirements or cooperate with the format.

If a former employer refuses to sign or has gone out of business, LARA provides an appeal process. Send the notarized verification form to the former employer via certified mail with a return receipt. If they don't respond within 30 days, you can file a formal appeal with the Board of Mechanical Rules, including the certified mail receipt, proof of delivery, and supporting documents like W-2 forms, pay stubs, or tax transcripts.

These appeals are reviewed on a case-by-case basis during the Board's quarterly meetings. They're not rubber-stamped — the Board scrutinizes appeals heavily, and supplemental documentation is essential.

Exam Preparation Differences

Even experienced contractors from other states need to prepare specifically for Michigan's exams. The open-book format tests your ability to navigate Michigan's adopted codes, not the codes you used in your previous state. Key differences to watch for:

• Michigan follows the Michigan Mechanical Code (based on the International Mechanical Code with state amendments)
• Local amendments and state-specific administrative rules may differ from what you're used to
• The International Fuel Gas Code provisions adopted by Michigan may differ from your previous state's version

Buy current Michigan-specific code books and tab them before your exam. Code familiarity from another state helps with mechanical principles, but the specific section numbers, tables, and Michigan amendments are what you'll need to reference under time pressure.

Timeline Expectations

For an out-of-state contractor with organized documentation, expect:

• Documentation assembly: 2–4 weeks (longer if you need to track down former employers)
• LARA review: 4–8 weeks during peak season
• Exam preparation and testing: 2–8 weeks depending on how many classifications you pursue
• Local registration: 1–2 weeks per municipality

Total realistic timeline: 2–5 months from first application to pulling your first permit, assuming no documentation complications.

The Michigan HVAC License Guide walks through the entire application process with specific guidance for out-of-state applicants, including documentation templates and the appeal process for uncooperative former employers.

See more Michigan guides →