EPA 608 vs Michigan HVAC License

This is the confusion that costs Michigan HVAC techs the most money and legal exposure: thinking that an EPA Section 608 certification lets you contract for work independently. It doesn't. The EPA credential and the Michigan Mechanical Contractor License exist in completely separate regulatory frameworks, and most contractors need both.

What EPA Section 608 Actually Covers

EPA Section 608 is a federal environmental regulation under the Clean Air Act (40 CFR Part 82, Subpart F). It requires anyone who services, maintains, repairs, or disposes of equipment containing regulated refrigerants to hold certification. The certification comes in four types:

• Type I: Small appliances
• Type II: High-pressure systems (residential AC, heat pumps)
• Type III: Low-pressure systems (chillers)
• Universal: All of the above

The certification is lifelong — no renewal required — and it applies to the individual technician. Its purpose is environmental: proper refrigerant recovery and handling to prevent ozone depletion and greenhouse gas emissions.

What EPA 608 does not do: it provides zero legal authority to run a business, bid on projects, install mechanical systems, modify ductwork, pull municipal permits, or supervise mechanical work in Michigan. You can't even legally advertise HVAC services with only an EPA card.

What the Michigan Mechanical Contractor License Covers

The state license, issued by LARA under the Skilled Trades Regulation Act (PA 407 of 2016), grants the legal authority to contract for mechanical work. This is the credential that lets you:

• Bid on residential and commercial HVAC jobs
• Pull mechanical permits at local building departments
• Operate an independent contracting business
• Hire technicians and supervise their work
• Maintain eligibility to file mechanics liens on qualifying residential projects

For a standard classification, eligibility requires 6,000 hours of documented experience, a $300 application fee, and passing the relevant classification exam through PSI Services. Classifications G and H instead use active-licensure or equivalent-experience pathways.

Why You Need Both

The state license doesn't replace the federal EPA requirement, and the EPA certification doesn't replace the state license. They regulate different things:

• If you contract for HVAC work but never touch refrigerants (pure heating installations, ductwork, gas piping), you need the state license but technically not EPA 608
• If you handle refrigerants as a W-2 employee under someone else's contractor license, you need EPA 608 but not your own state license
• If you want to run your own HVAC business that services systems with refrigerants — which describes most residential HVAC operations — you need both

Refrigerant distributors also check EPA 608 credentials before selling HCFC or HFC refrigerants. Your state contractor license doesn't satisfy that requirement.

The Penalty Gap

Working without EPA 608 certification while handling refrigerants exposes you to federal penalties. Working without a Michigan Mechanical Contractor License while contracting for mechanical work is a state misdemeanor, carrying fines of $5,000 to $25,000, potential jail time up to one year, and the loss of mechanics lien rights on residential projects.

Some techs work side jobs with nothing but an EPA card for years before getting caught. The trigger is usually a local building department — they pull a permit, a code official asks for the contractor's state license number, and the whole operation unravels.

A Common Scenario

A technician has held a Universal EPA 608 certification for five years, working as a W-2 service tech for a large HVAC company. They decide to go independent and start taking their own residential calls. Their first furnace replacement goes smoothly — until the homeowner's insurance company requests proof of a licensed contractor, or the local building department flags the unpermitted installation during a code sweep.

The path forward: apply for a Michigan Mechanical Contractor License through LARA, document your 6,000 hours of experience under your previous employer, pass the relevant classification exams, and register locally. Your existing EPA 608 certification remains valid throughout this process — you just can't legally operate independently until the state license is in hand.

The Michigan HVAC License Guide breaks down both the federal EPA pathway and the state licensing sequence so you can see exactly where each credential fits in your compliance checklist.

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