Does Minnesota Require an HVAC License? Who Licenses HVAC Work Instead

No — not for the worker.

DLI's mechanical contractor page states that Minnesota has no state licence requirement for individual employees of mechanical contractors, and that cities may require their own licence or competency card for workers performing mechanical work; DLI does not issue those city credentials.

The state's codebook is separate from licensing: DLI describes the Minnesota Mechanical Code as the 2012 International Mechanical and International Fuel Gas Codes with the amendments in Minnesota Rules chapter 1346.

The state does license one adjacent trade: high pressure piping (steam and process piping) workers, licensed as master and journeyworker pipefitters through DLI.

And our cross-state check recorded Minnesota, as of September 29, 2026, among the states with no state HVAC licence at all — where any licensing of this kind exists, it is local (city or county).

There are no state HVAC licence levels to climb, technician or contractor.

The credentials that exist are narrower.

In Minneapolis, masters and journeymen in fuel gas fitting, refrigeration, warm air/ventilation and steam & hot water must hold a city Certificate of Competency card to perform work there — a Minneapolis credential, not a statewide one.

DLI licenses a different trade statewide: master and journeyworker pipefitters, whose licence covers high pressure piping (steam and process piping), not general HVAC work; unlicensed helpers must be registered or in an approved apprenticeship.

On the business side there is no state mechanical contractor licence either: a company contracts for gas, heating, ventilation, cooling, air conditioning, fuel burning or refrigeration work by filing a $25,000 mechanical contractor bond with DLI and complying with local licensing.

With no state licence there are no state hours, training rules or HVAC licence fees to meet — the requirements our research confirms are local.

Minneapolis competency-card applicants need a minimum of four years of work experience.

The city also asks for at least 576 hours of trade-related education, but our research found that rule on the city page's plumbing/gas-specific section and cannot confirm it applies to every trade.

The card costs $30 per trade once you pass the exam, and if you hold a St. Paul competency card, Minneapolis lets you use it to expedite its card.

For the statewide pipefitter licence, our research did not capture the experience or fee rules — check DLI.

The one statewide cost our research confirms sits on businesses: the $25,000 mechanical contractor bond, filed with DLI for $100 and valid two years.

No one gives a state HVAC exam in Minnesota, because there is no state licence to test for — and the state sets no qualifier or exam rule for mechanical contractors either; those rules are city business.

What our research confirms is that Minneapolis competency-card applicants must pass an exam, and that the card costs $30 per trade once they do.

Who administers that exam, and what it covers, is not established in our research — confirm both with the City of Minneapolis before you schedule anything.

The other exam that matters is federal: covered refrigerant work requires passing the EPA Section 608 certification exam — more on that below.

None at the state level: with no state HVAC licence, there is no state renewal to file and no state CE hours to earn.

For the credentials that do exist, our research did not capture renewal terms: how often Minneapolis competency cards renew, and whether the city requires CE, are questions for the City of Minneapolis, and the DLI pipefitter licence's renewal rules are a question for DLI.

One federal constant: EPA 608 certification does not expire.

There is no Minnesota HVAC reciprocity to apply for: with no state HVAC licence, there is no state agreement under which another state's HVAC licence is honored.

What our research does confirm is recognition between cities: Minneapolis says that if you hold a City of Saint Paul Certificate of Competency card, you can use it to expedite getting a Minneapolis card — an expedited process, not automatic equivalency, and both cards remain city credentials.

For anything else, no state rule decides what happens to an out-of-state credential: any such decision belongs to the city that licenses the work, so ask the building or licensing department where you will work before you assume your licence carries over.

There is no statewide HVAC licence lookup to search, because there are no state HVAC licence records: DLI does not issue these workers' credentials, and the city cards are city records.

The state search that does exist is DLI's license-and-registration lookup — our research recorded its address from the state snapshot but did not confirm what its search returns, so treat it as a starting point and confirm with DLI.

For a Minneapolis competency card, the records are the city's: start with the city's licensing pages rather than the state.

Minneapolis anchors our research.

Masters and journeymen in fuel gas fitting, refrigeration, warm air/ventilation and steam & hot water need a city Certificate of Competency card to perform work there, and applicants need a minimum of four years of work experience.

On the contractor side, Minneapolis's gas fitter licence, for example, requires the State of Minnesota $25,000 bond and a city competency card, and DLI says mechanical contractors must comply with local licensing on top of filing the bond.

Qualifier, exam and insurance rules for mechanical contractors are set by cities, not the state.

Our research did not survey St. Paul, Duluth or Rochester's HVAC licensing, so treat each city as its own rulebook and confirm with the building or licensing department where the work happens.

Yes, if the work is the kind the federal rule covers.

Under 40 CFR 82.161, any person who could reasonably be expected to violate the integrity of the refrigerant circuit while maintaining, servicing, repairing or disposing of appliances containing a class I or class II refrigerant or a non-exempt substitute refrigerant must pass an exam from an EPA-approved technician certification program.

That federal requirement sits on top of whatever a city requires, not instead of it.

EPA 608 comes in Type I, Type II and Type III versions, and Universal certification covers all of the appliance types described for those three.

It does not expire.