Minnesota HVAC License Requirements
No. Minnesota has no statewide HVAC license; cities and counties license HVAC work. Anyone who handles refrigerant also needs federal EPA 608 certification.
Local only · By BrazeJobs Team · Updated
Requirements
| Local license | Varies by city |
Local licenses in Minnesota
Minneapolis
CityHVAC Class A or B contractor license
Minneapolis Business Licenses and Consumer Services
Class A: install, fix and clean HVAC systems; Class B: cleaning only. Requires a State of Minnesota $25,000 bond. City also lists gas fitter, refrigeration systems installer and steam/hot water installer licenses and competency cards.
- Source: minneapolismn.gov · checked November 5, 2026
St. Paul
CityWarm air and ventilation business trade licenses; master certificate of competency
St. Paul Department of Safety and Inspections
Business trade license (Legislative Code ch. 369) needs a current St. Paul Master Warm Air and/or Ventilation certificate of competency or proof of a Minneapolis master's card. Page edited Nov 3, 2026.
- Source: stpaul.gov · checked November 5, 2026
Federal: EPA 608 certification
| Rule | Federal certification required to service or dispose of refrigerant equipment and to buy refrigerant |
Who: anyone who maintains, services, repairs or disposes of equipment that could release refrigerant (attaching gauges, adding or removing refrigerant). Types: Type I (small appliances), Type II (high- and very high-pressure), Type III (low-pressure), Universal (all types). Expiry: credentials do not expire. Buying refrigerant: sellers may sell only to certified technicians or employers of one, with limited exceptions (e.g. small cans of MVAC refrigerant). EPA does not issue cards; approved certifying organizations do. Universal requires a proctored core exam.
Apprenticeship
| Registering agency | State Apprenticeship Agency (Minnesota DLI) |
- Source: apprenticeship.gov · checked November 6, 2026
- Source: dli.mn.gov · checked November 6, 2026
Mechanical code
| Code in force | 2018 IMC with state amendments (as 2020 Minnesota Mechanical Code) |
2020 Minnesota State Building Code effective March 31, 2020 (mechanical April 6, 2020); enforceable by a municipality only where adopted by local ordinance.
- Source: revisor.mn.gov · checked November 5, 2026