Maine HVAC License Requirements
Partly. Maine licenses only heating fuel work through the Maine Fuel Board (OPOR); other HVAC work has no state license. Anyone who handles refrigerant also needs federal EPA 608 certification.
Partial state license · By BrazeJobs Team · Updated
License tiers
| Apprentice | Apprentice (fuel) |
| Journeyman | Journeyman oil/solid fuel, propane/natural gas |
| Master | Master (4 years licensed, 2 as journeyman) |
| Contractor | Master |
Requirements
| Exam | State exam |
| Renewal | 2 years |
| Local license | Varies by city |
| Board | Maine Fuel Board (OPOR) |
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.
Exam
| Exam provider | Prov (for Office of Professional and Occupational Regulation) |
| Questions | Oil burner technician: 75; propane and natural gas (large appliances): 50 |
| Time | Oil: 180 minutes; Gas: 120 minutes |
| Passing score | 70% |
| Bulletin date | 2026-10-31 |
Maine licenses heating fuel trades only (Fuel Board); no AC/refrigeration exam.
- Source: provexam.com · checked November 6, 2026
Licensed in another state or the military
| Military experience credit | Yes: military training and experience considered for exam eligibility and licensure |
| Military spouses | Spouses moving on military orders may get a license under SCRA; temporary license for active or recently separated military or spouse while applying |
Veterans and Gold Star spouses get processing priority.
- Source: maine.gov · checked November 6, 2026
Apprenticeship
| Registering agency | State Apprenticeship Agency (Maine DOL Apprenticeship Program) |
- Source: apprenticeship.gov · checked November 6, 2026
- Source: maine.gov · checked November 6, 2026
Mechanical code
| Code in force | 2021 IMC with state amendments |
MUBEC adoption effective April 7, 2025, with amendments in Rule Chapters 1-7.
- Source: maine.gov · checked November 5, 2026