New Hampshire HVAC License Requirements
Partly. New Hampshire licenses only gas fitting work through the NH Mechanical Licensing Board (OPLC); 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 | Fuel Gas Fitter Trainee |
| Journeyman | Gas Fitter |
| Master | No state license |
| Contractor | No state license |
Requirements
| Exam | State exam |
| Fees | Exam application $190 |
| Renewal | 2 years |
| Continuing education | 3 hours code update/year |
| Local license | Varies by city |
| Board | NH Mechanical Licensing Board (OPLC) |
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 | U.S. Department of Labor Office of Apprenticeship (no state agency) |
Programs register through the Office of Apprenticeship; use the Partner Finder for local sponsors.
- Source: apprenticeship.gov · checked November 6, 2026
Mechanical code
| Code in force | 2024 IMC with state amendments |
RSA 155-A:1 IV state building code, with amendments approved as of Oct 10, 2025 and ratified by the legislature.
- Source: gencourt.state.nh.us · checked November 5, 2026