Wisconsin HVAC License Requirements
Yes. Wisconsin licenses HVAC technicians through the Wisconsin DSPS. It issues journeyman, master and contractor credentials. Anyone who handles refrigerant also needs federal EPA 608 certification.
State HVAC license · By BrazeJobs Team · Updated
License tiers
| Journeyman | Refrigeration Technician certification (EPA 608, no state exam) |
| Master | HVAC Qualifier |
| Contractor | HVAC Contractor; Refrigeration Contractor registration |
Requirements
| Journeyman experience | HVAC Qualifier: 4 years school/apprenticeship/experience |
| Exam | DSPS exam (HVAC Qualifier) |
| Renewal | 2 years |
| Local license | No (state license covers) |
| Board | Wisconsin DSPS |
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 | Pearson VUE (for DSPS) |
| Format | Open book |
DSPS trades exams delivered by Pearson VUE; exams are open book.
- Source: dsps.wi.gov · checked November 6, 2026
Licensed in another state or the military
| Military spouses | Reciprocal credential for service members, former service members (within 4 years of discharge) and spouses licensed elsewhere (Wis. Stat. 440.09) |
Veterans Fee Waiver Program: one initial license fee waiver per qualified Wisconsin-resident veteran (Wis. Stat. 45.44).
Apprenticeship
| Registering agency | State Apprenticeship Agency (Wisconsin DWD) |
- Source: apprenticeship.gov · checked November 6, 2026
- Source: dwd.wisconsin.gov · checked November 6, 2026
Mechanical code
| Code in force | 2021 IMC with state amendments (commercial) |
Commercial Building Code (SPS 361-366) uses the 2021 IMC; one- and two-family dwellings follow the Uniform Dwelling Code.
- Source: dsps.wi.gov · checked November 5, 2026