Colorado HVAC License Requirements
No. Colorado 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 Colorado
Denver
City and countyMechanical supervisor certificate and mechanical contractor license
Denver Community Planning and Development
Denver issues contractor licenses and supervisor certificates; a supervisor certificate (held or employed) is the first step to a contractor license. No reciprocity with other counties or states. Renewal every 1-3 years.
- Source: denvergov.org · checked November 5, 2026
Aurora
CityCity contractor license (mechanical)
Aurora Building Division
A city contractor license is required to build, alter, repair or demolish any building or structure; ICC testing applies. Electricians and plumbers file their state licenses instead.
- Source: auroragov.org · 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 |
- Source: apprenticeship.gov · checked November 6, 2026