Requirements, license levels, and the issuing authority, sourced from Colorado's official board.
The Colorado row in national HVAC licensing tables is frequently wrong in both directions. There is no state license, but Denver's requirements are real and substantial, and the state electrical and plumbing licenses genuinely bite on parts of ordinary HVAC work.
| Requirements | COLORADO ISSUES NO STATE HVAC LICENCE. The Division of Professions and Occupations licenses the ELECTRICAL and PLUMBING trades at state level, and HVAC does not appear among them, there is no state mechanical board and no state examination. Mechanical licensing is set by the municipality or county. WHAT ACTUALLY APPLIES. Denver, Colorado Springs and other larger jurisdictions run their own mechanical contractor licensing with their own examinations, and permitted work must be pulled by a licensed contractor there. Smaller jurisdictions may require only inspection against the adopted code. FEDERAL LAYER, which applies statewide: EPA SECTION 608 TECHNICIAN CERTIFICATION is required to purchase or handle regulated refrigerants, Type I, II, III or Universal, and it does not expire. THE CROSS-TRADE TRAP. Colorado DOES license plumbing and electrical work at state level, and both are enforced. Wiring a rooftop unit is electrical work; piping a boiler feed or condensate into drainage can be plumbing work. An HVAC technician can need a state license for part of a job even though no state HVAC license exists for the job as a whole. |
| Reciprocity | Not applicable at state level, since no state HVAC license exists. Municipal licenses are recognised at each municipality's discretion. EPA Section 608 certification is federal and transfers without re-qualifying. |
| Renewal | No state HVAC license to renew. Municipal licenses renew on the municipality's cycle. EPA Section 608 does not expire. Where a technician also holds a Colorado electrical license, that carries 24 hours of continuing education per three-year period. |
| Notes | The Colorado row in national HVAC licensing tables is frequently wrong in both directions. There is no state license, but Denver's requirements are real and substantial, and the state electrical and plumbing licenses genuinely bite on parts of ordinary HVAC work. |
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Sources: dpo.colorado.gov, dpo.colorado.gov, dpo.colorado.gov, dpo.colorado.gov. Always confirm current requirements with the issuing authority.
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