Colorado
HVAC in Colorado
48 HVAC companies in its metro areas within about 25 to 35 miles of Denver and Colorado Springs – plus how Colorado licenses HVAC work.
Metro areas
Colorado cities we cover
Colorado rules
Do HVAC contractors need a license in Colorado?
How Colorado licenses HVAC work
There is no statewide HVAC contractor license that we could find; cities or counties license HVAC work.
Local rules: The state Division of Professions and Occupations lists plumbing and electrical programs but no HVAC or mechanical contractor program, so HVAC licensing is by city or county; Denver, for example, issues Heating and Ventilating Class A, Class B (residential only) and Heating, Ventilating, A/C (residential only) supervisor certificates, and we could not confirm a Denver contractor lookup page or the rules of other Colorado cities.
Ask the contractor for the license or supervisor certificate issued by your city or county building department and confirm it with that department, and check that a permit is pulled.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
We could not confirm every detail from Colorado’s own sources, so treat this as a starting point and check with the agency.
Sources: dpo.colorado.gov, dpo.colorado.gov, denvergov.org, denvergov.org. Checked October 2026 from official sources. This is not legal advice.
Before you hire
Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – a new furnace, heat pump or air conditioner usually does.
Questions
Colorado HVAC questions
Do HVAC contractors need a license in Colorado?
In Colorado, HVAC work is licensed by cities or counties rather than the state. Ask your city or county building department how to check a license.
Where in Colorado do you list HVAC companies?
In Colorado: Denver (28), Colorado Springs (20). Each city page lists companies based within about 25 miles – 35 in smaller metro areas – whose own website names that city or nearby towns.
Do technicians need EPA certification?
Yes, in every state: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification. A state or city license is a separate requirement.
How do I get an HVAC company listed in Colorado?
HVAC companies can add their business free. We check every listing against the business’s own website.
Neighboring states: Wyoming · Nebraska · Kansas · Oklahoma · New Mexico · Arizona · Utah.
Request an HVAC company
Ask us to find an HVAC company in Colorado
Tell us the job and your ZIP code. We pass it to listed companies that serve your area.
No heat in freezing weather, or no cooling in dangerous heat? Call a company from the list that says it takes emergency calls – a form is not fast enough. If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside.