Top 7 HVAC companies in Denver, Colorado

Denver sits in a heating-dominant climate with 5,900 heating degree days and winter design temperatures near 3 °F. Equipment must handle large daily temperature swings and altitude effects. The seven firms below are ranked from public listing data using a Bayesian-adjusted rating that pulls each company’s raw score toward the national mean of 4.764. The adjustment accounts for review volume so that a perfect score from a handful of reviews does not automatically rank above a slightly lower score backed by dozens of reviews.

Cost of HVAC work in Denver

Installed costs for a full system in Denver appear in two published sources. One reports a typical price of $10,350 with a range of $9,300 to $11,400. The second reports an average invoice of $17,151 and an upper-quartile figure of $25,373. Labor is listed at $120 per hour. Permit fees range from $150 to $500. The two cost sources disagree on central tendency, which itself supplies useful information for budgeting. Both figures sit at the national average tier. These numbers cover equipment and labor but exclude any utility or state incentives that may reduce net outlay.

The shortlist

This shortlist is built from public listing data, not a review of work performed. Companies are ranked by Bayesian-adjusted rating. A company’s star rating is pulled toward the national mean of 4.764 until it has enough reviews to stand on its own. Small tie-breakers apply for a public website, HVAC-specialist listing, and published 24/7 availability.

All In One Home Services, LLC

All In One Home Services, LLC holds 40 reviews at a raw 5.0 that the ranking model adjusts downward to 4.959. The firm operates from 1441 W 46th Ave unit 15, Denver, CO 80211 as a general contractor and lists 24/7 availability plus a public website. Its phone number is (720) 505-7046. The adjustment moved the score 0.041 below the raw rating because the review count is still modest relative to the national mean. These numbers cannot reveal whether the firm maintains the same response standards on complex commercial jobs.

Steven & Sons Heating and Cooling

Steven & Sons Heating and Cooling records 37 reviews at a raw 4.9 adjusted to 4.879. It lists from 4500 Lincoln St, Denver, CO 80216, carries a public website, and answers calls at (970) 405-6220. The modest downward pull of 0.021 reflects the still-limited review depth. The listing shows general-contractor status only, so the numbers give no information on how often the firm turns away work outside standard residential change-outs.

Denver Heating & Air Conditioning Services

Denver Heating & Air Conditioning Services shows 17 reviews at a raw 5.0 adjusted to 4.869. The address is 2083 W 32nd Ave, Denver, CO 80211. It publishes 24/7 availability and can be reached at (720) 952-3140. The 0.131-point reduction from raw score occurs because fewer than two dozen reviews provide limited statistical weight. The data do not indicate how the firm schedules multi-day installations.

Comfort Masters HVAC Service

Comfort Masters HVAC Service lists 72 reviews at a raw 4.8 adjusted to 4.849. Its address is 1505 N Ogden St, Denver, CO 80218. It maintains a website and 24/7 availability; the contact number is (720) 704-1180. The adjustment of 0.049 upward from the mean reflects the larger review volume pulling the score closer to its raw value. The listing supplies no detail on parts-stock depth for older equipment.

Denver Heating & Cooling

Denver Heating & Cooling carries 13 reviews at a raw 5.0 adjusted to 4.835. It operates from 119 S Tejon St, Denver, CO 80223 and answers (719) 618-7333. Without a published website or 24/7 listing, the score sits 0.071 above the national mean. The small review count means these figures cannot speak to consistency across different equipment brands.

Denver Furnace & AC

Denver Furnace & AC shows a single review at a raw 5.0 adjusted to 4.832. The address is 4100 W 38th Ave, Denver, CO 80212. It lists a website and 24/7 availability; the phone number is (983) 277-2112. The large 0.068-point downward adjustment from raw stems directly from the minimal review volume. The data offer no insight into whether the firm stocks high-altitude-rated components.

Champion HVAC Service

Champion HVAC Service records 69 reviews at a raw 4.7 adjusted to 4.779. It is located at 1630 Chestnut Pl, Denver, CO 80202 and can be reached at (720) 330-8870. A website and 24/7 availability are noted. The 0.015-point lift above the national mean occurs because the review count is large enough to limit shrinkage. The figures cannot show how often the firm declines service calls outside its primary coverage radius.

Licensing and permits in Denver

Colorado maintains no statewide HVAC contractor licensing board. All licensing and permitting authority rests with local jurisdictions, principally the City and County of Denver’s Community Planning and Development department. That office issues Mechanical Contractor licenses and Mechanical Supervisor Certificates. No statewide insurance minimum applies because the state does not license HVAC contractors; insurance requirements are set by each city or county. Permits for furnace or air-conditioner replacement are required and issued locally, with fees ranging from $150 to $500. Homeowners can verify a contractor’s standing directly through the Denver lookup portal rather than relying on any state registry.

Climate demands on equipment

Denver lies in IECC zone 5B with a dry moisture regime. The area records roughly 5,900 heating degree days against only 800 cooling degree days, producing a heating-leaning mixed load profile. Winter design temperature is 3 °F and summer design reaches 92 °F. Very low humidity year-round makes evaporative cooling viable, yet large diurnal swings and 5,280-foot altitude require careful equipment derating. Natural gas remains the dominant heating fuel. Heat pumps are suitable when paired with backup heat, either dual-fuel or cold-climate models. Central air-conditioning saturation stays moderate. Peak service demand occurs in winter. Proper sizing must account for both the heating load and the altitude correction factor on combustion equipment.

Available incentives in 2026

Colorado’s Home Energy Rebates program remains active on a limited basis, offering up to $8,000 for qualifying heat pumps. A state tax credit of $1,000 for air-source or $2,000 for ground-source heat pumps, plus $250 for heat-pump water heaters, is available only when the contractor is registered with the Colorado Energy Office and passes through at least 33 percent of the credit as an immediate discount. Utility rebates from Xcel Energy and others range from $700 to $2,500. Because the tax credit requires a registered contractor, homeowners must confirm registration before signing any agreement. Federal 25C and 25D credits expired at the end of 2025; only commercial 48E incentives remain. Altitude derating on any gas furnace should also be verified.

How to choose an installer

Verify the contractor holds a current Denver Mechanical Contractor license through Community Planning and Development. Confirm registration with the Colorado Energy Office if pursuing state heat-pump incentives. Compare the Bayesian-adjusted scores rather than raw stars, and note whether the firm publishes 24/7 availability. Request written confirmation that equipment will be sized with altitude correction. Obtain permit cost estimates in advance, since fees are set locally and vary by scope.