HVAC Repair Denver: $163 to $1,328 + Quick Permits (2026)

Denver rows are local figures; national rows are labeled. The two Denver heat pump ranges come from different publishers and are shown as published.

Do this now: no heat in Denver

Act on a dead furnace the same day, safety first: Denver averages 156 nights a year at or below freezing, NOAA's 1991 to 2020 normals show.

1. Smell gas? Get everyone out without flipping switches, then call 911 and Xcel Energy at 800-895-2999 from outside. That is what Xcel told Denver customers during a 2024 odor scare (CBS Colorado).
2. Carbon monoxide alarm? Get outside, call 911, and do not go back in until responders say it is safe (CPSC).
3. Check the thermostat. Set to Heat, above the current room temperature, fan on Auto (Carrier).
4. Check the filter and the switch. Bryant says a dirty filter can make the furnace shut its burners off. Check the furnace power switch and breaker, and if a breaker trips again, stop resetting it.
5. Keep warm safely. Close off rooms you do not need and add layers. The CDC says using the stove for heat is not safe; never run a generator or grill indoors.
6. Call the heating and AC line and say what the thermostat reads.

Is it an emergency? Signs to call a Denver HVAC company today

A furnace that will not run is an emergency in Denver whenever a freeze is coming: the January normal low at the airport is 18.7 F.

• Gas smell, soot around the furnace or a CO alarm. 911 first. Carrier says to turn the system off and call a professional if you see soot.
• Someone in the house is too cold. The CDC says a body temperature below 95 F needs medical help right away.
• No heat overnight below freezing. Pipes are at risk too; frozen pipes covers what to do.
• A breaker that trips again, or a furnace that keeps shutting off.
• Summer heat. Denver's July normal high is 89.9 F; once it is above 90 F inside, the CDC says a fan can raise body temperature.

Can it wait? A furnace that runs but short-cycles on a mild day can usually wait for business hours. HomeGuide puts furnace repair labor at $75 to $150 an hour, against $140 to $210 for emergency calls.

Denver's heating season is long

Denver is a heating city first. NOAA's 1991 to 2020 normals for Denver International Airport show 5,862 heating degree days a year against 850 cooling degree days, a January low of 18.7 F, and 156 nights a year at or below freezing. That is the reverse of the hot cities we cover. A furnace that fails in January is an emergency HVAC repair, and the usual first fixes, ignitors and flame sensors, cost $250 to $450 in Denver, ConsumerAffairs says.

Summers still matter: the July high is 89.9 F and the airport averages 1.9 days a year at 100 F. For the furnace itself, the furnace repair cost guide lists national part prices.

Denver licenses its own HVAC contractors

Colorado does not issue a state HVAC contractor license, so Denver does. The city's Contractor Licensing office says Denver "does not accept or reciprocate contractor licenses and/or certificates from other counties or states." A Colorado electrical or plumbing license can substitute for a supervisor certificate; the page names no mechanical equivalent. Ask for the Denver license number, and call Contractor Licensing at 720-865-2770 to confirm it.

Homeowners can permit their own mechanical work only after passing an exam, Denver's homeowner permit page says, and must do the work themselves unless they act as general contractor with Denver-licensed subcontractors.

Local rules, contacts and climate for Denver, from official city, state, utility and NOAA pages unless the source says otherwise.

Denver HVAC permits: what a quick permit covers

For single-family homes and duplexes, Denver's Quick Permits list includes residential AC, forced air heating systems, evaporative cooling units, hot water or steam boilers, and baseboard and radiant heating. The city says replacement equipment must "meet current energy code efficiency standards," checked at inspection. The page does not name heat pumps, so ask the contractor how a heat pump swap will be permitted.

Heat pump rebates in Denver in 2026

Several incentives can stack, and most are taken off the contractor's invoice:

• Colorado Heat Pump Tax Credit: $1,000 for an air-source heat pump in 2026, with at least $333 passed to you as a discount on the invoice, the Colorado Energy Office says.
• Denver Climate Action rebates: Denver7 reported in January 2025 that residential rebates go to approved contractors, who pass them on through the invoice, and that the city focuses on homes where the furnace has failed. Nearly 2,000 rebates had been paid since 2023.
• Power Ahead Colorado: $1,500 off ENERGY STAR cold-climate heat pumps installed by a verified contractor in existing Denver-area homes, launched July 15, 2026, Colorado Public Radio reported.
• Xcel Energy: CPR reported in July 2026 that Xcel's program typically provides $6,000 to $10,000 per installation and expires in 2026 unless extended.
• Closed: Colorado's HEAR single-family rebates, and the federal 25C credit for anything installed after December 31, 2025.

ENERGY STAR says cold-climate heat pumps keep working below 5 F. Heat pump installation cost has national prices by size.

Questions for a Denver HVAC company

1. What is your Denver contractor license number?
2. Will this go under a quick permit, and who schedules the inspection?
3. Which rebates will you take off the invoice: state credit, city, Power Ahead or Xcel?
4. Is the heat pump rated cold-climate, and what backup heat does it keep?
5. What is the diagnostic fee? ConsumerAffairs lists $120 to $150 in Denver.

Colorado complaints go to the Attorney General at StopFraudColorado.gov or 800-222-4444, and the Denver DA's Fraud Hotline is 720-913-9179. Calls to the heating and AC line go to an independent company that serves your area and takes this kind of job (how calls work).

More Denver repair guides

Circuits and panels for a heat pump: electrical repair in Denver. Frozen pipes and leaks: plumber in Denver. Solar: Denver solar service. Compare AC repair in Las Vegas and AC repair in Phoenix. Start at HVAC repair or home repair costs.