Repairs · Denver, CO
HVAC Repair in Denver
Compare licensed HVAC repair pros in Denver, CO. Typical repair tickets run $802–$8,168.
On this page
Common HVAC repairs in Denver
- Heat pump not cooling on humid summer days — low refrigerant, frozen coil, or failing capacitor.
- Furnace short-cycling in winter — dirty flame sensor, oversized equipment, or thermostat miscalibration.
- AC blowing warm air — condenser-fan failure, tripped high-pressure switch, or refrigerant leak.
- Uneven temperatures room-to-room — failing zone damper, duct leakage, or blower-motor issue.
- Loud banging, squealing, or grinding from the air handler — bearings, belt, or blower-wheel imbalance.
- Thermostat shows the right setpoint but the system won't start — control board, transformer, or wiring fault.
- Water pooling at the air handler — clogged condensate drain or cracked pan.
- Frozen evaporator coil that keeps icing over — airflow restriction or low charge.
Ranked shortlist
Request quotes →- installationrepairinspectionemergency
What customers say “My first impression of this company was excellent thanks to the representative on the phone. She answered on a…”
- installationrepairemergency
What customers say “Jason Dubose, the SWAN technician came out today to help, when I woke up this morning with no heat. He was amazing. He…”
- installationrepairinspectionemergency
What customers say “Richard, the HVAC mechanic, showed up to our property promptly and quickly diagnosed the issue with our furnace. He was…”
- installationrepairemergency
What customers say “We had to replace a AC Unit and Furnace in the last two years. We spoke with several contractors and ultimately choose…”
- installationrepairinspectionemergency
What customers say “I recently had one of my furnaces go out and had called Ultimate to come out and give me a bid. While at my home I…”
- Steel T | Denver HVACTop rated
What customers say “Beyond amazing. My technician, if I remember correctly named Nick, was the friendliest, most informative and caring…”
- L & L Heating & Air ConditioningTop ratedinstallationrepairemergency
What customers say “I’ve used L&L in the past to service our furnace, so when our 17-year-old Carrier furnace died and was not repairable,…”
- installationrepairemergency
What customers say “Highly recommend Sanders & Johnson! Over the years since we bought our home, we’ve tried many HVAC companies and…”
Repair vs replace: quick decision tree
- Age > 15 years — Expect diminishing returns on any single repair. Start pricing replacement in parallel, especially if a second failure in the last 24 months.
- Repair cost > 50% of replacement — A $2,500 repair on an $8,000 system rarely pencils. Run the 5-year math: repair cost + likely follow-on failures vs new-system financing.
- Uses obsolete refrigerant (R-22) — R-22 is phased out; refills are both expensive and short-lived. Replacement is almost always the right call.
- Failed a major component (compressor, heat exchanger) — These are “the system”. A compressor on a 12-year-old condenser is a replacement signal, not a repair.
Typical repair cost range
Derived from local HVAC benchmarks in Denver. Most repair tickets fall well below full-system pricing — expect simple swaps (capacitor, ignitor, thermostat) at the low end and major component replacements (blower motor, control board, compressor) at the high end.
Estimate your Denver repair
Pick the repair type and your system's age for a ballpark range. Real quotes vary by part availability and diagnosis — use this as a sanity check before approving work.
Frequently Asked Questions
How long does a typical HVAC repair take in Denver?
Most diagnoses take 30–60 minutes on site. Small repairs (capacitor swap, thermostat, ignitor) finish the same visit. Parts-on-order repairs can push the job 1–5 business days depending on supplier stock.
Do repairs come with a warranty?
Labor warranties of 30–90 days are common; parts usually carry the manufacturer's warranty (1–10 years). Always get the warranty terms in writing on the invoice before the tech leaves.
How do I avoid common repair scams?
Red flags: no written estimate before work starts, refrigerant refill with no leak search, blanket recommendation to replace without an inspection, or very high "after-hours" pricing on a non-emergency call. Two written quotes for any repair over $600 is the fastest sanity check.
When should I replace instead of repair?
When the repair estimate exceeds 50% of a new system, or the unit is past 15 years, or it uses obsolete refrigerant (R-22), replacement usually wins the 5-year math. Otherwise repair is almost always the better call.
Licensing verified weekly. Reviews refreshed within the last 30 days.
Licensing data: Colorado Department of Regulatory Agencies (DORA) — Division of Professions and Occupations (municipal HVAC licensing; statewide plumbing/electrical only) · Company data: verified business records + Google Business profile
See our editorial standardsReport inaccurate info about HVAC repair in Denver
Get Denver repair quotes
Two or three written quotes is the fastest way to normalize a repair bill — we'll connect you with top-ranked local pros.