Repairs · Knoxville, TN
HVAC Repair in Knoxville
Compare licensed HVAC repair pros in Knoxville, TN. Typical repair tickets run $632–$6,435.
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Common HVAC repairs in Knoxville
- 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 →- installationrepairemergency
What customers say “My ac hadn't been working and I had already had another company come out and I needed to kno exactly where the leak was…”
- Service Experts KnoxvilleTop ratedinstallationrepairemergency
What customers say “Mike promptly came out within 1.5 hours after first contact. Had booties on to keep everything clean. He immediately…”
- Chancey & Reynolds, Inc. | AC RepairTop rated
What customers say “Jake was my first contact with Chauncey and Reynolds. He was my second opinion and they far and away blew the…”
- Chaffee HVAC, Plumbing, & ElectricalTop ratedinstallationrepairinspectionemergency
What customers say “Couldn't be happier with the new HVAC system installed by the Chaffee team. Called on a Thursday after seeing water…”
- Advanced Heat AC & PlumbingTop ratedinstallationrepairemergency
What customers say “Jordan was kind, courteous, and knowledgeable. He explained what he was doing and why he was doing it. I was impressed…”
- John H Coleman CoTop ratedinstallationrepairinspectionemergency
What customers say “We just replaced an existing HVAC unit using John H. Coleman for the very first time. In brief, my wife and I had…”
- Rocky Top HVAC, LLCTop rated
What customers say “I cannot say enough about our experience using Rocky Top HVAC for a complete unit replacement. From the time I called…”
- AA-Air CompanyTop rated
What customers say “AA-Air installed a new unit for us. Chris came out and worked up the estimate for what we needed. He was very…”
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
Knoxville repair range$632 – $6,435per repair visit
Derived from local HVAC benchmarks in Knoxville. 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 Knoxville 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 Knoxville?
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: Tennessee Department of Commerce and Insurance — Board for Licensing Contractors (BOC) and Limited Licensed Mechanical Contractor Program · Company data: verified business records + Google Business profile
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