Repairs · Janesville, WI
HVAC Repair in Janesville
Compare licensed HVAC repair pros in Janesville, WI. Typical repair tickets run $641–$6,531.
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Common HVAC repairs in Janesville
- 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 →- J. C. Heating and Cooling, Inc.Top pick
What customers say “Amazing customer service and excellent quality of work. I was given a quote by another company to repair our furnace…”
- Rock Valley Services, Inc.Top rated
What customers say “Can't say enough about the excellent customer service this company provided me. Joshua was very polite and…”
- R&W Heating & Cooling IncTop rated
What customers say “We just bought an old home here in Janesville, and of course—right when we needed it—the AC stopped cooling. We reached…”
- Dohner Heating & Cooling LLCTop rated
What customers say “I can’t say enough good things about this heating and cooling company. From the start, the service was prompt,…”
What customers say “My A/C unit kept freezing up on the inside and would stop working. I called up Don Martin and scheduled a time for a…”
- Footville Heating & Cooling Inc.Top rated
What customers say “Our AC went out at the time most things go out....overnight, on a weekend, after business hours. I woke up and noticed…”
- AE Heating and Air Conditioning LLCTop rated
What customers say “Ethical, honest, fair priced. Have had AE do routine maint on already placed HVAC, as well as the install of a brand…”
- installationrepairemergency
What customers say “Very satisfied with the urgent service I needed this morning. I woke up to no heat, and between the woman answering…”
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 Janesville. 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 Janesville 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 Janesville?
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: Wisconsin Department of Safety and Professional Services (DSPS) — Dwelling Contractor certification (plus municipal HVAC licensing) · Company data: verified business records + Google Business profile
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