Repairs · Williston, ND
HVAC Repair in Williston
Compare licensed HVAC repair pros in Williston, ND. Typical repair tickets run $571–$5,816.
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Common HVAC repairs in Williston
- 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 →- Williston heating & coolingTop pick
What customers say “Called them fairly early this morning with furnace problems. Received a call back within an hour. The gentleman…”
- A Cooper Mechanical, Inc.Top ratedinstallationrepairemergency
What customers say “The heater in my basement failed and Cooper Mechanical was able to provide an estimate and replace the unit quickly.…”
- Mon-Dak heating & plumbingTop rated
What customers say “I was at the end of my rope, and the knot was slipping ! I stopped in and explained my situation to them. 100 degree…”
- Cornerstone Repair and FabricationTop rated
What customers say “Had them replace my AC pump, recharge the system, and do some welding on my tank. Everything’s been running great for…”
- Just Chillin’ RefrigerationTop rated
What customers say “These guys are amazing! They come do what you need and fix it! They are very professional, they dont mess around, they…”
What customers say “All of the employees were respectful and did great work. I would recommend Polar to everyone. They are old fashioned in…”
What customers say “Materials available right in town. Dont have to drive an hour out of town for scoria.”
What customers say “Old water heater was leaking and soaking the basement. Everyone in town was a week out to fix, including themselves. .…”
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
Williston repair range$571 – $5,816per repair visit
Derived from local HVAC benchmarks in Williston. 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 Williston 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 Williston?
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.
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Licensing data: North Dakota Secretary of State — Contractor Licensing (state contractor registration only; no dedicated statewide HVAC trade license) · Company data: verified business records + Google Business profile
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