Furnace repair.
A furnace that fails in a Minnesota winter is an emergency, so we offer same-day diagnostics and repair for all makes and models. Common parts are stocked on every truck.
A broken furnace in a Minnesota winter is an emergency.
North Star technicians are dispatched same-day on most calls, and each truck is stocked with common replacement parts. We service all major brands, Carrier, Lennox, Trane, Bryant, Rheem, Goodman, and more. The $89 diagnostic fee is waived when you proceed with repair.
- Ignitor and flame sensor replacement
- Heat exchanger inspection and repair
- Blower motor repair and replacement
- Gas valve replacement
- Inducer motor repair
- Circuit board and control diagnosis
- Pressure switch and venting issues
- Thermostat wiring and replacement
- Error code diagnostics for all brands
- Pilot light and ignition system service
Most repairs finish in one visit.
Our trucks carry ignitors, flame sensors, inducer motors, pressure switches, capacitors, thermostats, and gas valves for the major brands. If the fix is one of the common failures, which it usually is, you're not waiting on a return visit for a part to ship.
When a part is less common, we tell you up front what it costs, where it's coming from, and how long it will take. No vague "we'll be back next week."
Five steps from your call to a warranty-backed repair.
Call or book online
Same-day or next-day appointment on most calls. 30-minute heads-up call when the tech is en route so you know when to expect them.
Diagnostic visit
Full system diagnostic by a NATE-certified technician. Flat $89 fee, waived if you proceed with repair.
Upfront repair estimate
Cost presented before anything is touched. You approve, in writing, before any work begins.
Repair and full system test
Parts installed. A complete heat cycle is run before we leave, with supply temperatures and burner flame verified.
1-year parts and labor warranty
Same fault recurs within a year, we come back at no charge. Printed on every invoice.
Furnace repair at a glance.
Signs your furnace needs repair.
If you see any of these, it's time to call. Several of them, like a yellow burner flame or a CO detector going off, aren't repairs that can wait.
No heat or noticeably weak airflow from vents.
Furnace cycles on and off frequently (short cycling).
Yellow or flickering burner flame, should be blue.
Unusual sounds: banging, rattling, squealing, or booming.
Sudden spike in gas or electric bill.
Carbon monoxide detector going off, call 911 first, then us.
Thermostat set high but house won't reach temperature.
Furnace runs constantly without reaching setpoint.
Furnace repair FAQ.
The questions we get most when the heat goes out.
My furnace stopped working. What should I check first?
Confirm the thermostat is set to heat and has fresh batteries, check that the furnace switch and breaker are on, and replace a clogged filter. If it still will not start, call us rather than resetting it repeatedly.
Why is my furnace flame yellow?
A healthy burner flame is blue. A yellow or flickering flame can signal incomplete combustion, which can produce carbon monoxide. Turn the furnace off and call us the same day, and leave the house if a CO detector sounds.
How much does a furnace repair cost?
The diagnostic is a flat $89, waived if you proceed with the repair. You approve a written estimate before any work begins.
Can you repair it the same day?
Usually. Our trucks carry common ignitors, flame sensors, inducer motors, pressure switches, capacitors, thermostats and gas valves, so most repairs finish in one visit.
Is it worth repairing an older furnace?
If the furnace is under about 15 years old and the failure is a single component, repair is usually the right call. If the heat exchanger is cracked or repairs are stacking up, we will lay out replacement options.
What does the warranty cover?
Parts and labor for 1 year. If the same fault recurs within 12 months, we come back at no charge. It is printed on every invoice.
No heat right now?
Call us directly. The emergency line is answered 24/7 by a dispatcher, not a voicemail. Standard rates apply during business hours; after-hours rates are quoted before the tech is dispatched.