How much does furnace repair cost?
Short answer: The national average furnace repair costs $318, and most homeowners pay between $133 and $505 (Angi, 2026). HomeGuide puts typical repairs at $125 to $480. Small parts like flame sensors and igniters sit at the low end. Blower motors, inducer motors, and heat exchangers are the expensive ones.
Common repairs and typical prices
| Repair | Angi 2026 | HomeGuide |
|---|---|---|
| Flame sensor | $150 to $250 | about $80 (cleaning) to $250 |
| Igniter | $150 to $500 | $100 to $250 |
| Thermostat | $100 to $600 | about $150 |
| Control board | $200 to $600 | $300 to $650 |
| Gas valve | $200 to $600 | $200 to $800 |
| Draft inducer motor | $200 to $1,500 | $400 to $1,100 |
| Blower motor | $150 to $2,000 | $300 to $900 (replace) |
| Heat exchanger | $100 to $1,500 | $1,000 to $3,000 (replace) |
The two sources disagree most on heat exchangers. HomeGuide's figure is for a full replacement, so plan with that one.
Service call and diagnostic fees
HomeGuide lists furnace diagnostic fees around $90 to $100 and HVAC minimum service-call fees of $75 to $200, usually credited toward the first hour. Nights, weekends, and holidays cost more.
Cheap checks before you pay for a visit
- Replace a dirty filter. A clogged filter can make the furnace overheat and shut itself off.
- Check the thermostat batteries and that it's set to HEAT.
- Make sure the furnace power switch (it looks like a light switch on or near the furnace) is on, and the breaker hasn't tripped.
- On a high-efficiency furnace, look for snow or ice blocking the white PVC pipes outside.
Step-by-step: Furnace not turning on · Furnace blowing cold air
Tried the cheap checks and it still won't heat? Request furnace help. One local heating company that serves your ZIP will contact you about the repair.
When repair stops making sense
A cracked heat exchanger on an older furnace is usually a replacement decision, because the repair costs a large share of a new unit. Same if the furnace is near 15 to 20 years old and needs a major part. See Repair or replace?
Replacing in Utah? Factor in the Utah ThermWise rebates for a high-efficiency furnace.
FAQ
Is a furnace tune-up worth it? Angi suggests budgeting $150 to $200 a year. It catches dirty flame sensors and weak igniters before they fail on the coldest night.
Will my warranty cover the part? Many furnaces carry a parts warranty for years after install, but labor usually isn't covered after the first year or two. Have the model and serial number ready when you call.
Related: Furnace replacement cost · Repair or replace?
Sources: Angi furnace repair cost, 2026 · HomeGuide HVAC repair cost
Live in Salt Lake or Utah County?
Tell us your ZIP code and phone number, and Full Docket or a local heating company it works with will contact you about your request. Free for homeowners.