Furnace Repair Cost (2026)
Furnace repair costs for gas, electric, and oil heating systems.
Cost Summary
How Much Does Furnace Repair Cost?
Furnace repair addresses issues with your heating system, from ignition problems and blower motor failures to heat exchanger cracks and thermocouple replacements. Gas furnace repairs should always be handled by licensed professionals due to carbon monoxide risks.
Factors That Affect Furnace Repair Cost
Type of repair (ignitor $150-$300, blower motor $400-$900)
Gas vs electric vs oil furnace
Emergency vs scheduled service
Parts availability for older models
Warranty coverage
Diagnostic fee ($75-$150)
After-hours service premiums
Heat exchanger condition
What Is Included
When You Need Furnace Repair
- No heat or insufficient heat output
- Furnace not turning on
- Strange noises (banging, popping, squealing)
- Pilot light won't stay lit
- Yellow or flickering burner flame
- Unusual smells (rotten eggs = gas leak, call 911)
- Frequent cycling on and off
- Carbon monoxide detector alarm
Pro Tips for Saving Money
- $Yellow burner flame indicates incomplete combustion - call a tech immediately
- $Never attempt gas furnace repairs yourself - CO poisoning risk
- $A cracked heat exchanger is a safety hazard requiring immediate replacement
- $Annual tune-ups prevent 75% of common furnace repairs
- $Keep the area around your furnace clear of combustibles
- $Install CO detectors on every floor of your home
Frequently Asked Questions
What are common furnace repairs?
Most common: ignitor replacement ($150-$300), blower motor ($400-$900), flame sensor ($100-$250), thermocouple ($100-$250), draft inducer motor ($300-$700), and control board ($200-$600).
Is a cracked heat exchanger dangerous?
Yes, extremely. A cracked heat exchanger can leak carbon monoxide into your home. If diagnosed, either replace the heat exchanger ($1,000-$3,000) or replace the entire furnace, especially if the system is older.
Why is my furnace blowing cold air?
Common causes: thermostat set to "fan only," dirty air filter restricting airflow, pilot light out, faulty ignitor, or malfunctioning gas valve. Check thermostat settings and filter first.
How often should a furnace be serviced?
Annual maintenance before heating season (fall) is recommended. This includes cleaning, inspection, safety checks, and filter replacement. Annual maintenance extends furnace life and prevents breakdowns.
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