Furnace repair costs in 2026 range from $150 to $900 for most common issues, with the average homeowner spending around $400 for a typical repair.
Most Common Furnace Repairs
The most frequent furnace repairs include igniter replacement ($150–$350), blower motor replacement ($400–$900), and flame sensor cleaning or replacement ($100–$250). More complex repairs, such as heat exchanger replacement ($1,000–$2,500) or gas valve replacement ($300–$700), require more time and expertise and result in higher labor costs.
Emergency Furnace Repairs
Emergency furnace repairs during the winter heating season often cost significantly more than scheduled repairs. When your furnace breaks down on the coldest night of the year, you may need to pay an emergency service fee of $100–$300 on top of the standard repair cost. To avoid emergency situations, schedule annual furnace maintenance before the heating season begins.
Repair or Replace?
If your furnace is more than 15 years old and requires a major repair costing more than $1,000, replacement may be the smarter financial decision. Modern high-efficiency furnaces achieve AFUE ratings of 95% or higher, compared to 60–80% for older units. The energy savings from a new high-efficiency furnace can total $6,000–$10,000 over its lifespan, far exceeding the initial replacement cost.
Warning Signs Your Furnace Needs Repair
Key warning signs include unusual noises (banging, squealing, or rattling), a yellow or flickering pilot light (should be blue), frequent cycling on and off, uneven heating throughout your home, and a sudden increase in heating bills. Address minor issues early to prevent them from escalating into major, expensive repairs.