What is the average cost to fix a furnace?

The average cost to fix a furnace cannot be set as a single number and is confirmed after an on-site diagnosis. The most common costs come from small control or electrical issues that stop the burner or blower from running. For many homeowners, a targeted repair restores heat the same day, while aging systems with repeated failures may point toward replacement instead. Our technicians handle these repairs across the Brookline area with upfront pricing presented before work starts.

Price is mainly driven by:

• The failed part and severity (for example, ignitor, flame sensor, motor, control board)
• System age and fuel type, plus maintenance history
• Part availability during peak season and how easy the furnace is to access
• Existing warranties or coverage that offset parts or labor

Schedule a diagnostic visit before heating season so small faults do not turn into a no-heat emergency.

Updated: 2026-07-06

Need help in Brookline, MA? Call (508) 501-9990 or book online.