Furnace Repair in Simi Valley, CA

Common Furnace Problems We Fix

• Ignitor failure — the most common reason a furnace won’t start; the ignitor glows red but the burner doesn’t light, or nothing happens at all
• Flame sensor malfunction — a dirty sensor shuts the burner off as a safety measure; the furnace lights briefly then cuts out
• Blower motor failure — the burner fires but no air comes through the vents
• Cracked heat exchanger — a serious safety concern; allows combustion gases to mix with circulated air and requires immediate shutdown
• Control board failure — affects startup sequence, ignition timing, and fan operation
• Gas valve issues — burner won’t stay lit or fails to light at all
• Clogged filter causing safety shutoff — restricted airflow causes the system to overheat and trip the limit switch

What Furnace Repair Costs in Simi Valley

• Ignitor replacement: $150–$350
• Flame sensor cleaning or replacement: $100–$250
• Blower motor replacement: $300–$650
• Control board replacement: $400–$900
• Gas valve replacement: $300–$600

Every cost is confirmed in writing before work starts. You can also check typical pricing ahead of the call at our furnace repair cost estimate page.

Repair or Replace?

If your furnace is under 15 years old and the repair cost is less than half the price of a new system, repair is almost always the better financial call. If it’s older, needs frequent repairs, or the heat exchanger is cracked, replacement usually makes more sense over time. A technician gives you a straight side-by-side comparison so you can decide.

When to Call Immediately

• No heat at all or heat that cuts out shortly after startup
• Yellow or orange burner flame — should be blue
• Carbon monoxide detector has triggered — shut the system off and call immediately
• Burning smell from vents
• Loud banging or scraping sounds on startup

To stay ahead of breakdowns, schedule your annual checkup at our furnace maintenance cost estimate page before heating season fills up.