55 Mountain View Ave, Santa Rosa CA 95407 | 24/7 Emergency Service
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Furnace Repair — Santa Rosa CA

No heat? Furnace not working? We diagnose and repair all brands — same day, 24/7 emergency available.

Fast Furnace Repair in Sonoma County

When your furnace stops working, Action Plumbing, Heating & Air responds fast. Our technicians arrive with fully stocked service trucks and diagnose the problem on the first visit. We service all makes and models of gas and electric furnaces and provide honest upfront pricing before any work begins.

Common Furnace Problems We Repair

Furnace Repair Costs in Santa Rosa

Diagnostic Service Call$75 – $125
Igniter Replacement$150 – $300
Flame Sensor Cleaning / Replace$100 – $200
Control Board Replacement$300 – $600
Blower Motor Replacement$300 – $550
Heat Exchanger Replacement$600 – $1,500+

Diagnostic fee credited toward repair. All pricing upfront. No surprises.

Need a new furnace? See our furnace installation page. Have a heating emergency? No-heat emergency service is available 24/7.

Frequently Asked Questions

Why is my furnace blowing cold air?
Common causes include a tripped high-limit switch (overheating), a faulty igniter or flame sensor, a bad gas valve, or a clogged filter starving the unit of airflow. We diagnose the specific cause on every call.
How much does furnace repair cost in Santa Rosa?
Furnace repairs typically run $150–$600. Simple fixes like igniter replacement or flame sensor cleaning run $150–$300. More complex repairs involving heat exchangers or control boards can reach $400–$800.
My furnace turns on and off rapidly — what’s wrong?
This is called “short cycling” and is usually caused by a dirty filter, overheating, or a faulty thermostat. It significantly reduces efficiency and stresses the system. Have it diagnosed promptly.
How do I know if my heat exchanger is cracked?
A cracked heat exchanger is serious — it can allow carbon monoxide to enter your home. Signs include a persistent yellow or flickering burner flame, soot around furnace registers, and a burning or strange smell. Call us immediately if you suspect this.
Should I repair or replace my furnace?
If your furnace is over 15 years old and the repair cost exceeds $800–$1,000, replacement often makes more sense economically, especially when you factor in efficiency improvements of newer units.

Furnace Not Working?

We answer 24/7 and dispatch same-day throughout Sonoma County.

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