Heater & Furnace Repair in Clayton, CA
Furnace not heating in Clayton?
If your furnace blows cold air, won't ignite, short-cycles or smells like burning, Blue Star Heating & Air can fix it. We repair gas furnaces and heat pumps in Clayton, and we check for safety problems like cracked heat exchangers and carbon monoxide leaks while we're there.

- From our Antioch shop
- About 17 miles southwest
- ZIP code
- 94517
- Power
- PG&E
- Permits
- Contra Costa County Building Division
Serving Clayton
Clayton is about 17 miles southwest via SR-4 and Kirker Pass Road from our Antioch shop, and we serve all of it, including Dana Hills, Clayton Wood, Oakhurst and Cardinet Glen. Clayton gets a few freezing nights each winter, and with most homes now 40-plus years old, an aging furnace in Clayton Wood or Cardinet Glen is worth checking before the cold arrives. On every furnace repair in Clayton, we check the burners, flame sensor, venting and heat exchanger before we call the job done.
Main roads
- Clayton Rd
- Kirker Pass Rd (route from Antioch)
Around Clayton
- Foot of Mount Diablo; Oakhurst Country Club (developed 1990s on the former Keller Ranch)
Other services in Clayton
All servicesFor businesses
Questions before you call
Why is my furnace blowing cold air?
Common causes are a thermostat set to 'fan on', a dirty flame sensor, a failed igniter, a clogged filter tripping the high-limit switch, or a heat pump stuck in defrost. We test each one and fix the actual cause.
How much does furnace repair cost in Clayton?
Small fixes like a flame sensor or igniter cost far less than a blower motor or control board. We diagnose first and quote the repair before starting, and we'll tell you if replacement makes more sense.
What should I do if I smell gas near my furnace?
Leave the house, don't flip switches, and call PG&E (or your propane supplier) or 911 from outside. Once it's safe, call us to find and repair the cause.
