Gas furnace repair in Oakland
We diagnose and repair forced-air gas furnaces in Oakland homes, from 1920s basements to Hills homes with attic units. You get a written price before any work starts.
Furnace problems we fix
Most no-heat calls trace back to airflow, ignition or a safety switch. We test each one and show you what failed.
- Blowing cold air
A clogged filter, dirty flame sensor or failed igniter.
- Short cycling
Overheating from poor airflow, a bad limit switch or an oversized furnace.
- Burners light, then shut off
Usually a dirty flame sensor or a venting problem.
- Nothing happens at all
Thermostat, power, door switch or control board.
- Loud bangs or squeals
Delayed ignition, a worn inducer or blower motor.
- Carbon monoxide alarm
Leave the house, call 911 or PG&E, and do not run the furnace until it is inspected.
What a furnace repair visit includes
We check the thermostat, filter, ignition, flame sensor, safety switches, venting and blower, then tell you what failed and why.
You get a written price for the repair before we start. If the furnace is near the end of its life, we tell you that too, and we price the repair and the replacement side by side so you can choose.
Replacing a furnace in Oakland needs a permit. See what an Oakland furnace permit involves.
Gas furnace repair: common questions
Straight answers for Oakland homeowners. Updated .
Book a repairWhy is my furnace blowing cold air?
The most common causes are a clogged filter that makes the furnace overheat and shut the burners off, a dirty flame sensor, or a failed igniter. Check that the thermostat is on Heat with the fan on Auto, then replace the filter. If it still blows cold, book a repair.
Why does my furnace turn on and off every few minutes?
That is short cycling. It usually comes from restricted airflow, a failing limit switch, a dirty flame sensor or a furnace that is too large for the house.
How often should a furnace filter be changed?
Check it monthly during heating season. Most 1-inch filters need changing every 1 to 3 months.
Can I still replace my gas furnace with a new gas furnace?
Yes, until January 1, 2029. From that date, Bay Area Air District rules allow only zero-NOx furnaces, such as heat pumps, to be sold or installed.
Do you give a price before the work starts?
Yes. You get a written price after the diagnosis and before any repair starts.
Book a heating repair
Call, or send the form and we call or text you back.
- 1 Call or send the form
Your name, phone number and email.
- 2 We set a time
We call or text you back to book the visit.
- 3 Diagnosis and written price
Nothing is done until you approve the price.