No heat after an idle summer
Dust from the surrounding farmland settles in the burner area and on the flame sensor, and the ignitor ages unseen.
Furnace repair in Gilroy, CA
Gilroy's winters are cool, and the nights are cold enough that a failed furnace is a real problem. Golden Comfort AC & Heating Repair repairs furnaces and heat pumps in Gilroy, Morgan Hill and San Martin, with emergency service 24/7.
The price in plain numbers
Most Gilroy furnace repairs run about $270 to $600, and major repairs run $1,000 to $2,200. The diagnostic call is typically $89 to $139. See the furnace repair pricing guide.
Examples of our work
Safety first
Turn the furnace off and get help right away if you smell gas, a carbon monoxide alarm sounds, or you smell burning that does not fade. Leave the house and call 911 or PG&E from outside.
The CPSC carbon monoxide guide explains what to do.
Common furnace problems in Gilroy
Old ducts in older homes
Original ducts in historic and ranch homes leak and lose heat, so rooms stay cold while the furnace runs.
Short cycling
A dirty filter, blocked registers or a failing control board.
A blower that will not run
A failed capacitor or motor.
What happens on a visit
- You tell us what is happening.
- We check the basics and test the heating sequence.
- You get the options and the price before work begins.
- We repair and run it to confirm it works safely.
Repair or replace? And the Bay Area rule
If your furnace is 15 or more years old, or repairs are piling up, price a replacement. The Bay Area Air District's zero NOx standard for new gas furnaces starts January 1, 2029, and the district was to consider changes in 2026, so check the Air District.
A heat pump also cools, which suits Gilroy's hot summers. See AC installation in Gilroy.
A fall furnace checklist
- Run the heat for a few minutes on a cool day to catch problems early.
- Replace the filter, especially after a dusty summer.
- Test carbon monoxide detectors and replace the batteries.
- Look for rust, soot or water around the furnace, and call if you find any.
Repair prices in Gilroy
| Repair | Typical cost |
|---|---|
| Service call | $89 to $139 |
| Average common repair | $270 to $600 |
| Average major repair | $1,000 to $2,200 |
| Flame sensor cleaning | $120 to $220 |
| Ignitor replacement | $220 to $450 |
| Heat exchanger replacement | $1,200 to $2,400 |
Old homes and venting
In older Gilroy homes we also check venting, gas lines and connections, since parts of the system may be decades old. If we find a safety problem, we tell you plainly and explain what it takes to fix it.
Where we serve
We serve Gilroy, Morgan Hill, San Martin and Hollister. See AC repair in Gilroy and all of our locations.
Brands we service
We repair and install all major brands. Each brand page lists the models we install, the problems we see most and what the warranty typically covers. See how we match a technician to your brand.
Gilroy, CA on the map
Common questions
How much does furnace repair cost in Gilroy?
Most repairs run about $270 to $600. Major repairs run $1,000 to $2,200. The diagnostic call is typically $89 to $139.
Do you repair furnaces in Morgan Hill?
Yes. We serve Morgan Hill and San Martin along with Gilroy.
Do you offer emergency heating repair?
Yes, 24/7.
Talk to a person
Call any hour for emergency service, or reach us during business hours for a visit or a quote.