Furnace Repair in Vacaville, CA

$89 Diagnostic

$19.95 for MVP members
10% off repairs for military and seniors

Cold nights are when a furnace or heat pump usually gives out, and nobody wants to wait days for heat. We repair gas furnaces, electric furnaces and heat pumps all over Vacaville, with same-day service 7 days a week. To get warm again, call (707) 678-1784 or use online booking.

$89 diagnostic, $19.95 for MVP members.

Our furnace repair work in Vacaville

Keeping Vacaville warm since 1991.
There is a good chance we have been to your neighbor’s house.

See more reviews, handwritten and signed by real customers:
Read Their Handwritten Reviews

"Kyle was so helpful when he showed up I had forgotten my appointment. We had a family emergency and a house full of people and babies Kyle asked if he could be of any help even helped me with my dog told me no problem to reschedule. All the team at Greiner in Dixon are the best I've been using them for years. Suzanne in Vacaville" - Suzanne, Google review

More Reviews

Where we find your furnace

It depends on when your house was built. In the older single-story homes downtown, it is usually in a closet. In homes from the 70s and 80s, it is usually in the garage, and in newer homes it is up in the attic.

Common heating problems we repair

The winter repairs we make most: burnt-out igniters and bad pressure switches.

No heat, or not enough heat
A system that cycles on and off
Burnt-out igniters and other ignition problems
Bad pressure switches
Strange noises or vibration
Thermostat and control problems
Heat pumps that will not heat

Need heating repair somewhere else in Solano and Yolo County? See our furnace repair page.

We cool homes and fix water heaters here as well. See the full list of what we do in Vacaville.

Why Vacaville homeowners call Greiner

Family-owned and serving Solano and Yolo County since 1991
Same-day service, 7 days a week
We answer the phone with “How can we make you smile?”
Friendly, well-groomed, polite technicians. Our reviews say so.
Rated 5.0 on Google with more than 1,600 reviews (September 2026)
California contractor license CSLB #365955

Vacaville questions we hear

My furnace is blowing cold air. What should I check?

Make sure the thermostat is set to Heat and above the room temperature, and check the furnace filter and the furnace power switch. If you smell gas, leave the house and call PG&E or 911 from outside.

Do you repair heat pumps too?

Yes. We repair heat pumps as well as gas and electric furnaces.

Can you come out today?

We try. Service runs 7 days a week with same-day openings, so calling early in the day gives us the best chance to fit you in.