No heat
Thermostat, power, gas supply, ignition and control-board testing to find why the furnace will not fire.
FURNACE REPAIR · SUNNYVALEFurnace Repair
Furnace Repair
in Sunnyvale, CA.
No heat, short cycling or a furnace that locks out? HAXX repairs gas furnaces across Sunnyvale and tells you plainly when replacement makes more sense.
Serving Cherry Chase, Ortega Park, Lakewood Village, Ponderosa Park, Fairbrae and the Heritage District and the rest of Sunnyvale. Share your address to confirm availability.
4.8 rating · 515+ reviewsHVAC & electrical, one teamPermits handledCA Lic #1081990
Furnace problems
we fix.
Gas furnaces in attics, closets, garages and crawl spaces. Every repair visit includes basic safety checks on the burners and venting.
Igniter and flame sensor faults
Furnaces that click, light and shut off are often a dirty flame sensor or a failing hot-surface igniter.
Blower runs but air is cold
Limit switches, pressure switches and inducer motors checked in order.
Short cycling
Overheating from restricted airflow, a dirty filter or an oversized furnace.
Noises and smells
Banging, squealing or a burning smell checked before the next cold night.
Safety checks
Venting, heat-exchanger visual check and carbon monoxide concerns raised in plain language.
SUNNYVALE DETAILSFurnace repair in
Furnace repair in
Sunnyvale.
Most Sunnyvale ranch homes still heat with a gas furnace in a hall closet, garage or attic. Many are 15 to 25 years old.
01
Closet and attic furnaces
Ignitors, flame sensors, pressure switches and blower motors are the usual failures. HAXX carries common parts.
02
Safety checks
Every furnace visit includes a check of venting, the heat exchanger and carbon monoxide risk.
03
Planning ahead
Bay Area Air District rules will limit the sale of new gas furnaces from 2029. Repairing now is fine; it is worth knowing for the next replacement.
What customers say
about HAXX.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
★★★★★
“Their technician was professional, honest, and took the time to explain the problem and the repair process clearly. Instead of pushing for an expensive replacement, they repaired our HVAC system and helped us save a significant amount of money. The work was completed carefully, and our air conditioner is now working well.”
★★★★★
“Thorough diagnostics of A/C system, identified and repaired the issue quickly!”
★★★★★
“Service was performed well and on time. Service person was highly skilled and provided easy to understand options to deal with the issue. Price for diagnostics was reasonable and easy to pay online.”
HOW A REPAIR VISIT WORKSFrom the first call
From the first call
to a working system.
01
Tell us the symptom
Brand, model and what it is doing. Photos of the label or error code help.
02
Diagnose on site
The technician tests the system and finds the cause, not just the symptom.
03
Approve the price
You see the repair price before work starts, and the options if a repair is not worth it.
04
Fix and test
The repair is completed and tested, or scheduled once the part arrives.
HAXX ON SITEReal work.
Real work.
Real homes and businesses.
A closer look at recent heating and cooling work by HAXX. Projects in Sunnyvale are marked with the city.
THE PEOPLE BEHIND THE WORKHands-on work.
Hands-on work.
A real look inside.
On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projectsRecent Projects
Sunnyvale System Recharge and Brazing Correction
System recharge and brazing correction.
Heat Pump Air Handler Installation
Heat pump air handler installation.
Carrier Furnace Diagnosis and Repair
Carrier furnace diagnosis and repair.
Gas Furnace Service
Gas furnace service.
Attic Plenum Resealing
Attic plenum resealing.
Sunnyvale Leaking Coil Replacement
Leaking coil replacement.
Heat Pump Installation
Heat pump installation.
Outdoor Heat Pump Installation
Outdoor heat pump installation.
GOOD TO KNOW
Furnace Repair in Sunnyvale: questions, answered.
Can you repair my gas furnace in Sunnyvale?
Yes. HAXX repairs all major furnace brands. The 2029 Air District rule applies to the sale of new furnaces, not to repairs.
Do you service furnaces in Eichlers?
Yes, including forced-air furnaces added to Eichlers. Radiant boiler systems are evaluated case by case.
Should I replace my furnace with a heat pump?
If the furnace is old or the repair is expensive, it is worth pricing a heat pump, which also adds cooling. HAXX can quote both.
Is it safe to run a furnace that smells like gas?
No. Turn it off, leave the house if the smell is strong, and call PG&E or 911. Call HAXX for the repair once the area is safe.
LET’S TALK ABOUT YOUR PROPERTYTell us what you need.
Tell us what you need.
We’ll start there.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.