No heat
Thermostat, power, gas supply, ignition and control-board testing to find why the furnace will not fire.
Furnace not lighting, short-cycling or blowing cold air? HAXX repairs gas furnaces and air handlers throughout Monte Sereno.
Serving Via Sereno, the Bicknell Road area, Daves Avenue, Greenwood Lane and the El Sereno foothills and the rest of Monte Sereno. Share your address to confirm availability.

Gas furnaces in attics, closets, garages and crawl spaces. Every repair visit includes basic safety checks on the burners and venting.
Thermostat, power, gas supply, ignition and control-board testing to find why the furnace will not fire.
Furnaces that click, light and shut off are often a dirty flame sensor or a failing hot-surface igniter.
Limit switches, pressure switches and inducer motors checked in order.
Overheating from restricted airflow, a dirty filter or an oversized furnace.
Banging, squealing or a burning smell checked before the next cold night.
Venting, heat-exchanger visual check and carbon monoxide concerns raised in plain language.
Cold nights in the foothills put older furnaces to work. Most no-heat calls trace to ignition, airflow or safety switch problems.
Failed igniters, dirty flame sensors and bad gas valves are the usual causes of a furnace that tries to start and quits.
Cracked heat exchangers, blocked flues and tripped limit switches are inspected for safety, with CO testing on every gas appliance call.
Weak blower motors, capacitors and control boards are diagnosed and replaced with matched parts.
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.”
Brand, model and what it is doing. Photos of the label or error code help.
The technician tests the system and finds the cause, not just the symptom.
You see the repair price before work starts, and the options if a repair is not worth it.
The repair is completed and tested, or scheduled once the part arrives.
A closer look at recent heating and cooling work by HAXX. Projects in Monte Sereno are marked with the city.

On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projects
Carrier furnace diagnosis and repair.

Attic plenum resealing.

System recharge and brazing correction.

Gas furnace service.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.
Yes. The 2029 Air District rule covers sales of new furnaces, and the city's reach code exempts replacement of existing appliances. Repairs are not restricted.
Common causes are a dirty filter, a faulty flame sensor, an overheating limit switch or a thermostat issue. HAXX tests each to find it.
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.
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.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
