No heat
Thermostat, power, gas supply, ignition and control-board testing to find why the furnace will not fire.
No heat on a cold Napa night, a furnace that short cycles or locks out? HAXX repairs gas furnaces and says plainly when replacement makes more sense.
Serving Fuller Park, Napa Abajo, Alta Heights, Browns Valley, Westwood and Shurtleff and the rest of Napa. 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.
Average winter lows in Napa sit around 40 degrees, and many homes still rely on gas forced-air furnaces, some of them decades old.
Dirty flame sensors, failed igniters and pressure switch faults cause most no-heat calls.
Older furnaces may be near the end of their life. HAXX checks the heat exchanger and venting for safety.
Bay Area air district zero-NOx rules apply to the sale of new furnaces from 2029, not to repairing the one you have.
Rated 4.8 across 515+ reviews on Housecall Pro, Google and Facebook. Read more reviews.
“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.”
“Our commercial building had several HVAC problems, and their team carefully diagnosed each unit, explained the available options, and never pressured us into unnecessary replacements. They worked hard to repair what could be repaired and kept us informed throughout the process.”
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.

On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projects
System recharge and brazing correction.

Carrier furnace diagnosis and repair.

Attic plenum resealing.

Gas furnace service.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.
Yes. The Bay Area Air District's zero-NOx standard for furnaces applies to new units sold from 2029, not to repairs.
Common causes are a dirty flame sensor, a blocked filter, a pressure switch or overheating. HAXX tests each before quoting.
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.
