Warm air from the vents
Refrigerant, compressor, capacitor and airflow checks to find why the system runs without cooling.
Central air not cooling, condenser humming or water by the furnace? HAXX repairs air conditioners and ductless systems throughout Fremont.
Serving Mission San Jose, Niles, Irvington, Centerville, Glenmoor and Ardenwood and the rest of Fremont. Share your address to confirm availability.

Central air conditioners, heat pumps in cooling mode and ductless systems. Most visits start with a full diagnostic so the repair targets the real cause.
Refrigerant, compressor, capacitor and airflow checks to find why the system runs without cooling.
Thermostat, breaker, disconnect, contactor and control-board testing.
Usually airflow or refrigerant charge. We fix the cause, not just thaw the ice.
Blower motors, dirty coils, clogged filters and duct problems that leave rooms warm.
Buzzing, grinding or burning smells checked before a small problem becomes a failed compressor.
Condensate drains, pans and pumps cleared and tested.
Inland Fremont runs warmer than the Peninsula, and late-summer heat waves push older systems hard. Most breakdowns trace back to a few worn parts.
Weak capacitors, burned contactors and failing fan motors cause most no-start calls during heat waves.
HAXX locates the leak at the coil, line set or valves before recharging, instead of topping off and hoping it holds.
Clogged condensate lines and dirty filters freeze coils and cause water damage in attics and closets.
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 Fremont 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
Compressor replacement.

Leaking coil replacement.

System recharge and brazing correction.

After-hours system repair.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.
Low refrigerant, a dirty coil, a failing compressor or blocked airflow are the usual causes. HAXX measures pressures and temperatures to find which one.
Yes. HAXX repairs single and multi-zone ductless systems as well as central air.
Often, yes, in summer especially. Call and the team will confirm the earliest arrival window for your address.
Compare the diagnosed fault, the repair price and the system's age and refrigerant. HAXX shows both paths so you can choose.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
