Warm air from the vents
Refrigerant, compressor, capacitor and airflow checks to find why the system runs without cooling.
AC in your Cupertino home running warm, freezing up or tripping a breaker? HAXX repairs central air and mini-splits, from capacitors to coil leaks.
Serving Monta Vista, Rancho Rinconada, Fairgrove, Garden Gate, Lynbrook and Inspiration Heights and the rest of Cupertino. 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.
Summer afternoons in Cupertino push older condensers hard, especially upstairs in two-story homes. Most breakdowns trace back to a few worn parts.
Dirty filters, weak blowers and low charge all freeze an evaporator coil. HAXX finds the cause instead of only thawing it out.
Failed capacitors, contactors and fan motors are the usual reasons an outdoor unit hums but will not run.
Before adding refrigerant, HAXX locates the leak so the charge does not drain out again.
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 Cupertino 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.

Main panel installation.

Main panel upgrade.

Ev charger installation.

Tesla wall connector installation.
Undersized ducts, a weak blower or a single system serving two floors are common causes. HAXX measures airflow before suggesting a fix.
Yes. HAXX repairs Mitsubishi, Daikin, Fujitsu, LG and other ductless systems.
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.
