No heat or no cooling
Checking the thermostat call, outdoor unit, reversing valve and controls to find why the system runs but does not heat or cool.
Heat pump short cycling, frozen over or stuck on cool? HAXX troubleshoots and repairs ducted and ductless heat pumps in homes throughout Campbell.
Serving Downtown Campbell, San Tomas, Campbell Village, Hamann Park, Moreland West and the Pruneyard-Dry Creek area and the rest of Campbell. Share your address to confirm availability.

Ducted systems, ductless mini-splits and multi-zone heat pumps. Tell us what the system is doing and we start the visit with that symptom.
Checking the thermostat call, outdoor unit, reversing valve and controls to find why the system runs but does not heat or cool.
Some frost in winter is normal. A unit that stays iced points to airflow, refrigerant or defrost-control problems.
Blinking lights and error codes on Mitsubishi, Daikin, Fujitsu and other ductless systems, traced to the sensor, board or refrigerant issue behind them.
Units that start and stop, rattle, hum or trip the breaker are checked for electrical, airflow and sizing problems.
Clogged condensate lines and drain pumps cleared and tested before water damages the wall.
If the system is not worth fixing, you get the reasons in writing and options to compare, not pressure.
Most Campbell houses are 1950s to 1970s single-story homes, so a heat pump here usually serves an attic duct system or a few wall-mounted heads.
Clogged condensate lines, dirty coils and failing blower motors are common in the compact ranch homes around Hamann Park and Campbell Village.
Mini-splits in Downtown bungalows, additions and ADUs often stop on sensor, drain or communication faults that can be repaired without new equipment.
As a C-10 electrical contractor too, HAXX tests breakers, the outdoor disconnect and low-voltage wiring on the same call.
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. Projects in Campbell 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
After-hours system repair.

Heat pump air handler service.

Compressor replacement.

Mitsubishi leak detection.

Leaking coil replacement.

Attic plenum resealing.

Heat pump installation.

American standard rooftop package unit.
Some frost in winter is normal, but a solid ice layer points to a defrost control, sensor, airflow or refrigerant problem. HAXX checks each before quoting.
Yes. HAXX repairs single-zone and multi-zone ductless systems, including units serving backyard ADUs and garage conversions.
It depends on the fault, the refrigerant the system uses and the condition of the compressor and coils. HAXX explains the repair cost against replacement options so you can decide.
Yes. HAXX services wall, ceiling cassette and ducted mini-split heads, single-zone and multi-zone.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
