Not heating or cooling
Low refrigerant, a failed sensor, a stuck expansion valve or a control fault. Each is tested before a part is ordered.
Mini-split blinking an error code, dripping water or not cooling? HAXX repairs ductless systems across San Jose, from Eichler retrofits to backyard ADUs.
Serving Willow Glen, Cambrian, Almaden Valley, Evergreen, Berryessa and West San Jose and the rest of San Jose. Share your address to confirm availability.

Wall, ceiling cassette and slim-ducted mini-splits that stop heating or cooling, leak water or show error codes. HAXX repairs single-zone and multi-zone systems from all major brands.
Low refrigerant, a failed sensor, a stuck expansion valve or a control fault. Each is tested before a part is ordered.
Fault codes are read and traced to the sensor, board or communication wire behind them.
Clogged condensate lines, failed pumps and dirty coils are cleared and the drain is tested.
Flare joints and line sets are leak-tested and repaired before the system is recharged.
Indoor blower and outdoor fan motors, capacitors and loose parts that cause rattling.
Filters, coils and blower wheels cleaned to restore output and stop musty smells.
San Jose added ductless heat pumps to Eichlers in Willow Glen and Cambrian and to new ADUs in Berryessa and Evergreen. As those systems age, the same few faults keep coming up.
HAXX reads the fault code, then tests sensors, control boards and indoor-to-outdoor communication wiring before ordering a part.
Water running down the wall below a head usually means a clogged condensate line, failed pump or dirty coil. Each one is cleared and tested.
Mitsubishi Electric, Daikin, Fujitsu, LG, Carrier and other ductless brands, in single-zone and multi-zone setups.
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 San Jose 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
Mitsubishi leak detection.

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Span drive ev charger installation.
Yes. HAXX repairs ductless units serving ADUs, garage conversions and additions, including the dedicated circuit that feeds them.
Common causes are low refrigerant from a leaking flare joint, a failed sensor or a control fault. HAXX checks each before quoting.
Mitsubishi Electric, Daikin, Fujitsu, LG, Carrier and most other ductless brands, single-zone and multi-zone.
Often, yes. Sensors, boards, drains and fan motors are common, affordable repairs. If the compressor fails on an older unit, HAXX prices a replacement too.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
