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.
Ductless head not heating, cooling or responding to the remote? HAXX repairs mini-splits in Monta Loma Eichlers and homes across Mountain View.
Serving Old Mountain View, Monta Loma, Waverly Park and Cuesta Park and the rest of Mountain View. 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.
Many Mountain View homes switched to ductless heat pumps as they moved off gas, so a lot of systems here are multi-zone and fairly new. Warranty coverage is often worth checking first.
In Monta Loma and other Eichler tracts, line sets and drains run along the outside of the house, where sun and weather wear down insulation and fittings.
When one head stops while others run, the cause is often a sensor, branch wiring or a board in the outdoor unit. HAXX isolates the zone at fault.
Mitsubishi Electric, Daikin, Fujitsu, LG, Carrier and other common ductless brands.
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 Mountain View 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.

After-hours system repair.

Commercial circuit installation.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.

Lennox ac installation.
Many recent installs are. Have the model, serial number and install date ready, and HAXX will tell you what the manufacturer warranty may cover.
On a multi-zone system, a single head usually fails from a sensor, wiring or drain problem rather than the outdoor unit. HAXX tests that zone first.
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.
