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 showing an error code, leaking water or not heating? HAXX repairs Mitsubishi, Daikin, Fujitsu, LG, Carrier and other ductless systems in Monte Sereno.
Serving Via Sereno, the Bicknell Road area, Daves Avenue, Greenwood Lane and the El Sereno foothills and the rest of Monte Sereno. 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.
Ductless systems heat and cool many Via Sereno Eichlers, additions and home offices here. Outdoor units near oaks and brush fill with debris quickly.
HAXX reads the fault code, then tests sensors, control boards and the communication wiring between indoor and outdoor units.
Blocked drains and failed condensate pumps cause wall stains. Refrigerant leaks cause weak output. Both are traced before parts go in.
Noisy or stalled fan motors, dirty blower wheels and clogged coils are repaired and cleaned on the same visit.
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 Monte Sereno 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.

Carrier furnace diagnosis and repair.

Attic plenum resealing.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.
Mitsubishi, Daikin, Fujitsu, LG, Carrier and most other major brands, single and multi-zone.
The blink pattern is a fault code. It often points to a sensor, a board or a wiring fault between units. HAXX tests to confirm.
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.
