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 not cooling, flashing an error code or dripping indoors? HAXX repairs Mitsubishi, Daikin, Fujitsu, LG and Carrier ductless systems in San Bruno.
Serving Mills Park, Rollingwood, Crestmoor, Portola Highlands, Huntington Park and Lomita Park and the rest of San Bruno. 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.
Damp marine air and steady heating use put San Bruno mini-splits to work much of the year. Drains, sensors and fan motors are the parts that wear first.
HAXX reads the fault code, then tests sensors, boards and the wiring between indoor heads and the outdoor unit.
Clogged condensate lines and failed pumps cause drips down the wall. Lines are cleared and pumps replaced as needed.
Flare-joint leaks are found and repaired, and coils and blower wheels are cleaned to restore airflow.
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 Bruno 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.

Bathroom fan installation.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.

Lennox ac installation.
A blinking light is a fault code. It can point to a sensor, board, fan motor or communication problem, which HAXX tests on site.
Yes. HAXX repairs Mitsubishi, Daikin, Fujitsu, LG, Carrier and other ductless systems.
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.
