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, leaking water or blowing room-temperature air? HAXX repairs ductless systems in Daly City: Mitsubishi, Daikin, Fujitsu, LG and more.
Serving Westlake, Serramonte, St. Francis Heights, Crocker, Southern Hills and Bayshore and the rest of Daly City. 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 heat pumps in Daly City run mostly in heating mode. Outdoor units near the coast also face damp, salty air that wears on coils and electronics.
HAXX reads the fault, then checks sensors, interconnect wiring, control boards and fan motors on Mitsubishi, Daikin, Fujitsu, LG, Carrier and other brands.
Clogged condensate lines and pumps cause water at the indoor head. Refrigerant leaks at flare fittings are found and repaired before recharging.
Blower wheels and coils collect dust and growth over time. A deep clean restores airflow and reduces odors.
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.

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.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.

Lennox ac installation.

Compressor replacement.
Common causes are low refrigerant from a leak, a failed sensor, a defrost problem or a fault at the outdoor unit. HAXX tests each before quoting a repair.
Yes. HAXX repairs Mitsubishi, Daikin, Fujitsu, LG, Carrier and other ductless systems regardless of who installed them.
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.
