No heat or no cooling
Checking the thermostat call, outdoor unit, reversing valve and controls to find why the system runs but does not heat or cool.
Heat pump short cycling, stuck in defrost or blowing lukewarm air? HAXX repairs ducted and ductless heat pumps in Hercules homes and townhomes.
Serving Victoria by the Bay, Village Park, Hercules by the Bay, Olympian Hills, Foxboro and the Waterfront and the rest of Hercules. Share your address to confirm availability.

Ducted systems, ductless mini-splits and multi-zone heat pumps. Tell us what the system is doing and we start the visit with that symptom.
Checking the thermostat call, outdoor unit, reversing valve and controls to find why the system runs but does not heat or cool.
Some frost in winter is normal. A unit that stays iced points to airflow, refrigerant or defrost-control problems.
Blinking lights and error codes on Mitsubishi, Daikin, Fujitsu and other ductless systems, traced to the sensor, board or refrigerant issue behind them.
Units that start and stop, rattle, hum or trip the breaker are checked for electrical, airflow and sizing problems.
Clogged condensate lines and drain pumps cleared and tested before water damages the wall.
If the system is not worth fixing, you get the reasons in writing and options to compare, not pressure.
Most Hercules homes were built from the mid-1970s onward, and the newer Victoria by the Bay and Waterfront units often came with compact equipment in tight closets. Access shapes every repair here.
Townhomes in Victoria by the Bay and the Waterfront tend to have air handlers in small closets and condensers on narrow side yards or decks. Coil, drain and airflow faults are common.
Olympian Hills and Foxboro homes on slopes often have long duct runs. Weak airflow at the far rooms usually points to ducts, filters or the blower.
HAXX is licensed for electrical work, so a tripping breaker, failed disconnect or control wiring fault is handled 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.

On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projects
Heat pump air handler service.

Compressor replacement.

Mitsubishi leak detection.

After-hours system repair.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Lennox ac installation.
Common causes are a stuck reversing valve, a failed defrost board or sensor, or a low refrigerant charge from a leak. HAXX tests each before recommending a repair.
Yes. HAXX works on closet air handlers, wall-mounted heads and rooftop or deck condensers common in Hercules townhome communities.
It depends on the fault, the refrigerant the system uses and the condition of the compressor and coils. HAXX explains the repair cost against replacement options so you can decide.
Yes. HAXX services wall, ceiling cassette and ducted mini-split heads, single-zone and multi-zone.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
