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 stuck on cool, iced over or throwing a fault in Rio Vista? HAXX repairs ducted and ductless heat pumps from the waterfront to Trilogy.
Serving Downtown Rio Vista, the Front Street waterfront, Trilogy at Rio Vista and Brann Ranch and the rest of Rio Vista. 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.
Rio Vista grew from about 7,400 residents in 2010 to about 10,000 in 2020, so much of the housing is recent, often with a split AC and furnace or a factory heat pump. Wind near the Montezuma Hills pushes dust and debris into outdoor units.
Windblown grit packs condenser fins and wears fan motors. HAXX cleans the coil and tests the motor before replacing parts.
A unit that will not switch modes or stays iced usually points to a defrost board, sensor or reversing valve. Each is tested before a quote.
As a C-10 electrical contractor, HAXX checks the disconnect, breaker and control wiring on the same call.
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 control, a bad sensor or low refrigerant. HAXX tests each one before recommending a repair.
Yes. HAXX services ducted and ductless heat pumps throughout Rio Vista, including newer homes in Trilogy.
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.
