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.
Redwood City heat pump not heating, iced over or showing a fault light? HAXX repairs ducted and ductless heat pumps from Redwood Shores to Farm Hill.
Serving Mount Carmel, Farm Hill, Eagle Hill, Friendly Acres, Edgewood Park and Redwood Shores and the rest of Redwood City. 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.
Heat pumps in Redwood City range from attic systems in 1950s Farm Hill homes to compact units serving Redwood Shores townhomes. Access and layout shape most repairs.
In Redwood Shores, outdoor units often sit on small patios or shared pads. HAXX works within HOA access rules and checks clearances, drains and line sets.
On the sloped lots of Farm Hill and Eagle Hill, equipment is often under decks or in crawl spaces. Defrost, sensor and airflow faults are common there.
HAXX holds both HVAC and electrical licenses, so a tripping breaker, failed disconnect or bad low-voltage wire is fixed without a second contractor.
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
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Yes. HAXX services single-zone, multi-zone and ducted heat pumps across Redwood City, including Mitsubishi Electric and American Standard systems.
Some frost is normal in a cold snap, but a unit that stays iced usually has a defrost board, sensor, airflow or refrigerant problem. Each is tested before HAXX quotes a repair.
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.
