Warm air from the vents
Refrigerant, compressor, capacitor and airflow checks to find why the system runs without cooling.
Concord AC running nonstop, freezing up or not turning on? HAXX repairs central air, heat pumps and ductless systems across Concord.
Serving Colony Park, Clayton Valley Highlands, Holbrook, Turtle Creek, Ellis Lake and Todos Santos and the rest of Concord. Share your address to confirm availability.

Central air conditioners, heat pumps in cooling mode and ductless systems. Most visits start with a full diagnostic so the repair targets the real cause.
Refrigerant, compressor, capacitor and airflow checks to find why the system runs without cooling.
Thermostat, breaker, disconnect, contactor and control-board testing.
Usually airflow or refrigerant charge. We fix the cause, not just thaw the ice.
Blower motors, dirty coils, clogged filters and duct problems that leave rooms warm.
Buzzing, grinding or burning smells checked before a small problem becomes a failed compressor.
Condensate drains, pans and pumps cleared and tested.
Summer highs in Concord average in the high 80s, and heat waves can push past 100 in August and September. That is when worn parts fail.
Clogged filters, failing blower motors and low refrigerant cause ice on the indoor coil. HAXX finds the cause instead of just thawing it.
Burnt contactors and failed capacitors are the most common heat-wave failures. They are tested on the first visit.
A system that needs refrigerant every summer has a leak. HAXX locates it and quotes the repair before recharging.
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
Compressor replacement.

Leaking coil replacement.

System recharge and brazing correction.

After-hours system repair.

Heat pump installation.

Outdoor heat pump installation.

Heat pump air handler installation.

Heat pump air handler service.
Common causes are a dirty condenser coil, a low refrigerant charge, a failing capacitor or leaky attic ducts. Each is tested before a repair is quoted.
Yes, including older units in 1960s and 1970s homes. If parts are no longer practical, HAXX will say so.
Often, yes, in summer especially. Call and the team will confirm the earliest arrival window for your address.
Compare the diagnosed fault, the repair price and the system's age and refrigerant. HAXX shows both paths so you can choose.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.
