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 REPAIR · SUNNYVALEHeat Pump Repair
Heat Pump Repair
in Sunnyvale, CA.
Heat pump blowing cold air, stuck in one mode or tripping the breaker? HAXX diagnoses and repairs ducted and ductless heat pumps across Sunnyvale.
Serving Cherry Chase, Ortega Park, Lakewood Village, Ponderosa Park, Fairbrae and the Heritage District and the rest of Sunnyvale. Share your address to confirm availability.
4.8 rating · 515+ reviewsHVAC & electrical, one teamPermits handledCA Lic #1081990
Heat pump problems
we diagnose and fix.
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.
Ice on the outdoor unit
Some frost in winter is normal. A unit that stays iced points to airflow, refrigerant or defrost-control problems.
Mini-split error codes
Blinking lights and error codes on Mitsubishi, Daikin, Fujitsu and other ductless systems, traced to the sensor, board or refrigerant issue behind them.
Short cycling and noise
Units that start and stop, rattle, hum or trip the breaker are checked for electrical, airflow and sizing problems.
Water leaks from indoor heads
Clogged condensate lines and drain pumps cleared and tested before water damages the wall.
Repair or replace advice
If the system is not worth fixing, you get the reasons in writing and options to compare, not pressure.
SUNNYVALE DETAILSHeat pump repair
Heat pump repair
in Sunnyvale.
Sunnyvale has more Eichler homes than any other city, plus thousands of 1950s and 1960s ranch homes. Many now run on heat pumps, and each layout fails in its own way.
01
Eichler mini-splits
Ductless heads in Fairbrae, Rancho Verde and Cherry Chase Eichlers often need line-set, drain and sensor work rather than a new system.
02
Ducted systems in ranch homes
Attic air handlers in Ortega Park and Lakewood Village homes are prone to clogged drains, weak airflow and refrigerant leaks at the coil.
03
Electrical faults
Because HAXX is also a licensed electrician, breaker trips, disconnects and control wiring are checked on the same visit.
What customers say
about HAXX.
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.”
HOW A REPAIR VISIT WORKSFrom the first call
From the first call
to a working system.
01
Tell us the symptom
Brand, model and what it is doing. Photos of the label or error code help.
02
Diagnose on site
The technician tests the system and finds the cause, not just the symptom.
03
Approve the price
You see the repair price before work starts, and the options if a repair is not worth it.
04
Fix and test
The repair is completed and tested, or scheduled once the part arrives.
HAXX ON SITEReal work.
Real work.
Real homes and businesses.
A closer look at recent heating and cooling work by HAXX. Projects in Sunnyvale are marked with the city.
THE PEOPLE BEHIND THE WORKHands-on work.
Hands-on work.
A real look inside.
On site during a commercial VAV box repair: access above a suspended ceiling, equipment and the work in progress.
Explore recent projectsRecent Projects
Sunnyvale Leaking Coil Replacement
Leaking coil replacement.
Heat Pump Installation
Heat pump installation.
Heat Pump Air Handler Service
Heat pump air handler service.
Compressor Replacement
Compressor replacement.
Mitsubishi Leak Detection
Mitsubishi leak detection.
Attic Plenum Resealing
Attic plenum resealing.
After-Hours System Repair
After-hours system repair.
Sunnyvale System Recharge and Brazing Correction
System recharge and brazing correction.
GOOD TO KNOW
Heat Pump Repair in Sunnyvale: questions, answered.
Do you repair heat pumps in Sunnyvale Eichlers?
Yes. HAXX services ductless and ducted heat pumps in Eichler homes, including multi-zone mini-split systems.
Can you fix a heat pump that only blows cold air?
Usually. The cause is often a reversing valve, defrost control, sensor or low refrigerant charge. HAXX tests each one before quoting a repair.
Is it worth repairing an older heat pump?
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.
Do you repair ductless mini-splits?
Yes. HAXX services wall, ceiling cassette and ducted mini-split heads, single-zone and multi-zone.
LET’S TALK ABOUT YOUR PROPERTYTell us what you need.
Tell us what you need.
We’ll start there.
Share the property, equipment and questions you have in mind.
(408) 901-8315
Call HAXX to discuss your property and scheduling.