Heat Pump Installation
When a heat pump is beyond repair, a correctly sized replacement restores efficient year-round comfort.
Heat pump repair for year-round comfort in Airport, CA
Heat Pump Repair for systems that blow cold, ice up or run nonstop
A heat pump works in both seasons, so a fault shows up in both. When yours struggles to heat, stays iced over or leans on backup electric strips, we test refrigerant, defrost controls and airflow to find the real cause.
- Ducted and ductless systems
- Defrost and reversing valve faults
- Refrigerant leak detection
How heat pumps fail and why diagnosis matters
A heat pump moves heat instead of creating it. In summer it pulls heat out of the house; in winter it reverses and pulls heat from the outdoor air, even when that air feels cold. The reversing valve, the defrost control, the expansion device and the refrigerant charge all have to cooperate for that to work.
Because the same equipment runs most of the year, heat pumps accumulate hours quickly. Small faults, such as a sticking defrost sensor or a slightly low charge, can go unnoticed until a cold snap exposes them and the system hands most of the work to expensive electric backup heat.
Our technicians carry the gauges, temperature probes and leak detectors needed to test a heat pump in both modes, so the repair addresses the underlying fault rather than just clearing ice or resetting a control.
Heat pump blowing cold air or covered in ice? Call and a certified technician will diagnose it.
Click Here To Call (888) 418-3681What our heat pump repairs cover
These are the systems we examine when a heat pump is not performing.
Defrost system
In heating mode, the outdoor coil runs colder than the outside air, so frost forms on it. The system periodically switches to defrost to melt that frost. If the defrost sensor, board or timer fails, ice builds up until airflow through the coil is blocked and heating capacity collapses. We test the sensor, observe a defrost cycle and verify that the outdoor fan and reversing valve respond correctly.
Reversing valve and solenoid
The reversing valve changes the direction of refrigerant flow. When the solenoid coil fails or the valve sticks partway, the system may heat when it should cool, cool when it should heat, or do neither well. We check the thermostat signal, the coil voltage and the temperatures across the valve to confirm whether the valve itself has failed before recommending its replacement.
Refrigerant charge and leaks
Heat pumps are sensitive to charge. A small leak reduces heating output noticeably in cold weather. We measure pressures and temperatures, calculate superheat and subcooling, and use electronic detection or bubble testing to locate leaks. Repairs are made before any refrigerant is added, and all refrigerant handling is done by EPA Section 608 certified technicians.
Backup heat and controls
Electric heat strips are meant to supplement a heat pump on very cold days or during defrost. If they run constantly, your electric bills rise sharply. We check the thermostat configuration, the outdoor temperature lockouts and the sequencing relays, since a control problem can make a healthy heat pump look weak.
What is normal for a heat pump and what is not
Heat pumps behave differently from furnaces and conventional air conditioners, and some of their everyday habits alarm owners who are new to them. Knowing the difference between normal operation and a genuine fault saves unnecessary worry and helps you call at the right moment.
Steam, frost and the defrost cycle
In cold, damp weather the outdoor coil gathers frost. A healthy heat pump reverses briefly to melt it, and during that cycle the outdoor fan stops, the unit may hiss or whoosh, and a cloud of vapor can rise from the cabinet. This is expected and usually lasts only a few minutes. What is not normal is a coil that stays encased in thick ice for hours, ice building on the top panel, or a unit that never seems to clear. Those patterns point to a defrost control, sensor or airflow problem.
Why the air feels cooler than a furnace
A furnace commonly delivers air well above 120 degrees F. A heat pump heats the house with a larger volume of milder air, often somewhere near body temperature or a little above. Holding a hand to the register can make it feel cool even while the system is heating correctly. The meaningful question is whether the house reaches and holds its set temperature. If rooms fall behind on mild days, a repair visit is worthwhile.
Auxiliary and emergency heat settings
Most heat pumps have electric resistance strips or a furnace that helps on the coldest days. The thermostat may show auxiliary heat when that backup is running, which is normal during recovery or deep cold. Emergency heat is a manual setting that shuts the heat pump off entirely and relies on backup alone. It is meant for a failed outdoor unit, not for everyday comfort, and using it routinely can raise electric bills sharply. If auxiliary heat appears constantly in mild weather, the heat pump itself may be underperforming.
Simple checks before calling
Confirm the thermostat is set to heat or cool as intended and that both the indoor and outdoor breakers are on. Look at the filter and replace it if it is gray and matted. Clear snow, leaves and drifting debris from around the outdoor unit and make sure it sits above ground level rather than in a puddle. If the outdoor unit is silent while the indoor blower runs, avoid resetting breakers repeatedly. A breaker that trips again is protecting the equipment from an electrical fault, and repeated resets can make the damage worse.
Refrigerant questions
Heat pumps are sealed systems and should not need refrigerant added as a routine task. A system that needs recharging has a leak. Many existing heat pumps use R-410A, while newer equipment uses lower global warming potential refrigerants such as R-454B or R-32. Our technicians hold EPA Section 608 certification and handle each refrigerant according to its requirements. When a leak is found, we explain whether it can be repaired and what that repair involves before any refrigerant is added.
Noises that deserve a call
A heat pump makes a range of ordinary sounds: the hum of the compressor, the whoosh of the reversing valve at the start and end of defrost, and the fan starting and stopping. Sounds that point to a fault include grinding or scraping from the outdoor fan, a loud metallic rattle from the cabinet, a shriek at start-up, or repeated clicking with no compressor start. Turn the system off if you hear grinding or scraping, since a fan blade striking ice or debris can damage the coil, and describe the sound when you book the visit.
When repair stops making sense
Older heat pumps facing a compressor failure, a major refrigerant leak in the outdoor coil, or repeated reversing valve trouble may be better candidates for replacement. We show the repair price alongside replacement options, with the age and condition notes behind each, and leave the decision to you.
Warning signs of a heat pump problem
Watch for these symptoms, especially during the first cold weeks of the season.
Ice that will not clear
Light frost is normal. A solid block of ice that lasts for hours means the defrost cycle is not working.
Cold air in heating mode
Air that feels cool from the vents may indicate a reversing valve fault or low refrigerant.
Rising electric bills
Unexplained increases often mean backup heat strips are carrying the load.
Constant running
A heat pump that never cycles off in moderate weather is likely losing capacity.
Loud whooshing or grinding
Some noise during defrost is normal, but grinding or rattling can signal fan or compressor issues.
Emergency heat indicator
If the thermostat shows auxiliary or emergency heat for long periods, the heat pump may not be contributing.
Our heat pump repair visit
Every visit follows a structured sequence.
Symptom review
We ask when the problem started, what the thermostat shows and whether it happens in heating, cooling or both.
Operation in both modes
Where conditions allow, the system is run in heating and cooling to compare performance.
Measurements
Pressures, temperatures, electrical values and airflow are recorded to pinpoint the fault.
Quote and approval
You receive a flat price for the repair, with an explanation of what failed.
Repair and test
The fix is completed and the system is monitored through a full cycle, including defrost when possible.
Factors that affect heat pump repair cost
These elements determine the flat price you are quoted.
| Component | Defrost sensors and capacitors are modest repairs; reversing valves and compressors are major ones. |
|---|---|
| Refrigerant work | Leak repair, evacuation and recharge add labor and material, especially on larger systems. |
| System type | Ductless and variable-speed units often use proprietary boards and sensors. |
| Warranty status | Parts covered by a manufacturer warranty can reduce the cost, though labor usually still applies. |
| Outdoor unit location | Rooftop or tightly enclosed units can add access time. |
Heat pump owners share their experience
From households that got their heat pumps working properly again.
The outdoor unit kept icing up every cold night. The technician replaced a failed defrost sensor and checked the charge while he was there.
Our power bill doubled in January. It turned out the thermostat was sending the system straight to heat strips. A settings change and a relay fixed it.
They found a small leak at a service valve, repaired it and recharged the system. Heating output is back to normal.
Heat pump repair questions
Clear answers for Airport, CA homeowners.
Is it normal for my heat pump to steam in winter?
Yes. Steam rising from the outdoor unit during a defrost cycle is normal. Persistent ice or no defrost at all is not.
Why does my heat pump blow lukewarm air?
Heat pump air is often cooler to the touch than furnace air, around the temperature of skin. If rooms stay cold, however, a diagnosis is needed.
Can I run emergency heat until the repair?
Emergency heat can keep the house warm temporarily, but it costs more to operate. Schedule a repair promptly.
Do you repair ductless heat pumps?
Yes. We diagnose and repair ductless systems, including indoor head and outdoor unit faults.
How often should a heat pump be serviced?
Because it runs all year, twice-yearly service is common, once before cooling season and once before heating season.