Heat pump repair in Birmingham, AL
Because a heat pump handles both the July heat and the January chill, it logs more hours than almost any appliance in the house. When it ices over, sticks in one mode or leans on backup heat, we find out why.
Heat pump repairs in Birmingham usually trace to a failed defrost control or sensor, a reversing valve that will not shift, a bad capacitor or contactor, a refrigerant leak, or backup heat covering for a weak system. Zeltman Heating & Air runs the system in both modes, pins down the fault and quotes the repair up front. A person answers 24/7.
Signs your heat pump needs repair
The outdoor unit stays encased in ice
Frost that never clears points to a failed defrost board, a bad coil sensor, low refrigerant or an outdoor fan that keeps running during defrost.
Cool air in heat mode
If the vents blow cool air while the outdoor unit runs, the reversing valve may be stuck or its solenoid may have failed.
Aux heat showing all the time
A thermostat showing auxiliary heat on a mild afternoon means the heat pump cannot keep up alone, which usually signals a fault.
Loud noises that never settle
A short whoosh during defrost is normal. Constant hissing, banging or grinding from the outdoor unit is not.
It works in one season only
A system that cooled fine in August but cannot heat in December often has a valve, sensor or charge problem specific to heating mode.
Bills climbing in a mild winter
When the strips do the work the heat pump should be doing, energy use rises fast even when the weather stays gentle.
Why heat pumps fail differently than a straight AC
A heat pump uses the same refrigerant loop as an air conditioner, but a reversing valve lets it run backward. In winter the outdoor coil becomes the cold side, pulling heat out of the air even on a 30 degree morning and moving it indoors. That second job adds parts a straight AC never needs.
Defrost is the one most homeowners notice. When the outdoor coil frosts over, the control board flips the system into cooling for a few minutes to melt the ice, and you may see steam and hear a whoosh. Thin frost that clears on its own is normal. A solid block of ice that keeps growing is a repair call.
The reversing valve, the defrost board and the sensors that tell it when to defrost are the parts we replace most on heat pumps. Capacitors and contactors wear quickly too, because the unit runs in both seasons. Low refrigerant often shows up as weak heating long before anyone notices weak cooling.
Backup heat hides a lot. Electric strips in the air handler can carry the house while the heat pump itself has quit, so the first sign is often a higher Alabama Power bill rather than a cold house. We check both the outdoor unit and the heat strips so one problem does not mask the other.
How a heat pump repair visit works
A person takes the call
Tell us what the outdoor unit looks and sounds like. If it is iced solid, we tell you whether to switch to emergency heat while you wait.
We test both modes
The technician runs heating and cooling, watches a forced defrost and reads pressures in each mode, because some faults only appear in one of them.
We find the real fault
Sensors, defrost board, reversing valve, capacitor and charge are checked in order, so we never replace a valve when an inexpensive sensor was the problem.
You get the options and the price
We explain the cause, whether the repair makes sense on a system of that age, and the price before any work starts.
We confirm heat and defrost
After the repair we measure supply temperature, confirm defrost starts and ends correctly and check that backup heat stages only when needed.
What we check on a heat pump repair call
- Reversing valve operation and solenoid coil
- Defrost control board, coil sensor and defrost timing
- Refrigerant pressures in both heating and cooling mode
- Capacitor, contactor and compressor amp draw
- Outdoor fan motor and coil cleanliness
- Auxiliary heat strips, sequencers and staging
- Thermostat setup for heat pump and backup heat wiring
- Supply air temperature and airflow across the indoor coil
What heat pump repair costs in Birmingham
$189 to $947
A capacitor, contactor or defrost sensor sits near the low end. A defrost board or outdoor fan motor lands in the middle. A reversing valve replacement means recovering and recharging refrigerant, so it costs more and is quoted on its own, as is a compressor. Every number is on the table before work starts.
Ask for a price (659) 777-4129What moves the number
- The failed part
- A sensor and a reversing valve are very different jobs, both in parts and in the hours of brazing and evacuation they take.
- Refrigerant type and amount
- Older R-22 heat pumps cost far more to recharge, and any repair that opens the refrigerant circuit adds refrigerant cost.
- Age of the system
- Parts for a recent Trane or Rheem heat pump are easy to get. Parts for some older or discontinued models take longer and cost more.
- Backup heat damage
- If the heat strips have been running overtime, they may need their own repair alongside the heat pump fix.
- Time of the call
- A night or holiday call during a freeze costs more than a planned weekday visit.
Heat pump repair around Birmingham
Heat pumps are common across the metro, in 1960s ranches in East Pinson Valley and Roebuck as well as the newer subdivisions of Helena, Moody and Chelsea. Many units installed in the late 2000s and early 2010s are now at the age where defrost boards, reversing valves and compressors start to wear out. That is when the repair or replace question gets real, and we answer it with numbers.
Our winter cold snaps are short but sharp. A heat pump that limps along at 45 degrees can fall well behind on a 20 degree night, which is when most heat pump calls come in. Irondale, Crestwood and Center Point sit close to our base on 15th Avenue North. We also cover the rest of Jefferson, Shelby and St. Clair counties every day.
Areas we cover most often
We repair and replace equipment from these manufacturers, plus most other makes.
Questions about heat pump repair in Birmingham
Light frost on a cold, damp morning is normal, and the defrost cycle should clear it within a few minutes. A thick block that keeps growing usually means a failed defrost board or sensor, low refrigerant or a fan problem. Switch the thermostat to emergency heat and call us.
Most defrost cycles run a few minutes and end once the coil warms up, often with a burst of steam. Cycles that run very long, repeat every few minutes or never seem to finish point to a sensor or control problem worth having a technician look at.
Sometimes the solenoid coil is the only failed part, and that is a quick, inexpensive fix. If the valve itself is stuck or leaking internally, it has to be replaced, which means recovering refrigerant, brazing and recharging. On an older system, that cost often tips the decision toward replacement.
Yes, if the outdoor unit is iced solid, making loud noises or blowing cool air. Emergency heat runs only the backup strips, so the house stays warm without stressing a failing heat pump. It costs more to run, so treat it as a short-term measure.
Usually, when the fix is a capacitor, contactor, sensor or defrost board. A compressor or reversing valve on an older R-22 heat pump usually is not. We price the repair and a replacement side by side, and we tell you plainly when a repair does not make sense.
Yes. We repair heat pumps from Goodman, Carrier, Trane, Rheem, Lennox, Amana, Daikin and most other makes found in Birmingham homes. The brand changes which parts we order, not the way we test the system.
Related services and reading
- Heat Pump Tune-UpTwice-yearly service that covers both the cooling and the heating side.
- Electric Furnace and Heat Strip RepairAir handlers with heat strips that blow cool air, trip breakers or smell hot.
- Refrigerant Leak RepairFind the leak, repair it and charge by weight instead of topping off every summer.
- Heat Pump InstallationNew or replacement heat pumps matched to the house, the ductwork and Alabama winters.
- Heat pump or gas furnace for a Birmingham winter?Heating guide
- Repair or replace an older AC: how to decideCosts guide
Need heat pump repair in Birmingham?
We answer 24/7. Tell us what the system is doing and we will tell you what happens next.