Your heat pump is an important part of your home because it provides year-round comfort. But, like any home comfort system, it’s likely to experience some issues every now and then.
Let’s go over these issues and how much they might cost to fix, so you’ll have some idea before you call an HVAC technician. Some of the most common heat pump repair problems include:
- Heat pump won’t turn on
- Heat pump won’t turn off
- Heat pump won’t defrost
- Heat pump won’t cool
- Heat pump won’t turn on after changing thermostat
- Heat pump won’t heat
1. Heat Pump Won’t Turn On
There are plenty of reasons why your heat pump won’t turn on, so we recommend checking all of them. Sometimes they are as simple as fixing a thermostat setting or replacing your air filter.
Here’s what to check:
- Is your thermostat on the correct setting? If you want air conditioning, make sure it’s set to “cool,” “auto” and that your setting is lower than the room temperature. If you want heat, it should be set to “heat,” “auto” and your setting should higher than the current temperature. If you have a programmable thermostat, put in new the batteries if the screen looks jumbled or blank.
- Has the circuit breaker been tripped? Your heat pump won’t be able to run if it doesn’t have power. Reset the appropriate breaker if it’s facing the outside of the electrical panel.
- Is the air filter dirty? A dirty air filter is troublesome for your heat pump. If you can’t see light through it, it’s time to get a new one.
If these steps don’t fix the issue, you’ll need to call a heating and cooling company like Kilbourne Heating & AC.
Estimated Repair Cost
This problem can be complex, so how much it costs to fix it will depend on what’s wrong.
2. Heat Pump Won’t Turn Off
If it’s very hot or cold outside, your heat pump may need to operate longer than normal to achieve your desired temperature.
If the weather is typical, check that your thermostat is set correctly and operating normally. If the fan setting is at “on,” the blower motor on your air handler will run 24/7. So, it’ll sound like your heat pump is working all the time. Constantly running the blower can keep humidity levels in check, but it’ll also drive up your electrical bills.
If your thermostat is set correctly, there are several other issues that could be causing your heat pump to run all the time. They include:
- A new thermostat that isn’t compatible with your heat pump.
- A malfunctioning compressor contactor, which controls the flow of electricity.
- Leaky ductwork.
Estimated Repair Cost
This can be linked to many issues, so your heat pump repair cost will depend on the problem and how complex it is.
3. Heat Pump Won’t Defrost
Every now and then during cold weather, your heat pump will briefly go into cooling mode. This will dissolve light frost and ice that naturally accumulates on the coils. A heat pump that becomes totally frozen may have difficulty heating your home or shut down altogether.
Here are several reasons why this might be taking place:
- Your heat pump doesn’t have sufficient airflow because it’s blocked by snow, bushes or yard waste.
- Your gutters are leaking water on top of your heat pump, creating an icy buildup.
- A part is malfunctioning, which may include the reversing valve, relays, controls or sensors.
- The outdoor fan motor is damaged, dying or dead.
- Your heat pump has a refrigerant leak. This is possible if you’re hearing bubbling or hissing sounds. Or if you discover a sweet, formaldehyde-like odor near the outdoor unit.
Estimated Repair Cost
Like we discussed before, there are many reasons why your heat pump won’t defrost. But here are a few estimated costs for some of these issues. Keep in mind your cost may vary based on your heat pump brand, model and the severity of the problem.
- Replace reversing valve: $200–$600
- Replace outdoor fan motor: $250–$650
- Repair refrigerant leak: Depends on the type of refrigerant your heat pump uses. R-22 Freon is more expensive since it’s no longer being produced.
4. Heat Pump Won’t Cool
Just like a heat pump that won’t turn on, a heat pump that won’t cool can be connected to many issues. We suggest checking for:
- Correct thermostat settings
- Tripped circuit breakers
- A clogged air filter
- Ice on your heat pump
If there’s nothing awry with your thermostat, circuit breakers or air filter, you’ll need help from an HVAC technician to identify a problem with your ductwork or an iced-over heat pump. Like we discussed earlier, a heat pump that won’t defrost might have a problem with its reversing valve, outdoor fan motor or a refrigerant leak.
Estimated Repair Costs
These repair costs are estimates. Your total cost may vary based on your heat pump brand, model and the extent of the problem.
- Replace reversing valve: $200–$600
- Replace outdoor fan motor: $250–$650
- Repair refrigerant leak: Depends on the kind of refrigerant your heat pump uses. R-22 Freon is pricier since it’s no longer being manufactured.
- Seal leaky ductwork: Depends on house size.
5. Heat Pump Won’t Turn On After Changing Thermostat
If your heat pump won’t turn on after changing the thermostat, the problem is probably linked to your new thermostat. While you can use just about any thermostat with a furnace, the same isn’t true for heat pumps, especially if you need backup or emergency heating.
You can test your new thermostat by switching the fan mode to “on.” If you don’t hear the blower motor start in your air handler, there’s probably a problem with the thermostat.
A couple other common thermostat problems involve:
- Wiring was done wrong.
- Thermostat isn’t interacting with heat pump.
- Thermostat is in emergency heat mode, which requires a reset.
It’s wise to have a heating and cooling pro recommend a thermostat and expertly install it. That way, you’ll avoid any compatibility or wiring problems.
Estimated Repair Costs
The cost of professional thermostat installation depends considerably on what type of thermostat you want. While programmable thermostats are less expensive, they are missing the sophisticated features and convenience of a smart thermostat.
6. Heat Pump Won’t Heat
A heat pump that won’t heat is connected to similar problems with a heat pump that won’t cool. We suggest checking for:
- Appropriate thermostat settings
- Tripped circuit breakers
- A clogged air filter
- Ice on your heat pump
An icy heat pump or leaky ductwork will require the assistance of an HVAC technician. Ductwork is hard to reach since it’s located behind walls and numerous issues can cause your heat pump to ice over.
Estimated Repair Costs
These repair costs are estimates. Your total cost may vary based on your heat pump brand, model and the level of the issue.
- Replace reversing valve: $200–$600
- Replace outdoor fan motor: $250–$650
- Repair refrigerant leak: Depends on the type of refrigerant your heat pump runs on. R-22 Freon is pricier since it’s no longer being made.
- Seal leaky ductwork: Depends on house size.
Resolve Your Heat Pump Problems Quickly and Affordably with Our Help
Dealing with a malfunctioning heat pump can be frustrating, but not when you call Kilbourne Heating & AC. Our professionals have been delivering the quality, affordable heat pump repair Delray Beach homeowners have depended on since 1986. Contact us at 561-287-7071 to request your free estimate now.
Average repair costs are sourced from Fixr, which compiles estimates based on nationwide averages.