Your heat pump is an important part of your home because it delivers year-round comfort. But, like any home comfort system, it’s likely to have some issues every now and then.
Let’s go over these problems and how much they might cost to repair, so you’ll have some idea before you call an HVAC technician. Some of the most typical 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 suggest checking all of them. Sometimes they are as easy as fixing a thermostat setting or replacing your air filter.
Here’s what to check:
- Is your thermostat on the right setting? If you want cooling, 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, replace the batteries if the screen appears 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 corresponding 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 replace it.
If these steps don’t fix the problem, you’ll need to contact a heating and cooling company like AZ Air Conditioning and Heating.
Estimated Repair Cost
This problem can be complicated, so how much it costs to correct it will depend on what’s wrong.
2. Heat Pump Won’t Turn Off
If it’s extremely 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 properly and running normally. If the fan setting is at “on,” the blower motor on your air handler will run 24/7. So, it’ll appear as though your heat pump is running all the time. Constantly using the blower can keep humidity levels under control, but it’ll also drive up your electrical bills.
If your thermostat is set properly, there are a few other issues that could be causing your heat pump to run all the time. They include:
- A new thermostat that isn’t appropriate for your heat pump.
- A malfunctioning compressor contactor, which regulates the flow of electricity.
- Leaky ductwork.
Estimated Repair Cost
This can be linked to a lot of issues, so your heat pump repair cost will depend on the problem and how difficult it is.
3. Heat Pump Won’t Defrost
Occasionally during cold weather, your heat pump will temporarily go into cooling mode. This will melt 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 happening:
- Your heat pump doesn’t have sufficient airflow because it’s obstructed by snow, bushes or yard waste.
- Your gutters are leaking water on top of your heat pump, causing 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 notice a sweet, formaldehyde-like odor near the outdoor unit.
Estimated Repair Cost
Like we mentioned before, there are a lot of 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 extent 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 pricier since it’s no longer being manufactured.
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 problems. We recommend checking for:
- Right thermostat settings
- Tripped circuit breakers
- A dirty 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 reviewed earlier, a heat pump that won’t defrost might have an issue 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 issue.
- 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 more expensive since it’s no longer being produced.
- 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 tied to your new thermostat. While you can use just about any thermostat with a furnace, the same isn’t accurate for heat pumps, especially if you need backup or emergency heating.
You can check 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 typical thermostat problems involve:
- Wiring was done wrong.
- Thermostat isn’t communicating with heat pump.
- Thermostat is in emergency heat mode, which involves a reset.
It’s recommended to have a heating and cooling professional recommend a thermostat and expertly install it. That way, you’ll stay away from any compatibility or wiring issues.
Estimated Repair Costs
The cost of professional thermostat installation depends greatly on what kind of thermostat you want. While programmable thermostats are less expensive, they lack the advanced features and convenience of a smart thermostat.
6. Heat Pump Won’t Heat
A heat pump that won’t heat is linked to similar problems with a heat pump that won’t cool. We recommend checking for:
- Appropriate thermostat settings
- Tripped circuit breakers
- A dirty air filter
- Ice on your heat pump
An icy heat pump or leaky ductwork will require the assistance of an HVAC technician. Ductwork is difficult to reach since it’s placed behind walls and numerous issues can cause your heat pump to freeze up.
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 issue.
- 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 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 contact AZ Air Conditioning and Heating. Our professionals have been delivering the quality, affordable heat pump repair Los Angeles homeowners have relied on since 1984. Call us at 800-296-5088 to request your free estimate now.
Average repair costs are sourced from Fixr, which compiles estimates based on nationwide averages.