Average Repair Prices for 6 Common Heat Pump Issues

December 02, 2021

Your heat pump is an important part of your home because it delivers year-round comfort. But, like any home comfort system, it’s bound to experience some problems every now and then.

Let’s review these problems and how much they might cost to repair, so you’ll have some idea before you contact 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 correcting a thermostat setting or changing 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 ambient 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 appears jumbled or blank.
  • Has the circuit breaker been tripped? Your heat pump won’t be able to run if it lacks 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 replace it.

If these steps don’t fix the issue, you’ll need to contact a heating and cooling company like Comfort Zone Inc.

Estimated Repair Cost

This issue 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 run longer than normal to reach your desired temperature.

If the weather is typical, check that your thermostat is set properly 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 increase your electrical bills.

If your thermostat is set correctly, there are several other problems 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 obstructed by snow, bushes or yard waste.
  • Your gutters are dripping water on top of your heat pump, creating an icy buildup.
  • A part is malfunctioning, which may involve 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 close to the outdoor unit.

Estimated Repair Cost

Like we discussed before, there are many reasons why your heat pump won’t defrost. But here are several 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 kind of refrigerant your heat pump uses. R-22 Freon is pricier 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 linked to many issues. We suggest checking for:

  • Correct thermostat settings
  • Tripped circuit breakers
  • A dirty air filter
  • Ice on your heat pump

If there’s nothing wrong with your thermostat, circuit breakers or air filter, you’ll need assistance 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 severity 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 linked to your new thermostat. While you can install 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 running in your air handler, there’s probably an issue with the thermostat.

A couple other common thermostat problems involve:

  • Wiring was done incorrectly.
  • 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 suggest checking for:

  • Correct thermostat settings
  • Tripped circuit breakers
  • A dirty air filter
  • Ice on your heat pump

An icy heat pump or leaky ductwork will require the help of an HVAC technician. Ductwork is hard to reach since it’s located behind walls and multiple 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 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 irritating, but not when you call Comfort Zone Inc. Our pros have been delivering the quality, affordable heat pump repair Cape Coral homeowners have relied on since 1985. Call us at 239-214-0411 to request your free estimate now.

Average repair costs are sourced from Fixr, which compiles estimates based on nationwide averages.