Heat Pump Problems: Stay Cool with These Solutions

heat pump

A heat pump is an eco-friendly substitute for conventional heating and cooling systems, making it a favoured option for homeowners throughout Canada. However, heat pumps may encounter problems over time, as with all devices. 

To assist you in maintaining a cool and cozy environment, we’ve put together a list of typical heat pump issues and their remedies. 

Keep in mind that it’s always a good idea to seek expert advice for any repairs, but being knowledgeable can help you make smarter choices and restore your system more rapidly.

1. Heat Pump Not Turning On

There could be several reasons why your heat pump isn’t turning on. First, ensure that the thermostat and the desired temperature are set to the correct mode (heating or cooling). 

Next, check if the circuit breaker has tripped or if a fuse has blown. If either has occurred, reset the breaker or replace the fuse and see if the heat pump starts working.

If these steps don’t resolve the issue, it’s time to call a professional. The problem may be related to the heat pump’s wiring or control board, which is best left to a trained technician to diagnose and repair.

2. Insufficient Heating or Cooling

Various factors can cause a heat pump that isn’t providing enough heating or cooling. Start by checking the air filter–a dirty filter can reduce airflow and system efficiency. Clean or replace the filter as needed.

Next, ensure that the outdoor unit is clean and free of debris. Leaves, grass, and dirt can restrict airflow, affecting the heat pump’s performance. 

If the problem persists, it may be due to low refrigerant levels, a malfunctioning reversing valve, or a faulty compressor. These issues require a professional’s assistance.

3. Noisy Heat Pump

Strange sounds coming from your heat pump might point to various issues. If you hear banging or clanking noises, it could be caused by loose components inside the unit, like a fan blade or motor mount. 

A humming sound might suggest an electrical problem with the contactor or capacitor. Hissing or bubbling noises could indicate a leak in the refrigerant.

Dealing with these sounds immediately is crucial, as ignoring them could result in more serious problems and expensive repairs. Reach out to an expert to identify and resolve the issue.

4. Heat Pump Constantly Running

If your heat pump is constantly running, it can be worrisome as it may result in higher energy costs and damage to the system. 

First, examine the thermostat settings. If the thermostat is set to “fan on,” the fan will operate non-stop, giving the impression that the heat pump is perpetually on. To fix this problem, change the setting to “auto.”

Should the issue continue, it could be caused by a clogged or unclean air filter, insufficient refrigerant, or a faulty thermostat. 

These factors can impact the effectiveness of the heat pump, making it work longer to keep the preferred temperature. Seek the help of an expert to identify and address the problem.

5. Heat Pump Icing Up

It’s normal for heat pumps to accumulate some frost on the outdoor unit during colder months. However, excessive ice buildup can impede the system’s performance and lead to damage. 

A heat pump has a defrost cycle to remove ice buildup, but the ice may not melt as it should if the cycle isn’t working correctly.

Ensure the outdoor unit is clean and free of debris, and check for any issues with the defrost control, sensors, or reversing valve. If the problem persists, contact a professional to diagnose and repair the issue.


A well-maintained heat pump can provide efficient heating and cooling for many years. However, if you encounter common heat pump problems, it’s essential to address them promptly. Regular maintenance and timely repairs can extend your system’s life, maintain its efficiency, and ensure your home stays comfortable all year round.

Always consult a professional for repairs or maintenance tasks, as they have the tools, knowledge, and expertise to safely and effectively handle heat pump issues. Stay cool and enjoy the benefits of your heat pump with these solutions in mind.

For affordable and reliable repairs and installation on all Daikin furnaces, air conditioners and heat pumps, we can help you. Contact Climate Experts, your authorized Daikin Dealers Toronto, today! Request a free estimate online.

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