Whether you’re hosting a holiday gathering or simply enjoying a quiet night in, the temperature inside your home is essential to everyone’s comfort. Yet just like any other major appliance, your air source heat pump is likely to face some issues here and there.

Perhaps it might not turn on or no longer provide the same warmth it once did. Either way, it’s important that you understand the common reasons your heat pump may be acting up so you can take the appropriate steps to resolve them.

Here are 5 reasons why your heat pump might not be turning on and what you can do about it.

1. Power Supply Issues

One of the first things to check when your heat pump isn’t turning on is whether it’s receiving power. Ensure that the unit is plugged in properly and that the circuit breaker hasn’t been tripped. If the breaker has been tripped, reset it. If this doesn’t resolve the issue, you may need to call an electrician to inspect the electrical system for any faults or wiring issues.

2. Thermostat Problems

If the thermostat is set incorrectly or has a dead battery, it may not be sending the right signals to the heat pump. Check the thermostat settings to make sure it’s set to the heating mode and the desired temperature. If your thermostat is battery-powered, replace the batteries.

3. Dirty or Clogged Air Filters

When air filters become dirty or clogged, airflow is restricted, making it difficult for the system to heat or cool effectively. This can lead to the heat pump freezing up or not turning on at all. Check and replace the air filters if necessary.

4. Frozen Coils

During the winter, your heat pump may accumulate ice on its coils, which can block airflow and prevent the system from starting. Frozen coils are often caused by poor airflow, low refrigerant levels, or a malfunctioning defrost cycle. If you notice ice on your heat pump’s coils, turn the system off and allow it to defrost. If the problem persists, you may need a professional HVAC technician to inspect the refrigerant levels or defrost cycle.

5. Refrigerant Leaks

If your heat pump isn’t turning on, a refrigerant leak could be the culprit. Low refrigerant levels can cause the heat pump to fail because the system can’t properly transfer heat. Refrigerant leaks require professional repair, as the system needs to be recharged and any leaks sealed to ensure proper operation.

If the above troubleshooting tips don’t help or you’re not comfortable with the DIY approach, contact P.C. Plumbing, Heating, AC & Remodeling today. Our heating specialists are trained to handle a variety of air source heat pump issues, including yours. Contact us today to restore your heat pump’s functionality quickly so you can stay warm throughout the season.