Why Is My Heat Pump Not Putting Out Heat?

Heat pumps are a versatile heating and cooling solution, making them a great choice for many homes. However, if it’s not blowing hot air on a cold winter evening, there’s clearly something wrong. Let’s take a look at five common reasons why heat pumps stop working and what you can do to address them!

Dirty Air Filters

When a dirty air filter obstructs airflow, a heat pump system cannot transfer heat efficiently. This issue, naturally, reduces the amount of warm air circulating through your home. 

In some cases, your heat pump system may even temporarily blow cold air before shutting down to prevent overheating. As such, regularly inspecting and replacing air filters is important for preventing clogs and will help your unit continue to blow hot air as intended.

A Blocked Unit

When the outdoor unit is blocked, it disrupts the heat exchange process and prevents the system from generating enough heat for your home. This means that when airflow is obstructed by seasonal debris, your heat pump may fail to blow warm air altogether. By clearing away leaves, ice, or other debris from around the outdoor unit, you can help it properly transfer heat throughout your home.

Duck Leakage

Are there leaks in your home’s ductwork? Leaks can prevent the indoor air handler unit from delivering hot air to your living spaces. Instead, the warm air escapes and leaves the heat pump struggling to meet demand. 

This inefficiency happens because the system is forced to overwork, resulting in higher energy bills and discomfort. Sealing the ducts ensures that warm air reaches every room so that your heat pump system can function as expected!

No Power

It’s obvious, but without electricity, your heat pump cannot produce enough heat to warm your home. When your heat pump loses power, it may stop functioning entirely or default to blowing cold air instead of hot air.

Some common causes of this issue include a tripped breaker or an indoor unit power switch that’s accidentally turned off. As a result, verifying the power supply and resetting the breaker can quickly restore the system’s ability to blow hot air in heat mode.

Thermostat Issues

Sometimes, the source of the problem is simpler than expected. Incorrect thermostat settings or sensor failures can lead to the system remaining in cooling mode or not switching to heat mode. If the thermostat misreads the room temperature, the heat pump might start blowing cool air when it should blow hot air. 

Additionally, a malfunctioning reversing valve may cause the system to deliver cold air even though the thermostat is set for warmth. Correcting these issues ensures the system operates properly, helping it consistently blow warm air.

If You Need Heat Pump Repair, Call Blanton & Sons Today

While some heat pump issues are easy to troubleshoot on your own, others are more complex. In the event you ever need heat pump repairs in Charleston and the greater Low Country area, reach out to Blanton & Sons. 
We also help with other heating repairs, too, as well as maintenance that will keep your system in top shape. Call us today to learn more about our heating and air conditioner services and to schedule one for your home!