As temperatures steadily climb, it’s important to keep an eye on your heat pump to ensure it is functioning properly. A frozen heat pump is one of the last things you want to deal with during a scorching hot summer day. However, this is a common issue many homeowners face, even when the temperatures outside are soaring. What causes a heat pump to freeze up? This can be concerning, but understanding the causes and how to address it can help prevent damage to your system.
Most heat pumps operate by moving refrigerant through a series of coils to transfer heat between the indoor and outdoor units. When everything is working properly, the heat pump can extract heat from the indoor air and release it outside. However, several factors can cause the system to become overwhelmed and freeze up.
What Causes a Heat Pump to Freeze Up?
Restricted Airflow
One common cause of a frozen heat pump is restricted airflow. When there’s not enough air flowing over the coils, the refrigerant doesn’t absorb enough heat. Therefore, the refrigerant is unable to carry heat to the outdoor unit. With restricted airflow, the evaporator coil in the heat pump can become too cold. In turn, this causes moisture in the air to freeze on the coil. Ice buildup can happen if the air filters are dirty or clogged, or if there are obstructions blocking air from circulating properly. Always remember to change your air filters regularly. Additionally, keeping the area around your outdoor unit clear of debris can help prevent this issue.
Low Refrigerant Levels
Another common cause of a frozen heat pump is low refrigerant levels. Refrigerant is responsible for transferring heat in and out of the system. So if there is not enough refrigerant, the heat pump may not be able to adequately remove heat from the air. Furthermore, if there’s a leak in the system, the refrigerant can escape, causing the pressure to drop and the coils to freeze. If you notice ice accumulation on your heat pump, it’s important to have a professional HVAC technician come out and inspect the system. They can locate any leaks and recharge the refrigerant as needed.
How Much Ice is Too Much on a Heat Pump?
It’s important to note that a small amount of frost or ice on a heat pump is normal, especially during times of high humidity. However, if the unit is covered in a layer of ice, it is likely a sign of a larger issue.
So, how much ice is too much on a heat pump? A good rule of thumb is that if the ice is more than a quarter of an inch thick, it’s a sign that there is a problem. Remember, a light dusting of frost on the coils is normal during the defrost cycle. However, if you notice a thick layer of ice forming, it’s time to take action. The ice can restrict airflow, reduce the efficiency of the system, and potentially damage the components. If you suspect your heat pump is frozen, turn off the system and allow the ice to melt before calling a professional for repairs.
Is Your Heat Pump Freezing Up? Rely on Satterlee Heating and Air
Suppose you notice that your heat pump is frozen. In that case, contacting a professional HVAC technician, such as Satterlee in Joplin, MO, is important to assess the situation and make any necessary repairs. You can rely on our experienced, professional HVAC experts to diagnose and fix any issues with your heat pumps. Whether it’s a simple airflow problem or a more complex refrigerant leak, we can get your system back up and running. Don’t let a frozen heat pump ruin your summer! Take care of the issue promptly and enjoy a cool, comfortable home once again. Contact Satterlee today to learn more!
