Why is my Heat Pump Freezing In The Summer?

During the hot and humid summer months in Iowa, the last thing you want is for your heat pump to stop working. When you notice that your heat pump isn’t cooling your home like it usually would, one of the first things you should do is to inspect your outdoor unit. If you find that your unit is covered with frost, you might be confused. Why is it so hot, but my heat pump looks like an ice cube?

Novak Heating, Cooling, and Air Duct Cleaning has the answers as to why you have a frozen heat pump in the summer and what you can do to fix it. Usually when your heat pump is freezing, it means that something is not working properly. Sometimes defrosting your heat pump will solve the problem, but other times you may need to call a professional HVAC company for help.

Common Causes For Your Heat Pump To Freeze In The Summer

Even if it’s hot outside, it’s not uncommon for your heat pump to have ice build-up. There are many common causes for frozen heat pumps, but these are the most common.

Insufficient Air Flow

Take a look at your outdoor unit and make sure that there is nothing blocking it and cut back any weeds or grass growing too close to it. Debris and grass clippings can clog up your heat pump system can prevent air from flowing through the unit.

But more often than not, poor airflow issues are caused by dirty air filters. Your air filter should be changed every 90 days to maintain good air quality in your home. If you’ve noticed that you have a frozen heat pump, you could have a clogged air filter. Try changing your air filter to see if that helps prevent ice accumulation.

Dirty Evaporator Coil

Your heat pump works by using refrigerant to transfer heat out of your home in the summer months. If this coil becomes dirty it can impact the ability to cool your home. Every year, schedule your heat pump tune up with the team at Novak. We’ll clean your HVAC system to make sure its ready for spring, and that includes your heat pump’s evaporator coil. Scheduling this annual maintenance appointment will help prevent heat pump freezes from happening in order to prevent any unnecessary heat pump repair.

Low Refrigerant Levels

Refrigerant is a chemical that turns hot air into a liquid in order to transfer it out of your home. It should only be handled by a heating and cooling professional. Refrigerant is not like oil in your car, it does not need to be replaced or refilled regularly, unless there is a leak somewhere in your system. If you notice pools of liquid outside your outside unit when its frozen, its might not be melted water. Call Novak for heat pump repairs.

What To Do If Your Heat Pump Freezes?

If you’ve changed your air filter and your heat pump is still frozen, there are a few things you can do to try to thaw it out.

  • Shut off the heat pump: The refrigerant is what is causing your heat pump to accumulate ice. Shut off the heat pump and see if the warm temperatures help to melt the ice.
  • Turn on the fan: You can speed the process along by turning on the fan on the heat pump without it cooling your home. Check your thermostat to turn the fan on, and make sure the temperature is not set to cool.
  • Use Defrost Cycle: It’s not uncommon for heat pumps to gain ice on them during the cold months, and that’s why they have a defrost mode. You can also use the defrost mode to help melt the ice on your heat pump in the summer too.
  • Call an HVAC Company: If you’ve done all of these steps, and the ice hasn’t melted off in a few hours, or if the ice melts, but then reforms once you set your heat pump to cool again, then it’s time for some professional help. Contact the team at Novak to take a look at your heat pump to see what the problem is.

Call Novak To Fix Your Frozen Heat Pump

The heating and cooling professionals at Novak are experts at fixing heat pumps. Heat pump issues don’t just go away on their own, and ignoring them for too long can make issues worse. Novak offers 24 hours emergency service, so you aren’t without cool air on the hottest summer days. Call Novak today for help.