How to Troubleshoot Frozen Heat Pump Coils
A heat pump is a multipurpose tool that can save money because it acts as both a heater and an air conditioner throughout the year. However, as with traditional heating and cooling systems, it can fall victim to frozen coils. The good news is that quick action can help you remedy the problem in a timely and affordable manner.
The Signs of a Frozen Coil
There are a few telltale signs of coils that have frozen over such as a lack of cold air coming from the pump during the summer months. You may also notice that it is only blowing warm air when you need it to deliver conditioned air. It’s also possible that you’ll see excess condensation or moisture around the pan near the condenser unit. Finally, you may actually see that refrigerant lines are frozen or that they have ice building up around them.
Make Sure to Change the Air Filter
One of the common causes of a frozen evaporator or condenser coil is a dirty air filter. Over time, it will collect more pollen, dirt or other particles than it can effectively trap. Therefore, particles will freely get into the coils, which can cause an airflow issue.
This means that your first step should be to check or change your air filter to determine if it’s in good condition. If it is full of dust or pollen, change it immediately. In most cases, it only costs a few dollars and takes a few seconds of your time to make the change without the need to call for a professional.
Check for Blocked Vents or Dirty Coils
A dirty air filter can result in a vent that is clogged with material or a coil that is unable to operate properly. If air is not able to flow over the coil, it cannot adequately process the refrigerant used to help condition the air that gets into your house during the summer months.
A blocked vent will also result in improper airflow, which can increase the risk of a frozen coil. It’s important to note that solid debris, a rodent nest or similar objects may also cause a blocked vent. Therefore, you may want to do a thorough inspection even if a vent seems to be free of any obvious obstruction.
Do Not Run a Heat Pump When the Coils are Frozen
It’s important to turn off your heat pump when it is dealing with a frozen coil. Allowing it to keep running can lead to significant damage as it can’t shut itself off because it won’t get the home down to your desired temperature.
Instead, you should turn it off and call a professional such as those from Miami One Hour for help. In some cases, simply turning it off will provide enough time for the coil to defrost in the warm Miami sun.
However, you don’t want to assume that the problem is fixed without a professional taking a look. In some cases, the issue is caused by a refrigerant leak or a faulty thermostat. In either scenario, you probably won’t be able to fix the issue or do so properly on your own.
If you are in need of assistance with a faulty heat pump, call the team at Miami One Hour today. Remember, we promise to be on time or you don’t pay a dime for our services. Therefore, you can feel good that we will show up at your house promptly and provide quality service to make sure your systems keeps running strong for years to come.
FAQ
Why do heat pump coils freeze?
Frozen coils are usually caused by restricted airflow, dirty air filters, blocked vents, dirty coils, low refrigerant levels, or thermostat issues. When airflow is reduced, moisture can build up and freeze on the coils.
Will changing the air filter help fix frozen coils?
Yes. A dirty air filter is one of the most common causes of frozen coils because it restricts airflow. Replacing the filter is often a quick and affordable first step.
How do I know if my heat pump coils are frozen?
Common signs include weak airflow, warm air coming from vents when cooling is needed, visible ice on refrigerant lines, or excess moisture around the outdoor unit.
When should I call an HVAC professional?
If the coils continue to freeze after changing the air filter and checking vents, you should contact an HVAC technician. Issues like refrigerant leaks, faulty thermostats, or damaged components require professional repair.
