How to Fix Freezing Evaporator Coil? It can be very frustrating when your aircon stops working properly when it is too hot outside your home. It can be due to the freezing of the evaporator coil. When there is ice on the coil of the evaporator then it can be taken as an indication that something bad can happen to your air conditioner shortly. You may have to bear huge financial problems if you do not fix the problem as soon as possible. But to fix the problem you must know the causes behind it.
How to Fix Freezing Evaporator Coil?
Signs to know whether your evaporator coil is frozen
The coil of your aircon evaporator can freeze if:
- There is ice around the line of refrigerant in the outdoor unit
- There are moisture and condensation on the air handler of your unit
- The pan to drain condensate is overflowing or full due to clogging of the drain
- There is condensation or ice on the evaporator coil
If any of these symptoms are noticed then you should immediately take the necessary action as it is not good for your aircon. While inspecting the air conditioner to find out the cause of freezing evaporator coil you should first of all switch it off to avoid any unwanted situation and let the coil defrost when you are inspecting the unit and fixing the problem.
How to Fix Freezing Evaporator Coil?-
Evaporator coils are dirty
If the coils of the evaporator of your aircon are covered with dirt and dust build-ups then it will have to work hard to cool down your internal air. It will have to work more to transfer refrigerant to the heat pump which can increase the risk of freezing coils.
How to fix it?
This problem can be fixed by cleaning the evaporator coils of an indoor air handler yourself regularly by using proper tools and equipment or scheduling the annual maintenance service from a professional HVAC service. It will allow the coils to absorb the heat properly by de-freezing the coils.
The problem in the refrigerant level
The evaporator coil of your aircon can be freezing if its refrigerant runs in a closed unit due to leakage in your system. Though leakage of refrigerant is a common phenomenon it can cause problems if not noticed for a long time. The ice can build up on your evaporator coil if your aircon runs with a low level of refrigerant.
How to fix it?
This problem cannot be fixed through DIY methods so you should call the professional service to fix the problem as soon as possible. He will check the level of refrigerant in your air conditioner and refill it to restore the level of refrigerant in your aircon.
The problem in the flow of air
If the flow of air from the blower of your air conditioner is not proper even then your evaporator coil will be freezing. It can happen due to several reasons including dirty air filter, improper size of the filter, damaged or underside duct, dirty air handler, and heat pump, closed vents or blocked return grills or improper working of the blower motor.
How to fix it?
This problem can be fixed by cleaning, repairing or maintaining some of the parts or replacing the air filters of your aircon so that the flow of air can be restored properly. Some of these tasks can be done DIY like cleaning or replacement of air filter etc. You should clean or replace the air filter after every 25-30 days during peak hot season to ensure proper flow of air from the blower of your air conditioner. You can check whether the air filter is clean or not by seeing light through it. If you cannot see light through it then you should clean or replace it immediately.
You can also check the return and supply vents and registers to ensure the proper flow of air in your system. People usually close the vents in the rooms that are not in use to save money, but it is a misconception. Actually, you should unblock all the vents in your home to ensure the proper flow of air by the blower. They should not be blocked by some heavy drapes, furniture or underneath rugs.
Thus there can be several reasons for freezing evaporator coil in your aircon. You can fix them easily either DIY or through a professional service to ensure proper cooling in your home.