Window air conditioning units provide a focused stream of cooled air to the room that they are installed in. However, because of constant use or high levels of humidity in the air, they can sometimes become covered in ice, which severely hampers their operation and restricts the amount of cool air that they produce. Thankfully, if your window air conditioner does become clogged with ice, there are a few things that you can do to get it working normally again and to prevent it from freezing again in the future.
How to Defrost a Window Air Conditioner
If you notice that there is a buildup of ice on your window air conditioner, the first thing that you should do is turn the unit off. This prevents the fan and any other moving parts within the unit from becoming damaged. Let the unit sit for a while to let the ice thaw, making sure to put down rags or a tray underneath the unit to catch dripping water.
Next, once the ice has begun to break up, turn the air conditioner's fan on. This will allow air to flow through the unit, speeding up the defrosting process and melting any remaining ice.
Once all of the ice has been melted, you'll want to remove the front panel of your unit. This can be done usually by hand, but sometimes will require the use of a screwdriver. Then, pull out the air filter, which should be in the casing immediately behind the front panel. A clogged air filter will prevent cold air from leaving the air conditioner, which in turn freezes the moisture inside the unit.
You'll want to clean out the air filter using warm soapy water to remove all dust and debris which may be stuck in it. Allow the filter to air dry completely before reinstalling it into the unit: any sort of remaining moisture could cause further ice buildup, or even contribute to mold growth. Once the filter is back in, you can then reattach the front panel.
You'll also want to visually inspect the vents on the side or top of the unit for any sort of obstruction: dust and dirt can be removed with a brush or cloth, and will allow for even greater air flow within the unit.
Now you can turn the air conditioner back on. It may be a good idea to lower the temperature on the unit to help prevent further freezing.
For assistance, talk to a company like Seliga Heating and Cooling.