When you live in a place that has extreme heat you are sure to start using your air conditioner sooner than in other areas of the country. When the summer is in full swing, the last thing you want is to have the unit stop working. You may think that the air conditioner has quit working for good and needs to be replaced but it could be something different that can be fixed with a minor repairs or fixes. One of the major problems that happen with an air conditioning unit is that it can freeze up. When the unit freezes up it will stop working and your house will end up hot and uncomfortable.
Air Supply Heating & Air Conditioning lists the reasons that your air conditioning unit will freeze up in the summer.
Air Conditioner Refrigerant Can Be Leaking: Your air conditioning unit needs to use a chemical refrigerant that is used to remove the heated air and cool down the air. The amount of refrigerant can leak out if there is a break in the line and that can cause the unit to freeze up. If there is not enough refrigerant moving through the lines it will start to back up. It will then lead the to the lines freezing up and that will then stop the unit from working correctly and your house will heat up! This is not what you want in the middle of the summer. If you have a leak or you are low on refrigerant it can be repaired by having a professional come out and repair the line and re-charge the refrigerant.
Blocked Air Flow: The air from the air conditioner is pushed through your home through a series of duct work. The duct work is attached to the unit and through a filter area that is called the return air. The air is sent through a removable filter that needs to be replaced ion a regular basis. If it is not done, the debris and dust can start to build up and in turn will diminish the air flow to the home. This can actually lead to the unit freezing up. When the air stops flowing it can cause condensation to build up on the lines and the unit. When the lines has condensation it will start to freeze. You can fix the issue by keeping track of your filters and how often you replace them. Be sure to use the right size filter and change them often to ensure that the air is able to flow.