The Reasons Air Conditioners Freeze During The Summer Months

The Summer Heat

Most people enjoy relaxing in a nice, cool home in the summer. Those hot days look a lot better when relaxing in a comfortable chair with a cool drink. Unfortunately when the air conditioner freezes this ideal picture is destroyed.

The Air Conditioning Unit

An air conditioning unit works because the evaporator coil expands. This causes the coil to cool rapidly. When this coil is exposed to the air in the home the hot air is absorbed by the refrigerant. The heated refrigerant is compressed outside of the home where the heat shifts to the outside atmosphere. When the coil cools more than it is supposed to the process changes and the air condition will probably freeze.

The Insufficient Air Flow

One of the most common causes for an air conditioner freezing is there is an insufficient flow of air across the evaporator. This will cause the coil to freeze. When there is no air being blown across the evaporator coil the heat transfer is prevented. This means the warm air is not being removed by the refrigerant. It is important to contact an experienced professional such as Rusk Heating & Cooling for any necessary repairs.

The Low Refrigerant

When the refrigerant level is too low the air conditioner will freeze. This is because there is not enough pressure within the system. Despite the lack of refrigerant, the unit is expending the same amount of refrigerant. This can cause the temperature of the evaporator coil to drop below freezing. When the humidity present in the air makes contact with the coil it can ice up. This will cause the unit to freeze.

The Mechanical Failure

If the pressure of the system is altered the air conditioner will freeze. This can be caused by a clogged filter drier, dirty coils, a malfunctioning blower fan or twisted refrigerant lines. Additional causes include poor maintenance on the unit, leaves gathering within the unit from trees and dust storms.

The Professional

When an air conditioner freezes the best possible solution is to call a professional. Rusk Heating & Cooling are experts at repairing air conditioning units. Do not suffer in the heat. Pick up the phone or visit as soon as possible.