Why Does An Air Conditioner Freeze?

One of the strangest sights you may ever see is the coils on your air conditioner caked in ice on a hot day. Homeowners in Liburn GA have been known to experience this problem with their AC units. This phenomenon is known as “air conditioner freeze-up” and the problem may occur for several reasons. Fortunately, if you attend to the matter as soon as you notice ice or frost on your AC unit, you can resolve the situation and save yourself in future AC repair costs.

The first thing to do if you notice ice on your AC unit is to turn the unit off. Keep the unit off for a few hours and allow the unit to completely defrost. Once your unit has thawed out, check a few things with your system to ensure that your unit is getting the inflow of air that it requires.

Insufficient Air Flow

One reason for AC freeze-up is that the air flow coming into or out of your system is blocked at some point. The AC unit operates on the premise that free flowing air passes through the system and is cooled by the unit. The cooled air is then blown out into your living space.

There are several ways the air flow may be blocked to your AC unit. An intake register may be blocked, preventing the intake of air into your system. Your ductwork may be dirty or blocked, preventing the air from flowing through the ducts. Your AC filter may be extremely clogged, preventing air from coming in through the intake register. Check the central air intake register and make sure that air is efficiently flowing into your system. Change or clean your AC filter. Clear all possible blockages and then after your AC unit has defrosted, turn the unit on once again and monitor the system to make sure it does not freeze up again.

Low on Refrigerant

Another reason your air conditioner may be freezing up is that the unit is low on refrigerant. Refrigerant is necessary to cool the air and keep your home comfortable. Sometimes, your system’s lines may develop a leak and refrigerant may escape. One symptom that may develop from low refrigerant levels is AC freeze-up. Your HVAC technician will check the refrigerant levels during a regular maintenance tune-up. However, if your system is leaking refrigerant, the technician will also determine why. The technician will locate and repair any leaks in the refrigerant lines.

Regular Maintenance

The best way to ensure that your AC system does not freeze is to have your unit regularly tuned up by a qualified AC repair specialist. AirMaster Heating and Air provides regular maintenance tune-ups for customers in the Liburn GA area. The technician will inspect and tune your system to ensure that your refrigerant level is sufficient and the air flow is optimal, keeping your home cool and your unit working well. Call AirMaster Heating and Air if you need additional assistance with your AC unit freezing up.


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