A common problem people experience with central air conditioners is frozen coils in the units. If your air conditioner is not cooling your house properly or at all, you should take a look at the unit. If you see ice anywhere on the system, it is likely that your system has frozen coils. This can happen for several different reasons, but it is something an air conditioning repair company can fix rather easily. Here are the top causes of ice developing on the coils of an AC system.
Dirty Furnace Filter
For your AC system to cool air, several key things must happen, and one of the things is that it must pull in air to cool. The air the device pulls in must first travel through your furnace filter. The filter cleans the air, which helps keep dust out of your home and out of the system. After that, the air goes into the AC system and heat is extracted from the air. The cold air produced is then forced into your home through the ductwork.
If your furnace filter is really dirty, this process can be interrupted. A dirty filter will prevent a sufficient amount of air from coming through the filter and into the system. Without enough air, the system cannot warm up, and this is one main cause of icy coils.
Other Blockage In The System
A dirty air filter will reduce and restrict airflow to an AC system, but this is not the only thing that can do that. If there is any type of obstruction in the system that is stopping air from getting into it, the same result can happen. One common type of blockage involves clogged return air ducts.
A return air duct is a register vent that is normally located on a ceiling or near the top of a wall. As air is forced into the rooms through the register vents on the floor, the air that is already in the room will be pushed through the return air ducts. This air is what will eventually make its way through the furnace filter and into the air conditioning system. If the return vents are clogged, air cannot get through them and back to the system, and this can cause ice to form on the coils.
Low Coolant In The System
Another reason you may find ice on your coils is from low coolant in the system. When there is not enough coolant in an AC system, it cannot absorb enough of the heat that is required. Without absorbing this heat, the coils will start to get too cold. If this continues to happen for hours, ice will begin forming on the coils, and your system might not be able to produce any cold air until the ice melts from the coils.
What You Can Do
If you look at the system and see ice, you can be certain that the ice is probably the result of one of these three things. To get the problem fixed, you will need to contact an air conditioning repair company. They will come out and examine the system, and they will probably look first at the things listed here. If the problem is not the result of one of these reasons, they will continue examining other parts of the system to find out why this is happening.
Staying cool in the summer is hard to do if your air conditioner is not working well. If you are experiencing any problems with your system, contact a company that specializes in air conditioning services and repairs in your city, like Metro Air.