Another very important job that your air conditioner filter does is helps to keep dust from collecting on the evaporator coil of your a/c system. It is located inside the air handler, and is one of the four major parts of any a/c system. The air filter is usually located somewhere just before the evaporator coil.
Any dust that travels through the filter ends up back in your home, and can be very irritating to allergy sufferers, and anybody else who is sensitive to dust. The filter also prevents the evaporator coil from becoming obstructed with dust, and decreasing the efficiency of the equipment.
This evaporator coil is extremely similar to the radiator in an auto. Like your car radiator, it will not have the ability to do its job without proper airflow. The reason Im comparing it to a vehicle radiator is due to the fact that many of us know what a radiator does, but, an evaporator coil works to cool air as it passes through.
It could take months or even years for dust to build up on the fins of the evaporator coil Read More About It . If your air conditioner is serviced regularly, the technician will check this and inform you when it should be cleaned. If this is not done, it will result in costly repairs.
So the perks of an efficient air conditioner filter would not only be cleaner air, but also save you money, since the air conditioning unit will work at a higher efficiency.