Another extremely important job that your air conditioning unit filter does is helps to keep dust from collecting on the evaporator coil of your a/c system. It is found inside the air handler, and is one of the four primary components of any a/c system. The air filter is usually found somewhere just before the evaporator coil.
Any dust that goes through the filter ends up back in your home, and can be very aggravating to allergy sufferers, and anybody else who is sensitive to dust. The filter also prevents the evaporator coil from becoming obstructed with dust, and reducing the efficiency of the equipment.
This evaporator coil is very similar to the radiator in an auto. Like your automobile radiator, it will not be able to do its job without proper air flow. The reason Im comparing it to a vehicle radiator is due to the fact that many of us know exactly what a radiator does, however, an evaporator coil works to cool air as it passes through Read More About It .
It can take months or even years for dust to gather on the fins of the evaporator coil. If your air conditioning unit is serviced routinely, the technician will inspect this and tell you when it has to be cleaned. If this is not done, it will lead to expensive repairs.
So the advantages of an effective air conditioning unit filter would not only be cleaner air, but also save you money, due to the fact that the air conditioning unit will perform at a higher efficiency.