Another extremely 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 4 primary 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 really irritating to allergy sufferers, and anyone else who is sensitive to dust. The filter also prevents the evaporator coil from becoming clogged with dust, and reducing the efficiency of the equipment http://bjrefrigeration.com/heating-repair.html .
This evaporator coil is very similar to the radiator in a car. Like your car radiator, it will not be able to do its job without appropriate air flow. The reason Im comparing it to an auto radiator is due to the fact that many of us understand exactly what a radiator does, however, an evaporator coil works to cool air as it passes through.
It could take months or even years for dust to accumulate on the fins of the evaporator coil. If your air conditioner is serviced routinely, 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, due to the fact that the air conditioning unit will perform at a higher efficiency.