for proper operation and air quality
An air conditioner’s filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases.
Air Conditioner Filters
The most important maintenance task that will ensure the efficiency of your air conditioner is to routinely replace or clean its filters. Clogged, dirty filters block normal air flow and reduce a system’s efficiency significantly. With normal airflow obstructed, air that bypasses the filter may carry dirt directly into the evaporator coil and impair the coil’s heat-absorbing capacity.
Air Conditioner Coils
The air conditioner coil and condenser coil collect dirt over their months and years of service. A clean filter prevents the evaporator coil from soiling quickly. In time, however, the evaporator coil will still collect dirt. This dirt reduces air flow and insulates the coil which reduces its ability to absorb heat, Therefore, your evaporator coil should be checked every year and cleaned as necessary. Outdoor condenser coils can also become very dirty if the outdoor environment is dusty or if there is foliage nearby.
Regular maintenance will keep your air conditioner or heat pump running efficiently, extending its life and helping you get the most out of your investment. Just like maintaining a car, if you properly maintain your heat pump or air conditioner, you will reduce the risk of unexpected, costly repairs or replacement.
~ APS Consumers’ Guide
APS also says to have your system professionally maintained regularly, such as every six months or before the summer and winter seasons – replace or clean air filters once a month.