The air filter in your heating and cooling system works quietly to remove dirt and debris from the air as it passes through your system. This not only reduces the amount of airborne contaminants in your home and improves your indoor air quality, but it also protects your expensive heating and cooling system. By removing dust, dirt, and debris from the air, your air filter keeps your evaporator coil and other components free of contaminants. When a layer of dust and grime accumulates on your evaporator coil, heat transfer efficiency is reduced and as a result, your HVAC system operating efficiency is reduced.
It is critical for peak heating and cooling performance to change your air filter regularly. A clogged air filter makes the system work harder and shortens its lifespan. Experts recommend changing the air filter every two to three months. During periods of heavy usage, the air filter should be changed more often. Changing the air filter is an important part of regular HVAC system maintenance.
There are several different types of furnace filters readily available at your local home improvement center. Standard fiberglass filters are inexpensive, but only catch larger particles of dirt, dust, pet hair, and lint. A pleated filter is a better option. These cost a little more, but they are much better at capturing smaller airborne particles. Since pleated filters capture more dirt and debris, they need to be changed more frequently as they will clog sooner than a standard filter.
When buying a new furnace filter, look for a medium efficiency filter that is the right size for your HVAC system. Filters with a very high efficiency rating can reduce the air flow through your system causing a drop in efficiency.
