Types of Filters

Not all HVAC units are alike, so it stands to reason that not all units require the same type of air filter. The proper filter for your furnace will maximize the particles removed from the air and minimize the loss of efficiency. We have a quick primer on different types of air filters to get your search started.

HEPA Filter: HEPA filters are among the most efficient filters on the market. They operate at an efficiency rate of over 99 percent and remove almost all of the animal dander, mold spores, pollen, and dust mites that pass through heating and air conditioning units.
Charcoal Air Filter: Charcoal filter is the common term for an activated carbon filter. The activated carbon is extremely porous, which increases the ability of the filter to absorb particles. Charcoal filters are ideal for the removal of odors caused by tobacco smoke, chemicals, and gases.
Pleated Filter: The pleated furnace filter is a good option for efficiently removing particles from the air. The filter material is pleated, or folded, in order to increase its overall surface area and consequently trap more particles. The pleats will also increase the life of the filter.
Electrostatic Filter: Electrostatic filters are a great way to improve air quality without decreasing the efficiency of your heating unit. Air passing through the filter generates static electricity that collects the airborne particles. Since the filter material is relatively thin, airflow reduction caused by electrostatic filters is minimal.
Electronic Filters: Electronic filters operate much like the electrostatic filters. Instead of airflow generating the static electricity, the electronic fileter relies solely on electricity. Electronic filters have the same benefit of minimal reduction in airflow.
Metal Filters: Metal filters provide a convenient, cost-efficient option for homeowners. Metal frames are used to house disposable, highly efficient air filter media. Air filter media pads trap a great number of particles because of their thickness.