Electrostatic Air Filters

Written by Norene Anderson
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Electrostatic air filters were introduced in the late 1970s. The technology to clear the air of dust and other pollutants was a welcome relief for the millions of people suffering from allergies. Electrostatic filters work by attracting and holding the particles until the filter is removed and replaced. It requires attention to the amount of dust residue collecting to keep it working at optimal levels.

Permanently charged electrostatic air filters are a great way to cleanse the two gallons of air breathed every minute. The static charge works like a magnet by attracting particles of algae spores, lint, pet dander, pollen, smoke, and other irritants. The most important thing to remember in using this type of filter is the routine replacement. Even if it does not appear to be dirty, it should be changed at least monthly. This keeps the air flowing freely through the pores of the filter.

Electrostatic Air Filters Clear the Air

Electrostatic air filters are designed to replace any disposable filter in air conditioning and heating units. Some filters are reusable and you are never quite sure they are as clean as they should be to do the work efficiently. With replaceable air filters that are electrostatic, you can always be certain the air in your home is as clean as possible.

Before buying an electrostatic filter, check out the MERV rating that is assigned by ASHRAE. This will let you know how much you can expect from the filter. ASHRAE has a standard test for determining the efficiency of any filtering system and assigns a MERV rating based on the results of the testing procedure. The higher the rating, the cleaner the air will be with the appropriate use of the filter.


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