Electrostatic Filters

Electrostatic Filters

Electrostatic filters work by charging the dust particles in the air, which attracts them to the metal plates in the filter. They utilize synthetic material which develops an electrostatic charge as friction, provided by air flowing through the filter, is applied to the plastic fibers. The electrostatic charge that is developed as air passes through the filter increases the filter's attraction to particles such as bacteria, pollen, molds, and dust.

An electrostatic filter is generally effective in capturing particles 1 micron and larger, including dust, lint, animal dander, pollen, mold spores, and skin flakes. In fact, allergists recommend using electrostatic air filters for better dust control. In general, electrostatic filters have a higher capturing rate of particles than throw-away filters, typically blocking between 10 percent and 35 percent of microscopic particles.

Due to the filter's low resistance to airflow, it is compatible with all air handling systems. While electrostatic filters do need to be replaced periodically, they are reusable and cleaning them simply requires hosing them out. Some electrostatic filters are sold as kits; the frame is permanent and the filter pad is replaced every couple of years.