The units charge particles in a room, and the charged particles are attracted to solid surfaces such as walls, floors, tabletops, draperies, and even people. Some units come equipped with a collector plate that draws the charged particles back to the unit. Ionizer units are available in portable models only. Electrostatic Precipitators Electrostatic precipitators are the most common air cleaners used. The units are particularly effective when placed in your home's ductwork.
Ozone is a toxic gas and a component of smog with no known beneficial health effects.
Other models, however, are specifically designed to produce ozone as a method of cleaning the air. These units produce high levels of ozone and are not recommended by some experts. An additional method of electrical attraction is available through hybrid filters. Hybrid filters combine the properties of mechanical and electronic filters into charged media filters called electrets. Electrets are filters that have a special fibrous material embedded with a permanent electrostatic charge to help capture airborne particles.