Electrostatic air cleaners (sometimes known as electrostatic precipitators) are highly efficient filtration devices that use electrostatic attraction to remove fine particulate matter such as dust and cigarette smoke from the air. Electrostatic air cleaners ionize (or electrically charge) particles as incoming air is drawn over an electronic cell. The charged particles are then attracted to and trapped by a series of flat collector plates that are oppositely charged, with the particles literally “sticking” to the collection plates until they are manually removed.

Electrostatic filter is an indoor air purification equipment developed on the basis of industrial electrostatic precipitator. It has been widely used in various indoor occasions, especially in ducted air conditioning and fresh air purification systems. It has become one of the most commonly used air purification equipment. Similar to filtering air purification equipment, electrostatic filters remove particles as small as 0.01 microns in the air.

The main features of electrostatic filters are high filtration efficiency, low air resistance and low power consumption.