Air is drawn into the unit to capture particles. The airborne particles pass through an electrostatic field and receive an ionized charge. The charged particles move into a collector section where each alternate plate is charged with the same polarity as the particles. This drives the particles to the second set of plates of an unlike charge to attract and collect the particles. The remaining air, cleaned up to 95% of its impurities, is then returned to the plant or building. Electrostatic systems contain permanent cells and are available with a manual or automatic wash system.

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Media air cleaners, whether free standing or directly mounted to machines, draw pollutants from the air through a first stage pre-filter to capture large particulate. This extends the life of the primary media filter, which uses a combination of technologies including straining, impaction, interception, and diffusion to strip submicron particles from the air. After adsorption filters may also be incorporated to eliminate or reduce odors.

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Contaminated air is drawn through high-efficiency cartridge filters, where the particulate is collected on the outside of the media. Filtered air is pulled through the system and exhausted. The filtered air then passes through the clean air plenum and is exhausted. The venturi pulse or patented Injection Self-Cleaning System (ICS) blows compressed air through the filter in the reverse direction, thus dislodging smoke and dust from the filter. The solid pollutants are then collected in a dust drawer or barrel for periodic disposal. This method allows for multiple loadings and unloadings on the filter media.

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