How does an air filtration system operate?
Air passes through a filter in the filtration system where the dirt, dust and allergens become trapped. Some air purification systems use a fan, which pulls the air through a filter attached to your forced-air HVAC system. Others, known as electrostatic precipitators, apply an electronic charge to the particles that are drawn into the device. The particles are then “captured” on plates with an opposite charge and are eliminated from the air.