How Do Electrostatic Air Filters Clean the Air?
The Difference Between Electrostatic Filters and Ordinary Air Filters The most common type of home air filter is cheap, disposable and made from cardboard and a fiberglass mesh. These filters are installed in cold air returns and HVAC air vents, and as air blows through them and out into homes and offices, airborne particles of dust and allergens get trapped in the web of fiberglass while cleaner air passes through. Electrostatic filters, at first glance, look almost exactly like these disposable filters. But the key difference is that the filtration media in electrostatic filters is made of unique polyurethane and polypropylene blends. Unlike fiberglass media, these blends generate opposite charges of static electricity, which attract and hold airborne particles like a magnet. What Happens to Particles in an Electrostatic Air Filter When an electrostatic filter is installed in an HVAC system, air passes through it just like it would any other type of filter. But when air speeds past t
