The Air-Care Electrostatic Air Filter cleans the air by using static electricity - a safe, naturally occurring phenomenon. An electrostatic charge is generated by air flowing through a maze of static prone fibers contained inside the air filter. Airborne particles are attracted and held by the static charge inside the air filter until released by washing. The electrostatic air filter never needs replacing, making it a purchase that will last a lifetime. It provides you with cleaner air to breathe without harmful ozone emissions. The filter reduces pollen, dust and airborne pollutants in the air around you at a reasonable price.