Indoor air quality in today's "weather tight" homes, where airborne contaminants become easily trapped, can be five times more polluted than the air outside. Electronic Air Cleaners are considered the most effective way to clean household air. Air passes through a fine wire mesh directly placed behind the screen of these units, carrying a positive charge of high electrical voltage and attaching a positive charge to aggravating air contaminants. Opposing charges attract, so as the air travels through the unit the positively charged contaminants stick to negatively charged plates or grids deeper within, cleaning with high efficiency the air before it is finally passed into the household area. The electric current may also produce ozone which has anti-bacterial effects. We install Electronic Air Cleaners by HoneyWell.