I have qwned my Ionic Pro for three years and have only had a perfectly running air purifier; no complaints at all. I live off the interstate and have been amazed at all the black particles of soot from fuel emissions. When I have company that smokes there is never a tale- tell odor remaining and my blades show the smoke collected. When I return home from work I'm always greeted by the sent of freshness,,, close to my memories of the ancient ritual of sheets hung outside on the line to dry. I have a two bedroom apartment so one is sufficient to cover all areas. The directions state if it...review »