The Ionic Pro Platinum starts by creating negative ions & releasing them in the air. Negative ions have long been shown to have a positive effect of mood & overall health. Those feel-good ions also adhere themselves to the pollutions, germs, allergens, & then are attracted to the permanent filter plates in the unit & are trapped. This makes cleaning the filter as easy as a rinse in the sink or a cycle in the dishwasher. Air Cleaner Machine Type: Ionic; CADR: 107 (Dust); 116 (Pollen); 107 (Smoke); Maximum Room Size (Square Footage): 600 sq ft; Maximum Room Size: Large.