Pure Home; Healthy Home – for a cleaner, healthier environment.™ Sleek, stylish and highly effective, Therapure® permanent HEPA air cleaners remove allergens, pollution, smoke and odors. The UV light kills airborne germs and bacteria while the photocatalyst filter removes harmful fumes and chemicals. Ionizer, with separate on/off button, delivers an extra cleaning boost when needed. Convenient clean-light indicator illuminates when filter maintenance is required. Three-speed fan. Forever filter (never needs replacing). Energy Star Certified. Air Cleaner Machine Type: HEPA; CADR: 155 (smoke); 137 (dust); 132 (pollen); Maximum Room Size (Square Footage): 221 sq ft; Maximum Room Size: 15 ft x 14ft.