Blueair Sense+ Air Purifier, HEPASilent Technology Particle and Odor Remover, Graphite Black True HEPA performance, enabled by HEPASilent technology with particle filter and electrostatic charge, captures 99.97% of airborne pollutants; allergens, mold, dust, pet dander, smoke particles and pollen. Filtration also includes Activated Carbon to remoe odors, smoke and other VOCs. Smart home unit, Wi Fi enabled with free Blueair Friend app. Compatible with Alexa / Echo and touchless controls Completely cleans a 186 sq. Ft. Room's air 5 times an hour and 2.5 times an hour for a 372 sq. Ft. Room. (Based on 8 ft. Ceilings) Revolutionary combination of advanced filter media and an encapsulated particle-charging chamber delivers results far superior than either Mechanical or electrostatic technology alone For small to medium rooms between 100 sq. ft. and 200 sq. ft., AHAM rated at 186 sq. ft.