Philips Series 2000 with Vitashield IPS and Aerasense Technology removes 99.97% ultrafines particles as small as 0.003 microns, removes 99.9% H1N1 virus and bacteria. It has a professional grade sensor that scans pollutants in the air 1000 times per second. It has a CADR of 330m3/hour and has a washable pre-filter, HEPA filter and activated carbon filter. It has a coverage area of 420 sqft, comes with Alexa and Siri support and 2 year warranty.