Philips 4200 Series Air Purifier AC4220/12, Dual NanoProtect+ HEPA Filter and Activated Carbon Filter, Clean Air Delivery Rate (CADR) 600m3/h for 156m2 area, quiet, smart, and energy-saving. 1- Huge power 2- Quadruple purification captures 99.99% of the smallest particles 3- Quiet even at maximum power 4- Captures 99.99% of dust allergens 5- Effectively reduces viruses from the air (Influenza) 6- Captures odors and gaseous pollutants (like kitchen food odors) 7- Lower energy consumption than a light bulb 8- Control it from anywhere using the Philips app 9- Filter lasts a full year I bought it from STC two months ago for 1650. It's considered new, with very little use. My price is 1450.