Heaven Fresh Naturo Pure TM HF290 Air Purifier helps you breathe with the purest air possible. From dust, pollen, pet dander, to mould it helps to eliminate virtually all impurities. The carbon pre- filter removes larger dust particles & light odors to freshen up your room.HF 290 features easy to use control panel & electronics controls to ensure simple navigation of settings. Smart sensors monitor the filter condition & indicate when to clean filters. Enjoy years of worry free operation with our comprehensive 3 year of warranty.