Brand new in the box latest technology atlas washable hepa filter air purifier This latest model atlas washable hepa filter air purifier covers up to 3500 sq ft of living space utilizing both activated oxygen and negative ions. The unit has a separate washable hepa and mesh metal filter This unit comes with 3 years of factory warranty This Air Purifier can oxidize the molecules which cause orders that contaminate indoor air and aggravate allergic reactions such as sneezing, sinus and ear irritations, asthma and itchy eyes by significantly reducing chemical gases, paint fumes, tobacco smoke, fungi and mold.