The RHO2 is a compact and power-efficient, five-stage filtration system equipped to rid the air of odors, bacteria, allergens, and dust. The RHO2 oxidizes the air with its onboard ozone plates and negative ion generator to significantly reduce chemical gases, paint fumes, smoke and bacteria particles in the air by decomposing and eradicating contaminants.The UV light and photocatalytic filter work together to neutralize molecules organic particles in the air which cause odors or could contaminate indoor air and aggravate allergies. This compact and portable unit with its five-stage filtration system helps kill bacteria with a UV light and a top-of-the-line HEPA filter that will eliminate pollen, bacteria, and create clean breathable air within a 3,500 sq ft area. It also comes with a washable HEPA filter for your convenience.