The award winning REME HALO® in-duct air purifier reduces odors and air pollutants by purifying every cubic inch of air that your central air conditioning system reaches. It is effective against all three categories of indoor air pollutants: Particulates, Microbial and Gases. You can now reduce common allergy triggers from particulates such as pollen, mold spores, dander and dust. Thoroughly tested to reduce airborne and surface bacteria & viruses, such as MRSA, e-coli, and Norwalk, to name a few. And, say goodbye to odors from cooking, pets, dirty socks, diaper, pails, and musty rooms. The REME HALO® is like bringing fresh outdoor aiir without ever having to open your windows.