Help protect your air and the environment As the leader in innovative solutions to indoor air quality problems, it s no surprise that RGF has taken air purification to the next level. The HALO-LED Whole Home In-Duct Air Purifier uses our new revolutionary REME-LED technology to help protect the air for you and your family. REME-LED provides a longer product life with improved energy efficiency, zero ozone creation and no mercury (sometimes found in traditional UV lamps). You get proactive air treatment in your home combining low levels of airborne hydrogen peroxide with ionization to reduce viruses, bacteria, mold spores, dust, dander and pollen. The difference is we now use a revolutionary, energy efficient UV-C LED that turns on and off with your blower and a new washable hybrid ceramic catalyst.