Purify the air in your home or office with the RGF REME Halo in-duct ultraviolet air purifier. Featuring ultraviolet light technology, this powerful purifier kills dust, particulates and bacteria as the air passes through your HVAC system. The UV light works by disrupting the DNA of microbes, rendering them harmless. An energy-efficient solution, the REME Halo helps create a cleaner and healthier indoor environment by reducing allergens, odors, volatile organic compounds and other pollutants in the air. Installation is simple - the unit mounts directly into your existing HVAC ductwork. With no filters to change or chemicals to use.