Honeywell's UV Air Purifier with AirBRIGHT Odor Absorption is installed in the ductwork of your central air system and is designed to help reduce airborne odors, toxic chemical vapors, germs and mold in your home. Through the use of Advanced Photocatalytic Oxidation (PCO) technology, Honeywell's UV Air Purifier combines germicidal UV light and activated carbon cells to reduce volatile organic compounds (VOC's) in the air.