Ultraviolet C-band (UVC) lights, used in many HVAC systems for IAQ and infectious disease control, are now becoming popular for another timely application: duct and other surface cleaning.
This trend follows on the heels of an open letter released by the U.S. Environmental Protection Agency (EPA) in mid-March. In the letter, the EPA issued strong cautions about the use of disinfectants, sanitizers, and other types of antimicrobials for duct cleaning and other surface treatments in HVAC systems. The announcement left contractors and building owners scrambling for alternatives.