The first thing you should know about ultraviolet lighting in duct systems is that it is NOT a substitute for duct cleaning. And, despite studies showing UV’s effectiveness in killing COVID-19, it is not a cure all for indoor air quality. There are a lot of factors that come into play when talking about UV’s relationship with killing airborne pathogens and allergens in HVAC systems. Knowing fact from fiction will serve you well in providing the right solution for the building owner’s needs.
I. There are three types of UV light: UVA, UVB, and UVC, each representing a different section of the UV light spectrum. Type C, known as UVC, is the form used for germicidal activity.