The ability of ultraviolet light to slash 10 to 35 percent of HVAC energy use drives nine of every 10 UV-C installations today. By eliminating accumulated organic materials and biofilm growth in commercial air handlers, the use of UV-C significantly improves airflow and heat-exchange efficiency levels, which can not only reduce energy use, but also decrease system maintenance costs and provide cleaner, healthier air.
The ultraviolet-C (UV-C) wavelength (254nm) was promoted in the mid-1990s primarily to improve indoor air quality by preventing microbial buildup on HVAC cooling coils, air filters, and duct surfaces, and in drain pans.