UVC devices attack organic buildup in coils, keeping coils continuously clean. This lowers HVAC energy costs by improving heat transfer and increasing net cooling capacity. Bioaerosol-related allergies have shown reduction or elimination when UVC is used in HVAC equipment. UVC has been shown to kill more than 99% of all airborne microorganisms.

UVC fixtures do not replace filters are used in combination with other air conditioning components. Filters remove some microorganisms however in an infectious disease application the efficiency of a filter is questionable. The filter goal is to provide a reduction in the total number of microbes. However, viruses can be as small as 0.02 micron so filters do not always produce an acceptable result. More importantly, filters do not eliminate microbial growth on coils, in drain pans or in plenums and ductwork. Antimicrobial treated filters rely on direct contact to kill the microbes. As the filter builds a layer of dirt on it, this direct contact is eliminated and the microorganisms will not be affected by the chemical treatment. Therefore treated filters will not eliminate growth on coils and the subsequent contamination of the breathing zone by biocontaminants.

Key markets for UVC devices are the residential, commercial, industrial, processing, medical, and institutional sectors.  UVC Emitters continuously clean coils, drain pans, plenums and ducts; and improve product quality, shelf-life and yield in processing plants but do not produce ozone or other secondary contaminants.

In commercial, industrial or institutional buildings, a typical UVC installation can pay for itself in a matter of months and save thousands of dollars in energy and maintenance costs. This is possible because UVC emitters continually clean coils, drain pans, plenums and ducts, reducing or eliminating costly cleaning programs. HVAC energy costs are lowered by improving heat transfer and increasing net cooling capacity. General IAQ is improved for better productivity and less absenteeism.

Most UVC fixtures are designed specifically for installation in HVACR applications. On existing systems, the best results are obtained when the emitter assembly is located downstream of and facing the coil. In this location the user can expect the highest effectiveness in eliminating surface, drain pan and airborne microbes. On new systems, it can be placed either up or downstream of the coil and aimed at the coil.