Filtration alone is not enough to protect people from exposure to airborne viruses. Nor does it prevent biofilm from growing on coils. When you combine proper HVAC filtration with other best practices, such as UVGI, you can reduce the potential for airborne transmission of indoor air pathogens in your HVAC system.
Surface Disinfection in Commercial Air Systems
Treating HVAC systems with UVGI keeps the coils, drain pans, and wet surfaces of your systems clear of microbial growth, which can significantly reduce energy efficiency. Such devices emit relatively low levels of UV energy that is continuously delivered 24 hours a day, making them a practical application.
UV-C disinfection of cooling coils is so effective that payback periods of 2 to 3 years are expected.
Air Disinfection in Commercial Air Systems
UVGI systems designed for air disinfection apply a more intense level of UV energy to inactive airborne pathogens as they move through your HVAC ducts. HVAC air disinfection systems usually require more power and more lamps (or both) to effectively inactive pathogens within a short period of time.
These types of systems are placed downstream of your coils to keep surfaces free of microbial growth while simultaneously disinfecting moving air.