THT-EX Hazardous Area HVAC UVC Air Disinfection System UVC Performance Is Not Just About Wattage In the post-pandemic era, effective indoor air management requires more than increased ventilation and upgraded filtration. It also requires a measurable and application-specific treatment strategy within the HVAC system. Different bacteria, viruses and spores require different accumulated UVC doses for inactivation. Germicidal performance is determined by: UVC Dose = Delivered Ir