Why is HEPA filtration required during construction and renovation projects?
According to the latest 2003 CDC Guidelines for Environmental Infection Control in Health-Care Facilities, HEPA filtration is required for the capture of microbial spores and other contaminants that can potentially cause fungal infections and Aspergillosis. Airborne bacteria and fungi are typically 3 microns (0.0001″) and smaller in size, small enough to easily pass through most filters. Air filtration devices must therefore be equipped with true HEPA (High Efficiency Particulate Air) filters, designed to capture at least 99.97% (9,997 out of 10,000) particles as small as 0.3 microns (0.00001″) in size.
