Creating safe environments for work, schools, businesses and other gathering spaces is paramount moving forward. At DAC, we are looking at the best ways that HVAC systems can protect occupants. Our first recommendation is to install Needlepoint Bipolar Ionization. We have dedicated this issue of Fresh Air to the education of our customers on all aspects of Bipolar Ionization. We have worked with most types of HVAC purification and find this technology to be most effective in handling any pathogens.