William P. Bahnfleth, Ph.D., P.E., Fellow/Presidential Member ASHRAE, is a professor in the Department of Architectural Engineering at The Pennsylvania State University—University Park, PA. He holds a doctorate in Mechanical Engineering from the University of Illinois and is a registered professional engineer. He is a Fellow of ASHRAE, the American Society of Mechanical Engineers, and the International Society for Indoor Air Quality and Climate. Dr. Bahnfleth is the author or co-author of more than 170 journal articles and 14 books/book chapters. He has served ASHRAE in a variety of capacities, including Student Branch Advisor, Chapter Governor, Technical Committee and Standing Committee Chair, Director-at-Large, Vice President, Treasurer, and 2013-14 Society President. He is the chair of the ASHRAE Epidemic Task Force. His ASHRAE awards include the Exceptional Service Award, the Louise and Bill Holladay Distinguished Fellow Award, the E.K. Campbell Award of Merit for teaching, and the F. Paul Anderson Award, ASHRAE’s highest individual award.