William “Bill” Bahnfleth, PhD, PE

Professor, Architectural Engineering, The Pennsylvania State University

Bill Bahnfleth is a professor of architectural engineering at the Pennsylvania State University in University Park, PA. Previously, he was a Senior Consultant with ZBA, Inc. in Cincinnati, Ohio and a Principal Investigator with the U.S. Army Construction Engineering Research Laboratory in Champaign, Illinois.

Dr. Bahnfleth holds a doctorate in Mechanical Engineering from the University of Illinois and is a registered professional engineer. At Penn State, he teaches undergraduate courses in HVAC fundamentals and design and graduate courses in chilled water systems and indoor air quality. He is the author or co-author of more than 180 technical papers and articles and 15 books/book chapters.

Dr. Bahnfleth is a fellow of ASHRAE, the American Society of Mechanical Engineers, and International Society for Indoor Air Quality and Climate. He served ASHRAE as Society President in 2013-14 and chaired the ASHRAE Epidemic Task Force. He formed and chairs the committee that developed ASHRAE Standard 241 Control of Infectious Aerosols.

He is the recipient of many ASHRAE awards, including the Donald Bahnfleth Environmental Health Award, Standards Achievement Award, Louise and Bill Holladay Distinguished Fellow Award, and F. Paul Anderson Award, ASHRAE’s highest honor.