February 2026 Chapter Meeting Dinner Presentation (In-Person)
2026-02-18 17:30 - 20:30 (America/New_York) | Liberty Tavern, 3195 Wilson Blvd, Arlington, 22201, United States
Dinner Presentation
PDH certificates will be provided for attending this event.
Protecting Building Occupants from Airborne Infections - ASHRAE Standard 241
ASHRAE, through its Epidemic Task Force, provided timely leadership in responding to the COVID-19 pandemic from March 2020 through June 2022. At the request of the White House, ASHRAE undertook its own project Warp Speed to build on that expertise for the future. In December 2022, the ASHRAE Board committed to rapidly writing a standard to make buildings more resilient against infectious aerosols ahead of the next epidemic. In only four months the project committee created and won approval for ASHRAE Standard 241-2023. This lecture will provide a summary of the standard including its purpose, scope, and key requirements together with supporting background. Plans for future development of the standard and prospects for its adoption will also be presented.

William P. Bahnfleth, PhD, PE, Fellow/Presidential Member ASHRAE, ASHRAE Distinguished Lecturer
William Bahnfleth is a professor of architectural engineering at the Pennsylvania State University (Penn State) in University Park, PA. Previously, he was a Senior Consultant for ZBA, Inc. in Cincinnati, OH and a Principal Investigator at the U.S. Army Construction Engineering Research Laboratory in Champaign, IL. He holds a doctorate in Mechanical Engineering from the University of Illinois and is a registered professional engineer.

At Penn State, Dr. Bahnfleth teaches undergraduate courses in HVAC fundamentals and design and graduate courses in chilled water systems and indoor air quality. His research interests cover a wide variety of topics including chilled water systems, thermal energy storage, and indoor air quality with a focus on control of bioaerosols. He is the author or co-author of more than 180 technical papers and articles and 15 books and book chapters.
Dr. Bahnfleth is a fellow of ASHRAE, the American Society of Mechanical Engineers (ASME) and the International Society for Indoor Air Quality and Climate (ISIAQ). He served ASHRAE as Society President in 2013-14 and chaired the ASHRAE Epidemic Task Force. He is the recipient of many ASHRAE awards, including the Exceptional Service Award, the E.K. Campbell Award of Merit for teaching, the Donald Bahnfleth Environmental Health Award, , the Louise and Bill Holladay Distinguished Fellow Award, and the F. Paul Anderson Award. He is also a recipient of the Penn State Engineering Alumni Society’s World-Class Engineering Faculty Award and a Distinguished Alumnus of the University of Illinois Department of Mechanical Science and Engineering.

Government Affairs Lunch and Learn 2/24/26
2026-02-24 12:00 - 13:00 | VA

March 2025 Chapter Meeting PES (Virtual)
2026-03-25 12:00 - 13:00 | VA

March 2026 Chapter Meeting Dinner Presentation (In-Person)
2026-03-25 17:30 - 20:30 | Liberty Tavern, 3195 Wilson Blvd, Arlington, 22201, United States

Tech Awards 2026
2026-04-01 00:00 - 2026-06-01 23:30 | VA

2026 ASHRAE Region III CRC
2026-08-13 - 2026-08-16 | VA
