NOTICE OF MEETING
Integrating Indoor Air Quality and Energy Efficiency in Buildings
Date:
Monday October 5, 2026
Venue:
DoubleTree by Hilton Hotel Toronto Downtown - Mandarin Ballroom, 108 Chestnut St, Toronto, ON M5G 1R3
Agenda:
5:30 PM - 6:30 PM : Networking
6:30 PM - 8:30 PM : Dinner and Presentation
EVENT SUMMARY
Buildings are one of the largest energy end use sectors in countries around the globe. Concerns for the availability of energy supplies and the impact of energy use on the environment are driving a worldwide focus on energy end use reduction. In this push for dramatic changes in the energy use intensity of the building sector, it is essential that the fundamental importance of indoor environmental quality, particularly indoor air quality, not be lost. This presentation addresses: 1) the significance of indoor air quality in terms of its impact on health and productivity and associated costs; 2) the inseparable linkage between indoor air quality and building energy demands, including examples of efficient technologies for maintaining good indoor air quality; and 3) the need for an approach to building research, design, and operation that recognizes this connection.
Special Notice:
Prior to the dinner, the Student Activities (SA) Committee will host the Student Congress at the event venue. Students interested in participating in this session can find additional details and attendance information here. We look forward to welcoming everyone for an engaging and memorable evening.
SPEAKER

William P. Bahnfleth, Ph.D., P.E.
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 200 technical papers and articles and 18 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 was ASHRAE Society President in 2013-14. He chaired the ASHRAE Epidemic Task Force and was the first chair of SSPC 241, which developed ASHRAE Standard 241-2023 Control of Infectious Aerosols. Dr. Bahnfleth’s ASHRAE awards include the Exceptional Service Award, the Andrew T. Boggs Service Award, the E.K. Campbell Award of Merit for teaching, the Donald Bahnfleth Environmental Health Award, the Standards Achievement Award , the Louise and Bill Holladay Distinguished Fellow Award, and ASHRAE’s highest honor, the F. Paul Anderson Award. He is also a recipient of the Penn State Engineering Alumni Society’s World-Class Engineering Faculty Award and is a Distinguished Alumnus of the University of Illinois Department of Mechanical Science and Engineering.
Venue Details:

Double Tree by Hilton - Downtown Toronto Venue
Join us at DoubleTree by Hilton – Downtown Toronto, located in the heart of the city. This welcoming and centrally situated venue offers easy access to transit, dining, and cultural landmarks, making it an ideal setting for professional gatherings, presentations, and networking.
Walk-in registrations will not be permitted.
Photography Disclaimer
Please be advised that a photographer will be present during this event. Photos may be taken and used for internal or promotional purposes. If you prefer not to be photographed, it is your responsibility to inform the photographer directly at the event.

Please feel free to reach out at cttc@torontoashrae.com if you need assistance.
Siddharth Singh, P.Eng, PMP
ASHRAE Toronto CTTC Chair
King Tung, P. Eng, MASc
ASHRAE Toronto CTTC Co-Chair