iPHA Webinar February 2021|Speakers: Berthold Kaufmann, Passive House Institute Rainer Pfluger, University of Innsbruck When temperatures drop in winter, relying on window ventilation to manually ventilate a room becomes very uncomfortable and unviable. Especially schools, with their high occupancy, are in need of alternatives when it comes to properly ventilate classrooms. In times of Sars-CoV-2, high air change rates play a major role in mitigating the risks of infection posed…