Prof. Sabine Hoffmann has on 10/24/2016 on the IAQVEC (International Conference on Air Quality, Ventilation & Energy Conservation in Buildings) represented the field internationally both as a session leader and with a presentation. In the presentation "A new approach to provide thermal comfort in office buildings - a field study with heated and cooled chairs" a field study from 2015 with air-conditioned chairs was presented. The conference is primarily aimed at the topic "Indoor environmental quality (IEQ)", taking into account energy-efficient, health and sustainability aspects.