On 27th November 2015 at Warsaw University of Technology was held the WP4 technical Workshop on RENEW SCHOOL project. Workshop was organized together with XIII National Conference “Indoor Air Quality Problems in Poland” (http://www.is.pw.edu.pl/iaq/). The workshop was attended by 101 participants such as researchers, designers, engineers, architects, school and local communities representatives, producers, and HVAC’s branch media.