Play Arquitectura participated in the 19th Passihaus International Conference held on April 16-19, 2015 in Leipzig. On April 16, a specific seminar on PHPP 9, DesignPH and new decentralized ventilation systems for Passivhaus buildings was held. On April 17 and 18, some 60 papers were presented organized in 4 blocks, among which Enerphit, Non-Residential Buildings and the booming market in China stood out. All the news in terms of new components, construction systems and applications were also presented. Finally, on April 19, excursions were made to different buildings built under the Passivhaus standard, with Play having the opportunity to visit a nursery and primary education center, a fire station and a sports center.