On 27th of October, we handed over the oficial Passive House certification documents to Jordi and Mónica, the owners of Passiv Palau, a detached family house in Palau-Plegamans, a village about 30 km from Barcelona city. The building is situated in a hot, mediterranean climate. First summer had performanced excellent. This say both Jordi and Mónica, but also monitorisation data collected in these last 6 months. Also satisfaction concerning mechanical ventilation system is high. In summer months, nevertheless, this system has been used in a basic modus.