At a traditional house in the heart of the forest area of Pyrga, a solar heating system with 4 panels TiSUN large surface FI, In-Roof, was placed. The In-Roof installation is in harmony with the traditional architectural flair of the building. The system supports under floor heating and provides hot water for 5 residents and extends the swimming pool usage for another 4 months. The solar fraction of the system is about 60%.