The subject of the project is a deep energy modernisation of segments I,H,E (a swimming pool hall with technological and technological facilities, lockers and gym) of a public utility building in the City’s resource, i.e. Sports school team in Siem. Śl. at ul. Santa Claus 3, through: 1. Replacement of window carpentry 2. Wall and roof warming 3. Thermal modernisation of the basin 4. Warming up the ceiling of basement 5. Replacement of installations every 6. Exchange of heat node 7. Replacement of CWU 8. Replacement of the installation of pool water technology 9. Ventilation exchange The process innovation was established for the compilation of RES installations (funded from another sub-measure) with the installation of central pool water heating in order to achieve max. ecological effect.