Based on an energy audit commissioned by the promoter of the works on the Ferro building, it was concluded that the existing HVAC system was outdated, not presenting the required level of comfort or energy efficiency, therefore, this project aims to describe, calculate and design a new renewable hybrid thermal installation for the HVAC of the Ferro building, on the North Campus of the University of Vigo in the city of Ourense, which covers much of the energy demands of the building.