The project concerns the energy upgrade of the Souda High School of Chania and includes specialised interventions such as: — Installation of a certified external thermal insulation system.- Removal of existing metal panels the room and complete construction of thermal insulation – liquid insulation in it.- Removing the simple metal frames of single glazing and replacing them with double-glazed aluminum frames, with thermal interruption.- Heating of the interior spaces of the building through a central air cooling pump of heat, which will supply new aluminum frames of double glazing, with thermal break.