Mjera se odnosi na energetsku nadogradnju 5. osnovne škole Trikala. This is an existing school building of Energy Category H, which is expected to be upgraded to Category A with improvement of its energy characteristics.The energy upgrade of the building includes the following interventions:-Applying the thermal insulation system on the building shell.-Replacement of the frames.-Construction of the ceiling thermal insulation.-Change of lamps with new energy savings.-Application of the Mechanical ventilation.-Replacement of the building.Approval of the heating systems.-Construction of the building.Change of the operation.Change of the energy saving, the applicability of the Mechanical ventilation.-Replacement of the heating systems.-Replacement of the heating systems.-Construction of thermal insulation of the roof.-Change of lamps with new energy savings.-Application of the Mechanical ventilation.-Replacement of the heating systems.-Replacement of the heating systems.-Construction of the building.Charification of the building and the operation of the energy savings.-Application of the capacity of the building.Creation of the building.Application of the building Thermalisation of the building is provided.According the capacity of the building, and the capacity of the building.The applicability of the building, the capacity of the appliance and the applicability of the building.The appliance of the building, the approval of the building.The building’s approval and the approval of the building.The application of the building, the application of the heating system.-Application of the heating system.-Replacement of the heating systems.-Replacement of the heating systems.-Construction of the capacity of the building.-Change the operation of the energy saving and the application of the Mechanical airing.-Replacement of the heating systems.-Replacement of the heating systems.-Construction of the building.Change of the operation.Change of lamps with new energy savings.-Application of the Mechanical ventilation.-Replacement of the system.-Replacement of the heating systems.-Construction of the heating system.-Change of the operation of the building.Change of the operation of the energy savings.-Application of the capacity of the building, the approval of the building and the approval of the building.The approval of the building and the approval of the capacity of the building.The approval of the building, the approval of the building, the approval of the building, the approval of the building, and the incorporation of the building.Definition of the