The object of the project is the energy upgrade of the Almondeonas Indoor Gymnasium in the Municipality of Kavala. This building, with a total area of approximately 1,160 square meters, provides shelter for a number of sports throughout the year, both at the training level and the organisation of local championships, with serious operational problems and large operating costs, due to the age of the building, heating problems, non-existence of air conditioning and ventilation and incomplete thermal insulation.In order to address the above problems, in the context of this project, work will be performed for the installation of the led heat system for the installation of an air-conditioning and ventilation system.