The provision of infrastructure and the provision of thermal comfort conditions to primary school students is a priority and an obligation in the context of improving the quality of life for the residents of a city and a municipality Maintaining the proper and quality operation of these infrastructures is a challenge for each municipal authority The energy upgrading of municipal buildings is a one-way street in order to reduce energy operating costs while at the same time improving the levels of thermal comfort of users and reducing the environmental footprint The act entitled ENERGY UPGRADING OF THE 1st MUNICIPAL SCHOOL OF SOUFLIOS integrates conventional RES technologies and energy saving interventions which in an innovative way lead to the drastic reduction of primary energy consumption and carbon dioxide emissions while at the same time includes interventions that enhance the hygiene of users and ensure the accessibility and transportation of people with disabilities The act is based on the integration of air-cooled heat pumps after the implementation of energy saving interventions in the building shell with the support of a photovoltaic energy clearing system to achieve almost zero energy and carbon emissions.