The aim of the project is to reduce the energy performance of Hall No.4, parcel number 913/1 of the Mladá Boleslav hospital. A set of energy-saving measures will be implemented: — forced ventilation with recuperation – the introduction of energy management principles.The project’s implementation will achieve savings of total input energy by 216 GJ/year, i.e. 9.47 %, reduction of CO2 emissions by 26.125 tonnes/year, i.e. 7.59 %.