In the article, technical and ecological analyses of thermo-modernization of a single-family house located in Kraków and the adaptation of the building to the current regulations were made. The parameters of the energy performance of the building before and after thermo-modernization were presented. For calculating the U-factor of building partitions and the heat demand for the building, the Sankom Audytor HL (OZC) software was employed. The Sankom Audytor ECO 1.0 software was utilized to calculate ecological assessment. In the case of existing buildings subject to thermo-modernization, it is practically challenging to provide a building with a level considered to be energy efficient without introducing additional system solutions in the building's internalinstallations as well as using highly efficient renewable energy sources. Due to the constantly growing requirements of the Technical Conditions in the area of limiting the consumption of heat carriers andreducing the U coefficient, thermo-modernization is one of the most important stages of decreasing the building's demand for primary energy. ...
