EN
The study deals with the issue of medieval hot air heating furnaces, also referred to as hypocaustum, in the territory of Slovakia. The paper offers an overview of research, brings a catalog of furnaces from Slovakia and their documentation, while critically evaluating older findings and publishing new hitherto unknown specimens. At the end the study analyses the common features of furnaces and examine also their broader architectural and social context. The study fills in the blanks on the distribution map of this technology and chronologically specifies the process of its spreading and marginalization.