Abstract
The heating system called Hypokaustenheizung is found at the ruins in Germany. This is the Roman sysytem of heating floors by burning fuel under floors. The Roman went away from Germany after the 9th century, thus the heating system by Germanic peoples came to progress. Kachelofen is the traditional fictile radiator which is the particular to Germany. They have been used with various designs synchronizing with a style of building. In this paper, we introduce these radiators and the classification of their design according to their style of building.
