Who invented underfloor heating?

Baunetz_Knowledge

The temperature in the cavity was 50 to 70 ° C, on the floor 35 ° C and in the room 21 ° C. It took several days to heat a room. There was no chimney in ancient times. The exhaust gases flowed out through pipes and shafts in the walls. In the Middle Ages, a hypocaust-like stone air heater heated the halls in castles or town halls before it was replaced by stove heating in the 18th century.

Today the hypocaust principle is used, for example, in modern tiled stove construction or in solar-air systems in conjunction with wall heating. The heat generator is either a fireplace insert for logs / pellets or a solar air collector (Grammer-Solar), which supplies surface heating in a closed air system

Photo credits: D. Baatz / F.-R. Herrmann (Ed.), Die Römer in Hessen, Stuttgart 1989

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