Only clay stone save very good heat. It gives this heat delayed about approximately 10 hours out to the room. So the solar energy, which at noon is absorbed by the windows, can be use as an extra heat source in the evening.
At Rötzer-Ziegel-Element-Haus with an air-handling ceiling is the benefit by the relative huge ceiling area additional use. Mainly the system of the exterior wall has a relative huge surface temperature.
The benefits of the building material clay stone combine with the brick-air-handling ceiling multiply lasting the financial, health, homelike and ecological profit.