This is the image that best explains what a masonry heater is. In the foreground, the firebox and its mass of blocks. Beside it, laid flat, the flue path in ceramic sections: a right-angled coil, with its vertical rising column, which will then be embedded in the masonry.
This is where everything happens. The flue gases leave the firebox at a very high temperature and travel several metres of channels before reaching the chimney stack: there they give up their heat, which the mass then releases slowly. A masonry heater is not a heavier stove — it is a stove that sends its flue gases on a detour.
Supported self-build project, completed in 2015.
