Sidl Masonry Heating 2013
Unlike conventional cast iron wood stoves which connect the chimney directly onto the fire chamber, European masonry heaters have several meters of channels (commonly known as heat exchange channels or flue gas channels) separating the fire chamber and chimney connection. This separation allows for maximum efficiency by removing the highest possible amount of heat from the flue gases and storing it into the refractory material before continuing into the chimney.
A masonry heater is a wood burning heating system that burns at a high temperature to efficiently extract the highest amount of energy with a minimum amount of pollution. These stoves are build almost entirely out of high density refractory material, specifically manufactured for masonry heaters. This material absorbs the heat and over the next 8 to 24 hours slowly releases it into the room in the form of radiant heat.