s wood is burned in the firebox, fresh air is blown downward through the logs and coals. This creates a mixture of hot air and wood gases that are forced through our custom-made refractory where it meets a second jet of super-heated air, creating a torch-like combustion of the retained gases. This process â known as wood gasification â results in almost all the gases being burned with little soot, ash, or creosote residue. This energy is then transferred to Econoburnâs full water-jacket heat exchanger and used to heat your home or work environment. Even when the fire burns down, the refractory chamber maintains its temperature; once the heavy-duty draft fan starts, it re-ignites fresh wood.