Wood gas, also called "holzgas", air gas or blue gas, is the product of thermally gasifying a biomass material (ie. wood or coal).  Wood gas is generated in a high temperature chemical reaction (>700°) between the wood and a limited amount of steam or oxygen.  The heat and lack of oxygen causes the gases int the wood to release in the form of carbon monoxide, hydrogen and carbon dioxide.

Our boilers take the wood gas mixture that is created in the gasification chamber, then push (or pull depending which model) and burn it at temperatures around 2000° in the burning chamber.  After the gas is burned, any left over emissions exit through the chimney flue.  The most notable indicator of effective gasification is the lack of smoke exiting the chimney.

Wood as a fuel is a good solution due to the fact that it is a renewable resource like solar, water or wind power. These energy sources will never be depleated unless improperly taken care of.