Kuuma Wood Gasification Forced Air Furnaces

"Kuuma" principle - the logs burn from the front to the back. Primary air ignites only the amount of wood that will combust with the available oxygen within the fire chamber. Electronic control precisely regulates the amount of preheated air admitted into the fire chamber. Because the gases and volatile liquids burn at approximately 1000 degrees Fahrenheit it is important that the secondary air is preheated before it is introduced into the secondary zone. The fire burns with a nice soft low flame resulting in a highly efficient burn for a long period of time. You don't need a raging fire to produce a clean burn and useful heat.