Looks suspiciously like the Black Bear Boiler, which is made about 100 miles to the north. http://www.adobeboiler.com These are both water tube boilers with a huge refractory mass to store heat, and very little water in the boiler. The flip side of gasification technology, such as that seen in the Tarm and EKO boilers, involves firetubes and 40 or 50 gallons of water around the firebox and refractory chamber. I believe the Garn and Greenwood are also firetube affairs, but with much higher water capacity than the Tarm/EKO design. Anybody have a preference?