I am thinking of stepping up to a gassifier boiler and have been doing some research on which one to buy. I think i have the whole idea of gassifier operation figured out But , there seems to be something different about the garn. from the pictures ive seen it looks like the most gassifiers use a blower on the intake side where the garn looks like it actually pulls the intake air through the whole unit from the flue side, is this right? Also am looking for someone near by my place that i could check out a couple of different brands in person. I live in Ravenna Mi which is about 15 minutes east of Muskegon, any help would be greatly appreciated. Thanks nate