I just found these boilers while searching the Internet. Are they a true gasifier boiler? I was first looking at owb and this forum has changed my thinking on that. If anybody could give me any information on these boilers it would be greatly appreciated. According to there specs it says there smallest unit will heat 5000 ft sq. I will be about 5200-5500 sq ft. Will the smaller unit heat this area. It will be heating a house and an outbuilding.