There are a number of advantages to outdoor wood boilers. One is that they can accept far more cordwood than even the largest wood stove, offering longer burn times. Though manual stoking is required, ...
Jerry Blenker is seen in front of his outdoor wood-fired boiler, Thursday, April 10, 2008, in rural Athens, Wis. Blenker uses the boiler to heat his home and two other workshops. (AP Photo/Bob Imrie) ...