Outdoor Wood-Burning Furnaces: Beating the High Cost of Energy

Learn the mechanics and benefits of an outdoor wood-burning furnace.



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Marcus Ashley holds the heater's main access door open to reveal the smaller combustion chamber door and an abundance of insulation.
PHOTO: MOTHER EARTH NEWS STAFF
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These schematic diagrams show the relative positions of the furnace's working part, and the manner in which boiler-warmed crater is routed between-furnace, house, and hot realer healer.
MOTHER EARTH NEWS STAFF

















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