Hermon Heater Plans
All-Brick Rocket Mass Heater. Walls are 4.5″ thick. Wood box / air intake opens @ 4.5″ by 9″, same for burn tube, heat riser & initial exhaust. 10 Bricks per layer in the heater, 16 layers high. Around 180 brick in this heater. One bag of masonry heater mortar. Absorbs lots of heat and gives it out for hours after heater shut down. Cad drawings done with Google Sketchup. Electronic delivery $40.
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