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rocket mass heaters

Batch box burns 5.4x the wood; a J-tube is 3x simpler to build; best rocket mass heater design

Andrés Bernal

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Location: Colombia - Tropical dry forest

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posted 6 hours ago

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This is what a tiny ad looks like buck naked

A rocket mass heater heats your home with one tenth the wood of a conventional wood stove

http://woodheat.net

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