#1 Best of 2013: Rocket Stove – Ashley Lubyk with a completed rocket mass heater. You can see the barrel which contains the flue gases and the cob bench which acts as giant thermal battery, storing and releasing the heat over time.

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Ashley Lubyk of Dirt Craft Natural Building being interviewed next to a rocket mass heater.

Ashley Lubyk of Dirt Craft Natural Building being interviewed next to a rocket mass heater.