We made this RMH in the fall of 2012, so we’ve now had two winters with it and we wanted to share our impressions.
To sum up, it has worked fantastically and we love it. We can light a fire on a chilly evening for a couple of hours, and the thermal mass is still hot in the morning. What’s more, the stove pipe goes from the living room, up into the boys’ room through a heat exchanger that we made a while back. So for the whole night, without having anyone feeding a fire, the boys’ room is gently heated and remains cozy.
Rocket Mass Heater on Instructables.
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