Quick Video about the rocket mass heater. I'm guessing the cost to heat with wood, would be even lower if your house was built around this. https://youtu.be/fwC

Quick Video about the rocket mass heater. I'm guessing the cost to heat with wood, would be even lower if your house was built around this. https://youtu.be/fwCz8Ris79g https://youtu.be/fwCz8Ris79g