Ernie Wisner, a wood stove designer in portland, oregon, compares a rocket mass heater to a conventional wood stove.
He used to heat his home with four cords of wood with a wood stove and now burns a half cord of wood each year. He now burns tree trimmings.
In this video he give us a tour on how the rocket mass heater holds heat throughout the night and into the next day while the wood stove required constant feeding. My other videos dive into the tutorial aspect.