Paul is a strong advocate for the use and tinkering of rocket mass heaters – a wood burning stove design that utilizes the heat typically lost through exhaust piping in conventional designs as an additional heat source. The design is simple enough that anyone can build one, and can heat your home with as much as 90% less wood. Paul’s latest video series shows in great detail how to build and use a rocket mass heater several different ways – you can learn more here.
In addition to maximizing fuel efficiency with the exhaust piping, rocket mass heaters incorporate a thermal mass to more gradually distribute heat, and create a longer lasting heat source. Often times this is done by winding the exhaust piping through a beautiful cob bench, but in Paul’s DVD sets, he also covers pebble style rocket mass heaters.