[HowToLou] got back to basics instead, with his simple wood-fired water heater design. The design is straightforward, featuring 100ft of quarter-inch copper tubing wrapped directly around a steel ...

To heat the water, we used a wood-fired thermosyphon heat exchanger ... Cold water enters at the bottom of the heater and expands. Convection moves the heated water upward, pushing it through ...

He’s devised this system for his water heater that takes care of some of this excess incoming energy. A normal water heater, at least one based on electric resistive heaters, attempts to ...