Wood Burning Hot Water Heater

Basic wood burning water heater

 Build a cheap heating system using the natural conductivity of copper, efficient transport of heat in water, free fuel and gravity.


Greenhouse heating
Space heating (room heater)
Heated floor system
Hot water tank pre-heater

Basic System
The basic system consists of a burner, copper coil and resivor .

Wood or other fuel is burned in the burner.
Copper coil transfers heat to the water.
Heat moves to resivor.

Gravity fed heat transfer

Gravity operated water heater

Enhance efficiency with pumps
Water heater with external pump

External water pump
Hot woter resivor with internal pump
Internal water pump

Water heater radiator
Hot water radiator