An Ecofan is a heat-powered fan that uses a thermoelectric module to convert stove heat into electricity.

The Ecofan operates by harnessing the Seebeck effect: when one side of the thermoelectric module is heated by the stove and the other side remains cool, it generates electricity to power the fan blades. This creates air circulation without needing batteries or external power sources, improving heat distribution from wood stoves.

How the thermoelectric module generates power

  • Heat from the stove warms the bottom of the module
  • Cooling fins on top maintain temperature difference
  • Temperature gradient creates voltage to drive the motor
  • Fan speed increases with stove temperature

Benefits of using an Ecofan

  • Reduces fuel consumption by 14-18%
  • Distributes heat 38% faster than no fan
  • No operating costs or batteries required
  • Silent operation

Ecofan vs traditional electric fans

Feature Ecofan Electric Fan Battery Fan
Power source Stove heat Electricity Batteries
Operating cost None Electricity cost Battery replacement
Portability Fixed to stove Requires outlet Limited by batteries
Environmental impact Low Medium High (battery waste)