More about Ecofans

The Caframo Ecofan 810 UltrAir and 812 AirMax are heat powered fans designed to circulate the warm air created by a wood-stove operating with normal surface temperatures of between 65°C and 345°C. The optimal running temperature of these wood-stove Ecofans is the same as the recommended safe operating temperature for wood-stoves of between 205°C and 345°C. These fans do not use batteries or mains power.
  • Creates its own Electricity!
  • Increases Your Comfort
  • Uses Less Fuel
  • Silent In Operation

Increased Efficiency: Warm air is circulated directly into the living area rather than having most of the stoves heat rise immediately to the ceiling, thereby increasing the heating efficiency of your stove.
 Heat distribution without an Ecofan
 Heat distribution with an Ecofan

Software simulation

Fuel Saving: Testing carried out in collaboration with a leading Canadian university has proven that using an Ecofan results in fuel savings of up to 14%. For more information click here.

Unique Blade Design: The unique anodised gold, nickel or black coloured blade has been specifically designed to deliver a very broad cross section of gentle air movement instead of a small cone of concentrated air.

Easy Operation: Ecofans start automatically and adjust speed with the stoves temperature. As the stove heats up the Ecofan runs faster to move more air into the room. As the stove burns down and cools, the Ecofan automatically slows down and stops.

Costs Nothing to Operate: Ecofans use only the heat from the stove. The Ecofan is the most economical way to efficiently circulate warm air. It does not use any batteries and can be used where there is no electricity.

Ecofans are made from anodised aluminium that will not rust.


It is important to read, and follow, the instructions on the correct placement of the Ecofans to ensure satisfactory long term use and that your stove is working within the temperature range of 'best operation'. We recommend the use of our Stove Thermometer.


Technical Information for the Ecofan™ 800 Series

These fans have a thermoelectric module which acts as a small generator to power the fan's motor. When this generator module experiences a heat differential between its top and bottom surfaces, it pumps out electricity. The base of the fan heats the bottom surface of the module, while the top of the module is kept cooler by the fan's top cooling fins.

The Seebeck Effect

The generator module is a unique semiconductor device that relies upon the Seebeck effect to generate electricity. When two dissimilar semiconductors (p-type and ntype) at the same temperature are connected together they establish a static electric potential difference. With the introduction of a temperature difference heat flows acrossthe joined semiconductors which in turn permits electrons to flow. With the electron flow or current comes the ability to power electrical devices such as the fan's motor.