These ingenious stovetop fans are completely silent and cost nothing to operate. Based on a phenomenon known as the Seebeck effect, Ecofans use thermocouple technology to generate an electrical current by exploiting the temperature difference between the stovetop and the ambient air. The fan speed on each varies with the temperature difference (greater difference, greater speed), quietly moving warm air from the stovetop. Made largely from anodized aluminum, they are an efficient way to disperse heat.
The original Ecofan for wood-burning stoves can produce up to 125 cfm of air movement, stands 9" tall, has an 8" diameter brass blade; it operates on surface temperatures from 212° to 650°F (100° to 345°C).
Designed for high-efficiency wood stoves, the small and large Ecofans do not require as high a temperature as the original to begin working. They start spinning as your fire builds, and continue circulating air longer, even as the flames die down. The re-engineered black-finished brass propeller turns more rapidly; at approximately 9" tall, the small model’s 8" diameter blade moves 160 cfm of air at temperatures from 149° to 653°F (65.5° to 345°C), and the large model - at a height just under 9 1/2" – has a 9" blade that moves 190 cfm of air at temperatures from 158° to 653°F (70° to 345°C).
The Ecofan GS is specifically for gas and pellet stoves. It has a base designed for greater heat conduction and two thermoelectric modules (the others have only one) to create enough electricity to run the motor. 6 1/2" tall, it has a 9" diameter brass blade. Operates on surface temperatures from 167° to 392°F (75° to 200°C) and circulates up to 140 cfm. Cannot be used on wood stoves, as the high heat causes an overload switch to trip.
Made in Canada.