The Eco-Fans are powered by the heat of your stove. They will redistribute warm air, reduce hot and cold spots in your room with little trouble and no extra energy. Unobtrusive and virtually silent.
Ingeniously designed, they convert thermal energy into electrical energy. Blades start turning when stovetop reaches about 150°F. Optimal performance is between 400-600°F. No maintenance or installation required.
NOTE Do not use on surfaces that exceed 700° F. If surface exceeds 700° F, remove fan from stove or move to edge of stove where it is cooler.
SPECIFICATIONS - Two blades move up to 100 CFM. - Fan speed varies automatically with the stove temperature. - 9" x 5" x 6.75" - 1.5 lb. - Patented technology
Ecofan Original Stovetop Fans 
The Eco-Fans are powered by the heat of your stove. They will redistribute warm air, reduce hot and cold spots in your room with little trouble and no extra energy. Unobtrusive and virtually silent.