The Caframo Ecofan® is a heat-powered fan designed to circulate the warm air created by a wood or gas stove. Improved warm air circulation results in greater comfort and less fuel consumption. Ecofans fully comply with all CE Immunity Emissions and Product Safety requirements. Costs nothing to run… Using the heat from the stove, a Stove Fan is the most economical way to effectively circulate the warm air your stove produces. No cables, plugs or batteries are required.