【Automatic Operation & No Cost】No installation, no hassle, no battery or power supply! Just place the stove fan on the stove which has a smooth and warm flat surface, it will rotate as the temperature rises. Easy and efficient! 【Energy Saving & Environmental Protection】The heat powered stove fan is designed to circulate the warm air created by burning wood/coal or pellets. Take full advantage of the heat from your wood stove and quickly disperse it throughout your room. The room will warm up faster. It keeps circulating warm air to keep the room warm all the time. Less consumption and more efficiency！ 【Overheat Protection Device】The fan is made of anodized aluminum, so it will not rust or corrode in the heat, so it is strong and durable. A bimetallic safety device is installed at the bottom of the fan. If the surface temperature exceeds 345℃, the safety device will gently lift the front end of the fan to reduce the contact surface between the fan and the wood stove to protect the TEG