Energy Saving: The 6-blade heat fan can convert more heat while improving stability. The energy conversion efficiency is very high, saving more energy. Self-powered: The wood stove fan is designed to circulate the hot air created by a wood stove / coal or pellet burning operating at normal surface temperatures between 60C and 350C. Overheat Protection: When the temperature is above 350 degrees Celsius, this fireplace fan will gradually insulate the chimney contact surface and the fan will stop working to protect the normal operation of the machine. Quiet without Noise: Newly designed blade, larger air volume, with noise lower than 35dB. The only moving part is the blade assembly. Say goodbye to terrible noise, you will enjoy warm air in a quiet and comfortable environment. Easy Operation: There is a hook on the stove fan for easy carrying. No installation is required, just follow the instructions to place your stove fan to the side of the wood stove or fireplace, not directly in front or near it. This is a fan which uses thermal energy as an energy source to circulate hot air from the wood-burning fireplace. There is a thermoelectric module on the fan which acts as a small generator to drive the fan motor. Electric current is generated when this generator module experiences a heat difference between the upper and lower surfaces. The bottom of the fan heats the bottom surface of the module, while the top of the module is kept cool by the top fan fins. No batteries or power required! That is to say, as long as it is placed on the wood stove, it will absorb heat to spin the fan, thereby blowing hot air over the wood burning fireplace directly into the living room, increasing air circulation in the room and improve the heating efficiency of the stove The rotation speed of the fan varies according to the temperature of the wood stove. The higher the temperature of the stove, the faster the rotation speed. When the oven temperature is so low that the fire goes out, the rotating speed slows down until it stops rotating. Product advantages: 1 . Save fuel, fans distribute stove heat to provide better fuel efficiency. 2. Self-generating - no plug - no battery; 3. Quiet operation; 4. Automatic start, speed adjustment and stop; 5. Simple and elegant design. use: 1. Place the stove fan on a smooth, flat surface on top of the stove, near the side or back of the chimney. 2. The oven fan is designed for freestanding stoves and the oven surface temperature is between 65-C 350). Temperatures above this range can damage fans and generators and render your fans ineffective. Product Parameters: Product: Chimney Fan Material: Alumina Air volume: 180-210 Sheets: 6 sheets Wind speed: 800-1100rpm Noise: 35dB Working temperature: 60-350c Battery: none Size: 180*100*190mm Color: Black