ECO-FRIENDLY HEAT FAN - This economical wood stove accessory is powered only by the heat produced by your fireplace or wood-burning stove. The blades faster as the fire gets , dispersing the heat throughout the room without using electricity. QUIET - The blades are the only moving part of the small stove fan and don't require a large motor, making for a quieter way to disperse warm air throughout your home. The wood fan can move up to 190-cubic-feet-per-minute, distributing heat efficiently. STOKING INDICATOR - Maintain a steady fire with ease with this heat-powered fan. The blades fastest while your fire roars hot and provide a handy visual indicator to help you gauge when to stoke the fire or add more to maintain its warmth. LOW MAINTENANCE - This convenient fan for the top of wood stoves requires very little attention to keep it running well. Simply dust it off occasionally, and put light oil on the blade shaft to keep it smoothly and quietly over its lifespan. Heat Powered -The fireplace fan does not require batteries or power supply, and is driven by thermal power, making full use of the heat generated by the stove, effectively circulating warm air, and is widely used in wood stoves, fireplaces, gas stoves and other hot stoves