General description No electricity or battery is required for this eco-friendly Blade Heat Powered Quiet Stove Fan, which is powered by heat. It is designed for use with wood burning fireplaces, wood stoves, or pellet stoves, effectively dispersing warm air throughout your room. The fan starts working when the surface temperature under it reaches about 50 degrees Celsius and operates efficiently within a temperature range of 50 to 340 degrees Celsius. The fan circulates warm air at a rate of 270 CFM, with a maximum rate of 360 CFM, allowing you to enjoy increased warmth and comfort while using 28% less wood. Technical specifications Power source: Heat powered (no electricity or battery) Operating temperature range: 50°C to 340°C Auto-start temperature: 50°C Maximum surface temperature: 340°C Fan circulation rate: 270 CFM (maximum 360 CFM) Wood savings: 28% less wood usage Other information Safety design includes a bimetal safety device that lifts the front of the fan when the surface