The 4 blade stove fan uses heat from your stove to power the fan and efficiently disperses the heat around your room. The fan will automatically start to spin around 60degrees, the hotter the temperature of the stove the faster the fan blades will rotate. The stove fan has a working temperature between 60degrees and 300degrees. The fan includes a carrying handle so you can move it when needed. Always wear heat resistant gloves or tongs when the fan is hot.