【Eco-friendly ＆ Heat Powered】: Our Log Burner Fan is eco-friendly and heat powered. The fire fan is powered solely by heat and does not require any batteries or power cords to operate. 【Higher Efficiency】The heat sensitive sheet of the mini wood burning stove fan is closely attached to the surface of the log burner. High temperatures make the fan for log burner spin faster. Heat transfer through the flue is faster than over the fireplace, allowing the fireplace fan to start faster and run more efficiently. 【Overheat Protection ＆ Longer Lifetime】: The applicable temperature range of heat fan for log burning stove is 50°C (122°F) ~ 350°C (662°F). A built-in safety device automatically elevates the front of this stove fan if it detects a surface temperature above 662 ℉ or 350 ℃. This protects the motor from damage when high temperatures are encountered. 【Silent Operating <25dB】: This wood stove fans on top of stove operate silently. Whether you sleep or work, fan for log burner stove doesn't cause you any trouble. 【Warranty and Support】: The package includes a small log burner fan and a free magnetic log burner thermometer. If you are not satisfied, We provide 30-day refund without any reason. If the log burner fans quality problem, we provide a replacement. Don't hesitate to get in touch with us if you have any questions. 【Noticed】The surface temperature on the location placed the stove fan shall be more than 50℃,the stove fan needs the heat to generate electricity to turn it. Some fireplaces (such as embedded fireplace, or stoves comprised a thermal-protection inter layer to lower the surface temperature on the top of the stoves) , the temperature was less than 50℃, the stove fan can not achieve the heat from the stoves very well, so it won’t work.