The Pleasant Hearth GFB100 Vent-Free Fireplace Blower is the perfect way to improve whole room heating. With its 2-in-1 manual/auto mode fan, you can turn it on with the flick of a switch in manual mode, or the fan will automatically operate when the heater gets above 113 degrees Fahrenheit in auto mode, ensuring it’s blowing only warm/hot air. This blower includes a power supply with a 6′ cord length and all necessary wiring, and is designed and certified to only operate with Pleasant Hearth Vent Free Fireplace Systems.