Pleasant Hearth GFB100 Vent-Free Fireplace Blower Improve whole room heating with this 2-in-1 mode fan MANUAL MODE  Turn ON at the flick of a switch AUTO MODE - Fan automatically operates when the heater gets above 113 degrees Fahrenheit to ensure its blowing ONLY warm/hot air Includes power supply (6' Cord Length), and all necessary wiring Designed and certified to only operate with Pleasant Hearth Vent Free Fireplace Systems 2 Year Warranty