Ice-Away's high speed motor-driven propeller pulls warmer deep water to the surface. It is diffused upward and outward into a circular area equivalent to approximately 8 feet in diameter for every foot of propeller depth. Placed at 5 feet of depth, the ICE AWAY will keep a 40 foot circle free of ice during extreme cold weather. (to achieve 5ft. depth you must have a pond depth of 6'6".) Powered by a Franklin submersible type 1/2 H.P. motor, water cooled, water lubricated, draws 7 amps under full load. includes 25' heavy duty underwater electric cord.