The D-Icer’s™ innovative design delivers powerful, yet highlyefficient operation to move more water. And, the oil-free design eliminates the chance of oil leaks polluting the environment. The submersible motor-driven water circulation unit prevents ice formation around boats and docks during severe winter weather by continuously propelling deeper, warmer water up to the surface. Higher water temperature combined with the constant circulation helps prevent the surface from solidifying and allowing ice expansion pressure to potentially cause thousands of dollars in damage to moored boats and pilings.