Abstract: A device for winterizing pools comprises a compartment including a front portion having a periphery defining a first opening. An upper portion of the compartment defines a second opening. The periphery is to sealingly engage a wall of a swimming pool such that the first opening surrounds a return line aperture defined by the wall of the swimming pool. The second opening defined by the upper portion is to be disposed above a water level of the swimming pool. A pump is to be disposed within the compartment, and is energized by, for example, a DC power supply. A conduit includes a first end to be coupled to an outlet of the pump and includes a second end to be disposed outside of the compartment and adjacent to the upper portion thereof for directing fluid out of the compartment.