A novel system, apparatus and method of operation for use in watercraft, terrestrially bound motor vehicles and fixed based land applications where water from a live well or bait tank is withdrawn, filtered, climactically controlled and conveyed through a water conditioning unit containing in part a heat exchanging unit with a generally serpentined contour water passageway, the water passageway formed and structured in a manner to allow water, or another fluid within the passageway to abut and surround a generally serpentine form tubular conduit containing a pressurized refrigerant with the water routed within the passageway maintaining continuous contact with the conduit then exiting the heat exchanging unit returned to the live well tank or bait tank.