http://www.ice-machine-guide.com/taxonomy/term/2/all Water cooled ice makers move heat from water into waste water. Ice makers remove heat from water to make ice and come in three basic forms; Air cooled, water cooled and remote air cooled. Water cooled ice machines move that heat into waste water. Air cooled ice makers move that heat into the air surrounding the ice maker. Remote air cooled ice makers move that heat into air surrounding the separate condensing unit which is usually located outside, often on the roof of the building. en