Selecting Chillers, Chilled Water Systems Selecting the right chiller is generally dictated by capacity, and there are many philosophies on the best way to control, operate, and calculate system operational costs.

Although the chiller energy may be less than that of a comparable air-cooled chiller, one must still evaluate all the costs of the chiller system, including the cooling tower and condenser water pumps. Learning Objectives • Understand the variety of chiller options based on load requirements. Similarly, air-cooled chillers are typically a more expensive initial investment than a similarly sized water-cooled chiller when comparing strictly the initial cost of an air-cooled chiller versus that of a water-cooled chiller. [Extracted from the article]