Which is not true of a water cooled chiller system?

• A. Uses water as cooling medium
• B. Mostly used in residential systems
• C. Requires cooling towers
• D. Common in commercial facilities

Answer: (B)

Water-cooled chillers reject heat to a water loop, typically via a condenser connected to a cooling tower, which makes them highly efficient for large cooling loads. They require condenser water pumps, cooling towers, and water treatment, plus space for the tower and associated equipment. Because of these factors, they are most common in commercial or industrial facilities with substantial and continuous cooling demands, where the efficiency benefits justify the extra infrastructure.

The statement that they are mostly used in residential systems isn’t true, since homes usually rely on air-cooled chillers or smaller HVAC systems that don’t need a cooling tower or condenser water loop. In residential settings, the simpler, lower-maintenance setup is preferred, whereas water-cooled designs are typically chosen for larger commercial applications.