Water Chillers are backbone of cooling systems. Water chiller is a refrigeration machine which produces chilled water. Degree C ~ 12 Degree C.) The primary function of a chiller is to lower the temperature of water to such value such that used for producing cooling effect in integration with other HVAC components. A water chiller is just like a other refrigeration but instead of keeping your food cool or making ice, it produced chilled water. The output of chiller is water at lower ten usually around about 10 o C depending upon the Chiller design.