What is the definition of a water chiller unit? A water chiller unit is a type of cooling system that is used to reduce the temperature of a liquid, such as water, by using a refrigerant to absorb the heat from the liquid. The heat is then dissipated into the environment by means of a fan or air conditioner. Water chillers are commonly used in industrial and commercial settings, such as factories, laboratories, and food processing plants, where they are used to keep temperatures consistent and prevent equipment from overheating. They can also be used in residential settings, where they are used to cool swimming pools, hot tubs, and other water-related areas. Water chillers work by circulating the water through a compressor, condenser, and evaporator. The compressor compresses and pressurizes the refrigerant, the condenser cools the refrigerant, and the evaporator absorbs and removes the heat from the water. This process can also be reversed, allowing the