Central chillers are referred to as chillers, which provide the central cold water unit for processes in the factory. These types of chillers prevent the use of large chillers in different parts of the plant. The central chillers can be manufactured either portable or stationary. The tonnage of a central chiller is relative that can be from 10 tons of refrigeration to 200 tons of refrigeration. But as usual, central chillers with a tonnage of over 50 tons of refrigeration.