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Chillers can be found in most medium to large buildings and will produce the chilled water that is used to provide air conditioning. There are many different types of chillers but essentially they all have the same main components.

The compressor is the the prime mover, it creates a pressure difference to move the refrigerant around the system. There are various designs of refrigerant compressors, the most common being the centrifugal, screw, scroll and reciprocating type compressors. Each type has it’s own pro’s and con’s. It is always located between the evaporator and the condenser. It’s usually partly insulated and will have an electrical motor attached as the driving force, this will be either mounted internally or externally. Compressors can be extremely noisy, usually a constant deep droning sound with an overlaying high pitch, hearing protection should be worn when in close proximity to the chiller.