Chiller coils are a type of heat exchanger that are used to cool air or liquids. They are typically used in air conditioning systems, refrigeration systems, and industrial process cooling systems. Chiller coils are made up of two different types of metal tubes that are connected together. The first type of tube is the evaporator coil, which is responsible for absorbing heat from the air or liquid that is being cooled. The second type of tube is the condenser coil, which is responsible for releasing the heat that has been absorbed by the evaporator coil. The heat is then dissipated into the atmosphere or another medium. Chiller coils are a very efficient way to cool air or liquids and are used in a variety of applications.