Koolant Koolers C Series chillers are an all-in-one package, including the refrigeration circuit, tank and pump - all sized to suit your cooling needs. This unit is available in one to hundreds of tons of cooling, utilizing multi-module cooling of your water application. This design is also well-suited to be utilized with indirect cooing with heat exchanger packages for all fluid types, including acid and coating technologies. The C Series utilizes a submersed copper coil heat exchanger to offer extra freeze protection in situations where glycol cannot be used in your water.