Free cooling is an economical method of using low external air temperatures to assist in chilling water; which can then be used for industrial processes; or air conditioning systems. the chilled water can either be used immediately or be stored for the short- or long-term. when outdoor temperatures are lower relative to indoor temperatures; this system utilizes the cool outdoor air as a free cooling source. in this manner; the system replaces the chiller in traditional air conditioning systems while achieving the same cooling result. such systems can be made for single buildings or district cooling networks.