The AEG free cooling economizer provides proven low cost 55° F process water cooling when ambient outdoor air temperature drops below 45° F. Typically used in conjunction with a chilled water system the AEG economizer automatically assumes the cooling load and shuts down your chiller compressors and condenser fans when the preset ambient air temperature is reached. Economizer use will save thousands of dollars in electrical costs and prolong the life of your chiller system.