An air cooled chiller » removes heat from a water or glycol loop by rejecting it directly to the surrounding air through fans and condenser coils. Because it needs no cooling tower or makeup water, it suits sites where water is limited or installation time is short. Common uses include commercial buildings, factories, warehouses and temporary project facilities. Before choosing a unit, teams usually review required cooling capacity, ambient temperature range, power supply, available footprint and noise limits. Part-load behavior and maintenance access also matter when comparing options. This overview explains the working principle and the questions facility managers should ask before specifying equipment for a new or existing system.