A 1200 ton chiller is a large industrial cooling system that is capable of providing up to 1200 tons of cooling capacity. This type of chiller is typically used in commercial and industrial applications, such as cooling large buildings, manufacturing plants, and power plants. The cooling capacity of a 1200 ton chiller is typically provided by two large compressors that are connected to a series of large evaporator and condenser coils. The evaporator coils absorb heat from the air or liquid that is being cooled, while the condenser coils release the heat into the atmosphere. The cooling capacity of a 1200 ton chiller is usually measured in British Thermal Units (BTUs) per hour. This type of chiller is usually powered by electricity, but can also be powered by natural gas or propane. The size and complexity of a 1200 ton chiller can vary greatly depending on the application, but it is typically much larger than smaller chillers used in residential applications.