To respond to LionelHutz, be careful with conversion factors. 3.51 kW is "kW of cooling", which is NOT the same as power consumption kW. 12000 Btu/hr = 1 ton = 3.51 kW OF COOLING. Generally, chillers and other cooling equipment range from about 0.7 (for new high-efficiency) upto 1.3 (for old...