Chillers cool water that is circulated through buildings to air condition offices, hospitals, malls, airports, factories, sports complexes, government buildings and institutions such as colleges. New, non-CFC chillers reduce electricity costs because they can be at least 40% more efficient than the CFC units installed 20 years ago. In 2000, non-CFC chillers reduced electricity usage by 7 billion kilowatt-hours per year, saving $480 million and avoiding production of 4 million tons of carbon dioxide by power plants.
During 2000, there were 3,235 CFC chiller replacements and 913 conversions to non-CFC refrigerants. ARI stated that, at the current pace, it will take at least until 2010 to eliminate chillers that use CFC-11 and CFC-12, the most widely used refrigerants.