The Air-Conditioning and Refrigeration Institute,(ARI) (Arlington, VA), announced that building owners this year are expected to nearly reach the halfway point in the replacement of comfort cooling chillers that use chlorofluorocarbons. A survey of large tonnage liquid chiller manufacturers by ARI revealed that by the end of 2001 approximately 40,560 of the 80,000 CFC chillers in service in the early 1990s will still use CFCs.