Carrier Corporation (Farmington, CT) has announced several promotions and appointments.John F. Malloyis now president, Residential and Light Commercial Systems;Anthony J. Guzzi is now president, Commercial Systems and Services;Frank Hartman, is now president, International Comfort Products;Dr. Sophie Vandebroek, has been appointed as vice president of technology;Bruce Burdon has been appointed general manager, Applied Systems;Dave Roth, is now vice president and general manager Carlyle Compressor;Tom Gaubatz, is now general manager, Airside Systems; andDan Williams was named general manager Commercial Unitary Systems for Carrier’s Commercial Systems and Services business unit.