David Moon has been appointed vice president and general manager of Lennox International’s Heatcraft Worldwide Refrigeration – Americas Operations. In this role, Moon will be responsible for operating Heatcraft Refrigeration companies in north and South America and will continue his responsibility for China operations. Moon joined Lennox in 1998. He has held various management positions with Allied Signal, Case Corp., and Tenneco in the U.S., Hong Kong, Taiwan, and Germany.