Heatcraft Refrigeration Products LLC has added Steve Dyer as the director of operations of the Tifton, Ga., facility and Nader Zyaei as director of operations at the Danville, Ill., facility. Dyer joins Heatcraft from Mid-South Electronics in Alabama, where he was the vice president and general manager. Zyaei joined Heatcraft in 1999 as the engineering manager of the Danville plant, from Industrial Wire Products, where he served as plant manager.