TEMPSTAR residential central air conditioners; light commercial air conditioners; gas, electric, and oil furnaces; commercial air conditioning and heating equipment and systems; and other specialized equipment. The company also offers various parts, including replacement compressors, evaporator coils, motors, and other component parts; and supplies consisting of thermostats, insulation material, refrigerants, ductwork, grills, registers, sheet metal, tools, copper tubing, concrete pads, tape, adhesives, and other ancillary supplies.