- Principal of Refrigeration & Electrical Controlling Devices
- Work & Type of Mechanical Devices in Refrigeration System (Compressor, Condenser, Liquid Filter, Evaporator)
- Compressor Oil & Refrigerant, Refrigerator Wiring, Refrigerator, Water Cooler, Refrigerator Gas Charging
- Air-Conditioning System & Type of Air-Conditioner, Window & Split A.C. Repairing & Wiring
- All Type of Domestic, Commercial & Ductable Air Conditioner, 3 Phase Package Unit Wiring & 3 Phase Panel & All Type A.C. Revision