The Dual Temperature Skills Trainer (3413-2) provides a basic understanding of a two-stage cooling system such as that found in a typical two-compartment refrigerator. One compartment serves the purpose of a freezer while the other serves as a constant temperature cooler. The trainer includes a hermetic compressor, liquid receiver, forced-air condenser, two forced-air evaporators, thermostat controlled solenoid, filter dryer, and liquid indicator. These components are panel mounted and stored on a mobile rack. The control panel includes a power switch, compressor switch, evaporator fan speed controls with indicator lights, and power breaker.