The Heat Pump Test Rig demonstrates the complete working of a heat pump system, including heating and cooling cycles. It helps students study system efficiency, coefficient of performance (COP), and energy transfer principles. The setup includes a compressor, condenser, evaporator, and digital instruments for precise measurements. Suitable for engineering colleges, polytechnic institutes, and ITIs, it provides real-time visualization of heat pump operations. Designed with robust construction and safety features, this trainer enables learners to analyze performance under variable load conditions, making it ideal for HVAC and refrigeration education.