The Condensing Unit Trainer is an advanced educational setup designed to demonstrate the working principle of refrigeration condensing systems. It helps students understand the operation of essential components such as the compressor, condenser, expansion device, and receiver. This trainer allows learners to study heat rejection, refrigerant flow, and pressure–temperature relationships under different conditions. Widely used in engineering colleges, polytechnic institutes, and ITIs, it provides a clear understanding of the refrigeration cycle. Built with durable industrial-grade components, the condensing unit trainer ensures safe, efficient, and hands-on learning for students pursuing HVAC and refrigeration technology.