The most expensive part of a fridge freezer is typically the compressor. The compressor is responsible for circulating refrigerant throughout the system, maintaining the desired temperature inside the appliance. Compressors are complex and precision-engineered components that require advanced manufacturing processes, which contribute to their high cost. Additionally, they are often the primary driver of energy consumption in a fridge freezer, making them crucial for efficient operation. As a result, compressors tend to be the most expensive individual component in a fridge freezer.