The cooling efficiency and the technology used in the rapid chiller or freezer are crucial to ensuring food safety and preserving quality. Consider the cooling and freezing capabilities of the device. Look for a unit that enables fast and even cooling, allowing the temperature of hot food to rapidly decrease to a safe level and reducing the risk of bacterial growth. Consider models with advanced features such as adjustable airflow, precise temperature control, and intelligent defrosting systems. The faster the cooling or freezing process, the better the results and efficiency for your catering business. It is advisable to choose energy-efficient models that use environmentally friendly refrigerants.