What advantage do glass door frozen food cases have over open display frozen food cases?

The advantage of glass door frozen food cases over open display frozen food cases lies in their greater energy efficiency. Glass doors help maintain a stable internal temperature by minimizing the amount of warm air that enters the unit when customers open the door. This design reduces the workload on the refrigeration system, leading to lower energy consumption and more efficient operation. By keeping the cold air contained, these cases are better at preserving the quality of the frozen foods within and at maintaining optimal energy use.

In contrast, open display cases allow for more air exchange, which results in increased energy costs and less efficient refrigeration performance. While other factors, such as product visibility and accessibility, may differ, the significant energy efficiency offered by glass door cases is a key advantage.