All commercial kitchens require a refrigeration unit of some type. Refrigerating food items prevents them from perishing quickly, preserves freshness, and provides cold food storage space. Industrial grade refrigeration units are designed to meet the unique needs of the food industry, so they are a key purchase for any food handling operation. There are many varieties of coolers and freezers available, but your purchasing decisions will generally involve two types: reach-in or walk-in units. Before making a decision, consider the size of your operation. Although they have larger cold storage space and can be custom built to fit any kitchen, smaller restaurants may not require a walk-in cooler. There are even outdoor refrigeration and freezing options available if interior space is an issue. Regardless of the type you choose, your cooling unit will be essential to your business. Seek professional help for installation and make sure you know how to properly maintain your unit as it can be costly to repair.