* The brands in the survey include Frigidaire, GE, Kenmore, KitchenAid, LG, Maytag, Samsung, Whirlpool, and many more. * t really comes down to personal preference and the types of foods you buy and store in a refrigerator or freezer. Refrigerators also vary widely in size and required clearance space. ... Average refrigerator capacity ranges between 9 and 30 cubic feet. A family of two needs 8 to 10 cubic feet of fresh-food space. * To ensure that your refrigerator is doing its job, it's important to keep its temperature at 40 °F or below; the freezer should be at 0 °F. Since few refrigerator controls show actual temperatures, using an inexpensive freestanding appliance thermometer will allow you to monitor the temperature and adjust the setting