A refrigerator is an essential household appliance designed to preserve food and beverages by maintaining a cool temperature, typically between 35°F and 38°F (1.7°C and 3.3°C). Utilizing a refrigeration cycle, it removes heat from the interior to keep items fresh and prevent spoilage. Modern refrigerators come in various styles, including top-freezer, bottom-freezer, side-by-side, and French door designs, often equipped with features such as adjustable shelves, ice makers, and temperature controls for optimal food storage.