A milk cooler, also known as a dairy cooler or milk refrigerator, is a specialized appliance used to store and cool milk. It is commonly found in commercial settings such as grocery stores, cafes, restaurants, and dairy farms.

The primary function of a milk cooler is to maintain the freshness and quality of milk by keeping it at a consistently low temperature. Most milk coolers are designed to operate within a specific temperature range, typically between 32°F (0°C) and 41°F (5°C). This temperature range helps slow down bacterial growth and preserve the milk’s flavor and nutritional value.

Milk coolers come in various sizes and configurations depending on the intended application and storage capacity required. They are typically constructed with insulation and refrigeration components to maintain the desired temperature. Some milk coolers have glass doors or windows, allowing users to see the contents without opening the unit and disrupting the temperature.