Water dispensers, also known as water coolers or water machines, are appliances that dispense clean and chilled water. They are commonly used in homes, offices, and public places to provide easy access to clean drinking water. Some models also have the ability to dispense hot water for tea or coffee. They come in different sizes and styles, including countertop, freestanding, and built-in options. Some models also have additional features such as water filtration, UV sterilization and self-cleaning functions to ensure the water dispensed is clean and safe to drink.