water dispenser, known as water cooler (if used for cooling only), is a machine that cools or heats up and dispenses water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing. A drain line is also provided from the water cooler into the sewer system.

A water dispenser, known as water cooler (if used for cooling only), is a machine that cools or heats up and dispenses water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing.

the cooler has four major components: the compressor, the condenser, the expansion valve and the evaporator. First, the low-pressure and low-temperature refrigerant gas is pumped into the compressor.