SDLX240 Blue Star Water Cooler

A water dispenser, known as water cooler (if used for cooling only), is a machine that dispenses and often also cools or heats up water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing.n water cooled systems a liquid, usually water, is pumped through pipes. The liquid takes the heat from the components and dissipates it in a radiator. It operates on the same principal as the engine cooling system in a car where coolant is pumped through the engine and to the radiator.