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A water dispenser, known as a water cooler (if used for cooling only), is a machine that cools or heats up and dispenses water. 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.
Water Coolers / Water Dispensers come in a variety of form factors, ranging from wall-mounted to bottle filler water dispenser combination units, to bi-level units and other formats. They are generally broken up into two categories: point-of-use (POU) water dispensers and bottled water dispensers. POU water dispensers are connected to a water supply, while bottled water dispensers require delivery (or self-pick-up) of water in large bottles from vendors. Bottled water dispensers can be top-mounted or bottom-loaded, depending on the design of the model.
Bottled water dispensers typically use 11- or 22-liter (5- or 10-gallon) dispensers commonly found on top of the unit. Pressure coolers are a subcategory of water dispensers encompassing drinking water fountains and direct-piping water dispensers. A water cooler may also refer to a primitive device for keeping water cool.
There are also smaller versions of the water coolers where the cooler can be placed directly on top of a table for serving a smaller number of people.
A freestanding design generally involves bottles of water placed spout-down into the dispensing machine.
Water coolers can be directly connected to the in-house water source for continuous dispensing of hot and cold drinking water.
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