Here are some key terms that are often used to describe common parts and features found in a water cooler:

Water Reservoir

An internal water storage tank that holds water that immediately passes through the cooler motor either for chilling or heating


A small regulator “tap” which controls the flow of water from the water cooler

On/off switch

The button that controls the cooling and/or heating functions of the dispenser

Drip tray

A small plastic water tray found under the dispenser buttons or drinking water faucet designed to catch water drips and overflow from cups.

Cup dispenser

An internal or external cup holder to store and dispense drinking cups quickly and easily

Cooler hood

A fabric based “hood” designed to go over the water bottle above the cooler and product the water from potentially harmful UV rays

Water block & reset

Fitted between the water supply and the water cooler. In the unlikely event that the pipe work fails or your machine is badly damaged this will shut off the water.

Double check valve

An anti-surge valve designed to prevent any problems as a result of a mains water supplier burst water main or temporary supply disruption.
Pressure regulating valve

Installed to protect the water cooler should there be an unexpected rise in water pressure.

Leak detector

Normally, fitted as an optional extra to detect any leak inside your water cooler


Filtration is the process of passing water through a medium to remove suspended particles.  


Carbon is an extremely porous material that attracts and holds a wide range of harmful contaminants. Activated carbon is carbon which has a slight electro-positive charge added to it, making it even more attractive to chemicals and impurities.