Water Heaters Electric
Over-Sink for Hand Washing
Free delivery over £50 

See Also   Small Undersink Storage   Unvented 'mains pressure' units below 50L capacity are electrically heated and operate at the same mains pressure as the incoming cold water supply (typically 3 bar or so) and therefore provide excellent hot water flow rates.  

Sales and Technical 01751 411965
Simple guide to electric water heaters used for hand washing If you just need enough hot water for occasional handwashing at a single sink, an instant water heater is a good place to start. These are small electrically powered units that heat water 'instantly' as it flows through the product. Instant water heaters have the advantages of being compact, relatively cheap to buy and easy to install above a sink but they can only serve one sink and they can normally only heat water relatively slowly as hot water flow rates are limited by the electrical power rating.  This means that you might have to accept quite a slow flow rate when the incoming water is very cold,  for example in winter. If your typical application is dish washing at a single sink, you will need larger quantities of hot water at a time than an instant water heater can easily supply. In this case a storage water heater is likely to be the best option. These pre-heat a quantity of water in a tank for later draw-off. Over-sink storage water heaters are economical and easiest to install. These are mounted over a sink and are supplied complete with a valve and a spout. However you are usually limited to locating them above a sink and you can also only serve one sink at a time. 

 Storage oversink units can supply hot water quickly, but because hot water is stored within the unit they tend to be larger in size. Simple installation.   Instantaneous units heat water without storing it. This enables them to be compact in size, but flow rates are limted by the electrical power. Units over 3kW have to be wired to the consumer unit as per a shower.

 Spouts and other accessories.

 

  Spouts and other accessories.

Storage
Higher Flow Rate & Size

Instantaneous
Lower Flow Rate & Size

Storage Accessories
Spouts etc

Instantaneous Accessories
Spouts etc