Water Heaters Electric
Storage Below 50 L
Free delivery over £50

See Also   Large Storage Cylinders In 'direct' units the water is heated by one or more electric immersion heaters. They come into their own when a gas/oil boiler is either not available or too expensive to install. They are also suitable for a wide range of commercial applications such as hair dressing salons, canteens, shower and washroom areas etc.     Instantaneous Electric  Single phase electric instantaneous water heaters are small electrically powered units that heat water 'instantly' as it flows through the product. Instantaneous water heaters are compact, will not run out of hot water and have no stand-by energy losses but have to be wired to the electric consumer unit.

Sales and Technical 01751 411965
Simple guide to electric water storage heaters up to 50 Litres capacity 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. They may be used to supply more than one outlet using conventional taps but may require additional accessories depending on the installation. Unvented storage heaters above 15L capacity are supplied with accessories. Vented water heaters do not store hot water at mains pressure, but operate instead by using vented (non-standard) taps to control the flow of cold water into the unit which displaces hot water out of the unit through the tap. These units can only supply a single outlet, and expansion of hot water can result in dripping from the hot tap when water is heated. Vented taps are not generally supplied with the heater and can represent a significant additional expense unless already available (for example where a water heater is purchased as a like-for-like replacement).  Combination units have an integral cold header tank and do not need any special valves. All that is required is to connect to the water supply and to power. They are thus ideal when speed and simplicity of installation is the key but they provide poor pressure for showers and have to be wall mounted as high as possible.

  Mains pressure storage units produce excellent flow rates. Most units are 3kW or less enabling simple installation. Multipoint capability with standard taps.

  Vented water heaters operate at low pressure. They can only supply a single outlet and require non-standard 'vented' taps which are normally have to be purchased separately.

  Combination units feature an integral cold header tank and hot water stiorage. Simple to install but hot water pressure can be low.

 Vented taps and accessories.

  Unvented expansion kits and other accessories.

Unvented
Mains Pressure Electric

 Vented
Low Pressure Electric

Combination
Low Pressure Electric

Vented Accessories
Vented Taps Etc

 Unvented Accessories
Expansion Vessels Etc