Washroom Water Heaters

Over sink water heaters typically come in two varieties: storage water heaters, with various litre capacities and tankless water heaters. Storage water heaters store and repeatedly heat water within a tank, while tankless water heaters instantly heat the water as it flows through the device, and do not retain any water internally except for what is in the heat exchanger coil. They are typically used to provide hot water for sink taps and shower heads.

How do over sink water heaters work?

With traditional storage water heaters, once the water stored inside the tank has been heated, it may be streamed until it is depleted, at which point the new supply of water must be heated. With these heating devices, over sink water heaters tend to have a smaller tank than a typical boiler.

Tankless water heaters are typically installed near their point of use. Unlike storage water heaters, these devices offer a plentiful continuous flow of hot water and potential energy savings thanks to their greater efficiency.

Types of over sink water heaters

Certain models of over sink water heaters are intended to be installed in specific locations, such as under a sink. Many, but not all, feature a component for temperature control such as a knob. They are available to buy with different litre capacities depending upon your requirements.

All water heaters that burn gas need to be adequately vented.


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Omschrijving Prijs Water Capacity Power Rating Supply Voltage Connection Maximum Working Pressure Thread Size Thread Standard Maximum Operating Temperature Product Depth Product Height Type
RS-stocknr. 875-0267
Fabrikantnummer43679901
FabrikantRedring
159,70 €
Each
Aantal stuks
- 3kW - - 7 bar - - - 83.5mm 228.5mm -
RS-stocknr. 124-1513
Fabrikantnummer47789201
FabrikantRedring
387,01 €
Each
Aantal stuks
15L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 300mm 360mm Unvented Water Storage Heater
RS-stocknr. 875-0264
Fabrikantnummer43678901
FabrikantRedring
82,30 €
Each
Aantal stuks
- 3kW - - 7 bar - - - 83.5mm 228.5mm -
RS-stocknr. 124-1515
Fabrikantnummer47789401
FabrikantRedring
270,54 €
Each
Aantal stuks
15L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 300mm 360mm Unvented Water Storage Heater
RS-stocknr. 282-6365
FabrikantnummerRP12 Powerstream
FabrikantRedring
245,68 €
Each
Aantal stuks
- 12kW 240 V 3/8 in BSP - 3/8in BSP - - - -
RS-stocknr. 124-1512
Fabrikantnummer47789101
FabrikantRedring
351,83 €
Each
Aantal stuks
10L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 254mm 360mm Unvented Water Storage Heater
RS-stocknr. 124-1514
Fabrikantnummer47789301
FabrikantRedring
247,16 €
Each
Aantal stuks
10L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 254mm 360mm Unvented Water Storage Heater
RS-stocknr. 273-090
Fabrikantnummer45-793201
FabrikantRedring
223,57 €
Each
Aantal stuks
- 9.5kW 240 V 3/8 in BSP 10 bar 3/8in BSP - - - -
RS-stocknr. 124-3837
Fabrikantnummer22679301
FabrikantRedring
101,85 €
Each
Aantal stuks
6L 1.5kW - 1/2 in BSP Male 8 bar - BSP - 255mm 270mm -
RS-stocknr. 124-3839
Fabrikantnummer47789601
FabrikantRedring
151,77 €
Each
Aantal stuks
15L 2kW - 1/2 in G 6 bar 1/2in G +70°C 310mm 410mm Unvented Water Storage Heater
RS-stocknr. 124-3838
Fabrikantnummer47789501
FabrikantRedring
139,51 €
Each
Aantal stuks
10L 2kW - 1/2 in G 6 bar 1/2in G +70°C 250mm 410mm Unvented Water Storage Heater
RS-stocknr. 124-3836
Fabrikantnummer45673202
FabrikantRedring
166,24 €
Each
Aantal stuks
- 10.8kW - - 10 bar - - - 84mm 160mm Unvented Water Storage Heater
RS-stocknr. 124-3835
Fabrikantnummer45673201
FabrikantRedring
158,65 €
Each
Aantal stuks
- 9.5kW - - 10 bar - - - 84mm 160mm Unvented Water Storage Heater