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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Description Prix Water Capacity Power Rating Supply Voltage Connection Maximum Working Pressure Thread Size Thread Standard Maximum Operating Temperature Product Depth Product Height Type
N° de stock RS 875-0267
Référence fabricant43679901
MarqueRedring
159,70 €
Each
Unité
- 3kW - - 7 bar - - - 83.5mm 228.5mm -
N° de stock RS 124-1513
Référence fabricant47789201
MarqueRedring
387,01 €
Each
Unité
15L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 300mm 360mm Unvented Water Storage Heater
N° de stock RS 282-6365
Référence fabricantRP12 Powerstream
MarqueRedring
245,68 €
Each
Unité
- 12kW 240 V 3/8 in BSP - 3/8in BSP - - - -
N° de stock RS 124-1514
Référence fabricant47789301
MarqueRedring
247,16 €
Each
Unité
10L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 254mm 360mm Unvented Water Storage Heater
N° de stock RS 875-0264
Référence fabricant43678901
MarqueRedring
82,30 €
Each
Unité
- 3kW - - 7 bar - - - 83.5mm 228.5mm -
N° de stock RS 124-3835
Référence fabricant45673201
MarqueRedring
158,65 €
Each
Unité
- 9.5kW - - 10 bar - - - 84mm 160mm Unvented Water Storage Heater
N° de stock RS 273-090
Référence fabricant45-793201
MarqueRedring
223,57 €
Each
Unité
- 9.5kW 240 V 3/8 in BSP 10 bar 3/8in BSP - - - -
N° de stock RS 124-1512
Référence fabricant47789101
MarqueRedring
351,83 €
Each
Unité
10L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 254mm 360mm Unvented Water Storage Heater
N° de stock RS 124-1515
Référence fabricant47789401
MarqueRedring
270,54 €
Each
Unité
15L 3kW 240 V 1/2 in BSP 12 bar 1/2in BSP +70°C 300mm 360mm Unvented Water Storage Heater
N° de stock RS 124-3839
Référence fabricant47789601
MarqueRedring
151,77 €
Each
Unité
15L 2kW - 1/2 in G 6 bar 1/2in G +70°C 310mm 410mm Unvented Water Storage Heater
N° de stock RS 124-3838
Référence fabricant47789501
MarqueRedring
139,51 €
Each
Unité
10L 2kW - 1/2 in G 6 bar 1/2in G +70°C 250mm 410mm Unvented Water Storage Heater
N° de stock RS 124-3837
Référence fabricant22679301
MarqueRedring
101,85 €
Each
Unité
6L 1.5kW - 1/2 in BSP Male 8 bar - BSP - 255mm 270mm -
N° de stock RS 124-3836
Référence fabricant45673202
MarqueRedring
166,24 €
Each
Unité
- 10.8kW - - 10 bar - - - 84mm 160mm Unvented Water Storage Heater