Free delivery When you spend £25

20,000+ products Now available

500+ UK Branches

Back to Plumbing

Water Heaters

Find the right water heater for your home when you browse our selection at Toolstation, with products available from many trusted brands. Whether you’re looking for an electric water heater, under-sink water heater or over-sink water heater, we’ve got options to suit all budgets and homes. How does water heating work? An electric hot water heater is an instant water heater that can be fitted to any plumbing appliances in your home, from sinks to baths and showers. Unlike gas water heaters, an electric hot water heater doesn’t require additional piping or ventilation, making installation more straightforward. What size water heater do I need? Every home will require a different size water heater, depending on your hot water usage. As a guide, allow an average of 30-50 litres per person when working out which water heater will best suit you. Installing an electric instant water heater can be a cost-effective and energy-efficient investment for any home.

See also

Gas Fittings

Push Fit Tap Connectors

Push Fit Tap Connectors

Brass Compression Fittings

Brass Compression Fittings

Products per page:

Sort:

View

Filter by

Ariston Ariston Andris R 10L Under Sink Water Heater 2kW - 13430 - from Toolstation

( 11 )

Product code: 13430 Ariston Andris R 10L Under Sink Water Heater 2kW

£89.98 was £119.99

ex. VAT £74.98

Each

Small electric storage water heater. Available in 2 or ...Read more

qty

Select from 1 variation

Ariston Ariston Andris R 10L Under Sink Water Heater 3kW - 48949 - from Toolstation

( 4 )

Product code: 48949 Ariston Andris R 10L Under Sink Water Heater 3kW

£101.98 was £129.99

ex. VAT £84.98

Each

Small electric storage water heater. Available in 2 or ...Read more

qty

Select from 1 variation

Ariston Ariston Andris R 15L Under Sink Water Heater 2kW - 96786 - from Toolstation

( 11 )

Product code: 96786 Ariston Andris R 15L Under Sink Water Heater 2kW

£98.98 was £124.99

ex. VAT £82.48

Each

Small electric storage water heater. Available in 2 or ...Read more

qty

Select from 1 variation

Ariston Ariston Andris R 15L Under Sink Water Heater 3kW - 80147 - from Toolstation

( 2 )

Product code: 80147 Ariston Andris R 15L Under Sink Water Heater 3kW

£109.98 was £139.99

ex. VAT £91.65

Each

Small electric storage water heater. Available in 2 or ...Read more

qty

Select from 1 variation

Redring Redring Powerstream Instantaneous Water Heater 9.5kW - 65189 - from Toolstation

( 17 )

Product code: 65189 Redring Powerstream Instantaneous Water Heater 9.5kW

£129.98

ex. VAT £108.32

Each

• 9.5kW rated for hand wash use • Point of use water h ...Read more

qty

Redring Redring Instantaneous Manual Electric Handwash 3kW - 40656 - from Toolstation

( 22 )

Product code: 40656 Redring Instantaneous Manual Electric Handwash 3kW

£57.98

ex. VAT £48.32

Each

• Economical and instant 3kW rated hand wash • Manuall ...Read more

qty

Redring Redring Stored Undersink 6L Water Heater 1.5kW - 28785 - from Toolstation

( 30 )

Product code: 28785 Redring Stored Undersink 6L Water Heater 1.5kW

£85.98

ex. VAT £71.65

Each

• Economical and instant 1.5kW rated hand wash • 6 lit ...Read more

qty

Ariston Ariston Aures Slim Instantaneous Water Heater 9.5kW - 75941 - from Toolstation

( 13 )

Product code: 75941 Ariston Aures Slim Instantaneous Water Heater 9.5kW

£77.98 was £97.99

ex. VAT £64.98

Each

Compact water heater supplies one or several water outl ...Read more

qty

Stiebel Eltron Stiebel Eltron Hand Wash Unit 3kW - 69896 - from Toolstation

( 10 )

Product code: 69896 Stiebel Eltron Hand Wash Unit 3kW

£53.99

ex. VAT £44.99

Each

Instantaneous water heater for over sink • Variable te ...Read more

qty

Ariston Ariston Andris Expansion Vessel & Non-Return Valve KIT A - 26919 - from Toolstation

( 3 )

Product code: 26919 Ariston Andris Expansion Vessel & Non-Return Valve KIT A

£42.98 was £53.99

ex. VAT £35.82

Each

2 litre expansion vessel prevents any build-up of press ...Read more

qty

Ariston Ariston Andris Discharge Tundish KIT C - 80886 - from Toolstation

( 1 )

Product code: 80886 Ariston Andris Discharge Tundish KIT C

£11.98 was £14.98

ex. VAT £9.98

Each

In the event the hot water system over pressurises, wat ...Read more

qty

Triton Showers Triton T30I Instaflow Handwash 3kW - 50110 - from Toolstation

( 6 )

Product code: 50110 Triton T30I Instaflow Handwash 3kW

£74.99

ex. VAT £62.49

Each

New and improved T30I handwash. All the great features ...Read more

qty

Ariston Ariston Andris 3.5 Pressure Reducing Valve KIT B - 44714 - from Toolstation

( 1 )

Product code: 44714 Ariston Andris 3.5 Pressure Reducing Valve KIT B

£37.98 was £47.58

ex. VAT £31.65

Each

The maximum cold water inlet pressure designed for the ...Read more

qty

Stiebel Eltron Stiebel Eltron Vented Point of Use Water Heater 5L 2kW - 65881 - from Toolstation

( 10 )

Product code: 65881 Stiebel Eltron Vented Point of Use Water Heater 5L 2kW

£104.94

ex. VAT £87.45

Each

Variable temperature setting 35 to 85°C. Temperature li ...Read more

qty

Redring Redring Instantaneous Auto Sensor Electric Handwash 3kW - 83304 - from Toolstation

( 2 )

Product code: 83304 Redring Instantaneous Auto Sensor Electric Handwash 3kW

£109.98

ex. VAT £91.65

Each

• Economical and instant 3kW rated hand wash • No touc ...Read more

qty

Stiebel Eltron Stiebel Eltron Electronic Instantaneous Water Heater 12.0kW - 47761 - from Toolstation

( 7 )

Product code: 47761 Stiebel Eltron Electronic Instantaneous Water Heater 12.0kW

£239.98

ex. VAT £199.98

Each

• Temperature select from 32 to 60°C • Temperature lim ...Read more

qty

Select from 1 variation

Stiebel Eltron Stiebel Eltron Electronic Instantaneous Water Heater 9.6kW - 41729 - from Toolstation

( 6 )

Product code: 41729 Stiebel Eltron Electronic Instantaneous Water Heater 9.6kW

£199.98

ex. VAT £166.65

Each

• Temperature select from 32 to 60°C • Temperature lim ...Read more

qty

Select from 1 variation

Triton Showers Triton Instaflow Stored Water Heater 5L 1.5kW - 91373 - from Toolstation

Product code: 91373 Triton Instaflow Stored Water Heater 5L 1.5kW

£109.98

ex. VAT £91.65

Each

Providing higher flow rates than an instantaneous water ...Read more

qty

Triton Showers Triton Instaflow Stored Water Heater 15L 2kW - 57501 - from Toolstation

Product code: 57501 Triton Instaflow Stored Water Heater 15L 2kW

£139.98

ex. VAT £116.65

Each

Providing higher flow rates than an instantaneous water ...Read more

qty

Select from 1 variation

Stiebel Eltron Stiebel Eltron Mini Instantaneous Water Heater 4.4kW - 63421 - from Toolstation

( 3 )

Product code: 63421 Stiebel Eltron Mini Instantaneous Water Heater 4.4kW

£149.99

ex. VAT £124.99

Each

• No standby energy consumption • Compact design • Un ...Read more

qty

Select from 1 variation

Ferroli Ferroli Cubo Undersink Water Heater 10L - 72504 - from Toolstation

( 4 )

Product code: 72504 Ferroli Cubo Undersink Water Heater 10L

£81.98

ex. VAT £68.32

Each

Small capacity electric water heater. • External cas ...Read more

qty

Select from 1 variation

Ferroli Ferroli Cubo Oversink Water Heater 10L - 27091 - from Toolstation

( 1 )

Product code: 27091 Ferroli Cubo Oversink Water Heater 10L

£81.98

ex. VAT £68.32

Each

Small capacity electric water heater. • External casin ...Read more

qty

Select from 1 variation

Ferroli Ferroli Cubo Oversink Water Heater 15L - 17880 - from Toolstation

( 2 )

Product code: 17880 Ferroli Cubo Oversink Water Heater 15L

£91.98

ex. VAT £76.65

Each

Small capacity electric water heater. • External casin ...Read more

qty

Select from 1 variation

Ferroli Ferroli Cubo Undersink Water Heater 15L - 35012 - from Toolstation

( 1 )

Product code: 35012 Ferroli Cubo Undersink Water Heater 15L

£91.98

ex. VAT £76.65

Each

Small capacity electric water heater. • External cas ...Read more

qty

Select from 1 variation

Hey, browse our site often?

ADD TO HOME SCREEN