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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.
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Triton Showers
Triton Showers / Triton Instaflow Stored Water Heater
Save £30
( 1 )
Product code: 57501
Triton Instaflow Stored Water Heater 15L 2kW
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Providing higher flow rates than an instantaneous Read more

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Triton Showers
Triton Showers / Triton Instaflow Stored Water Heater
20% Off
( 4 )
Product code: 91373
Triton Instaflow Stored Water Heater 5L 1.5kW
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Each

Providing higher flow rates than an instantaneous Read more

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Triton Showers
Triton Showers / Triton Instaflow Stored Water Heater
Save £28
Product code: 96842
Triton Instaflow Stored Water Heater 10L 2kW
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Each

Providing higher flow rates than an instantaneous Read more

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Redring
Redring / Redring Instantaneous Manual Electric Handwash
( 42 )
Product code: 40656
Redring Instantaneous Manual Electric Handwash 3kW
ex. VAT
Each

• Economical and instant 3kW rated hand wash• Ma Read more

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Redring
Redring / Redring Stored Undersink 6L Water Heater
( 53 )
Product code: 28785
Redring Stored Undersink 6L Water Heater 1.5kW
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Each

• Economical and instant 1.5kW rated hand wash• Read more

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Triton Showers
Triton Showers
Triton Showers / Triton T30I Instaflow Handwash
( 14 )
Product code: 50110
Triton T30I Instaflow Handwash 3kW
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Each

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

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Ariston
Ariston / Ariston Andris R 15L Under Sink Water Heater
( 24 )
Product code: 96786
Ariston Andris R 15L Under Sink Water Heater 2kW
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Each

Small electric storage water heater. Available in Read more

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Ariston
Ariston / Ariston Aures Multi Instantaneous Water Heater
( 7 )
Product code: 82443
Ariston Aures Multi Instantaneous Water Heater 9.5kW
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Each

• Multi-point model to supply multiple water outle Read more

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Ariston
Ariston / Ariston Andris R 10L Under Sink Water Heater
( 28 )
Product code: 13430
Ariston Andris R 10L Under Sink Water Heater 2kW
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Small electric storage water heater. Available in Read more

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Stiebel Eltron
Stiebel Eltron / Stiebel Eltron Vented Point of Use Water Heater
( 20 )
Product code: 65881
Stiebel Eltron Vented Point of Use Water Heater 5L 2kW
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Each

Variable temperature setting 35 to 85°C. Temperatu Read more

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Redring
Redring / Redring Powerstream Instantaneous Water Heater
( 27 )
Product code: 65189
Redring Powerstream Instantaneous Water Heater 9.5kW
ex. VAT
Each

• 9.5kW rated for hand wash use• Point of use wa Read more

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Ferroli
Ferroli / Ferroli Cubo Undersink Water Heater
( 5 )
Product code: 72504
Ferroli Cubo Undersink Water Heater 10L
ex. VAT
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Small capacity electric water heater.• Externa Read more

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Triton Showers
Triton Showers
Triton Showers / Triton Instaflow Multi Point Instantaneous Water Heater
( 2 )
Product code: 50451
Triton Instaflow Multi Point Instantaneous Water Heater 10.1kW
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The first multipoint undersink water heater from T Read more

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Stiebel Eltron
Stiebel Eltron / Stiebel Eltron Electronic Instantaneous Water Heater
( 12 )
Product code: 47761
Stiebel Eltron Electronic Instantaneous Water Heater 12.0kW
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• Temperature select from 32 to 60°C• Temperatur Read more

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Stiebel Eltron
Stiebel Eltron / Stiebel Eltron DCE-X 10/12 Premium
Product code: 65833
Stiebel Eltron DCE-X 10/12 Premium 10-12kW
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Each

• Fully electronic instantaneous water heater with Read more

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Stiebel Eltron
Stiebel Eltron / Stiebel Eltron Mini Instantaneous Water Heater
( 5 )
Product code: 63421
Stiebel Eltron Mini Instantaneous Water Heater 4.4kW
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Each

• No standby energy consumption• Compact design Read more

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Stiebel Eltron
Stiebel Eltron / Stiebel Eltron Electronic Instantaneous Water Heater
( 10 )
Product code: 41729
Stiebel Eltron Electronic Instantaneous Water Heater 9.6kW
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• Temperature select from 32 to 60°C• Temperatur Read more

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Ariston
Ariston / Ariston Andris Expansion Vessel & Non-Return Valve
( 9 )
Product code: 26919
Ariston Andris Expansion Vessel & Non-Return Valve KIT A
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Each

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

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Ariston
Ariston
Ariston / Ariston Andris R 10L Under Sink Water Heater
( 7 )
Product code: 48949
Ariston Andris R 10L Under Sink Water Heater 3kW
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Small electric storage water heater. Available in Read more

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Ferroli
Ferroli / Ferroli Cubo Undersink Water Heater
( 3 )
Product code: 35012
Ferroli Cubo Undersink Water Heater 15L
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Small capacity electric water heater.• Externa Read more

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Ariston
Ariston / Ariston Andris R 15L Under Sink Water Heater
( 3 )
Product code: 80147
Ariston Andris R 15L Under Sink Water Heater 3kW
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Small electric storage water heater. Available in Read more

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Ferroli
Ferroli / Ferroli Cubo Oversink Water Heater
( 1 )
Product code: 27091
Ferroli Cubo Oversink Water Heater 10L
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Small capacity electric water heater.• Externa Read more

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Ferroli
Ferroli / Ferroli Cubo Oversink Water Heater
( 4 )
Product code: 17880
Ferroli Cubo Oversink Water Heater 15L
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Small capacity electric water heater.• External Read more

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Redring
Redring / Redring Instantaneous Auto Sensor Electric Handwash
( 2 )
Product code: 83304
Redring Instantaneous Auto Sensor Electric Handwash 3kW
ex. VAT
Each

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

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