Top 10 Electric Water Heater

Discover our curated selection of high-quality products.

Last update: 12-07-2026

Best Heating Equipment overall →
1
Ariston ANDRIS LUX ECO 10 L Undersink Electric Water Heater 2.5kW with A Titanium Enamelled Tank, A Class Erp Rating, Copper Heating Element, Manufactured To Be Installed In UK - 3100718 , White
Ariston

Ariston ANDRIS LUX ECO 10 L Undersink Electric Water Heater 2.5kW with A Titanium Enamelled Tank, A Class Erp Rating, Copper Heating Element, Manufactured To Be Installed In UK - 3100718 , White

  • Water heater designed and manufactured to be installed in UK.
  • First in Class ErP rating “A” across all models: With its electronic temperature control and its Eco Evo Function, the Andris Lux Eco is an energy efficient electric water heater boasting an “A” ErP energy rating across the whole range.
  • “Eco Evo” function: Thanks to the ECO EVO function, Andris Lux Eco remembers when and how much hot water you use. In this way the function will not only provide hot water efficiently, buti t will also and above all saving up to 15% on your energy bill.
  • Anti-legionella function for total peace of mind: Once a month, this mini-tank electric water heater automatically increases the water temperature up to 65°C, in order to eliminate the risk of legionella bacteria developing. Ideal for applications such as hospitals, schools and care homes.
  • Eco Display: The unit’s smart, user-friendly display is easy to use and provides precise electronic temperature control, allowing the user to set the desired temperature for every need. The button “ECO” indicates when the Eco Evo Mode is activated and the LED indicator provides a visual guide to the water temperature inside the tank. In yhis way, you can have the hot water you need, when you need it, without any effort.
  • Titanium Enamelled Tank/Enhanced Anti-Corrosion: With its proprietary titanium tank engineering, the Andris Lux Eco boasts exceptional durability and an extended product life. In addition, with its robust 4 bolt flange and copper heating element, this efficient water heater offers improved protection against water corrosion.
  • Ideal Installations: Medical Environments Laboratories School Facilities
  • Fully UKCA certified to be installed in the UK Market.
9.3/10
Editor's Pick
Available at Amazon
2
Stiebel Eltron DCE-X Premium Compact Instant Water Heater, Suitable for Showers, Maximum Energy Efficiency, Accurate Temperature delivery, 238159, 220240 V, White, 10/12 kW

Stiebel Eltron DCE-X Premium Compact Instant Water Heater, Suitable for Showers, Maximum Energy Efficiency, Accurate Temperature delivery, 238159, 220240 V, White, 10/12 kW

  • Fully electronic compact instantaneous water heater with 4i technology
  • Maximum energy efficiency and accurate temperature delivery at all times thanks to fully electronic closed-loop control
  • Easy operation via a large, backlit multifunction display
  • Particularly energy efficient in ECO mode
  • High grade design
9.2/10
Available at Amazon
3
220V 11.8 KW Electric Tankless Water Heater-11.3KW TNKLSS H20 HEATER
Ecosmart

220V 11.8 KW Electric Tankless Water Heater-11.3KW TNKLSS H20 HEATER

  • Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.Amperage Draw : 54 A.Special Features: ‎Energy Efficient
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
  • EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
9.1/10
Available at Amazon
4
Ariston PRO1 ECO 80 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B Class Erp Rating, Waterplus Technology, Titanshield Technology, Manufactured To Be Installed In UK - 3820020. , White
Ariston

Ariston PRO1 ECO 80 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B Class Erp Rating, Waterplus Technology, Titanshield Technology, Manufactured To Be Installed In UK - 3820020. , White

  • Water heater designed and manufactured to be installed in UK.
  • “Eco Evo” Function: The innovative ECO EVO function memorises user habits to deliver hot water while saving up to 14% on energy bills. The product operates in compliance with top standards on energy efficiency within the electric water heating category.
  • WaterPlus patented technology: Ariston's groundbreaking WaterPlus technology keeps the incoming cold water at the bottom of the tank, reducing the mix with stored hot water, for up to 16% more hot water availability.
  • TitanShield technology for tank protection: The inner surface of the tank is enamelled with a layer of titanium, an anti-corrosion and rust-resistant material, which prevents the surface from corroding, even when in contact with warm water. Titanium’s natural properties are boosted by the action of a large magnesium anode that stops the oxidation reactions on the tank’s inner surface, prolonging the life of the water heater.
  • Total Safety: Pro 1 water heaters have passed all safety tests necessary to meet the standards required by EC directives. The ABS safety package offers protection for both the product and its users. Furthermore, the included Anti Legionella system performs a complete cycle of heating to a temperature of 65° C to sanitize and remove any bacteria present in the accumulated water.
  • Suitable to any space: Pro1, with a width of only 35,3 cm, has been designed to fit any space. The innovative installation kit allows the replacement of the boiler (of the same dimensions) without having to drill the wall again.
  • Ideal Installations: 1-2 Bedroom Properties Small Hospitality & Retail Units Cylinder Replacement Installations
  • Fully UKCA certified to be installed in the UK Market.
9.0/10
Available at Amazon
5
Ariston AURES Multi Electric Instantaneous Water Heater 9.5kW, Multi-Point, Compact Size, ELCB System, User-Friendly and A Energy Rated. Manufactured to be Installed in UK – 3195216.
Ariston

Ariston AURES Multi Electric Instantaneous Water Heater 9.5kW, Multi-Point, Compact Size, ELCB System, User-Friendly and A Energy Rated. Manufactured to be Installed in UK – 3195216.

  • Instant electric water heater designed and produced for installation in the UK. Awarded the Good Design Award in 2019
  • Multi-Point: Aures Multi can supply multiple outlets with hot water (not simultaneously) upon point of use. New Italian premium design
  • Total Safety: Its Double Pole Earth Leakage Circuit Breaker (ELCB) prevents electric shocks, integrating with a total safety device system that avoids damage to the product. If a dangerous voltage is detected, the device will interrupt the electrical circuit as a safety measure.
  • Small Size: Aures Multi saves space, no pre-heat time or water storage space required. Aures Multi is ideal for installations in small, narrow spaces like utility rooms, garages, conservatories, kitchens, and bathrooms.
  • Quick Comfort: The Aures Multi electric instantaneous water heater delivers hot water within seconds due to its effective heating element which heats water instantly.
  • Easy to Use: Aures Multi includes a user-friendly frontal dial and LED lights which make the product setup incredibly simple. Because of its flow sensor system, the product works only when a tap is open.
  • Highly Energy Efficient: The product offers a super efficient performance, lower energy usage and emissions, which give it an 'A' class ErP rating. Its 4-step frontal & intuitive power dial can be set to the level the user wants. Aures Multi is incredibly easy to maintain as all internal components can be accessed through the front.
9.0/10
Available at Amazon
6
T30I 3KW
Triton Showers

T30I 3KW

  • Single control for start/stop and temperature selectio
  • Heats water on demand - ideal for handwashing where only a cold mains water supply is available
  • Quick and easy to install
  • Direct replacement to the Triton T30I
8.9/10
Bestseller
Available at Amazon
7
Rheem 18kW 240V Tankless Electric Water Heater
Rheem

Rheem 18kW 240V Tankless Electric Water Heater

  • External digital thermostatic control with LED display (+/1 degree accuracy)
  • Most advanced self-modulation, adjust power to meet hot water demand
  • Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
  • Simple installation – bottom 3/4 inch NPT water connections
  • Threaded for easy replacement, simple installation, digital temperature display
8.8/10
Available at Amazon
8
Ariston Andris White 6L Undersink Electric Water Heater 1.5kW 3626292 - Hanicks
Hanicks

Ariston Andris White 6L Undersink Electric Water Heater 1.5kW 3626292 - Hanicks

  • Undersink. Frontal knob for easy temperature regulation. Robust internal 4-bolt flange for increased durability.
  • Regulation & Safety Thermostat | Overheat Cut-Out Protection | Environmentally Sound & Efficient Thermal Insulation
  • 3 Year Manufacturers Guarantee | Modern & Compact Design
  • ‘E’ (Economy) setting on the dial to optimise comfort and energy saving: Thanks to the Economy setting, Andris Lux uses the most economical temperature level at 60°C in order to provide hot water while saving energy.
  • Titanium enamelled tank and 4-bolt flange for robustness and durability: With its proprietary titanium tank engineering, the Andris Lux boasts exceptional durability and an extended product life. In addition, with its robust 4 bolt flange and copper heating element, this efficient water heater offers improved protection against water corrosion.
  • Wall-Mounted, Suitable for Domestic & Commercial Use | Installation in 10 easy steps
  • Water heater designed and manufactured to be installed in UK.
  • Compact Dimensions and Maximum Comfort: With its compact dimensions, Andris Lux is perfect for applications where space is at a premium, such as bathrooms, kitchens, annexes and garages. All models in the range are highly durable and easy to use. High-quality insulation enables hot water to be kept at the desired temperature for a long period of time, saving money on energy bills.
  • Easy to Operate: The mechanical dial allows a fast and easy temperature control just by turning the knob. The red heating lamp shows the heating process in action.
  • Dimensions (H)315 mm x (W)315 mm x (D)250 mm
8.6/10
Available at Amazon
9
Ariston Andris Lux 10L Under-Sink Unvented Electric Water Heater, 2kW 3100306 - Hanicks
Hanicks

Ariston Andris Lux 10L Under-Sink Unvented Electric Water Heater, 2kW 3100306 - Hanicks

  • Undersink. Frontal knob for easy temperature regulation. Robust internal 4-bolt flange for increased durability.
  • Wall-Mounted, Suitable for Domestic & Commercial Use
  • Regulation & Safety Thermostat | Overheat Cut-Out Protection | Environmentally Sound & Efficient Thermal Insulation
  • 3 Year Manufacturers Guarantee | Modern & Compact Design
8.5/10
Available at Amazon
10
Ariston Andris R, Undersink Electric Water Heater, 3kW, Control Unit, B Class ErP Rating, Economy E Setting, Manufactured to be Installed in UK - 3100832, Black, 10 Litre
Ariston

Ariston Andris R, Undersink Electric Water Heater, 3kW, Control Unit, B Class ErP Rating, Economy E Setting, Manufactured to be Installed in UK - 3100832, Black, 10 Litre

  • Water heater designed and manufactured to be installed in UK
  • B class ErP rating
  • Economy' setting on the dial to optimise comfort and energy saving
  • Titanium enamelled tank for durability: This premium quality water heater the best tank protection with the properties of titanium, wich constitutes a perfect shield against corrosion. Every single component is developed to ensure longlasting high performance with the guarantee of Ariston Brand
  • Maximum Comfort: Andris series products are able to keep the water hot for a long time thanks to the thick high-density polyurethane insulation placed in the tank and the outside of the water heater. It provides an effective barrier against heat losses, optimizing both the performance of the product and the users’ comfort. The models of the Andris series are equipped with an immersion thermostat, which allows a very precise adjustment of the water temperature, heating it to the desired point
  • Installation kits to be purchased separately
8.4/10
Available at Amazon

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