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Ariston Water Heaters Comparison - April 2026

7 Best Ariston Water Heaters In the UK

1
Best Choice
9.9Exceptional
2
9.7Exceptional
3
9.4Excellent
4
Best Value
9.2Excellent
5
9.0Excellent
6
8.9Very Good
7
8.6Very Good
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Model

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
Model
Ariston PRO1 ECO 50 L Electric Storage Water Heater with A 50 L, Inclusive Of Unvented Kit, B Class Erp Rating, Waterplus Technology, Manufactured To Be Installed In UK - 3820019. , White
Model
Ariston ANDRIS R 15 L Undersink Electric Water Heater, 3kW, Control Unit, B class ErP rating, Economy “E” Setting, Manufactured to be installed in UK - 3100834.
Model
Ariston ANDRIS R 15 Litre Undersink Electric Water Heater 2kW, Control Unit, B class ErP rating, Economy “E” Setting, Manufactured to be installed in UK - 3100864
Model
Ariston VELIS EVO WIFI 45L Electric Water Heater, Twin Tank Technology, B Class ErP, Aqua Ariston Net App, Ideal Electric Heater for Home & Bathroom Heater, Water Boiler, Unvented Kit, UK Install
Model
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.
Model
Ariston ANDRIS R 10 L Undersink Electric Water Heater, 2kW Control Unit, B class ErP rating, Economy “E” Setting, Manufactured to be installed in UK - 3100863.

Brand

Ariston
Brand
Ariston
Brand
Ariston
Brand
Ariston
Brand
Ariston
Brand
Ariston
Brand
Ariston

Reviews

70 reviews
Reviews
54 reviews
Reviews
112 reviews
Reviews
112 reviews
Reviews
44 reviews
Reviews
390 reviews
Reviews
112 reviews

Features

Easy installation

9.3
Easy installation
9.1
Easy installation
9.4
Easy installation
9.8
Easy installation
8.6
Easy installation
7.7
Easy installation
9.9

Lasts a long time

9.6
Lasts a long time
9.4
Lasts a long time
9.8
Lasts a long time
9.6
Lasts a long time
8.9
Lasts a long time
7.0
Lasts a long time
9.8

Tech Specs

product dimensions

‎47 x 48 x 81 cm; 29.6 kg
product dimensions
47 x 48 x 60.5 cm 24.6 kg
product dimensions
34.6 x 34.6 x 38.5 cm 7.5 kg
product dimensions
34.6 x 34.6 x 38.5 cm 8.14 kg
product dimensions
50.6 x 50.6 x 77.6 cm 29.4 kg
product dimensions
30.4 x 30.4 x 22 cm 2.02 kg
product dimensions
29.8 x 29.8 x 38.5 cm 7.19 kg

item weight

‎29.6 kg
item weight
24.6 kg
item weight
7.5 kg
item weight
8.14 kg
item weight
29.4 kg
item weight
2.02 kg
item weight
7.19 kg

color

‎White
color
White
color
Silver, Black
color
Black
color
Brushed Metal
color
White
color
White

special features

‎Eco Evo Function, WaterPlus Technology, TitanShield Technology
special features
-
special features
Fast Heating
special features
Fast Heating
special features
-
special features
-
special features
Fast Heating

included components

‎12L expansion vessel, combination valve, discharge tundish, instruction manual, warranty certificate
included components
12L expansion vessel, combination valve, discharge tundish, instruction manual, warranty certificate
included components
-
included components
-
included components
12L expansion vessel, combination valve, discharge tundish, instruction manual, warranty certificate
included components
User Manual and Instructions Manual
included components
-

item package quantity

‎1
item package quantity
1
item package quantity
-
item package quantity
-
item package quantity
1
item package quantity
1
item package quantity
-

batteries required

‎No
batteries required
No
batteries required
-
batteries required
-
batteries required
No
batteries required
No
batteries required
-

voltage

‎240 Volts
voltage
240 Volts
voltage
-
voltage
-
voltage
240 Volts
voltage
-
voltage
-

size

‎80 Litre
size
50 Litre
size
-
size
-
size
45 L
size
-
size
-

energy efficiency class

-
energy efficiency class
-
energy efficiency class
A to G
energy efficiency class
A to G
energy efficiency class
-
energy efficiency class
-
energy efficiency class
A to G

power wattage

-
power wattage
-
power wattage
3 KW
power wattage
2 KW
power wattage
-
power wattage
-
power wattage
2 KW

Available On

Available On
Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.9
    1
    Ariston
    33% Off

    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

    9.6 lasts a long time
    9.3 Easy installation
    Main highlights
    • “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.
    • Water heater designed and manufactured to be installed in UK.
    • 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.
    • 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.
    • 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.
  • 9.7
    2
    Ariston

    Ariston PRO1 ECO 50 L Electric Storage Water Heater with A 50 L, Inclusive Of Unvented Kit, B Class Erp Rating, Waterplus Technology, Manufactured To Be Installed In UK - 3820019. , White

    9.4 lasts a long time
    9.1 Easy installation

    Why we love it

    Saves energy
    More hot water available
    Long lasting
  • 9.4
    3
    Ariston
    16% Off

    Ariston ANDRIS R 15 L Undersink Electric Water Heater, 3kW, Control Unit, B class ErP rating, Economy “E” Setting, Manufactured to be installed in UK - 3100834.

    9.8 lasts a long time
    9.4 Easy installation

    Why we love it

    Durable titanium enamelled tank.
    Energy-saving economy setting.
    Precise temperature control.

Our ranking system

The topchoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. topchoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.