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5 Best Water Heaters Parts of 2025

Last Updated - 05/09/2025

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Ariston

Ariston VELIS EVO 80L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install

Ariston

£450.00

More Details
Main highlights
- Water heater designed and manufactured to be installed in UK
- Ultra slim twin tank design: Ariston’s Velis Evo Wi-Fi electric storage water heaters are conceived with a functional and innovative design that allows the installation of the product even in the tightest spaces
- Supplied with unventend installation kit
- Shower Ready in 50 minutes: Shower-ready alerts are displayed on the front interface which shows when enough water has been heated to have the first shower. Its dual tank technology heats water faster than a traditional cylinder water heater, resulting in enough hot water to take a shower in only 50 minutes
- Eco Evo Function: The innovative ECO EVO function memorises user habits to deliver hot water while saving up to 14Percentage on energy bills. The product operates in compliance with top standards on energy efficiency within the electric water heating category
- Compact Design: With a depth of only 27 cm, the Velis Evo is perfect for installations where space is at a premium
- ABS Safety and Anti-Legionella System for complete peace of mind: A set of functions, including Anti-Overheating, Anti-Freezing and Dry Heating Self-Diagnosis, protect the unit in case of energy or water failures. Dry heating technology within the Velis Evo provides additional safety against short-circuits thanks to the heating elements being encased, thus avoiding direct contact with water. Moreover, Once a month, this efficient water heater automatically increases the water temperature up to 65°C, in order to eliminate the risk of legionella bacteria developing
£450.00
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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

Ariston

£430.00

More Details
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.
£430.00
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Spares2go

SPARES2GO 27" Incoloy Hard Hot Water Immersion Heater Boiler Element + Copper Pocket + Thermostat

Spares2go

£34.99

More Details
Main highlights
- Specifications: Length: 27" / 68.5cm -- Material: Incoloy Copper Pocket -- Power: 3000W / 230V -- Tested by Intertek to: BS-EN60335-2-73 and BS-EN60730-2-9 -- 15A Dual Safety Thermostat -- 2 1/4" Brass Boss & Sealing gasket + Metal Cap -- Wired and ready for use
- Premium quality, replacement / spare part
- Hard Water Incoloy Immersion Water Heating Element + Thermostat made for SPARES2GO (27", 3000W, 230V)
- Designed for use in areas of hard water where limescale is a problem.
£34.99
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Primaflow

Duratherm Resetable Immersion Heater Thermostat 7 Inch 49020307

Primaflow

£10.45

More Details
Main highlights
- This listing is for a Pack of 1 x 7 inch immersion heater thermostat with cut out
- This immersion thermostat has an in built electrical protection which will require manually resetting in the event of fault detection
- This immersion thermostat has an in built electrical protection which will require manually resetting in the event of fault detection
- This immersion heater thermostat has a blade length of approximately 7 inches and an overall length of approximately 8 inches
- Sometimes known as water cylinder thermostat
£10.45
5
Best Value

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

VELPAX

VELPAX Mini Electric Water Heater, 15L Electric Instantaneous Water Heate,1500KW 220V,Waterproof Under Sink Water Heater with Digital Display for RV Kitchen Bathroom

VELPAX

£89.99

More Details
Main highlights
- 【Super High Efficiency】-Small Hot Water Heater Energy efficient with plenty of hot water,also known as demand-type or instantaneous water heaters, provide hot water only as it is needed,our water heaters with thermal efficiency up to 90%,Instant hot water at the point of use, whenever needed,Also equipped with a high-definition intelligent digital LED display,effortlessly adjust the temperature between 86°F-158°F according to your preferences.
- 【Satisfaction Guarantee】-We feel confident that you will love our mini tank water heater. If there's something makes you unsatisfied, please don't hesitate to contact us. We would offer you 100% refund or a replacement within 3 months.
- 【Electric Mini Tank Water Heater】-The Electric Mini Tank Water Heater,1500-watt heating system delivers instant hot water in seconds without preheating,with more safety protection such as anti-freezing protection,over heating protection, 15L hot water can be output per minute. The maximum temperature raise is 158 °F.
- 【Easy Assemble and Use】-This Electric Tank Water Heater,for 1/2" NPT water hose connection,with Leakage protection fitting 1/2" NPT, pressure relief valve, two 3FT hoses,15L small tank water heaters,Compact design,The product dimensions are 11 x 11 x 11 inches, can be wall or floor-mounted in a discreet location.
- 【Durable and Long Service】- The internal materials of instant hot water heater electric 110v are made of high-temperature calcined layer and enamel layer, which have corrosion resistance, rust prevention,and anti-corrosion properties.Stainless steel heating tubes and built-in magnesium rods can effectively purify water quality and extend service life.Integrated stainless steel tank body and Polyurethane CFC-free filling layer ensure the stability of the tank body and excellent insulation.
£89.99

5 Best Water Heaters Parts of 2025

Ariston VELIS EVO 80L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install

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

SPARES2GO 27" Incoloy Hard Hot Water Immersion Heater Boiler Element + Copper Pocket + Thermostat

Duratherm Resetable Immersion Heater Thermostat 7 Inch 49020307

VELPAX Mini Electric Water Heater, 15L Electric Instantaneous Water Heate,1500KW 220V,Waterproof Under Sink Water Heater with Digital Display for RV Kitchen Bathroom

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