10 Best Instant Electric Water Heater in The UK

Last updated on 22/07/2025

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Fudeer 220V 5.5Kw Stainless Steel Instant Electric Water Heater, Mini Tankless Water Heater with Digital Display for Kitchen/Bathroom Sink, Under/Above Counter, Adjustable Temperature 30-45℃(Silver

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Why We Love It

Instant hot water delivery.
Easy temperature control options.
Durable stainless steel design.

Main Highlights

【Instant Hot Water at Your Fingertips】Get hot water within 20 seconds of turning on the heater, with a temperature range of 30-45℃. The water temperature adjusts automatically based on the inlet water temperature and flow rate, providing instant hot water for your daily needs.
【Digital Display & Temperature Control】 Equipped with a clear digital display, this water heater shows real-time water temperature. Use the "+" and "-" buttons to easily adjust the output temperature to your desired level, perfect for washing dishes, hands, or face.
【Durable Stainless Steel Construction】Made with high-quality stainless steel housing and heating elements, this water heater is resistant to high temperatures, corrosion, and rust. The stainless steel design ensures long-lasting durability and prevents scale buildup.
【Compact Tankless Design, Saves Space】 The mini tankless design eliminates the need for a bulky storage tank, making it ideal for small spaces. It can be installed under or above the sink, saving valuable space in your kitchen or bathroom while avoiding scale accumulation.
【Energy Efficient & Safe to Use】 This on-demand water heater heats water only when needed, reducing energy consumption and saving on electricity bills. It features multiple safety protections, including overheating and dry-fire protection, ensuring safe and reliable operation for your home.
【Note】When using hot water, if the water flow rate is very low, the actual water temperature will be very high. (2) Although the faucet temperature is displayed on the screen, the actual outlet water temperature may be slightly different. (3) If you have any questions about the electric faucet, please contact us immediately.

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.

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Why We Love It

Award-winning design and innovation.
Ensures total user safety.
Highly space-saving and efficient.

Main Highlights

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.

Briwellna Electric Instantaneous Tankless Water Heater 5.5kW 220V, Instant Hot Water Heater with Digital Display for Kitchen Bathroom Sink Counter Under/Above Home Indoor (White)

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Why We Love It

Unlimited hot water on-demand.
Efficient, space-saving design.
Ensures multiple security protections.

Main Highlights

[On-demand, Umlimited Hot Water] Briwellna Non-Thermostatic Tankless Electric Water Heater is ideal for a single sensor faucet or a single metering faucet for handwashing and other fixed-flow applications.
[Compact Size Fits Almost Anywhere] This water heater is designed specifically with replacements in mind. The smaller dimensions (210mm×172mm×73mm)makes it easier to swap out your existing less-efficient water heater.
[Flexible Installation in Any Orientation] The product can be installed at any angle and the display will be automatically adjusted when the product is installed upside down.
[Save Energy and Time] Equipped with the latest integral cast aluminum heating technology, this water heater produces instant hot water without storing water, preheating devices or an attemperator, saving power consumption, water, time and space. It can be shut off by turning off water or power supply
[Multiple Security Protection] Smart protection functions protect the product from leakage, over-temperature, dry heating and over-pressure. We offer one-year warranty.
[Easy Installation] Coming with multi-language user's manual, it's easy to install the faucet without plumbers. Video of installation guadiance is available. It can be installed above or under the sink. Please make sure the water pressure required(0.04-0.8MPa) and your breaker panel to dedicate 25A(5500W) double pole breakers solely to the unit. The water connector size is 1/2". Fits both old style 1/2" hose connector and 3/8" water supply system(with adapters).

ThermoMate ELEX5.5 Instantaneous Electric Water Heater with LED Display, 5.5kW Hand Wash Water Heater for Basins Sinks, Over/Under Sink Water Heaters, ‎Hard Wire 220V

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Why We Love It

Instant heating, endless hot water.
Advanced flow control feature.
Convenient temperature control display.

Main Highlights

【2S INSTANT HEATING & ENDLESS HOT WATER】- Turn on the water tap and endless hot water will come out within 2 seconds on demands when require, hence you will never run out of hot water and only pay for what you really use. Savings of up to 50% on water heating costs.
【EXCLUSIVE ADVANCED FLOW CONTROL & WATER LEAKAGE PREVENTION】- Unique technology is applied to improve water flow and prevent any water from splashing or dripping. You can adjust the flow rate you want to meet your needs in any time. Maximum hot water flow rate: 3L/min
【FLEXIBLE INSTALLATION】- When inverting the installation, the numbers automatically flip over. When the electric washbasin is in operation, the LED displays the current water temperature in real time, so you can easily get hot water at the desired temperature. The temperature range of 35 to 55°C can be selected by touch control.
【EXCEPTIONALLY DURATION】- Built in high quality alloy bare heating element, it is corrosion-resistant and acid-resistant; flowing water prevents limescale from building up, which prolongs its service lifespan.
【TWO INSTALLATION APPLICATIONS OPTIONAL】- Functional for both over sink and under sink installation, display will reverse automatically. Act as primary heater, with water being injected from cold mains directly; Act as booster heater, with hot water being injected from a storage tank. It is free to connect to a mixer tap.Water Inlet and outlet sizes G1/2‘’

Instant Electric Tankless Water Heater 220/240V, FVSTR Small Smart Portable Self-Modulating on Demand Use Under Sink Kitchen Household Shower, Hot Water for House Shower [Energy Class A] (7.5KW)

25% OffFree Shipping

Why We Love It

Instant and sufficient hot water.
Convenient digital display control.
Compact and versatile positioning.

Main Highlights

【Installation Note】that the approval of the relevant distribution network operator (DNO) is required for installation and that the installation of the products may only be carried out by the distribution network operator itself or by an installation company entered in the operator's list of installers.
【REMOTE CONTROL】 The tankless water heater comes with digital display & touch control panel so temp setting is easy job. Now turn on the tap and let the smart unit do the rest, you needn’t go through hard lesson about temp setting by a mixer tap without any hint. The model comes with Remote control, useful for installation under sink.
【SMART SELF ADJUSTMENT】 The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.
【SAFE and DURABLE】 Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come..POINT of USE The sleek tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid energy waste
【Simple Installation】1/2-Inch Water heater connector. In order to install whole house tankless water heater electric 7.5KW 240V it requires 240 Voltage, 2 x Double-POLE 30AMP, wire gauge 2 x 8AWG, please check to confirm that your breaker panel meet these specifications. 2-year limite warranty and 24/7 customer support services
【Installation Note】that the approval of the relevant distribution network operator (DNO) is required for installation and that the installation of the products may only be carried out by the distribution network operator itself or by an installation company entered in the operator's list of installers.
【INSTANT HOT WATER HEATER 】- Applied with 7500W/11000W heating system, the electric tankless water heater supplies instant hot water, 3 seconds to get hot water without preheating. Instant consistent and endless hot water of the maximum temperature reach to 55℃/131℉. It is perfect companion for sinks, bringing you perfect experience of comfort and relaxing
【Installation Note】that the approval of the relevant distribution network operator (DNO) is required for installation and that the installation of the products may only be carried out by the distribution network operator itself or by an installation company entered in the operator's list of installers.

Bellanny Mini Electric Water Heater, 1.5KW 220V Electric Instantaneous Water Tap with 10L Water Tank, IP4X Waterproof Under Sink Water Heater with LCD Digital Display & Temperature Knob, UK Plug

13% Off

Why We Love It

Heats water incredibly fast.
Provides hot water instantly.
Durable stainless steel construction.

Main Highlights

【Fast Heating】 This instant water heater adopts advanced instantaneous heating technology, which heats up quickly and greatly saves time waiting for hot water. The single-piece compact insulation design not only reduces energy consumption, but also ensures a continuous supply of hot water. Whether you are washing up in the morning or bathing in the evening, you can turn on the water immediately and enjoy a comfortable living experience.
【On-Demand Water Supply】 This compact water heater eliminates the long wait for hot water at the sink, allowing you to get hot water on demand whenever you need it. Whether you're washing your hands, face or dishes, it's ready to use, providing convenience and comfort. Whether you are a domestic user or a commercial establishment, this water heater is the ideal choice for you.
【Quality Material】This under sink water heater is made of stainless steel tubes with excellent anti-pollution ability, which can adapt to a variety of complex water quality environments. Whether it is hard water or soft water, it can ensure the long-term stable operation of the water heater and extend its service life. High-quality material selection, so you can use it with confidence and peace of mind.
【Safety & Reliability】 This water heater adopts a one-piece moulding design, effectively preventing erosion in bathroom and kitchen environments. Over-pressure protection function: when the pressure in the liner exceeds the safety rated pressure, the safety relief valve will automatically release the pressure. Dry burn prevention function: when the liner dries out, the secondary insulation protection will immediately cut off the power supply and automatically stop working.
【Flexible Installation】 Compact in size, this small electric water heater can be easily placed in the kitchen, lounge, bathroom or anywhere else you need it. The exquisite design not only saves space, but also blends into various home environments and enhances the overall aesthetics. Whether it is wall-mounted or vertical installation, it can meet your personalised needs and make life more convenient.

Btstil Instant Electric Water Heater, 3500W Mini Electric Water Heater, Intelligent Instantaneous Water Heater Heater with Temperature Display for Bathroom Kitchen, UK Plug (White)

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Why We Love It

Compact size fits anywhere.
Intelligent automatic temperature adjustment.
Professional installation recommended.

Main Highlights

【Small & Space-saving】：The mini water heater body can be held in one hand, and 360 degree free installation, can meet your different needs. One-button instant heating, hot water at any time, the temperature of which can reach up to 50 degrees.
【LED Indicator】：With the high heating power of 3.5w, only 2 seconds of hot water, according to the water inlet and the set temperature, intelligent automatic adjustment of the power. LED indicator to show power and heating status.
【Convenient & Efficient】：It is a high-efficiency mini water heater with compact size, very convenient to install and use. Made of high quality ABS material, which is rustproof, anti-corrosion, elegant and fashionable.
【Fast Heating】：Equipped with a built-in turbo heating part and a drain valve, the heating system is designed, double start switch with water pressure switch + water flow switch, you can use it safely and reliably with the faucet in your kitchen, bathroom and public toilet for fast hot water.
【Caution Measures】：This is a kind of instant heating, and the temperature can only be controlled by adjusting the size of the water flow. Installation is easy, but professional installation is highly recommended. Before connecting the power for the first time, make sure that cold water is flowing through the device to avoid dry heat.

VELPAX Mini Electric Water Heater, 10L Electric Instantaneous Water Heate,1500KW 220V,Waterproof Under Sink Water Heater with Digital Display for RV Kitchen Bathroom

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Why We Love It

Instant hot water, no waiting.
Durable construction, long-lasting use.
User-friendly, easy installation process.

Main Highlights

【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, 10L of hot water can be output per minute. The maximum temperature raise is 158 °F.
【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.
【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.
【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,10L small tank water heaters,Compact design,The product dimensions are 14.5 x 8.6 x 10.6 inches, can be wall or floor-mounted in a discreet location.
【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.

Mini Instant Water Heater, Electric Instant Water Heater, 220 V 3500 W Adjustable Temperature Instant Water Heater, Electric Instant Water Heater for Kitchen Sink Under The Faucet

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Why We Love It

Instant hot water convenience.
Space-saving compact design.
Efficient energy-saving technology.

Main Highlights

【High Efficiency Portable Water Heater】This is a high efficiency water heater suitable for hot and cold water applications from 30°C to 52°C (adjustable temperature). The temperature of this type of water heater depends on the amount of water in the water heater and the temperature of the incoming water. You can change the small nozzle in our set to adjust the water volume and make the water a little warmer.
【Instant Heating】The mini shower water heater can heat up quickly. Turn on the faucet and there will be hot water immediately, so you don’t have to wait too long. No preheating required. Now turn on the faucet and enjoy fresh hot water from your RV water heater. This mini water heater comes with a large high-resolution touch screen. Directly control the required temperature with one click, making it more convenient to use
【Mini takes up no space】This water heater is small and saves space. Can be installed at 360° angle. This is a water heater that converts cold water into hot water. The 5500W high-performance tankless water heater heats water efficiently, evenly and permanently. This type of water heater is often used in faucets in kitchens, bathrooms or public restrooms to instantly heat water.
【High-Quality Material】Due to the use of nickel-chromium wire technology, the thermal efficiency is higher than traditional heating tubes and is not prone to scaling. This kind of water heater does not need to store water and only starts working when hot water is needed, saving electricity and water. Stable to use even under low water pressure. Engineering plastics have good insulation, and metal casings are not suitable for electric water heaters.
【Note】3.5kW is suitable for environments where the inlet water temperature is above 20°C. It is not recommended to install a 3.5 kilowatt water heater in the bathroom. When used in the shower, the power may be too low to achieve the desired results. Installation is easy, but professional installation is highly recommended. Before connecting the device to power for the first time, make sure cold water is running through the device to avoid dry heat. You must do the wiring yourself.

CJHZQYY Instant Electric Water Heater, 3500W Mini Instantaneous Water Heater Without Tank Intelligent Instantaneous Water Heater Heater with Temperature Display for Bathroom Kitchen, UK Plug (White)

3% OffFree Shipping

Why We Love It

Space-saving and versatile installation.
Impressive heating efficiency.
Smart temperature regulation.

Main Highlights

💦This instantaneous water heater is small and space-saving. 360° can be installed arbitrarily without taking up space and can meet your different needs. This water heater can heat up to 50°C. Since the temperature depends on the amount of water in the water heater, the temperature rises faster when the water flow is low. If you use it in winter, please adjust the water flow if the water temperature is not enough.
💦This is a water heater that turns cold water into hot water. The 3500 W high-performance instantaneous water heater heats water efficiently, evenly and permanently. This type of water heater is widely used in kitchen, bathroom or public toilet faucet to heat water instantly.
💦Adopting nickel-chromium wire technology, the thermal efficiency is higher than ordinary heating pipes, not easy to scale. This water heater does not need to store water and only starts working when hot water is needed, saving electricity and water. Stable use even with low water pressure
💦Frequency conversion automatic constant temperature intelligent identification function, according to the water inlet and the set temperature, intelligent automatic adjustment of the power, so that the use effect is better, more power and water saving. Digital LCD temperature display.
💦Water pressure switch + water flow switch: double start switch, easy to deal with high-rise / old building / peak water consumption. Note: Installation is easy, but professional installation is highly recommended. Before connecting the power for the first time, make sure that cold water is flowing through the device to avoid dry heat.

8.7

Excellent

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We scanned 1634 products

We reviewed these offers relevant to the Instant Electric Water Heater within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Fudeer, Ariston, Briwellna, thermomate, FVSTR, Bellanny, Btstil, VELPAX, QCXWCJWD, CJHZQYY, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Instant Electric Water Heater in the market, we considered we took a deep dive into 8171 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Fudeer 220V 5.5Kw Stainless Steel Instant Electric Water Heater, Mini Tankless Water Heater with Digital Display for Kitchen/Bathroom Sink, Under/Above Counter, Adjustable Temperature 30-45℃(Silver. We love many things about this product by Fudeer. What sets it apart from the competition is Instant hot water delivery. , Easy temperature control options. , Durable stainless steel design. .
The best value product for most shoppers and where user satisfaction is continuously the highest is 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. by Ariston based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Instant Electric Water Heater and the best cost-to-value ratio is Instant Electric Tankless Water Heater 220/240V, FVSTR Small Smart Portable Self-Modulating on Demand Use Under Sink Kitchen Household Shower, Hot Water for House Shower [Energy Class A] (7.5KW)at FVSTR with a 25% discount.
Our list of the best Instant Electric Water Heater is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Instant Electric Water Heater in The UK

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We scanned 1634 products

We concluded that: