10 Best Under Sink Hot Water Heater in The UK
Last updated on 04/09/2025
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Best Choice
1
Ariston ANDRIS LUX ECO 15 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 - 3100722, White
Ariston
24% OffFree Shipping
Ariston
Ariston ANDRIS LUX ECO 15 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 - 3100722, White
24% OffFree Shipping
Why We Love It
- Energy efficiency rated 'A'.
- Eco Evo function saves money.
- Anti-legionella for safety.
Main Highlights
- 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 Percentage 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 TankEnhanced 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
Value for Money
2
Ariston Andris Lux 15 litres Under-Sink Unvented Electric Water Heater, 2kW
Ariston
14% Off
Ariston
Ariston Andris Lux 15 litres Under-Sink Unvented Electric Water Heater, 2kW
14% Off
Why We Love It
- Simplicity through a mechanical dial.
- Reliable copper heating element.
- Comforting heating cycle indicator.
Main Highlights
- Fast Reheat Times for instant hot water: ensures quick and efficient heating to meet daily needs
- Modern, cutting-edge and stylish design: complements any space while maximizing functionality
- Easy to operate with mechanical dial: simple and intuitive temperature control
- Installation in 10 easy steps: hassle-free setup with clear instructions for quick installation
- Titanium enamelled tank and 4-bolt flange for robustness and durability: copper heating element (nickel free) for reliable performance and longevity
- Copper heating element (nickel free) for efficient heating: ensures long-lasting performance and reduces the risk of corrosion
- Copper heating element (nickel free) for efficient heating: ensures long-lasting performance and reduces the risk of corrosion
3
Ariston Andris Elite WiFi 15l Water Heater Under Sink 4012006 2.5kw White for Sink hot Water heaters
Ariston
Free Shipping
Ariston
Ariston Andris Elite WiFi 15l Water Heater Under Sink 4012006 2.5kw White for Sink hot Water heaters
Free Shipping
Why We Love It
- Smart control via WiFi.
- Safe and reliable operation.
- Energy-saving Eco functions.
Main Highlights
- WiFi compatibility for smart control; ideal for those looking for an electric water heater or a hot water heater with advanced remote management for everyday use and energy saving
- Anti-legionella function for total peace of mind; this feature makes the ariston water heater safe and reliable
- Eco Evo and Boost functions for energy saving and maximum availability of hot water; suitable for small spaces that require a water heater for sink
- Electronic temperature regulation for precise control; ideal for customising your hot water heater in the kitchen, bathroom or utility room
- Soft touch buttons for intuitive use; they improve the user experience and make it easier to manage your electric water heater in a practical way.
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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
thermomate
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thermomate
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
Free Shipping
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‘’
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Electric on Demand 220-240V 2-3KW Hot Water Heaters 10L Safty Plug Point of Use Boiler Wash Under Sink on with Digital Temperature Control Smart Control
VINABUKS
15% OffFree Shipping
VINABUKS
Electric on Demand 220-240V 2-3KW Hot Water Heaters 10L Safty Plug Point of Use Boiler Wash Under Sink on with Digital Temperature Control Smart Control
15% OffFree Shipping
Why We Love It
- Compact design saves space.
- Adjustable high-temperature limit.
- Simple and easy installation.
Main Highlights
- Compact and Versatile Design: The VINABUKS Electric Water Heater features a smart 3.3-gallon (15L) tank, perfect for point-of-use applications. Its compact size fits effortlessly under sinks, making it ideal for kitchens, bathrooms, utility rooms, offices, and RVs. This space-saving design ensures hot water is always within reach.
- Instant Hot Water: Experience the convenience of immediate hot water at your fingertips. This water heater offers a fast recovery rate, providing instant hot water whenever you need it. The efficient 220V US safety plug ensures safe and reliable performance.
- Complete Installation Kit Included: This water heater comes with all necessary accessories for a seamless installation, including 2 PCs compression stainless steel water hoses, 1 pressure relief valve, and 1 tee fitting. The user-friendly design ensures a quick and easy setup process.
- High Energy Efficiency: Equipped with advanced insulation materials and a high-efficiency design, the VINABUKS water heater minimizes heat loss and maximizes energy savings. Its rapid heating capability ensures you get hot water on demand, reducing energy consumption and saving on your utility bills.
- Durable and Safe Construction: Built to last, the VINABUKS water heater features a high-quality stainless steel tank and a leak-proof design. It includes multiple safety features such as overheat protection and a pressure relief valve. With reliable customer support, you can trust in its long-term safety and performance.
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Mini Electric Instant Water Heater for Sink, Stainless Steel On-Demand Hot Water Water Heater Under Sink, 5500W 220V Point-of-use Compact Water Heaters for Home, Kitchen, Bathroom, Garage(Under Sink)
WARMCITY
16% OffFree Shipping
WARMCITY
Mini Electric Instant Water Heater for Sink, Stainless Steel On-Demand Hot Water Water Heater Under Sink, 5500W 220V Point-of-use Compact Water Heaters for Home, Kitchen, Bathroom, Garage(Under Sink)
16% OffFree Shipping
Why We Love It
- Compact, space-saving design.
- User-friendly digital display.
- Efficient, on-demand heating.
Main Highlights
- 【Mini Tankless Water Hear for Sink】With compact and space-saving design, our small water heater is perfect for small spaces, installs easily under sinks or in compact areas without sacrificing functionality. Powered with 5500W and 230V, it still provides robust hot water flow without compromising on space. Outlet water temperature is varied from 20℃ to 45℃ in general.
- 【Durable Stainless Steel Housing with Sleek LED Temperature Display and Adjustable Power Settings】The durable stainless steel housing of our vented water heater ensures long-lasting performance and adds a sleek, modern aesthetic that complements any kitchen or bathroom. The LED temperature display provides easy monitoring and precise adjustment for personalized comfort, while the adjustable power settings allow for energy-efficient performance tailored to meet varying hot water needs.
- 【 Hot Water : 20-45℃ Output, Adjustable Temp】The temperature output of our electric water heater for sink typically ranges from 20°C to 45°C. The hot water discharge temperature varies according to the water temperature entering and the flow volume. Tankless technology ensures energy efficiency by heating water on demand, reducing energy costs and environmental impact.
- 【Space-Savvy Design &Energy Savings at Its Best】Say goodbye to bulky water heaters. Our sleek and modern water heater fits seamlessly into UK kitchens and bathrooms, maximizing space without compromising functionality. Save more on energy compared to traditional storage heaters, as our on-demand design only heats water when you need it. Green living choice for water conservation and cost-effective heating.
- 【Both Home and Commercial】 Ideal for households, farms, summer house, cafes, garage, and tool rooms, the instant hot water heater for sink suits diverse needs, ensuring everyone has access to hot water when you need it. Install today and experience the convenience of instant hot water with a modern, efficient solution.
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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)
Briwellna
Free Shipping
Briwellna
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)
Free Shipping
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).
8
Neulriscn Instant Water Heater, 5.5KW 220V Electric Tankless Water Heater with Shower Head, Constant Temperature LED Digital Display for Bathroom, Kitchen, Under Sink Tank, Household Indoor
Neulriscn
Free Shipping
Neulriscn
Neulriscn Instant Water Heater, 5.5KW 220V Electric Tankless Water Heater with Shower Head, Constant Temperature LED Digital Display for Bathroom, Kitchen, Under Sink Tank, Household Indoor
Free Shipping
Why We Love It
- Instant hot water anytime.
- Smart temperature control feature.
- Safe and durable design.
Main Highlights
- 【Electric Tankless Water Heater】Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of 45℃ shortly. It is good idea to install this kind of tankless water heater electric a few ft away from the faucet or other feature, to get instant and sufficient hot water.
- 【Smart Temperature Adjustment】The tankless water heater features smart self-modulation, adjusting power input based on real-time water flow rate and temperature settings. When water flow decreases, the instant water heater reduces power to maintain your preferred temperature, avoiding scalding hot water. Optimal energy efficiency of 95% saves considerable electric charge.
- 【Effortless Temperature Control】The electric tankless water heater comes with a digital display and touch control panel, making temperature adjustments straightforward and easy. Just turn on the tap and let the smart tankless water heater handle the rest, combining simplicity with efficiency.
- 【Safe and Reliable】The instant hot water heater is equipped with inner water and electricity lines designed to run separately so as to avoid leakage or harm of scale build up. IPX4 waterproof, leakage protection, dry heat protection, automatic power-off in over-temperature and inactive states.
- 【Durable Mini Electric Water Heater】The instant hot water heater measures about 29 x 20 x 7cm; Rated voltage: 220V, Rated power: 5500W, Use water pressure: 0.1-0.6MPa, Heating material: 304 stainless steel, Temperature range: 25-55℃.
- 【Installation Tips】1. First pass water and then pass electricity, suitable for water pressure of 0.1-0.6MPa; 2. The power switch should be installed in a place; 3. It should be installed in a place with an indoor temperature of above 0℃, the hot water outlet should not be too far from the hot water usage point.
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3000W Instant Water Heater, Mini Electric Tankless Instant Heater with LED Display, Under Sink Water Heater Constant Temperature for Shower Bathroom Kitchen
Luqixcey
Free Shipping
Luqixcey
3000W Instant Water Heater, Mini Electric Tankless Instant Heater with LED Display, Under Sink Water Heater Constant Temperature for Shower Bathroom Kitchen
Free Shipping
Why We Love It
- Safe, rust-free brass construction.
- Instant heating, endless hot water.
- Compact, versatile, easy installation.
Main Highlights
- 【High-quality Material】Our tankless electric water heater is made of brass material, which has high stability, high temperature resistance and no rust. It ensures safe heating, energy efficiency, water and electricity isolation protection, and safe use.
- 【Safe & Reliable】This electric water heater uses a stainless steel tank water-electricity separation without scale formation, ensuring healthy and safe use. It also includes multiple safety protection measures such as leak protection, support, and power-off functions.
- 【Instant Heating】This 3000W tankless water heater can quickly heat the water temperature in a short time. Turn cold water into hot water in seconds, 24H unlimited hot water, instant hot, etc. Suitable for in-line under-sink installations.
- 【Easy Installation】Our under sink water heater can be effortlessly installed under the cabinet with a simple touch of the switch. Equipped with an LED display for temperature readings, it offers ease of use and convenience. It only heats water when needed, reducing energy consumption and saving costs.
- 【Wide Range of Uses】This instant water heater is compact, quick to heat, and suitable for various settings including kitchens, bathrooms, showers, and public restrooms. It provides a temperature range between 20-50 degrees to meet your hot water requirements.
10
T30I 3KW
Triton Showers
38% OffFree Shipping
Triton Showers
T30I 3KW
38% OffFree Shipping
Why We Love It
- Simple operation controls.
- Instant water heating.
- Effortless installation.
Main Highlights
- 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