10 Best Over Sink Water Heater in The UK

Last updated on 02/08/2025
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Best Choice
1
9.9
Exceptional
Haetrae 124316 95.010.161 7.3 kW Express Over Sink Heater, White
Haetrae
Haetrae 124316 95.010.161 7.3 kW Express Over Sink Heater, White
Why We Love It
  • Robust steel cased unit.
  • Perfect for boilers.
  • Easy to use design.
Main Highlights
  • Robust steel cased unit
  • Suitable for boilers or water heaters
  • Designed to be easy to use
  • Choice of 7 or 15L
9.9
Exceptional
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Best Value
2
9.8
Exceptional
Ariston Andris Elite WiFi 15l Water Heater Over Sink 4012005 2.5kw White for Sink hot Water heaters
Ariston
Ariston Andris Elite WiFi 15l Water Heater Over Sink 4012005 2.5kw White for Sink hot Water heaters
Free Shipping
Why We Love It
  • Smart control for convenience.
  • Safe and reliable functionality.
  • Energy saving for small spaces.
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.
9.8
Exceptional
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3
9.7
Exceptional
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
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‘’
9.7
Exceptional
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4
9.5
Superb
Ariston ANDRIS LUX ECO 10 L Oversink Electric Water Heater 2.5kW with A Titanium Enamelled Tank, A Class Erp Rating, Copper Heating Element, Manufactured To Be Installed In UK - 3100717
Ariston
Ariston ANDRIS LUX ECO 10 L Oversink Electric Water Heater 2.5kW with A Titanium Enamelled Tank, A Class Erp Rating, Copper Heating Element, Manufactured To Be Installed In UK - 3100717
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Why We Love It
  • Energy efficient with Eco Evo.
  • Features anti-legionella safety function.
  • Exceptional durability with titanium tank.
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 percent 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.
9.5
Superb
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5
9.3
Superb
Speedflow Unvented Undersink Water Heater 15 liter Capacity
Hyco
Speedflow Unvented Undersink Water Heater 15 liter Capacity
Why We Love It
  • Easy temperature control assurance.
  • Effortless and time-saving installation.
  • Flexibility in installation location.
Main Highlights
  • External temperature control and Neon element - on indicator
  • IPX4 rated
  • Maximum working temperature 75 degrees Centigrade
  • Cable pre-wired (1.5m) - saves time on installation
  • Units can be sited above or below or below the sink but must be installed the right way up
9.3
Superb
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6
9.3
Superb
Water Heater Oversink 5 Litre Tank Handy Flow Hyco HF05LQ
Hyco
Water Heater Oversink 5 Litre Tank Handy Flow Hyco HF05LQ
9.3
Superb
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7
9.3
Superb
3 kW Instant Electric Hand Wash Water Heater Oversink HW30M 240V Hyco Instantaneous
Hyco
3 kW Instant Electric Hand Wash Water Heater Oversink HW30M 240V Hyco Instantaneous
Why We Love It
  • Instant hot water availability.
  • Sleek silver finish.
  • Compact and efficient.
Main Highlights
  • 3 Kw Instant Electric Hand Wash Water Heater Oversink Hw30M 240V Hyco Instantaneous
  • Brand : Hyco
  • Product Type : Water Heater
  • Color: Size: Silver
9.3
Superb
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8
9.3
Superb
VELPAX Mini Electric Water Heater, 15L Electric Instantaneous Water Heate,1500W 220V,Waterproof Under Sink Water Heater with Digital Display for RV Kitchen Bathroom
VELPAX
VELPAX Mini Electric Water Heater, 15L Electric Instantaneous Water Heate,1500W 220V,Waterproof Under Sink Water Heater with Digital Display for RV Kitchen Bathroom
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Why We Love It
  • Instant hot water availability.
  • Durable and corrosion-resistant materials.
  • High efficiency saves energy.
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, 15L 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,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.
  • 【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.
9.3
Superb
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9
9.2
Superb
Save 13%
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
Bellanny
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.
9.2
Superb
Save 13%
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10
9.1
Superb
Save 8%
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
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)
8% 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.
9.1
Superb
Save 8%
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