10 Best Tankless Water Heaters- Sep 2025, UK

1212 reviews analysed

Rank	Product Name	Score
1^st	Pudin Electric Instant Tankless Water Heater Temperature Display Efficient Heating Kitchen... By Pudin 124 Reviews Show More Product Highlights 1.High efficiency, energy saving, convenient and practical. More energy-saving than ordinary water heaters, water temperature freely set, automatic frequency conversion constant temperature, intelligent control. 2.Multiple security protections are more assured. Leakage automatic power-off protection, power line misconnection protection, induction air anti-dry protection. 3.Fault self-test function, the heater intelligently identifies common fault problems and prompts the user what measures need to be taken. 4.Screen saver, memory set temperature function. The heater does not work for 30 seconds, the screen automatically turns off the screen protection, has a power-off function, but will remember the set temperature. 5.This product can be started with ultra-low water pressure and is perfectly installed in the kitchen and bathroom.	9.5 SCORE	Check Price
2^nd	Pudin,Brand New 220V Electric Instant Heater,Supply Hot and Cold Water,Stainless Hot Water... By PUDIN 124 Reviews Show More Product Highlights 1.Unique to the market, ideal for situations where there is no hot water supply 2.Scale reduction technology protects heating elements 3.Isolated Heating Technology:Achieve electricity and water separation,waterproof, anti-power,Safe and Reliable. 4.Power unified are the 3000-watt, fast heat! Temperature at about 30 degrees to 60 degrees(approx). 5. Hot and cold water supply, intimate for your life; Every Tap comes with installation instruction, easy to self-installing.	8.7 SCORE	Check Price
3^rd	BuoQua 6L Propane Gas Hot Water Heater 12KW Portable 6L LPG Hot Water Heater Tankless Prop... By BuoQua 124 Reviews Show More Product Highlights 【Premium Material】Apply tin-plated copper water tank, corrosion-resistant and fast to heat. More durable than other steel tank on market 【Energy-Saving Design】Adopt advanced heater exchanger and burner to low gas consumption and burning noise 【Temperature & Adjustable】With 3 knobs for: summer/winter mode adjust, water control and fire control. Easily to adjust appropriate showering water temperature 【Manifold Protection】Preset different protection methods to ensure your safety, such as: incomplete combustion safety device, over water temperature protection device, flame failure device, 20 minute in-built timer, gas & water volume regulator 【Easy Installation】Just hang it on the wall, with metal carry handle, it can be moved easily, ideal for camper, no need of electricity	8.8 SCORE	Check Price
4^th	Thermomate ELEX9.6 Instantaneous Electric Water Heater, 9.6kW Instant Electric Water Heate... By thermomate 124 Reviews Show More Product Highlights ?【INSTANT & ENDLESS HOT WATER】When turning on the tap, hot water coming from the electric water heater instantly. No need to wait for preheating before using, no stand-by energy loss. Activation flow rate is 2.2 L/min and when temperature is riasing by 25℃, water flow rate can be up to 5.4L/min. ?【FULLY CONTROL OF WATER TEMPERATURE】Adopting Self-modulating Temperature Technology of Germany, Backlit LCD digital display and constant temperature fluctuation in 1℃ via touch control gives you complete control of hot water. ?【ENERGY & BILL SAVING】Installed directly at point-of-use, avoiding water wasted in long pipe. Savings of up to 50% on water heating costs, thus reducing your energy bills. ?【EXCEPTIONALLY DURATION】Built-in high quality alloy bare heating element, it is corrosion-resistant and acid-resistant; No water storage prevents limescale from building up, which prolongs its service lifespan. ?【EASY & QUICK INSTALLATION】No venting required and its space-saving design, just a little larger than a shoebox, allows for a "hidden" installation under the smallest cabinets, water delivered to one or two outlets for bathrooms, kitchens, etc.	8.9 SCORE	Check Price
5^th	Camplux BW158C CE Certified GAR Standard Tankless Gas Water Heater with Rain Cap, 6L Outdo... By CAMPLUX ENJOY OUTDOOR LIFE 124 Reviews Show More Product Highlights ➤ ON DEMAND HOT WATER, SAVING ENERGY- Camplux BW158C gas water heater is capable of delivering 6L/min of endless hot water at the flick of a switch anywhere. Only heats the water up for actually use. With 0.25 bar startup, it is great for campersite, RV with low water pressure. Energy class: A+. ➤ CE CERTIFIED GAR STANDARD- The 6L gas water heater complies with CE certified GAR standard throughout EU market, which features multiple protection configurations, such as flame failure protection, overheat protection, 20-min safety shutoff protection, enhancing your family safety. ➤ WEATHERPROOF RAIN CAP- Equipped with a rain cap, it is easily installed outdoor without worries that the rain runs down inside, as well as leaves, insects and other hazards, prolonging its lifespan. Ignited by 2-D cell batteries, it is great for off grid areas. ➤ EASY TO INSTALL & OPERATE - The gas shower is small and light weighted, ideal for carrying everywhere you go. You can mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. LED temperature display will show you the exact outlet hot water temperature, useful for setting your shower temperature and safely washing your horses, pets. ➤ PLEASE NOTICE - We provide a 37mbar CE approved gas regulator for quick installation to the propane gas cylinder. Please be aware before purchasing that the provided gas regulator is only compatible with the propane gas cylinder with 27mm clip-on connection.	9.0 SCORE	Check Price
6^th	TINTON LIFE 220V Instant Tankless Electric Hot Water Heater Faucet Kitchen Instant Heating... By TINTON LIFE 124 Reviews Show More Product Highlights Material: H59A copper + ABS; The inlet way: Big under inflow; Surface treatment: Multiple plating; Spool: Ceramic spool; Heating tube: High-purity copper liner heating element; 220V/50HZ; 3000W; Working pressure: 0.04-0.5 MPA; Waterproof grade: 1PX4; General diameter; Cord Length: About 1.5 m; Plug type: GN - 901 Power unified are the 3000-watt, fast heat! Temperature at about 30 degrees to 40 degrees(approx). ABS engineering plastics, high temperature resistant, soft and strong, not easy to burst, high stability. Anti-stamping, UV radiation, the product is not easy to aging and will make even better performance and prolong its lifetime. Package with a Socket Converter! Warning: DON'T test it in your hands before installing finished, that's would be very dangerous. Please operate it under the user manual.	9.1 SCORE	Check Price
7^th	Electric Hot Water Taps,Topser KA-06 Pro Adjustable Power Electric Instant Heater Kitchen... By TopSer 124 Reviews Show More Product Highlights 1. Stepless Adjustable Power Selection: 0~3.5kW, Variable temperature control between 20 and 60℃, protection from frost. So you can more intuitive and convenient to control the outlet water temperature. 2. Multiple security protection: Safety pressure relief device. 3 seconds hot water setting. Built-in double partition wall. Double ground protection 3. The tap use the environmentally friendly and high quality insulation material. Electrostatic protection. High temperature resistance. IPX4 Waterproof. 4. Nickel-Chromium Multi-Core Heating System: use mechanical Precision Welding Technology,which makes the life of the heating tube longer. Do not worry about WATER LEAKAGE, DRY BURNING, FASTER HEAT DISSIPATION,NOT EASY TO SCALE 5. TASTE THE ART OF LIVING: Four Seasons General, unlimited hot water, warm your hands, especially in the winter. When the taste becomes the essence in your life, then you take the frontal line of fashion, appreciating purified and comfortable wash or bath life. Perfect fit for any style of your Kitchen or Bathroom or Washroom, gaining more and more users' favorite	9.2 SCORE	Check Price
8^th	FORAVER 18L LPG Water Heater 4.8GPM Propane Gas Tankless Stainless Instant Boiler 36KW Liq... By FORAVER 124 Reviews Show More Product Highlights Product: 18L Gas Water Heater; Water heater Type: Tankless; Heat Output Power: 36 KW; Gas Pressure(LPG): 2800 Pa Hot Water Output: 18 L/min (4.8 GPM); Use Gas Type: Liquefied Petroleum Gas (LPG); Rubber Gas Hose(Outer diameter): 20 mm (0.79 inch) Modern fashionable line shape designed, magnificent thin-shaped appearance; High efficient energy saving; Low water-pressure start up Manifold auto protection, Lon flame inspection; Controller design, over heat protection; Over water pressure protection function, anti-freezing protection function. Every type of water heater is only suitable for one kind of gas. This 18L water heater is ONLY for Liquefied Petroleum Gas (Propane).	9.3 SCORE	Check Price
9^th	Mini Instant Electric Water Heater Under Sink - 3kw at 220V 230V 240V-Tankless Hot Water H... By Lyty 124 Reviews Show More Product Highlights 【Ultra Mini Undersink Water Heater】Product size: 16CM10.5CM7CM, just a bit larger than your iphone 8 plus. 【Endless hot water】 No need to preheat before using. As soon as you open the tap, the water ﬂows with your desired temp in a few seconds. High efficient, saving energy. 【Eco & Electric & Water Saving】 Safe heater, save up to 55% on your electric cost, water saving, no pollution, no exhaust gas. 【Work Depend on The Flow】 Start to heat when the flow > 0.6 liters, and turn off when lower < 0.4 liters. The temp is between 30 ~ 55℃. If the flow is large, the temp will be low, if the flow is small, the temp will be high. Pls control the outlet temp on the display by adjusting the flow. 【Compact Design, Wide Use】Meets your various needs such as used in kitchen, bath room, public restroom, etc. Only for hand/face/dishes/vegetables washing, not for shower. (If need, choose our 5.5kw heater)	9.4 SCORE	Check Price
10^th	Instantaneous Electric Water Heater, 3KW/3.4KW/3.8KW Tankless Instant Electric Power Showe... By WAOBE 124 Reviews Show More Product Highlights ■ 3 different specifications: 3000W/3400W/3800W to meet the needs of most families. Stainless construction with mini design, it is durable, elegant and fashionable. ■ This is a water heater for the application of changing the cold water into hot water and it will meet your various needs such as used in kitchen, bath room, public restroom, etc. ■ It is a high efficient water heater with compact size to produce the hot water very quickly. ■ LCD digital temperature display. Freely adjust water temperature by water flow, simple operation. ■ Safe heater, electricity saving, water saving, no pollution, no exhaust gas.	8.6 SCORE	Check Price

1^st

Pudin Electric Instant Tankless Water Heater Temperature Display Efficient Heating Kitchen...

9.5
124 Reviews

Check Price
Show More
Product Highlights
1.High efficiency, energy saving, convenient and practical. More energy-saving than ordinary water heaters, water temperature freely set, automatic frequency conversion constant temperature, intelligent control.
2.Multiple security protections are more assured. Leakage automatic power-off protection, power line misconnection protection, induction air anti-dry protection.
3.Fault self-test function, the heater intelligently identifies common fault problems and prompts the user what measures need to be taken.
4.Screen saver, memory set temperature function. The heater does not work for 30 seconds, the screen automatically turns off the screen protection, has a power-off function, but will remember the set temperature.
5.This product can be started with ultra-low water pressure and is perfectly installed in the kitchen and bathroom.
2^nd

Pudin,Brand New 220V Electric Instant Heater,Supply Hot and Cold Water,Stainless Hot Water...

8.7
124 Reviews

Check Price
Show More
Product Highlights
1.Unique to the market, ideal for situations where there is no hot water supply
2.Scale reduction technology protects heating elements
3.Isolated Heating Technology:Achieve electricity and water separation,waterproof, anti-power,Safe and Reliable.
4.Power unified are the 3000-watt, fast heat! Temperature at about 30 degrees to 60 degrees(approx).
5. Hot and cold water supply, intimate for your life; Every Tap comes with installation instruction, easy to self-installing.
3^rd

BuoQua 6L Propane Gas Hot Water Heater 12KW Portable 6L LPG Hot Water Heater Tankless Prop...

8.8
124 Reviews

Check Price
Show More
Product Highlights
【Premium Material】Apply tin-plated copper water tank, corrosion-resistant and fast to heat. More durable than other steel tank on market
【Energy-Saving Design】Adopt advanced heater exchanger and burner to low gas consumption and burning noise
【Temperature & Adjustable】With 3 knobs for: summer/winter mode adjust, water control and fire control. Easily to adjust appropriate showering water temperature
【Manifold Protection】Preset different protection methods to ensure your safety, such as: incomplete combustion safety device, over water temperature protection device, flame failure device, 20 minute in-built timer, gas & water volume regulator
【Easy Installation】Just hang it on the wall, with metal carry handle, it can be moved easily, ideal for camper, no need of electricity
4^th

Thermomate ELEX9.6 Instantaneous Electric Water Heater, 9.6kW Instant Electric Water Heate...

8.9
124 Reviews

Check Price
Show More
Product Highlights
?【INSTANT & ENDLESS HOT WATER】When turning on the tap, hot water coming from the electric water heater instantly. No need to wait for preheating before using, no stand-by energy loss. Activation flow rate is 2.2 L/min and when temperature is riasing by 25℃, water flow rate can be up to 5.4L/min.
?【FULLY CONTROL OF WATER TEMPERATURE】Adopting Self-modulating Temperature Technology of Germany, Backlit LCD digital display and constant temperature fluctuation in 1℃ via touch control gives you complete control of hot water.
?【ENERGY & BILL SAVING】Installed directly at point-of-use, avoiding water wasted in long pipe. Savings of up to 50% on water heating costs, thus reducing your energy bills.
?【EXCEPTIONALLY DURATION】Built-in high quality alloy bare heating element, it is corrosion-resistant and acid-resistant; No water storage prevents limescale from building up, which prolongs its service lifespan.
?【EASY & QUICK INSTALLATION】No venting required and its space-saving design, just a little larger than a shoebox, allows for a "hidden" installation under the smallest cabinets, water delivered to one or two outlets for bathrooms, kitchens, etc.
5^th

Camplux BW158C CE Certified GAR Standard Tankless Gas Water Heater with Rain Cap, 6L Outdo...

9.0
124 Reviews

Check Price
Show More
Product Highlights
➤ ON DEMAND HOT WATER, SAVING ENERGY- Camplux BW158C gas water heater is capable of delivering 6L/min of endless hot water at the flick of a switch anywhere. Only heats the water up for actually use. With 0.25 bar startup, it is great for campersite, RV with low water pressure. Energy class: A+.
➤ CE CERTIFIED GAR STANDARD- The 6L gas water heater complies with CE certified GAR standard throughout EU market, which features multiple protection configurations, such as flame failure protection, overheat protection, 20-min safety shutoff protection, enhancing your family safety.
➤ WEATHERPROOF RAIN CAP- Equipped with a rain cap, it is easily installed outdoor without worries that the rain runs down inside, as well as leaves, insects and other hazards, prolonging its lifespan. Ignited by 2-D cell batteries, it is great for off grid areas.
➤ EASY TO INSTALL & OPERATE - The gas shower is small and light weighted, ideal for carrying everywhere you go. You can mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. LED temperature display will show you the exact outlet hot water temperature, useful for setting your shower temperature and safely washing your horses, pets.
➤ PLEASE NOTICE - We provide a 37mbar CE approved gas regulator for quick installation to the propane gas cylinder. Please be aware before purchasing that the provided gas regulator is only compatible with the propane gas cylinder with 27mm clip-on connection.
6^th

TINTON LIFE 220V Instant Tankless Electric Hot Water Heater Faucet Kitchen Instant Heating...

9.1
124 Reviews

Check Price
Show More
Product Highlights
Material: H59A copper + ABS; The inlet way: Big under inflow; Surface treatment: Multiple plating; Spool: Ceramic spool; Heating tube: High-purity copper liner heating element; 220V/50HZ; 3000W; Working pressure: 0.04-0.5 MPA; Waterproof grade: 1PX4; General diameter; Cord Length: About 1.5 m; Plug type: GN - 901
Power unified are the 3000-watt, fast heat! Temperature at about 30 degrees to 40 degrees(approx).
ABS engineering plastics, high temperature resistant, soft and strong, not easy to burst, high stability. Anti-stamping, UV radiation, the product is not easy to aging and will make even better performance and prolong its lifetime.
Package with a Socket Converter!
Warning: DON'T test it in your hands before installing finished, that's would be very dangerous. Please operate it under the user manual.
7^th

Electric Hot Water Taps,Topser KA-06 Pro Adjustable Power Electric Instant Heater Kitchen...

9.2
124 Reviews

Check Price
Show More
Product Highlights
1. Stepless Adjustable Power Selection: 0~3.5kW, Variable temperature control between 20 and 60℃, protection from frost. So you can more intuitive and convenient to control the outlet water temperature.
2. Multiple security protection: Safety pressure relief device. 3 seconds hot water setting. Built-in double partition wall. Double ground protection
3. The tap use the environmentally friendly and high quality insulation material. Electrostatic protection. High temperature resistance. IPX4 Waterproof.
4. Nickel-Chromium Multi-Core Heating System: use mechanical Precision Welding Technology,which makes the life of the heating tube longer. Do not worry about WATER LEAKAGE, DRY BURNING, FASTER HEAT DISSIPATION,NOT EASY TO SCALE
5. TASTE THE ART OF LIVING: Four Seasons General, unlimited hot water, warm your hands, especially in the winter. When the taste becomes the essence in your life, then you take the frontal line of fashion, appreciating purified and comfortable wash or bath life. Perfect fit for any style of your Kitchen or Bathroom or Washroom, gaining more and more users' favorite
8^th

FORAVER 18L LPG Water Heater 4.8GPM Propane Gas Tankless Stainless Instant Boiler 36KW Liq...

9.3
124 Reviews

Check Price
Show More
Product Highlights
Product: 18L Gas Water Heater; Water heater Type: Tankless; Heat Output Power: 36 KW; Gas Pressure(LPG): 2800 Pa
Hot Water Output: 18 L/min (4.8 GPM); Use Gas Type: Liquefied Petroleum Gas (LPG); Rubber Gas Hose(Outer diameter): 20 mm (0.79 inch)
Modern fashionable line shape designed, magnificent thin-shaped appearance; High efficient energy saving; Low water-pressure start up
Manifold auto protection, Lon flame inspection; Controller design, over heat protection; Over water pressure protection function, anti-freezing protection function.
Every type of water heater is only suitable for one kind of gas. This 18L water heater is ONLY for Liquefied Petroleum Gas (Propane).
9^th

Mini Instant Electric Water Heater Under Sink - 3kw at 220V 230V 240V-Tankless Hot Water H...

9.4
124 Reviews

Check Price
Show More
Product Highlights
【Ultra Mini Undersink Water Heater】Product size: 16CM*10.5CM*7CM, just a bit larger than your iphone 8 plus.
【Endless hot water】 No need to preheat before using. As soon as you open the tap, the water ﬂows with your desired temp in a few seconds. High efficient, saving energy.
【Eco & Electric & Water Saving】 Safe heater, save up to 55% on your electric cost, water saving, no pollution, no exhaust gas.
【Work Depend on The Flow】 Start to heat when the flow > 0.6 liters, and turn off when lower < 0.4 liters. The temp is between 30 ~ 55℃. If the flow is large, the temp will be low, if the flow is small, the temp will be high. Pls control the outlet temp on the display by adjusting the flow.
【Compact Design, Wide Use】Meets your various needs such as used in kitchen, bath room, public restroom, etc. Only for hand/face/dishes/vegetables washing, not for shower. (If need, choose our 5.5kw heater)
10^th

Instantaneous Electric Water Heater, 3KW/3.4KW/3.8KW Tankless Instant Electric Power Showe...

8.6
124 Reviews

Check Price
Show More
Product Highlights
■ 3 different specifications: 3000W/3400W/3800W to meet the needs of most families. Stainless construction with mini design, it is durable, elegant and fashionable.
■ This is a water heater for the application of changing the cold water into hot water and it will meet your various needs such as used in kitchen, bath room, public restroom, etc.
■ It is a high efficient water heater with compact size to produce the hot water very quickly.
■ LCD digital temperature display. Freely adjust water temperature by water flow, simple operation.
■ Safe heater, electricity saving, water saving, no pollution, no exhaust gas.

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