Best Water Heaters 2025

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Last Updated - 09/06/2025

Best Choice

01

Stiebel Eltron

STIEBEL ELTRON DHE 202656 Fully Electronic Instantaneous Water Heater 18/21/24 kW, Always Accurate Temperature, Energy-Saving Thanks to 4i Technology, MFD, Eco Mode, Wellness Programs, VDE Tested

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9.8

Exceptional

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.

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Main highlights

Safety: adjustable child lock against accidental adjustment and overheating protection; in addition, a permanent scald protection can be set by the skilled craftsmen
Installation: time-saving installation thanks to the professional rapid installation system and effortless replacement of all standard instantaneous water heaters; high power connection optionally at the top or bottom
Energy-saving: saves up to 30 percent energy and water thanks to the 4i technology and the fully electronic power control; individually selectable ECO mode for particularly economical operation
Country approval: Germany, Belgium, Austria, France, Poland
Comfort features: precise desired temperatures at any time thanks to the electronic flow rate control; the temperature is continuously and digitally adjusted with a rotary selector in 0.5 °C increments; rotating device cap and control unit for increased ease of use when mounting under the sink
Box contents: Stiebel Eltron hot water generator DHE 18/21/24, wall mount, reception module, special accessories (see below), operating and installation instructions (English language not guaranteed)
Areas of application: electric instantaneous water heater for the degree-accurate and always constant hot water supply. Multiple removal points, e.g. in the bathroom; the closed, pressure-resistant device can be used with all standard pressure fittings

692,01 €
02

Briwellna

Electric Instantaneous Water Heater 5.5 KW, Tankless Streamline Water Heater Point-of Use with Digital Display, Under/Above Sink On-Demand Hot Water Heater 220 V (White)

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9.6

Exceptional

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.

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Main highlights

Save energy and time: Equipped with the latest integral cast aluminium heating technology, this water heater produces instant hot water without storing water, preheating devices or an attemperature, saving power consumption, water, time and space. It can be shut off by turning off water or power supply
On-demand, limited hot water: Briwellna non-thermostatic tankless electric water heater is ideal for a single sensor faucet or a single metering faucet for hand washing and other fixed-flow applications.
Multiple security protection: Smart protection functions protect the product from leakage, over-temperature, dry heating and over-pressure. We offer one-year warranty.
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.
Easy installation: comes 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).
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.

139,99 €
03

AEG

AEG Boiler BOI 5 U, Under-Sink Boiler 5 Litres Low Pressure with Plug 230 V for Kitchen Sink and Wax Basin, 2 kW, 204616

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9.5

Excellent

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.

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Main highlights

Safety and quality: child lock thanks to adjustable temperature limit/scald protection; tested safety by VDE testing institute, frost protection, made in Germany
Installation: easy installation, with plug (socket and cold water connection sufficient), under-sink mounting
Energy-saving functions: high quality thermal insulation, low standby consumption, energy efficiency class A
Comfortable operation: selectable desired temperature, infinitely adjustable from 35 to 85 °C
Box contents: a AEG small storage, operating and installation instructions (English language not guaranteed), wall hanging
Areas of use: open boiler 5 l under-sink for a water point in the kitchen and bathroom; Warning: use only with low pressure/pressureless tap – recognizable on the 3 connection hoses – hose shower fitting is only to be used with kink protection

67,90 €
04

GelldG

Immersion Water Heater, 2500 W Electric Submersible Heater with 304 Stainless Steel Cover and Thermostat, Automatic Shut-Off, Heats 5 Gallons of Water in Minutes

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9.3

Excellent

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.

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Main highlights

Wide range of applications: Our portable water heater is suitable for mobile phone and super lightweight, making it perfect for travel and road riding. Note, only for water heating.
Safe design: the instant water heater with high-quality cover made of stainless steel effectively prevents the heating element from direct contact with people or animals. It is rust proof and durable, design for long-term use. Our Immersion water heater has an intelligent temperature control design that automatically breaks out the power when the water temperature reaches 75 °C. The quality is safe, stable and reliable.
Note: 1. People cannot touch the water while the bathroom heater is connected to the power. 2. Before switching on, please make sure the bucket heater is completely submerged in water. 3. Unplug the power supply before removing the water heater from the bath heat and using hot water. 4. For heating at the same time, more than 2 portable water heaters are required. Do not connect two camping water heaters into the same outlet to avoid fire hazards!
Efficient heating: The immersion water heater is 1500W/2500W. Porous design with good thermal conductivity. When you are on the go or on the go, the water heater of the high-performance shovel can quickly heat up to 5 gallons of water within minutes and save you time and power consumption. If you have a lot of water, simply increase the heating time.
Easy to use: the immersion water heater is easy to use, simply place the electric heater in the water container and completely cover the hot water with the heating element in the stainless steel protection and then insert it into any grounded wall cavity. Note: the power cord and black handle should not be submerged in water.

36,29 €
Value for Money

05

Philips Domestic Appliances

Philips Kettle - 1.7 L Capacity with Control Indicator, Pirouette Base, Black (HD9318/20)

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16% Off
9.2

Excellent

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.

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Main highlights

Wireless and comfortable: easily lifts off the 360° pirouette base for convenient pouring
Enjoy hot drinks in no time at all: extremely efficient, flat heating element for boiling hot water in seconds
Easy to clean: spring-loaded lid with large opening for effortless cleaning - button opening so that any contact with steam is prevented
ELEGANT INDICATOR LIGHT An elegant built in LED light in the on/off switch lights up when the kettle is on
1.7 litre capacity: more than 7 cups with maximum filling

24,99 € 29,99 €(16% Off off)
06

MSYLF

MSYLF 230 V Instantaneous Water Heater, Electric Tap, Stainless Steel Kitchen Tap with Readable LED Temperature Display for Camping Kitchen, Motorhome, Kitchen, Garage Hall, Tap with Heating 3-3.5 kW

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11% Off
9.1

Excellent

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.

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Main highlights

Water connection: stainless steel housing with plug. Cable length: approx. 100 cm. With a heating output of 3-3.5 kW, you should make sure that the fuse of the circuit is designed high enough. Simply ideal for use anywhere you only have cold water and a socket nearby.
Two different nozzles are included, one fixed and one can be swivelled in different directions. Depending on the flow rate, you can reach temperatures between 40 and 60 degrees, so enough to wash your hands warm or rinse a little. Also helps to save water on hand sinks. If you do not want to buy an expensive instantaneous water heater and want to save the electricity from the boiler, clear recommendation from us.
The package contains a 3/8 to 1/2 water inlet connection hose: stainless steel housing, matte material is super modern, the workmanship is good and solid. Quickly warm water without long preheating. It also has a neatly readable LED temperature display. Ideal for hand washing, washing dishes. Camping kitchen/caravan/kitchen, garage hall etc.
The heat output changes with the flow rate. The display then shows how warm it is and it changes seconds when you change the quantity, in cold water the display. The more you increase the flow, the less hot the water is. as the water runs faster through the heater. With low flow, almost 60 degrees can be reached.
The cable with plug can be run above the sink or down into the cabinet. The tap hole had to be slightly enlarged for installation. Then it was very easy. Screw through thread and then connect the water with the included hose. Before inserting the plug, run cold water briefly to fill the line.

38,99 € 43,99 €(11% Off off)
07

Versuni

Philips HD9350 / 90 kettle (2200 watts, 1.7 liters, stainless steel)

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34% Off
8.9

Very Good

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.

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Main highlights

Stainless steel design: Made of durable brushed food-grade stainless steel for long term and reliable daily use
Elegant indicator light: An elegant built-in, blue light indicator in the on/off switch lights up when the kettle is turned on.
Easy to clean: Spring-loaded lid with large opening for effortless cleaning, button opening so that any contact with steam is prevented.
Durable design: Durability combined with excellent heat output thanks to an extremely efficient, flat heating element.
1.7 litre capacity: more than 7 cups with the maximum filling

32,79 € 49,99 €(34% Off off)
08

Emerio

Emerio WK-119988 Glass Kettle, 1.7 Litre, 2200 Watt, LED Interior Lighting, 360 ° Base, Silver

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8.7

Very Good

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.

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Main highlights

Wireless and suitable for left and right-handed on a 360 ° base.
Glass kettle made of borosilicate glass for absolute taste neutrality and maximum heat resistance.
Elegant glass / stainless steel look.
Automatic switch-off, overheating protection and boil-dry protection.
1.7 litre volume, LED illuminated glass body, anti-limescale filter.

25,99 €
09

Hoberg

Hoberg Stainless Steel Electric Instantaneous Water Heater, Powerful Heating Coil, LED Temperature Display, Flexible Use in the Garden, Workshop, Patio, Caravan, Rustproof and Robust

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23% Off
8.6

Very Good

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.

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Main highlights

Simple: the compact universal instantaneous water heater is easily operated via a power connection (220-240V). Simply screw onto the water connection, plug in the power cable - the installation is ready and the water heater can be used.
Fast: thanks to the powerful heating coil with 3600 W power, the water gets warm quickly - without long preheating and without water reservoir. The water temperature can be up to approx. 60°C (depending on the water pressure and attachment).
Durable and flexible: the water heater is made of rust-proof and robust stainless steel and with the plug-in connection adapter is ideal for various applications, such as in your own garden, camping and many more.
Compact: The small instantaneous water heater with powerful heating coil is simply ideal for almost all water connections with an obvious power connection - whether in the garden, the workshop, on the terrace or as a water heater when camping.
Clear: with the digital LED temperature display, the degree number can be read accurately and easily. The display can be rotated 360° so it can be flexibly attached to the left or right side of the water connection.

37,99 € 49,49 €(23% Off off)
10

Aigostar

Aigostar Eve 30GON Glass Kettle with LED Lighting, 2200 Watt, 1.7 Litre, Boil-Drying Protection, BPA Free, White -, Adam

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8.5

Good

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.

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Main highlights

Unique design: Roll the cable at the bottom of the bottom, it is easier to store; removable and washable spout filter to ensure the purest results, with a scale for more convenient use.
Safety: Boil dry protection when it is switched on, but there is no water in the kettle and the hidden heating element automatically turns off when boiling, making sure you never reach the burning point.
Illuminated LED indicator light: The illuminated display on the glass kettle gives you visual enjoyment. Perfect for your kitchen or pantry.
Durable and fast kettle: 1.7 litre body made of high borosilicate glass, which is durable and dirt-repellent. With 2200 watts of power, it takes less time to boil water.

17,99 €