Having hot water at home will no longer be a luxury thanks to the electric instant water heater. In addition to its price, this device gives you water at the right temperature as soon as it is turned on, without limits and on demand, to make your shower sessions more comfortable. Check out our buying guide for the best electric tankless water heaters.
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"This is a high performance electric tankless water heater for a tight budget. It offers several features for a more comfortable home."
"This is a powerful tankless water heater capable of providing hot water for an average sized family. Equipped with an efficient and precise thermostat, it…"
"Of all the models on the market, this is the best high-end instantaneous electric water heater. With Stiebel Eltron DHB27ST, performance and comfort are the…"
"With an ultra-powerful electrical system, this tankless water heater offers high quality service. Easy to install, it has a power of 6,5 kW to allow…"
This is a high performance electric tankless water heater for a tight budget. It offers several features for a more comfortable home.
56,19 £ on CdiscountThis electric tankless water heater does not contain a tank. However, it is ultra compact with a size of 8 x 9 x 16.1 cm. With this small size, it will save a lot of space. Besides, you only need to install it in the place where you intend to use it. So, you will have hot water at will and at the second.
In terms of power, you will have a device with 7.3 kW, 230 V and 50 Hz. Moreover, you can use it for 8 years without it showing any sign of weakness. Even at full power, this tankless water heater consumes 3 times less electricity than other models on the market. The DAFI water heater requires little maintenance and is also equipped with an anti-tart system. The package also comes with a chrome plated metal faucet.
This is a powerful tankless water heater capable of providing hot water for an average sized family. Equipped with an efficient and precise thermostat, it offers an output temperature between 30 and 50°C.
55,48 £ on CdiscountThis is a stylish electric tankless water heater that will fit into a variety of bathroom styles. Discreet and lightweight, it is a sturdy shower equipment with a nickel-chrome alloy coating on the heating material. Operation is facilitated by the presence of a large LED display, allowing you to see the temperature, and touch-sensitive buttons. Ideal for a medium-sized family, this model is safe because it has an automatic shut-off function, or dry heating, and against overheating.
On the technical side, your electrical connection will need to support 29.5 amps. This allows the 6500 W of power to be deployed, enabling it to offer a water pressure of 0.6 Mpa with an adjustable output temperature of between 30 and 50°C.
Of all the models on the market, this is the best high-end instantaneous electric water heater. With Stiebel Eltron DHB27ST, performance and comfort are the key.
294 £ on AmazonThere is nothing to say about the quality side, it is by far the most efficient water heater. You will benefit from a power of 27 kW for a voltage of 400 V. It is very energy efficient and you can maintain the water temperature while using it. It is also very interesting for its size and weight. Indeed, the device has a size of 47 x 22.5 x 11 cm for a weight of 3.9 kg.
It is the comfort without waste, you can install the device in the water jet of the shower. It is also equipped with an electronic safety system with air detection. Moreover, it is suitable for water with low and high limescale content.
With an ultra-powerful electrical system, this tankless water heater offers high quality service. Easy to install, it has a power of 6,5 kW to allow you to take a shower at the right temperature.
62,24 £ on RakutenThe ETTOILE electric water heater is very suitable for comfortable use in the shower or in the kitchen. With a power of 6.5 kW and a voltage of 220 V, this device can provide hot water at any time. This type of water heater is equipped with a large LED display and can start even at low pressure.
It has a size of 29 x x19 x 6.5 cm, it is not bulky at all. In the package, you will get a heater, shower nozzle, hanger, outlet hose and a set of accessories for installation. It is very easy to install and there is nothing to buy since everything is already included in the package.
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The best electric tankless water heater in 2021
The best entry-level electric tankless water heater
The best large capacity water heater
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| TOP OF THE TOP | CHEAP | EXCELLENT | VERY GOOD | |
In accordance with our commitment, this buying guide does not contain any sponsored products. |
9/10 |
7/10 |
9/10 |
8/10 |
| OUR SELECTION |
Dafi electric water heater
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ZJCHAO Electric tankless water heater
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Stiebel Eltron DHB27ST
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Electric water heater ETTOILE
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This is a high performance electric tankless water heater for a tight budget. It offers several features for a more comfortable home.
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This is a powerful tankless water heater capable of providing hot water for an average sized family. Equipped with an efficient and precise thermostat, it offers an output temperature between 30 and 50°C.
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Of all the models on the market, this is the best high-end instantaneous electric water heater. With Stiebel Eltron DHB27ST, performance and comfort are the key.
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With an ultra-powerful electrical system, this tankless water heater offers high quality service. Easy to install, it has a power of 6,5 kW to allow you to take a shower at the right temperature.
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Quality
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Number of pieces
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1
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1
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1
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1
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Size
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8.6 x 9.1 x 16.1 cm
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29.5 x 18.5 x 6.5 cm
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47 x 22.5 x 11 cm
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29 x 19 x 6.5 cm
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Weight
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1.2 kg
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2.32 kg
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3.9 kg
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Power
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7.3 kW
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6.5 kW
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27 kW
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6.5 kW
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The water heaters available on the market range from 2,000 W to 30,000 W. The choice depends on the desired temperature and flow rate. For example, to obtain a flow rate of 4 L/min at 35°C for an inlet temperature of 10°C, a power of 7,300 W is required. Thus, you must first determine the use of the water heater (sink, shower) to define the desired flow rate and therefore the power required to obtain it.
Models equipped with an electronic control allow you to enjoy a constant temperature. Otherwise, it can become very unstable. This would be very unpleasant when showering for a relatively long time. Make sure that the temperature control knob is easy to operate.
In general, a small water heater can be easily installed by any good do-it-yourselfer. The question, however, is whether there is any additional work involved. For example, if you choose a high wattage model, it may require three-phase electricity and/or large wires, or at the very least a change in meter size.
The choice of a small or large water heater is primarily based on usage. For example, a small model is perfect for supplying a washbasin, but a larger heater is needed to obtain large volumes of water. You must therefore think about the place where you are going to install it to determine its shape and size. If it is visible (e.g. above the sink), a neat design is desirable.
In the South, the temperature at the entrance will necessarily be higher than in the North of France, especially in winter. You should therefore take this into account when defining the power of your electric instantaneous water heater. Moreover, in the French overseas departments and territories, water heating requires less power than in the UK. For example, about 5000W are enough for a shower, against 7500W in the UK.
A very useful piece of equipment, the electric instantaneous water heater allows you to obtain hot water on demand and quickly. Its operating principle is simple. With no tank, it will heat the water in record time thanks to an electric resistance installed in the device. So, as soon as you open the tap, you have hot water and the device will stop when you close the tap.
This appliance consists of a cold water inlet, a vacuum switch, a heating body with an electric resistance, a water flow control device, a hydraulic safety valve and a hot water outlet.
A vacuum is created in the heater when you call for hot water. This will activate the switch. The electric resistance will be heated. Then, the water is returned to the heating body to reach the desired temperature. In order to maintain this temperature, the flow rate stabilizes in order to reach its destination point.
For optimal operation, it is strongly recommended to install your electric water heater near the place where you use hot water. For example, under your sink, your washbasin or in your shower. Due to the fact that the power required plays an important role, a dedicated electrical installation is highly recommended.
The electric instantaneous water heater is a device for domestic use. It easily increases the temperature of the water from a resistance. Its operation is based on the opening of the hot water tap, which establishes a depression in the body of the heater so that the resistance heats the water. This type of appliance has become indispensable to all households, as it is practical thanks to its multiple advantages.
The electric instantaneous water heater can be installed anywhere in the house. Moreover, its temperature will always be the same and you just have to choose it. But its main drawback is its energy consumption. Your electricity bill will feel it! Among other things, the amount of water available for this type of water heater remains limited because of its small size.
The instantaneous gas water heater heats water twice as fast as an electric model. It easily produces hot water by burning propane or butane gas. This device will be your best ally for a profitable investment. Indeed, it consumes less energy than the electric instantaneous water heater, about a third less cost. In addition, it is easy to maintain.
Because of these components, you no longer need to descale. The only downside is that it can only be installed in a room near a window. In addition, the instantaneous gas water heater is a bit polluting because of its carbon dioxide emission.
The choice will depend on the number of people in your home, your consumption and what is appropriate for your home. Opt for the instantaneous gas model if you want to have it at your disposal for several years. Choose an electric tankless water heater if you want to install it in any room of your home.
To save energy
Unlike a tank, the tankless water heater provides hot water on demand, without the need to preserve heat. It is activated and consumes energy only when you want it. This is great for people who live alone, as there is no need to provide a large amount of hot water on a daily basis.
To save yourself the trouble of maintenance
Since there is no hot water storage, the presence of scale, bacteria and other dirt is avoided. Or at least reduced to a minimum. You no longer have to plan regular cleaning or use a descaling agent. It is also reassuring with regard to possible bacterial infections caused by water conservation.
To get hot water anywhere
Simply install the tankless water heater wherever you want. Its small size makes it easy to install and supply hot water to remote areas. Unlike conventional water heaters, its use does not involve long passages through pipes. The water is heated directly where it will be delivered.
To ensure your comfort without cumbersome installations
This type of water heater is made up of a compact unit, which can be easily fitted into a small area. Ideal for small apartments, it allows you to enjoy hot water at a satisfactory flow rate without having to worry about large equipment. In addition, installation is very easy if your hydraulic system is already compliant (no related work)
To benefit from a durable equipment
Ordinary water heaters have an average life span of 10 to 15 years. Electric tankless water heaters, on the other hand, last up to 20 years or more. This is an important advantage - you are investing in a device that will not break down after a while.
In our opinion, the best brands of instantaneous electric water heaters in 2022 are :
Or Dafi system is a brand of the company SaintBest which exists since 2005. The brand is positioned as the ecological solution for the future. Available mainly through online stores, Dafi offers products that will suit all budgets and homes.
Atlantic is a well-established and recognised French brand, expert in all types of heating systems and home comfort appliances, with a worldwide presence. Atlantic was founded in 1968.
De Dietrich Remeha is one of Europe's largest manufacturers and distributors of domestic and commercial water and space heating systems. Based in Apeldoorn, the Netherlands, it was founded in 2004. The brand offers robust and efficient products.
Thermex Corporation is an international commercial and industrial group of companies, the largest specialized water heater manufacturer in Russia and one of the largest in the world since 1949. The Heating Equipment full-cycle production plant is the main production facility of Thermex Corporation in Russia. The quality of Thermex products is 100% superior and reliable.
Veito is a renowned leader that sells its products in many countries. Veito's first product was an intelligent electric instantaneous water heater that became very popular. And the other product that launched the Veito brand is its first carbon infrared heater - a revolution in indoor and outdoor heating.
The diagram below will help you to get an idea of the typical prices for each price range (entry-level, mid-range and high-end).
However, more expensive does not necessarily mean better.
We therefore advise you to always consult our ranking before deciding, rather than blindly relying on price ranges.
Consider installing multiple tankless water heaters
If you live in a large house, it is likely that the water points are quite far apart. Therefore, it is advisable to install several tankless water heaters, instead of a centralized system. This avoids wasting energy and keeps the water flowing well even if several people are using hot water in the house.
Install your electric tankless water heater near a water source
As you know, water heats up directly on contact with the heater before it is directly available. Also, remember to install your water heater within three meters of the bathroom or kitchen water supply. Otherwise, the water may cool down in the pipes and the installation will have been for nothing!
Make sure that it is suitable for the electrical installation
The meter in your home must not only supply your electric water heater, but also several other appliances that may be operating at the same time as it. You must therefore make sure that the power of your water heater is lower than the power delivered by your meter. If not, your water heater will not be powered properly.
Descale your electric tankless water heater
To do this, start by disconnecting the appliance from the water supply and electricity. Next, unscrew the center plate and pull out the resistor. Then, soak it in heated vinegar for a few hours and gently brush it out. The tank should also be cleaned of lime sludge. Once the resistor is dry, you can put it back in the tank.
Limit the temperature of the electric instantaneous water heater
Too much strain on your water heater's resistor can become quite energy consuming. If possible, limit the water temperature by using the electronic control system of the tankless water heater. Ideally, the temperature should be set between 55 to 60°C to avoid the risk of scalding, bacterial growth and scaling.
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