Which instantaneous electric water heaters for showers are better: review of the TOP 10 models and customer reviews

To solve the problem of constant hot water supply in the bathroom, the easiest way is to install an electric instantaneous water heater on the shower. It has significant advantages over a storage device, which we will discuss in detail in this article. Let’s also pay attention to the disadvantages, the main one being the need for a special approach when providing electricity.

Also in this material we will provide recommendations for choosing a suitable water heater, including calculation of sufficient power. We will identify the best manufacturers of electric models, focusing on installation and maintenance. After all, for uninterrupted operation it is necessary not only to correctly calculate the parameters, but also to carry out the installation professionally.

How to choose and what to pay attention to?

There are several important criteria for choosing a flow-through electric heater. The most important of them are listed below.

Performance and Power Indicators

Power is the most important parameter on which the possibility of obtaining a certain volume of heated water in a certain unit of time will depend..

If residents need to take a shower or quickly prepare food, a low-power device that will heat three to five liters of water in one minute will be enough. Within 20 seconds the water will begin to warm up.

If the family is large and has significant needs, preference should be given to heater models with higher power.

The purpose of the water heater is usually indicated in the instructions for the device. Devices whose power does not exceed 8 kW are convenient to use in the country where constant heating is not needed.

NOTE!

The water temperature is 50 degrees - quite sufficient for taking a shower or washing a small amount of dishes.

If there is a need for the constant availability of a large amount of heated water, the device must be more powerful - from 20 kW and above. In addition, it is worth considering the number of water points in the house or apartment.

If the bathroom and kitchen sink are located next to each other, one medium heater will be enough.

If such zones are located far from each other, you will need to purchase a pair of low-power water heaters, or one powerful pressure device.

Operating and control modes

The design of an instantaneous water heater is quite simple, but such devices also have their own classification:

1. Hydraulic.
2. Electronic.

The hydraulic type of control is also called mechanical . Most inexpensive models are equipped with it. More often than others, a step switch is found, and the most budget water heaters may not even have the ability to adjust the water pressure or temperature.

The principle of hydraulic control is that when the device is operating, you can use levers or buttons to move the rod.

This part of the structure will change the force of water pressure, as a result of which its temperature will also change. The main disadvantage is that the degree of temperature control in models with a mechanical type of control is not very accurate. If the water pressure is weak, the water heater may not turn on at all.

The electronic control system allows you to control the water pressure and the degree of its heating much more accurately . Such water heaters are equipped with built-in sensors and microprocessors that are sensitive to changes in pressure and temperature changes in the line.

This allows you to change the current parameters to those that will fully correspond to the mode that the user chooses.

IMPORTANT!

The most modern device models also have an energy saving function.

If the water heating device will serve only one water distribution area, for example, a sink or shower, you can purchase a more budget-friendly mechanical model that can be adjusted at any time.

If you plan that the purchased water heater will serve several points at the same time, you should prefer a device with an electronic control unit.

Availability of additional functions

The main function for which the device is purchased is its ability to provide the house with hot water when the need arises.

However, this device may have other useful properties that may also be in demand by users.

The presence of a high-precision temperature sensor allows the instantaneous water heater to maintain the temperature of the water flow at the level chosen by the user

Among them:

• Thermal limiter. A small sensor built into the heater will prevent it from overheating, which means it will increase not only the safety of its use, but also its service life.
• High precision temperature sensor. The presence of such a function will allow you to heat water with an accuracy of one degree, eliminating possible temperature changes.
• Child lock. The function will not allow the child to turn on the heater independently. This function can be replaced by limiting the temperature regime to a threshold of 60°C.
• Periodic heating mode to maximum temperature. This mode allows you to disinfect water, improving its quality.
• A function that reduces water pressure and temperature during prolonged use of the device. This additional feature provides energy savings.
• Heating programming function. Programmed water heating can be activated via a timer. The program can be set for a day or a week.

Having a remote control for the water heating system is also considered convenient. It allows you to turn on and off the desired modes while away from home. The use of the remote control is especially effective if the device operates in a large country cottage.

Expensive equipment always attracts the attention of children, but not every device can be used as a toy, so child lock is a necessary additional feature.

Advantages and disadvantages

Advantages of instantaneous water heaters over boilers:

1. The main advantage of an instantaneous water heater is noticeable to the naked eye. This is the absence of a storage tank for storing heated water. Thus, the device becomes compact in size and you will have more options for its placement, since it does not require a lot of free space. Both the bathroom and the kitchen area are suitable. Storage boilers in this regard cause much more problems.
2. Another important advantage of an instantaneous water heater is its ability to produce hot water in virtually unlimited quantities for a long time. In a boiler, this possibility is greatly limited by the size of the storage tank, so if the volume of heated water has already been consumed, you will have to wait, sometimes for several hours, until the unit heats it up again.
3. Inexpensive maintenance compared to boiler models, due to the absence of an anode.
4. The cost of an instantaneous water heater is significantly lower than that of a model with a hot water storage tank.

The disadvantages include the following features:

1. A flow tank that does not have its own pressure is capable of providing hot water supply to only one water supply point. Pressure models, which can supply heated water to an entire cottage or apartment at once, require a system that will maintain the pressure at the required level.
2. In order to quickly heat a large volume of liquid, for taking a bath or washing a large amount of dirty dishes, you will need to purchase a device with a power exceeding 8 kW. In winter, this figure should be at least 12 kW due to a decrease in the temperature of the water in the pipes.

Features of choice

In most country houses, an instantaneous water heater with a power of 3 to 8 kW with a 220V network is sufficient. You should consult an electrician before purchasing the device. If necessary, it is necessary to carry out work to replace the electrical wiring in the country house. Experts give the following recommendations regarding the correct purchase of flow-through equipment :

• before you go shopping, you need to pay attention to the wiring in your country home and determine its quality;
• when you are in a store and choosing a water heating installation, you need to know the purpose of its operation, its dimensions and the place where it will be located;
• if you need a model with high power ratings, then the value of this parameter should be at least 8 kW. You also need to remember that you cannot connect such an installation to a 220-volt outlet. For reliable operation of these devices, a three-phase socket with a voltage of 380 V is required.

Many summer residents have already become convinced that instantaneous water heaters are the best solution for their summer cottage. People who have already had experience using them on their sites speak extremely positively about them. Many people like that the installation process of these devices is quite simple and does not contain any complicated aspects. Another advantage is that when using a flow-type water heater, there is no need for frequent maintenance.

Rating of TOP 10 best models

Video description

The following video explains how easy pre-made titanium is to install:

Solar water heaters

Such devices heat the storage device using solar panels. They are assembled from long tubes made of glass. Inside, such elements are filled with special compounds. They enhance the absorption of the sun's rays and produce energy that can be used to heat the storage device. It is difficult to find a more environmentally friendly installation today.

But such a system has two significant drawbacks:

1. On days when the sun is densely covered by clouds, you may be left without hot water.
2. The profitability of installing solar panels is most often a big question mark, especially if hot water is needed at the dacha from time to time.

Installations that heat water using the sun Source legkovmeste.ru

The best instantaneous electric water heaters for showers

Thermex Surf 3500

A small, lightweight water heater with a wide range of installation options . Installation can be done above or below the sink, so the device can easily find its place even in a small bathroom or kitchen.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• White color;
• control - hydraulic;
• power - 3.5 kW;
• dimensions - 13*18*6.8 cm.

Advantages:

• low price;
• compactness;
• overheat protection.

Flaws:

• lack of a switch;
• weak pressure.

Timberk WHEL-6 OSC

A instantaneous water heater will allow you to use hot water every day . Increased power allows you to produce 4 liters of heated water per minute.

The maximum heating temperature is 85 degrees.

The modest dimensions of the device allow it to take up a minimum of free space.

The device is equipped with a special valve to automatically disconnect from the network when not in use. The delivery set includes a faucet, hose and shower head.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• White color;
• control - mechanical;
• power - 5.5 kW;
• dimensions - 27*15.5*10.5 cm.

Advantages:

• overheat protection;
• heating indication;
• faucet and shower head included;
• compactness;
• stable work.

Flaws:

• No.

Hyundai H-IWR1-3P-UI057/S

The device has an elegant appearance that will decorate any interior . There is an indication of the operation of the device. The heating element is made of copper, which not only conducts heat well, but also purifies water.

Maximum heating level - 85 degrees.

The case is reliably protected from moisture. Faucet and shower head included.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• color - white/gray;
• control - mechanical;
• power - 3.5 kW;
• dimensions - 25*15.5*9.5 cm.

Advantages:

• compactness;
• affordable price;
• simple controls.

Flaws:

• short power cord;
• The shower hose is not flexible enough.

Electrolux Smartfix 2.0 6.5 TS

Compact device for hot water supply to one water intake point . The heating system is hydraulic, productivity is about 3.7 l/min.

Heating temperature - up to 80 degrees.

When you close the tap, the water heater will disconnect from the network automatically. The package includes a hose and shower head.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• White color;
• control - hydraulic;
• power - 6.5 kW;
• dimensions - 27*13.5*10 cm.

Advantages:

• compactness;
• low price;
• high power;
• good build quality.

Flaws:

• requires a separate connection to the electrical panel.

Stiebel Eltron IS 60 E

The temperature can be regulated both by pressure force and using a special regulator . The equipment is equipped with overheating protection and a built-in RCD to ensure safety. The housing is equipped with protection against jets of water.

Gravity water heater with high power level, equipped with shower accessories:

• watering can;
• hose;
• soap dish;
• barbell.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• color - white/black;
• control - electronic;
• power - 6 kW;
• dimensions - 21*35*9.6 cm.

Advantages:

• overheat protection;
• protective shutdown function;
• convenient control;
• The waterproof housing is not afraid of water jets.

Flaws:

• the need to arrange a separate power supply;
• high price.

Timberk WHEL-3 OSC

The flow-through design of the water heater will allow you not to limit the needs of your household for hot water . The device is wall mounted and takes up little space.

The water heater comes complete with a faucet, hose and shower head..

There is an indication of device operation and a safety shutdown valve

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• White color;
• control - hydraulic;
• power - 3.5 kW;
• dimensions - 27*10.5*5.5 cm.

Advantages:

• nozzles included;
• compact size;
• easy connection.

Flaws:

• There is no RCD included, you need to buy it yourself.

Ariston Aures S 3.5 SH PL

This water heater is installed horizontally and can provide residents with the necessary amount of hot water for domestic and household needs.

The maximum heating temperature is 55 degrees, which increases the safety of use. The front panel has indicators of operation and heating level, there is a built-in thermostat and overheat protection.

The delivery set includes elements for fastening and shower accessories + faucet.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• White color;
• control - mechanical;
• power - 3.5 kW;
• dimensions - 29*18.3*9.8 cm.

Advantages:

• presence of a built-in thermostat;
• reliability;
• stable operation from a regular network.

Flaws:

• no tap included;
• Some buyers complain about weak heating.

Electrolux Smartfix 2.0 5.5 TS

The water heater is equipped with a tap, hose and shower head . The control panel allows you to set the degree of water heating in one of three levels, up to 50 degrees.

The case is equipped with splash protection, the device is protected from overheating and scale formation.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• color - white/gray;
• control - hydraulic;
• power - 5.5 kW;
• dimensions - 27*13.5*10cm.

Advantages:

• modest dimensions;
• high-quality heating;
• convenient control.

Flaws:

• No.

Zanussi 3-logic 3.5 TS

A compact instantaneous water heater quickly heats water to the desired temperature when the tap is opened . The device has modest dimensions.

It is possible to work in one of three power modes with high performance.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• White color;
• control - mechanical;
• power - 3.5 kW;
• dimensions - 30*20*12 cm.

Advantages:

• cord and plug included;
• possibility of simultaneous connection of faucet and shower;
• fast heating.

Flaws:

• with low pressure, very low heat.

Stiebel Eltron IS 35 E

The non-pressure instantaneous water heater is of the open type . The temperature can be controlled by the water pressure and regulators on the device itself.

The device is equipped with a built-in RCD, which increases the safety of use and protects against overheating, as well as against drops of water..

The water heater is very compact.

Characteristics:

• installation - vertically, on the wall;
• eyeliner - bottom;
• color - white/black;
• control - electronic;
• power - 3.5 kW;
• dimensions - 21*35*9.6 cm.

Advantages:

• high quality;
• stable heating;
• RCD included;
• comfortable shower head.

Flaws:

• high cost if bought without discounts.

Design of a protective grounding loop

The most common version of such a circuit is a triangle of metal grounding conductors connected by a steel strip. The same strip is displayed on the wall of the building, then connected to the electrical panel body with a copper bus.

How to properly make grounding in the form of a triangle:

1. Purchase 3 grounding rods - smooth or corrugated reinforcement rods Ø16 mm, each 2 meters long. For connection you need a strip of 40 x 5 mm.
2. At a distance of 3 m from the base of the house, dig a pit in the form of a triangle with a side of 2 m. Depth - 0.5 m.

3. Sharpen the ends of the reinforcement and drive it into the ground to its full depth. The driving points are the vertices of the triangular pit.
4. Weld a steel strip to the ends of the rods, as shown in the photo. Lead the end of the strip through the trench to the outer surface of the wall. Attach the tire to the base and weld a bolt at the end.
5. From the shield, lay a copper busbar outward and screw it to the strip. The ground loop is ready.

Before burying the hole, treat the steel contour elements with bitumen mastic. How to make grounding for an electric heater with your own hands is clearly demonstrated in the video:

Bath or shower

If you have a bathroom, the volume of the heater should be much increased, because if you calculate its water consumption ( read here ), it becomes clear that the small option will not fill it even halfway, then you will have to wait again for it to heat up. For a bathroom, I recommend a volume of 100 or more liters (enough for one person).

For a shower stall, if you use economical plumbing fixtures or linings, you can get by with a smaller option. 50 - 80 liters is enough; with such pads, this volume is enough for 2 people to take a shower.