Which instantaneous electric water heater to choose: characteristics of models, principle of operation. How to choose an electric running water heater - an overview of models with specifications, photos and prices

Regular is a real headache for many of our compatriots. The deterioration of networks and frequent repairs lead to the fact that even in the middle of winter you can be left without hot water.

That's why it's so popular electrical Reviews about them are very diverse, and therefore we decided to analyze the most common ones, making final conclusions about the advantages and disadvantages of this kind of equipment.

Principle of operation

Judging by the reviews, fans of the “protochniks” are especially impressed by their ability to instantly heat water. I came home, plugged the plug into the socket ... and you can immediately wash or wash the dishes! Agree with cumulative models in this regard is much more difficult.

The fact is that a powerful heating element is installed in such heaters, which can immediately heat the water passing through it even under conditions of decent pressure (in theory).

Among other things, devices flow type consume a relatively small amount of electricity, as they work strictly for the required time. If we talk about storage varieties, then they spend a lot of energy to maintain a given water temperature.

Other remarks

In general, the power range of "protochnik" ranges from 5 to 27 kW. Reviews show that for taking a shower and washing dishes, the device is most often enough for a “modest” 8 kW. Such a flowing electric water heater, the price of which starts from 2-3 thousand rubles, is available to almost everyone. But if you intend to splash in the bath, which is filled from such a water heater, you will need a 380 V network and specialists who will stretch it.

Moreover, you should not save on the latter: only qualified electricians with normal experience should do the wiring for such a powerful consumer, and not “Uncle Vasya” from the next entrance, who once screwed in light bulbs in one of the many state-owned enterprises.

So for what purposes can electric instantaneous water heaters be used? Reviews of people who actually use them indicate several areas of application.

If hot water sources in the city are constantly unavailable, and the wiring allows you to connect such powerful consumers.
As a backup tool for short-term shutdowns of hot water.
In the case when you will use a water heater to provide hot water to the builders of a country house.

In the latter case, a flowing electric water heater, the price of which is low, may well serve as an excellent disposable “heater”, which is not a pity to send to a landfill after construction is completed. Given that in the evening and morning (when there is a need for hot water) the network at the facility under construction is free, the wiring must withstand.

The reviews in this case are positive, since it is the speed of heating water for domestic needs that is extremely important for builders.

The aesthetic side of the issue

What else is good about instantaneous electric water heaters? Reviews indicate that their other attractive feature is compactness: such a device can be placed somewhere in the corner of a bathroom or kitchen, and it will be completely invisible. Compare that to the huge tank of a storage boiler!

Oddly enough, but this is where the main wave of enthusiasm ends. The fact is that the very principle of their operation makes flowing electric water heaters unacceptable for many houses and apartments in our country. People's reviews say that in best case before starting their operation, you will need to completely change the wiring, which is far from affordable for everyone.

The fact is that for the most primitive model you need at least 5 kW, and if you want to wash not under a weak stream of water, but under a normal shower, it would be better to provide at least 10 kW. Needless to say, it is electrical network is not in every new cottage settlement.

In most villages, people do not even think about buying instantaneous heaters, since the local network does not hold more than 3 kW.

Consumers unanimously say that you should not buy cheap Chinese models, the electronic components of which rarely withstand operation. longer than a year. In the event of its failure, you can expect a lot of not too pleasant surprises, up to rinsing with boiling water.

Combined Solutions

It is advisable to buy an electric one complete with a battery water tank. The Internet is full of sad stories that tell about a sudden shutdown of water right in the middle of a “bathing day”. If you have at least a small reserve of water in such a tank, then you can wash off the foam from yourself. Of course, it will not be too pleasant to complete the procedures in the complete absence of hot water, but in any case it is better than “soap runs” around the apartment.

Thus, an instantaneous electric water heater is ideal for summer cottages. Of course, if you have the opportunity to make a separate tap from the meter, and also change the wiring to copper (if it has not changed for a long time). Reviews indicate that these devices are extremely useful, "eat" relatively little electricity, and therefore are simply irreplaceable in some situations.

A huge plus is the fact that the scale on the heating element of such equipment simply does not have time to be deposited, so in maintenance these water heaters almost do not need.

Choosing the best model

Now you know what an instantaneous electric water heater is. How to choose the most optimal model that will fully meet your needs?

Of course, for this you need to analyze your requirements, because without this you will spend your own money ineptly. First, why do you need a "protochnik"? If for a short-term supply of hot water to the house, then look at the models from ELECTROLUX or ATMOR of the lower and middle price categories.

They cost in the range of 1600-2500 thousand rubles, which makes them affordable even for buyers with a very limited budget. The power of such models ranges from 2.5 to 5 kW, which allows them to be used in most apartments and rural houses without the need for major wiring upgrades.

In addition, in this price category you can even find a relatively good flowing electric water heater with a shower. However, customer reviews immediately warn that you should not delude yourself especially: the pressure of the jet is so-so, and when you try to add it, the water temperature drops significantly. There is little pleasure in washing with cool water.

Would you like a bath?

Thus, if you want to have something more substantial, you will need a normal flowing electric water heater for the shower. Models from THERMEX proved to be excellent. Their cost is approximately 6-7 thousand rubles, which is not so much. As a rule, they are equipped with a mechanical temperature controller, their power is in the range of 5-8 kW.

In this case, all buyers already say that it is highly desirable for a more reliable one. In addition, consumers are advised to use the services professional electrician, since for such power it is highly desirable to make a separate tap from the meter in order to avoid different kind trouble.

The most powerful varieties

Finally, flow heaters for constant and unlimited supply of hot water to the entire house - we strongly (!) do not recommend saving on such a purchase. The list of well-established manufacturers is wide: Bosh, ELECTROLUX, THERMEX, LG ... They are united by one thing - demanding operating conditions.

Despite the power of 10-15 kW, the wiring must withstand all 20 kW. The network is needed for 380 V. In addition, engage in self-assembly we strongly do not recommend this kind of technique, as the consequences can be sad. In a rural setting wooden houses it is generally undesirable to use such powerful equipment, since this poorly correlates with the fire-fighting requirements of the relevant authorities.

In this case, it is better to purchase a more or less voluminous storage boiler, which is much safer in this regard.

In what cases is it undesirable to buy flow heaters?

Dealing with everyone positive aspects and recommended manufacturers, let's discuss those situations in which the use of flow heaters is not only pointless, but simply dangerous.

Firstly, it is better not to buy them if you need hot water regularly and in significant quantities, but even the meter in your apartment is designed for a maximum of 10-16 A. This is not uncommon in our country. You will be able to supply a heater with a maximum of 3 kW (!), which even in the most optimistic case can only provide you with warm water for washing dishes.

We talked about the fact that flow models are not too sensitive to hard water. This is true, but if cloudy water with impurities often flows from your tap, it would be better to buy a conventional boiler. In this case, even a filter will not save the situation: reviews indicate that flow heaters are extremely quickly clogged with the smallest organic impurities, after which their heating elements fail. It's impossible to replace them.

More about wiring...

Also, if your house has at least one junction of aluminum and copper wiring (which in itself is very bad), and even located close to where you are going to connect the "probe", the idea of \u200b\u200bbuying one is not too good. In this case, there is a high probability of the formation of a galvanic couple and the destruction of the wire, which will almost certainly lead to a fire.

Buyers of flow heaters confirm that during their operation, cheap Chinese sockets can heat up to such an extent that they begin to melt. What this is fraught with, you can guess for yourself. So before installing such equipment, be sure to change not only the wires, but also other accessories, since it is not recommended to joke with such things.

Instead of a conclusion

In general, reviews of instantaneous electric water heaters are quite the same. As a rule, buyers are attracted by the ability to heat water almost instantly, they really like their compactness and extremely low cost.

But almost all of them agree that in most cases you have to pay a tidy sum for a complete replacement of the wiring and the installation of more powerful machines. In addition, there is no water reserve (you can buy an additional accumulator), which is very important for rural areas and small towns, where water supply cuts are not so rare.

However, instantaneous electric water heaters, the price (reviews are also very good) of which are so low, fully deserve their part of the market as small and compact sources of hot water in case it suddenly disappears from the tap.

In addition, no one will forbid you to combine two types of heaters: put a flow-through model in the kitchen, which is quite enough for washing dishes, and even get a large boiler for the bathroom, which will additionally play the role of a water reservoir.

Choosing an instantaneous electric water heater becomes a top priority for a demanding household during planned outages or frequent interruptions in the supply of hot water. As you know, not all houses and apartments have hot water, not to mention summer cottages. For its heating, various devices are used, in particular instantaneous water heaters.

These options have significant differences. The traditional instantaneous electric water heater is more compact and mobile, making it possible to get hot water anywhere, only if electricity is available. The choice of such a device will be discussed in the following material.

The presence of a constant source of hot water is one of the main criteria for a comfortable stay. Flow type water heaters are designed to meet the needs of hot water in the absence of other ways to obtain it (centralized supply, gas water heating equipment, and so on).

Instantaneous electric water heater - the purpose of the device

Electric instantaneous water heaters can meet different need in water - from a single kitchen faucet to medium-sized production lines. This requires appropriate parameter values electric current. Flow EWHs are mainly used for short-term replacement of a permanent source of hot water supply due to the high cost of heating water with electric energy.

Structural elements

The design of an instantaneous electric water heater, as a rule, is the same in all models and it looks like this. Electric tank built into the metal tank a heating element(TEN). The tank has two threaded pipes - cold water inlet and hot water outlet. Cranes are installed on the nozzles to enable the removal and repair of equipment. Further, the taps are usually connected with the help of flexible hoses to the networks, respectively, of cold (source) and hot water.

Perhaps the most expensive and important in the device is the heating element - the heating element. Its purpose is to heat the water flowing through the heater. When water pressure is created, the built-in pressure switch is activated in the device. It includes the work of the heating element.

Inside the body, on the body of the copper bulb, there is a thermal cycling interrupter. This is a sensor that ensures the safety of people and the device itself in case of exceeding the maximum allowable temperature water. If the temperature reaches a critical value, the breaker will turn off the heating element.

However, the main problem during the operation of a flow-through EWH is the failure of the heating element due to constant increased thermal and electrical loads. Replacing it does not present any difficulty and does not require special skills, the only negative is that the heating element fails at the most inopportune moment.

You can regulate the temperature of the passing water with a thermostat located on the body of the device. Also, the temperature can be changed by changing the water pressure if the water heater is not equipped with a water pressure stabilizer (in expensive models).

The principle of operation of the instantaneous electric heater

Heating of water is carried out directly at opening of the crane, during passage of a stream of water through a heating element. Water enters the tank, and then it is already heated, it is supplied to the draw-off point. As a standard, instantaneous electric water heater has a system automatic actuation. When the water tap is opened, the heater is switched on, and when the tap is closed, it is turned off.

Flowing electric water heaters have standard automation. A flow sensor is installed on the hydraulic path. Thus, at the beginning of the water intake (opening the mixer), a certain amount of water flow is formed, and the sensor gives a command to turn on the heating element. Accordingly, when the water flow stops, the heating element is also turned off (otherwise it will simply burn out).

The whole device is small and enclosed in a decorative plastic case. You can find the use of miniature instantaneous water heaters that are installed directly on the mixers, but due to their fragility and inconvenience of location, the instantaneous water heater on the faucet is of little use.

Most instantaneous water heaters are equipped with mechanisms for regulating the leaving water temperature (either by temperature value or by its range). Electric instantaneous water heaters have a metal body increased strength and the most saturated safety automation - safety valves, sensors, and so on.

Advantages of instantaneous water heaters

We briefly list all the advantages of flow type heaters:

1. The instantaneous electric water heater can be placed anywhere due to its compact size. Even for limited space, you can choose from a huge range of models that are suitable in size.

2. The second plus, a continuation of the first, small dimensions save space and do not take up useful space in the bathroom or kitchen.

3. Fast water heating. It is enough to open the tap, and after a couple of seconds we get warm water. In addition, there is no stagnant water and the possibility of the development of pathogenic microorganisms is cut off, in particular, there are no prerequisites for the emergence of Legionella bacteria.

4. Economical energy consumption due to switching on only after water supply.

5. There are no restrictions on the volume of passing heated water. Probably, this advantage should be put in the first place, an instantaneous electric water heater provides comfortable use of warm water without absolutely limiting you in time and volume. Water heating takes as long as the whole family needs.

6. It is possible to change the water temperature.

7. Acceptable cost. Instantaneous electric water heater is available in large assortment with a focus on different thickness wallet, there are always options where the price has a symbolic meaning.

Disadvantages of instantaneous water heaters

Unfortunately, not everything is so rosy and we have to talk about the disadvantages that an electric instantaneous water heater is endowed with. It's fair to say, low temperature regime, usually the water temperature does not exceed 45 °C. In a cold winter, due to the icy incoming water, the flow can not cope and at the exit we will most likely get a barely warm stream. The flow design usually does not keep up with bringing cold water to the required temperature.

The second significant disadvantage is the need for high-quality wiring from metering devices with automatic plugs to the point of connection of the instantaneous water heater. The instantaneous electric water heater has a power that is not small, which will provoke increased load on the wires, with their further burnout. The bulk of the modifications available to the flowers are sold on store shelves with a power of 8 to 10 kW.

That is why, in old house, most likely there will be a need complete replacement wires with an increase in their cross section.Calling the master, with a viewto bring a separate eyeliner from the counter and equip it with a stopper with an automatic machine, will entail additional financial expenses.

With a large consumption of heated water, it is more advisable to install. About energy savings are out of the question if an instantaneous electric water heater is used for a significant amount of liquid. Use a protochnikunder conditions of increased preparation of heated water - means a complete lack of benefit.

Choosing the right water heater

Choosing an instantaneous electric water heater is a feasible task even for a beginner in matters of water supply. In order for the model you have chosen to fully satisfy your needs, attention should be paid to the device parameters listed below:

Pressure or non-pressure?

Pressure models are mounted in houses with several water intake points. They crash into breaks in water pipes. As a rule, they differ in more solid dimensions, increased power and high cost. Heating of water joins automatically at opening of any crane of water supply.

Non-pressure models are used at individual water intake points. If the house has several taps where hot water should be, it is recommended to purchase a separate water heater for each of them. Their power usually does not exceed 8 kW. Popular for summer kitchens, country houses, bath.

Single phase or three phase?

Choosing a model for this indicator is quite simple. If the building has one phase, then the device should be bought single-phase. The power of single-phase devices does not exceed 12 kW.
If there are three phases, focus on three-phase heaters with increased power ratings. Their power is usually 10-36 kW.

Power

The intensity of water heating depends on this characteristic, depending on its pressure. We can say that this is the main criterion by which an instantaneous electric water heater is selected for various installation locations. Simple non-pressure models have enough power of the order of 3 kW. It is for this indicator that most compact and inexpensive models are designed. For summer cottages and summer kitchens, this is quite enough, unless you plan to use the maximum water pressure in winter.

Standard city apartment, will require more power and should, in this case, purchase a protochnik with an indicator of up to 8 kW. A power of 4.5-6 kW is already enough to provide a solid pressure of hot water all year round.Of course, for complete relaxation in hot tub it will not be enough, but washing the dishes and rinsing in the shower is more than enough.

If, nevertheless, you want to relax in a hot bath and enjoy abundant foam, you should check the possibilities of supplying three-phase electrical wiring, and consider installing a 13 kW instantaneous water heater. More powerful appliances, can be designed to connect several taps.

Water heater control

The control system can be hydraulic or electronic.

1. Hydraulic system.

It is used in the most simple and inexpensive models. When the user opens the water tap, the first (initial) degree of heating is switched on. When the pressure increases, the heater switches to the second stage. When water stops flowing, the stem moves the valve to the closed position. The disadvantage of such a control system is that with a weak pressure of water, the device may not start working at all.

2. Electronic system.

Used in expensive and powerful models. The operation of the heater is electronically controlled. The water leaving the tap has a strictly specified temperature, regardless of the pressure of the water. The user sets only its desired temperature. The most advanced models can not only maintain the temperature specified in the settings, but are also able to regulate the water pressure.

Focusing on these basic parameters, you can really buy yourself quality water heater and use it with maximum comfort very long time.

Installation of instantaneous electric water heater

The instantaneous electric water heater should be placed so that it does not interfere during operation, and splashes do not reach the body of the product. If the purchased model is connected directly to the outlet of the pipeline, stock up on a tee and shutoff valves.

The order of installation measures is carried out in the following sequence:

Connecting the electrical cable to the connection point, do not forget about safety, provide the shield with an additional machine;

Direct mounting of the product to the wall. In some cases, the kit includes an installation template (depending on the model);

We shut off the water in the pipeline, we connect it with the help of pre-purchased spurs, fittings and valves;

We gradually supply cold water and increase the pressure, look at flow heater- it must be free of any leaks;

We turn on the network and control the performance of heating heating elements.

Professionals advise, at the inlet to the instantaneous electric water heater, to additionally mount a delay filter various kinds debris formed in the pipeline as a result of rust or incoming grains of sand. Protection against small specks will help keep the device running for a long time without unnecessary breakdowns. heating market specialists

A well-known blogger in a video review will tell you how to mount everything correctly and without errors:

Flow and storage water heaters. What to choose?

Hard to imagine without hot water comfortable conditions residence. There are many types of water heaters on the market today. In addition to differences in consumed resources (gas or electricity), they are divided into flow and storage. By the name it is already clear that some heat the water immediately, others accumulate it. It may seem that it is better to choose a flowing one, because you do not need to wait until it heats the water. But is it really so? To answer, you should analyze in detail the principle of operation of water heaters.

Instantaneous water heaters

Usually they are called columns if they run on gas. The principle of heating water is simple: water enters the heat exchanger, heats up with a burner, then goes to the desired tap or mixer. It takes time for hot water to reach the end point. It depends on the distance between the mixer and the water heater. Almost all gas The lower it is, the hotter and slower the water goes. If the pressure is minimal, the column may not start.

Electric instantaneous water heaters consume a lot of electricity, it is highly not recommended to install them on poor wiring. The advantage of individual models geysers in their energy independence. Piezo ignition or batteries are used for operation.

Electric water heaters benefit from the absence of additional elements (chimney) and permits. Instantaneous water heaters have big disadvantage– they cannot be used simultaneously for several mixers. For example, if you open the water in the kitchen, the temperature in the shower will drop.

Storage water heaters

In the common people they are called. As for the differences between gas and electric boilers, they are similar to instantaneous water heaters. The difference is that they consume less electricity. But they also take up more space. But you can use several points at the same time. First you have to wait until the boiler heats up a certain amount of water. But you can set a timer that turns on the water heater at right time. By the way, gas boilers have direct and indirect heating.

The size of the storage water heater depends on the volume of the tank. How more people use hot water, the larger the volume you need to choose. For example, a family of three needs a tank of 50-100 liters. A smaller volume may not be enough, and a larger one will require additional space. One of the advantages of the boiler is the ability to connect to a heated towel rail. Then it will work even in summer time when heating is not being used.

Conclusion

When choosing an instantaneous water heater, you should pay attention to the principle of its operation and the amount of water consumed by households. Despite all the advantages of storage devices, sometimes the installation of instantaneous water heaters is more appropriate. Each room has its own conditions, so the choice must be treated wisely.

Today we tried to clarify how to choose an instantaneous water heater with acceptable technical parameters forthe best water supply option during shutdown periods. Now you know which protooptimally matches your needs and desires of the household.

Domestic heating systems flow type they are distinguished by a simple control system and compact dimensions, since they do not require an additional tank for operation. The process of work consists in the circulation of water through a tubular heating element, where it is instantly heated to a certain temperature. Most best way equip the house with an uninterrupted supply warm water- install instantaneous water heaters for the apartment.

Brief specifications

Modern equipment is divided into several types, which involve the use different ways fluid heating:

The heating coil or heating element operates on the basis of electricity;
Work is carried out through the use gas burner;
Functioning occurs thanks to the heat exchanger through which water passes and acquires the desired temperature regime.

The easiest to use are electrical devices- they are very easy to connect, work without problems, but consume a lot of electricity. The average power of such a heater is 3-5 kW.

The most economical are gas, but they require the house to be connected to gas networks and are installed exclusively by specialists with a tolerance category.

VIDEO: How to choose a water heater? Which one is better to buy?

Rules for choosing a flow apparatus

The task of how to choose an instantaneous water heater for an apartment must be approached as responsibly as possible. In order not to make a mistake in the choice, you should answer a few questions.

What energy source will the device work on?

Today, there are two types of energy source: gas or electricity. If the house is heated by a gas boiler, you can generally purchase a double-circuit boiler, which both heats and provides hot water. Both circuits are autonomous and are not interconnected in operation.

In the absence of gas, electric flow-through boilers are chosen, which are installed in the immediate vicinity of the water intake point - on the tap, on or instead of the shower, near the sink as an additional source of hot water, etc. The performance of the device depends on the type installed wires. For example, in old buildings, shields are designed for maximum current supply up to 16A. They can withstand the power of equipment no more than 3.5 kW. Later buildings have shields that can withstand 32-40 A, in this case a powerful device can be used, with a value of up to 8 kW.

Regardless of the quality of the wiring and the year of construction when installed electrical device a separate wire should be additionally routed from the unit to the electric machine.

Type of equipment

There are two types of equipment: non-pressure and pressure. The second option is more suitable for the apartment, which during the installation process is mounted directly on hot and cold water pipes. The device has the ability to provide hot water to several mixers at once.

However, if the purpose of purchasing the device is to seasonally shut off the centralized water supply, you should choose a non-pressure option. Often it has less power and is equipped with additional shower heads. This unit is intended for heating the coolant only in the summer season, in winter it is not able to effectively cope with the work.

Equipment performance

Here, to a greater extent, you need to find out what water consumption is required for domestic purposes, taking into account the incoming and outgoing temperature conditions. It is these parameters that are recorded in the passport of the instantaneous water heater for the apartment.

To calculate, put a container with a known volume under the tap and note one minute. The amount that is accumulated over a given period of time is the main parameter for choosing a device.

The temperature of the incoming water is of fundamental importance. If it is at around 14 ° C and above, the output will be the degrees declared by the manufacturer. The lower the inlet temperature, the cooler it will be, respectively.

Experts recommend purchasing equipment well-known manufacturer. Since dubious products will significantly save investments, however, problems with a quick breakdown of the unit and hard-to-reach parts may arise a little later.

Installation of low-quality equipment in a house or apartment can lead not only to difficulties associated with its operation, but also to a violation of the security of the entire property.

In order to figure out how to choose a tankless water heater for an apartment, you need to correctly assess the upcoming load. For a family of four, you will need a device with a power of 14-16 kW. The volume of water in this case will be 5-8 liters per minute, which is enough for 1-2 points of water intake.

The maximum temperature should be at least 50°C, but keep in mind that in winter it can be 3-5°C lower at the outlet. Since we are talking about domestic use, the power supply must be rated for 220 V, frequency 20-30 Hz. If the house is private or there are regular voltage drops in the network, buy devices with a frequency of 30 Hz. If voltage stabilizers are installed, 20 Hz can be dispensed with.

Do not buy appliances without overheating protection. The IP30 marking is mandatory for protection.

As for probes, it is better to prefer anti-corrosion ones, but some manufacturers have already released a line of steatite ones. Both of them performed equally well in operation.

When the choice is made, be sure to ask the sales assistant for a certificate of quality conformity and do not forget about the warranty period.

Popular brands, models and reviews about them

As already discussed a little earlier, the use of more powerful models is not advisable for an apartment, as with a private house, the situation is different. Therefore, we give examples of less productive units that occupy a leading position in the technical market.

Instantaneous electric water heater for the kitchen Atmor Basic 3.5 kW

3.5 kW and maximum flow liquids - up to 3 l / min. The budget version of the heating system is capable of delivering temperatures up to 40 ° C on one condition, if the liquid at the inlet to the apparatus is not colder than 18 ° C. Estimated cost varies from 1000 to 1500 rubles.

The main complaints of users about frequent shutdowns and "lumbago" cold water when turned on at high power.

Water heater Polaris Vega T 3,5

Power 5.5 kW and productivity - 4.3 liters. Thanks to the universal shape, the appliances can be mounted under a bathtub, a washstand or in a niche. The package includes a faucet and a shower head.

Generally, negative feedback there are very few users, the equipment is called solid, which fully justifies its affordable price - 2000 rubles.

Instantaneous water heater for apartment Cartridge PE-VN-220

It has average cost- up to 2600 rubles. Power does not exceed 5kW, consumption - 5l / min. The device involves the processing of low quality water, therefore it is equipped with an additional protective layer that increases operational terms technology.

Electric instantaneous water heater Electrolux SMARTFIX 2.0 S (3.5 kW)

A very high quality line of equipment equipped with all necessary means protection. Average productivity - 3-4 liters. Power 5.5 kW. Very compact dimensions concise design. They are conveniently placed in niches. The only drawback is the price. On average, such equipment will cost 5,000 rubles.

IN modern models predominantly steatite heating elements are already provided, which, even compared to anti-corrosion ones, prolongs the service life. Maximum temperature 50°. Parameters - 220V, 20-30 Hz. Everything is very high quality.

Instantaneous water heater Thermex System 1000 (wh)

Universal water heaters that are in demand among consumers, but at the same time have a number of complaints. First of all, this concerns the lack of gaskets for the thermostat. Limiting the operating frequency to 25 Hertz, which, if the voltage drops in the network, can affect the operation of the equipment. It is advisable to immediately install a voltage stabilizer and not use the device at full capacity.

In the pros - thermal switches, high-quality regulators and versatility. Most have 3 modes of operation. Price - 5500-6000 rubles.

How to install the device?

First of all, it is necessary to mount the device directly on the wall, and then connect it to common system plumbing.

Next, a power connection is required. Even if the instantaneous water heater has a low power, a separate electrical conduit should still be run for it. This process it is necessary to carry out based on the factor that not every electric meter is able to withstand a large current load.

The diameter of the wiring and the type of automation are selected based on the technical features of the water heater and the meter. It is important to remember that standard socket, through which it is planned to connect the equipment, must have a grounding element.

After that, the device is connected to the water supply directly to the tap or the shower head is replaced, depending on the configuration and type of device.

VIDEO: Instantaneous water heater. Principal connection diagram

Faced with the problem of temporary shutdown of hot water at any time and indefinitely, with the increase in the price of heating water using gas, the idea arises of buying an electric water heater. "Boiler" or electric water heater is represented by 2 types: instantaneous and storage. We will analyze what an instantaneous electric water heater is, what it is for and how it works.

A flow-type electric water heater is a small device that does not accumulate water, but immediately supplies water to the faucet, but in a heated state. The water temperature of 60 degrees immediately enters the tap.

Electric models are in demand because they are easy to install and easy to operate. The device makes life easier and completely removes dependence on the whims of utilities.

The presence of an instantaneous water heater eliminates the need for central heating. Reduced water loss in the pipeline. Save time and money.

Conditions for choosing a water heater

The device for heating water of the flow type of operation is distinguished by technical features:

consumption is needed to heat water a large number electricity. Even the best instantaneous water heaters are not able to reduce the energy cost.

Therefore, an instantaneous water heater is installed in the following conditions:

the need to ensure the constant availability of hot water. Such working conditions arise at public catering enterprises, in mega trade complexes;
the time spent indoors is limited, but there is an urgent need for hot water. For example, summer residents in suburban areas face such a situation;
it is possible to pay electricity costs at a reduced price;
if there is no place to install a storage device.

The life of an instantaneous water heater is lower than that of a storage device. He wins in price.

Varieties of models

Models of instantaneous water heaters differ in design and type of control.

Construction types:

a complex design capable of supplying hot water to several points is a pressure type.

High price. The heater cannot be installed without a plumber. It is necessary to have knowledge with the subtleties in the work of plumbers and electricians in combination. Special tools will be required. Works in tandem with any type of mixer. It is offered for 380 V network, since the heater has a power of 36 kW. Mounted before the mixer.

The design is installed directly on the crane - this is a non-pressure type.

The faucet must be thermostatic. In most of the set is already equipped with a crane. The heater is mounted after the mixer. There are models that are built into the mixer. The power of the instantaneous water heater is 8 kW.

Types of heater by type of setting and control

By type of setting and control can be:

The design with a minimum set of settings is hydraulic.

It is distinguished by a range of functions: start-up, shutdown, several modes that set different water supply temperatures.

The design, in which the work adjustment system is more flexible, is a heater with an electronic control type.

The temperature of the water supply is set, the operation of the heater is adjusted to the pressure of running water, the operation is regulated depending on the supply of electricity power.

The electronic model is more expensive than the hydraulic one, but reliable in operation.

Principle of operation

The design of the heater consists of 4 main parts:

base - body;
integrated system of heating elements;
electronics that monitors the temperature of the water and its pressure;
circuit breakers.

Flowing electrical appliances operate according to a given program:

the electrician monitors the water pressure, it is triggered at the moment cold water enters the housing;
turns on depending on the set heating temperature right amount heating elements;
taking heat from the heating elements, the liquid is heated to the desired temperature;
hot water will already come out in the outlet pipe.

To increase the service life of the heater, in some designs the heating element is closed with a heat exchanger, the liquid does not come into direct contact with the heating element. The heating element is better preserved.

Criteria for choosing an instantaneous water heater

Performance - main indicator when buying a water heater. Think for what purposes the heater will be bought in the apartment. This is important, because in order to wash your hands, 3 l / min will be enough, for dishes you will need already 5 l / min, for a comfortable bath in the shower - 8 l / min. Of course, this affects the amount of electricity consumed.

An important criterion when choosing is the power of an instantaneous water heater. The calculation is made according to the principle: the performance indicator for hot water is multiplied by two. This indicator will tell you what will be the consumption of electricity during the operation of the device. Power is listed in the manual. For example, 3-4 kW will be enough for hands, 7-17 kW for using the shower, and the bathroom will be filled with hot water at a power of 21 kW.

The device with the smallest power is called a small instantaneous water heater. It fully justifies its name and you should not expect more from it. Keep this in mind when you still dare to use it for the shower. Manufacturers set limits for a reason.

Flowing electric heaters have their own additional functions:

protection for heating elements from overheating;
from power surges, the heater is equipped with a fuse;
the deactivator works automatically if there is no water in the tap;
from a sharp supply of water with an increase in pressure, an additional valve is installed;
light indicators notifying about the operating mode of the device;
The filter will help protect the heating element from plaque.

The more additional features a heater has, the higher its price. But you have to pay for quality and a long service life so as not to change to a new instantaneous water heater in the near future. It is important that a complete set of all necessary details when installing: fittings, mixers, tubes, plugs. This will ensure correct installation and perfect operation.

When it seems that you have two devices with the same parameters in front of you, it is better for an apartment to choose a device with a high degree of protection against overheating, against scale, with automatic system off, with water filter.

If there is a choice between an electronic control type and a hydraulic one, then it will seem strange, but the best instantaneous water heater for an apartment will be the first option. It will bring big savings.

Thanks to electronic type control prevents overheating of the device, the device “remembers” the comfortable temperature, which will significantly save energy consumption.

Advantages of installing a flow heater

You can sum up some results and write under the line what can induce you to buy a tankless water heater in an apartment:

fast heating of water;
compactness;
ease of maintenance;
some companies produce a flow heater at a price lower than that of a storage heater.

Cons of installing a flow heater

The knowledge of all the difficulties in the operation of a flow heater will help to make the right choice:

for safety reasons, a powerful cable is required;
leaving water temperature is influenced by its temperature in plumbing system. Especially in winter, the water is heated not to hot, but to a warm state.

You can continue to give more arguments in favor of the flow device.

For example, the complete elimination of dependence on problems with housing and communal services.
The money spent will provide the family with hot water at any time of the day.
Electricity is consumed only when the "hot water" mode is turned on.
The amount of water when bathing is not limited, as, for example, when using a storage heater, where the volume of the tank becomes the limiter.
Some models are installed independently in 30 minutes, without involving a plumber.
Complete safety of the device. There is a mesh filter, which protects against water hammer.
The design will save on the mixer.
The temperature is displayed on the screen, adjustable. This will avoid burns on the body.

Models of heaters on sale

Flow type water heaters are on sale:

for washing hands - achieved maximum efficiency work at the point of use (sink). Heating of water begins at the moment of passage through a design. Reduces heat loss during standby. By optimizing the water flow rate, you can achieve economical fluid consumption.
for a shower - the type of control is electronic, the temperature is displayed, water is saved up to 40% with an aerator.
for the kitchen - with an automatic start and stop system. You don't have to constantly unplug it. Due to the instantaneous heating of the water, heat loss is reduced. The device is compact and does not take up much space.
for the bathroom - will allow you to maintain the aesthetics of the room, it is possible to install a hidden eyeliner. An interesting and stylish appearance of the device will only further decorate the interior of the room. The model with a watering can and a goose crane will cope with all the requirements.

Rating of the best flow heaters

It is important to find a device that would correspond to the best ratio of price and quality of the product.

The best instantaneous water heaters:

Third place. AEG RMC 75

The device features an easy-to-use control knob. On the panel, the indicator of the start of work. Max Power 7.5 kW. The device is protected against overheating. Fairly long service life. Works with unstable water supply.

Second place. CLAGE CEX 9

Simple device control, high power. Used for daily use. The device is designed for 2 power modes: 6.6 kW and 8.8. The amount of warm water will be enough to wash the dishes and bathe in the shower. The device is protected from scale. The device with a long service life, high performance, medium overall dimensions.

First place. ElectroluxNPX 8 FlowActive is a suitable instantaneous water heater for an apartment.

The device is equipped with an intelligent control system. Water reaches 60 degrees when heated. The numbers are shown on the display. There is a knob that helps to manually adjust the temperature. The accessories are made of stainless steel. The temperature can be programmed. Display buttons on the panel.

Instrument installation requirements

Selected comfortable spot in terms of access to the control panel. A place is chosen on the wall near the washstand or shower.
It is not recommended to hang on drywall, but if there is no other option, then the mole mount is used.
Dowels are used for mounting on concrete or brick.
In a room with high humidity install a device with a degree of protection of at least IPX4.
For safety reasons, the connection is made only through the RCD. It matters if not additional function– protection: automatic shutdown.
According to the rules fire safety install a separate circuit breaker on the device.
A copper 3-core cable is used, grounding is done.

The main conclusion on installation: such a device cannot be simply taken and plugged into the network. Prepare a special cable, automatic. All this is due to the large electrical load of the device. This is regarded by buyers as a minus in operation. And so many donate free space to install a storage water heater.

The flow electric heater is becoming more and more in demand. The heater is installed in dachas, in houses outside the city, in apartments.

Today, flow models of water heaters are in great demand among buyers. This is primarily due to their compactness. At the same time, they are not inferior to storage types in terms of performance. It should also be borne in mind that the power consumption of flow modifications is very low. There are quite a few manufacturers on the market.

Recently, the range of instantaneous water heaters has been greatly expanded. They differ in their characteristics and management. You should also take into account a rather serious variation in the price of goods. In order to understand how to choose an instantaneous water heater for an apartment, you should familiarize yourself with the main parameters of the devices in more detail. Additionally, you should know the main components of the model.

How is a water heater installed?

The inlet and outlet pipes are located at the bottom of the device. They may vary in diameter. Above the pipes are filters. Next, a special anode is installed, above which the heating element is located directly. Under the thermostat is special gasket. The mounting plate in the device is installed above the control unit.

Hot water is removed through a heat exchanger. The heating element probe is located near the flow sensor. Additionally, the water heater includes a housing, a power supply unit with a switch and thermal insulation sheets.

Important Device Settings

First of all, for instantaneous water heaters, the power of the device is taken into account. Additionally, the documentation indicates such a parameter as performance. Power supplies, in turn, have their own characteristics. In this case, it is important to note the limiting voltage and frequency of the instantaneous water heater. Pressure sensors in the device can withstand different things.

If we consider two-valve modifications, then the above parameter fluctuates on average around 3 bar. The protection system is most often installed class IP30. This tells the buyer that the power supply of the device is protected, and the model will not have problems with overheating. Another interesting indicator is considered to be maximum temperature. The last thing to note is the dimensions of the device.

How to decide on a purchase?

In order to understand how to choose the right instantaneous water heater for an apartment, it is necessary to assess the load that will be placed on the device. If no more than three people live in the apartment, then the maximum power of the model should be approximately 12 kW. All this will allow the performance parameter to be kept at the level of 3 liters per minute.

The maximum temperature must be at least 50 degrees. Also, the choice of instantaneous water heater for an apartment should be based on the parameters of the power supply. In the device, it is most often set to 220 V, and its frequency can be in the region of 20-30 Hz. If the house has certain problems with power surges, then it is better to select a model for 30 Hz. The protection system should be marked IP 30. It is better to select probes of an anti-corrosion type, because they can last for quite a long time. Heating elements are most often installed shielded type. Recently, however, manufacturers have also begun to produce steatite analogues. In this case, it is rather difficult to give preference to any modification.

If choose a budget option, then it is better to stop at a shielded heating element. In order for the master to easily connect the device to the water supply system, the inlet and outlet pipes must be 2.3 cm in diameter. A good instantaneous water heater will cost around 5 thousand rubles.

Reviews of the models "Electrolux"

Flowing water heaters (electric) for the apartment presented trademark differ in quite high-quality protection systems. According to buyers, the models are absolutely not subject to overheating.

Additionally, it should be borne in mind that their average productivity is at the level of 3 liters per minute. So for large families the models of the presented company fit well, this is confirmed by users.

However, in terms of performance, there are also more modest instantaneous water heaters on the market. Their maximum power is on average 5 kW. They are very compact in size. As for the design, many say that everything is beautiful here, the lines are smooth. A good instantaneous water heater will cost the buyer in the region of 5 thousand rubles.

Advantages of the Electrolux 20T model

This instantaneous water heater for an apartment has good reviews. Many buyers choose it because of its high productivity at the level of 4 liters per minute. This model is suitable for a family of five. The heat exchange zone of the "Electrolux 20T" is very extensive. If we talk about the power supply, then it can withstand the maximum voltage of 230 V.

Thus, if there are certain overloads in the electrical wiring in the house, this device able to withstand them. There are only two modes of operation. If you believe the buyers, then the electricity consumption in this case is 3 W per hour. Many note precisely its frugality. The hot water outlet has a diameter of 2.5 cm. The thermal insulation of the device is installed with a thickness of 2.1 mm. The presented instantaneous water heater for the Electrolux apartment on the market costs about 4500 rubles.

This instantaneous water heater for an apartment is unique, and its power is as much as 12 kW. It uses a steatite heating element. Thanks to this, the performance of the device reaches as much as 4 liters per minute of use. Instantaneous water heater control provided button type. There are three modes in total. The user can set the maximum temperature to 50 degrees.

The power supply is installed quite high quality, and absolutely not afraid of overloads. In this case, its operating frequency parameter is at the level of 25 Hz. The unit has a thermal switch. The heat exchange zone is quite extensive, and the thickness of its thermal insulation is as much as 1.5 mm. Under the thermostat, a protective gasket is provided by the manufacturer. Separately, it should also be noted the reduced noise level of this model. This was largely achieved through the installation of a high-quality casing.

According to buyers, during operation, the instantaneous water heater makes practically no sounds. There is also no vibration. The installation of "Electrolux 35S" is more than simple. The pipes in the lower part are standard, and are suitable for the plumbing system at home. Fastening to plastic outlets is permitted. This instantaneous water heater in the store costs about 5100 rubles.

Water heater "Electrolux 30S"

If you believe the buyers, then the "Electrolux 30S" is the best instantaneous water heater for an apartment from budget models. Its heating element is of a shielded type. Its length is exactly 7 cm. The mounting plate in this case is located above the control unit. Due to this, manufacturers managed to significantly expand the heat exchange zone. It should also be noted that the performance of the model is quite good.

According to users, it suits well for a family of four. The maximum temperature on the panel can be selected 50 degrees. The power supply is programmed to switch two modes. This instantaneous water heater for an apartment costs around 4 thousand rubles.

Consumer opinion about Termex devices

For many models of the presented brand, thermostat gaskets are not installed. According to consumers, given element can wear out quickly, and this should be taken into account. Speaking about the benefits, it is important to note high power devices. However, its operating frequency parameter does not exceed 25 Hz. Mounting plates in instantaneous water heaters are installed the most common, and they withstand medium loads.

The blocks have thermal switches. Also, buyers note fairly high-quality regulators. In general, the models of this brand are distinguished by their versatility, and they have quite a few modes. Due to this, instantaneous water heaters can be safely called universal. cost good model on the market in the region of 6 thousand rubles.

Features of the water heater "Termeks S600"

This instantaneous storage water heater for an apartment is valued by many buyers for its versatility. As mentioned earlier, the presented company's devices have many different modes, and this instance is no exception. The user can select a maximum temperature of 50 degrees. The nozzles in this instantaneous water heater are provided in a standard size.

However, before buying, please note that plastic pipes it is better not to mount the device. This is due to the fact that the latches are installed quite rigid. In this case, the wear of the plastic outlets will be inevitable. This was noted by many masters involved in the installation of such equipment. If we talk about the benefits, it also deserves attention reliable system protection. It is installed in this case of type IP 30. Thermal insulation sheets in the device are used with a thickness of exactly 2 mm. The heating unit of the Termex S600 model is copper. This instantaneous water heater for an apartment costs about 5800 rubles.

New model "Termex W200"

Many buyers appreciate this instantaneous water heater for an apartment for its compactness. The performance of the device in this case is at the level of 3 liters per minute. All this became possible thanks to the installation of a shielded heating element. Its total length reaches 7 cm. All fasteners for mounting the model are included in the standard package. The diameter of the nozzle outlet is 2.7 cm. The probe at the thermostat is exactly 6 cm long.

The control unit in this case is a multi-channel type. In total, the device is designed for six different modes. Thus, the performance of "Thermex W200" will vary. When using turbo mode, the power consumption is exactly 3 W per hour of operation. The presented compact instantaneous water heaters for an apartment will cost the buyer in the region of 5700 rubles.

Review "Termeks S350"

If you believe the experts, then this model, among other devices, is distinguished by the presence of a shut-off valve. Due to this, this flow-through water heater for an apartment is able to withstand pressure at a level of 3 bar. It is simple in design, but it will look great in an apartment. The Termex S350 model weighs exactly 5 kg. Of the features, it should be noted first of all a high-quality thermal switch. When the system overheats, it helps quite well.

Additionally, it is important to mention the quality of the control unit. In total, the device can be selected among seven different modes. The "turbo" function is also available, some users consider this a significant advantage. The user is also able to operate the presented instantaneous water heater in an economical mode. The nominal productivity of the device is at the level of 3 liters per minute. For big family this model fits. Of the shortcomings, only the high cost of the goods can be noted. On the market, they ask for about 6100 rubles for it.

What do they say about the Vailant models?

Many models of this brand are equipped with manual switches. They use mesh filters. The outlet valve of the heat exchanger is capable of withstanding a maximum pressure of 4 bar. The casings of the heating elements are used quite dense. Due to this, their noise level does not exceed 45 dB. The protection system for instantaneous water heaters is available in the IP30 series. Thermal insulation sheets for models are used with a thickness of at least 2 mm. Protective gaskets are installed under the thermostats by the manufacturer. If we talk about the shortcomings, then experts mention a rather complicated setup of models. This is due to the fact that the control units have quite a lot of functions.

Probes, as a rule, are mounted precisely anti-corrosion. If the water in the house is used Bad quality, this is a big advantage. However, this element is displayed quite significantly on the price. Heating systems are mainly installed with a length of at least 7.5 cm. The cold water pipe has a diameter of exactly 2.3 cm. There are no flow sensors for water heaters of the presented brand. A good model will cost around 5400 rubles.

Water heater "Vailant VED12"

This instantaneous storage water heater for an apartment has mostly positive reviews. If you believe the buyers, then this model has a quality manual switch. The control unit in this case is a multi-channel sample. The owner is able to use the economy mode. The power consumption of the "Vailant VED12" is a maximum of 2 W per hour.

The performance of the presented instantaneous water heater is at around 3 liters per minute. This model has a mounting plate. According to experts, it is possible to mount the Vailant VED12 instantaneous water heater only on fittings. It has no flow sensors. Also of the shortcomings, a rather small cold water pipe should be noted. Due to this, the user may experience certain problems when installing the device on the wall.

Filters are provided by the manufacturer only with a mesh type. They are installed at the instantaneous water heater under the control unit. The owner is able to set the maximum temperature to 55 garus. Probes in this case are used with a special anti-corrosion coating. The presented flow-through water heater for an apartment costs around 5200 rubles.

Model "Vailant VED24"

If you believe the reviews of the owners, then the specified instantaneous water heater is ideal for a small family.

The probe is installed in an anti-corrosion type. In turn, the heating element is shielded, and its length is 7.2 cm. A protective gasket is installed under the thermostat. Thermal insulation sheets are used with a thickness of 2 mm. The control unit of the presented model has a multi-channel type.

This allows the user to select various modes work. In this case, the manufacturer provides a push-button setting. This instantaneous water heater costs about 5 thousand rubles.

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