How to choose a water heater: types, features of choice, best models

If you don’t want to heat water on the stove and wash your face in a basin, it’s time to think about purchasing a boiler. Professional plumbers told us how to choose a water heater that can solve the problem of warm water in an apartment or private home. They come in several types and you need to know their advantages, disadvantages and characteristic features of each type of equipment. A water heater is literally the only option that provides everyone living in the home with hot water every day without any hassle.

How to choose a water heater Source renovationettravaux.fr

Kinds

Equipment for heating water can operate on gas, electricity and is divided among themselves according to various characteristics. Different types of water heaters may have different times and temperatures for heating water, differ in the type of energy source, the way the device is located, and the features of operation and connection.

Cumulative

How to choose an electric storage water heater for your home? This is the most famous type of device that heats water in a tank, inside of which there is a heating element. Cold water is heated as it enters to the desired temperature.

Storage water heaters Source ueni.com

The distinctive features of this type are the use of small capacities and the possibility of connecting several points. The advantage of modifications powered by the network is that they can economically maintain the temperature of heated water, moreover, they do not consume so much electricity and are connected to an ordinary outlet. Gas equipment is used as an energy source for heating water: natural or liquefied gas. The tank size of such devices is at least 50 liters.

Gas and electric

Electric or gas storage water heater, how to choose? The main components of gas and electric appliances are similar, therefore, the selection principles are the same.

Gas and electric water heaters Source vyborok.com

Electric models:

cost less than gas and are safer;
water tank from 10 liters;
There will be no difficulties during installation.

Features of gas water heaters:

equipment is installed only with the permission of gas services and professional plumbers;
the energy source has a low cost, which means it saves the budget;
has great power.

Scheme of a storage gas water heater Source elit-klimat.net
How to choose a boiler? Deciding which water heater is best to install should be based on the needs of the whole family. As for water consumption per person, the need for hot water depends on the size of the family. For large families, it makes no sense to use instantaneous water heaters. The column is suitable for the domestic hot water needs of 1-4 people. Starting from 4 simultaneous residents, the storage unit is more rational to use.

Flow-through

A instantaneous water heater differs significantly from a storage water heater. The advantage of this device is that it very quickly heats running water and supplies it to the shower or kitchen tap. It is a compact unit consisting of a housing, a massive heating element, a pressure switch, shut-off and control valves, a grounding terminal, a switch, and also an inlet and outlet manifold. For their work, i.e. To move water along the route, sufficient pressure is required.

Scheme of instantaneous water heater Source zusakop.tonuzy.ru.net

These products are non-pressure and serve only 1 point and, as a principle, are placed close to it. Pressure pumps, capable of supplying several plumbing fixtures simultaneously due to their enormous power and impressive pressure. Innovative flow-through heating equipment has an elegant appearance and compact configuration.

Advantages of electric flow models:

use of electricity only for water consumption;
small size and easy installation;
no impact of the housing material on performance characteristics;
constant supply;
ease of use and wide range.

Minuses:

dependence of the outlet water temperature on the inlet water temperature;
high energy consumption;
the need for additional wiring.

If the power of the unit starts from 3.5...8.0 kW, then wiring with a power of 220 W is sufficient, and a three-phase line (380 W) must be installed separately when the water heater has a power of 27.0 kW or more

Tips for choosing equipment

It is advisable to install instantaneous heaters for the needs of large families where a large amount of hot water is required. In this case, you should pay attention to the type of wires and the condition of the wiring, which must withstand heavy loads.

Experts recommend installing such devices in houses equipped with electric stoves, otherwise additional cables will be required.

Flow-type units are often equipped according to the intended use: kitchen appliances are equipped with a drain through which water is supplied to the sink, and the shower set is equipped with a hose with a nozzle. We recommend looking at more recommendations for choosing a flow-through water heater model for your shower here.

When purchasing an electric storage water heater, you should correctly calculate your family's needs for hot water. It is worth keeping in mind that taking a shower requires 30 liters, and taking a bath requires 150 liters of liquid.

To this you need to add the water consumption for a kitchen sink, which averages 20 liters. Thus, a family of three requires a unit with a capacity of at least 80 liters of water.

If the real needs of the family are small, it is hardly worth buying a powerful device that consumes a large amount of electricity. If such a unit was nevertheless purchased by mistake, it is possible to partially compensate for the costs by thermally insulating the tank, which will help retain heat for some time.

For a dacha, where water heaters are usually used only for showering or washing, it is possible to limit yourself to a small unit that provides heating of 15-30 liters of water

It is also important to take into account the existing electrical power limits in the electrical network. As a rule, for separate water consumption in the kitchen and bathroom, a device with a power of 12 kW is sufficient. Water heaters with a capacity of 1-4.5 kW are intended for single-phase electrical networks, and for three-phase electrical networks - 6 or more kilowatts.

For hard water, it is better to use a “dry” heating element, which is better protected against scale deposits. Reducing precipitation is facilitated by the use of filtered water in the system, for which an additional filter is installed.

Criterias of choice

The choice of water heater depends on many parameters. The most important criteria that need to be taken into account are presented in the list.

Power

How to choose an electric storage water heater? Power consumption is a parameter on which performance depends. The efficiency of the heating component may vary, but the general principle is true for absolutely all devices - the greater the power, the faster the water heats up.

Determining the power of a water heater Source ruceta.nacypote.ru.net

For instantaneous and storage water heaters, the power ranges are significantly different. Flow-through systems - due to their distinctive features, systems consume more electricity than storage systems. The power of small devices with a water flow rate of up to 3 liters per minute can be from 3 to 5 kW. When taking a shower, we use approximately 7-9 liters of water per minute, and at the stated maximum of 65 degrees, 3 liters will result in slightly warm water. Models with a power of 8 kW are ready to heat up to 6 liters of water in 20 seconds. The most powerful ones require a three-phase connection with a power of 380 volts. As a principle, the threshold for electrical appliances is 30 kW.

Water heater power Source luxpl.com

Cumulative - from 1 to 6 kW. Such devices will heat water up to 40 degrees. Large storage water heaters are often supplied with gas heating systems. Such devices can have the highest power up to 78 kW.

See also: Catalog of companies that specialize in insulating country houses.

Tank size

The first thing you need to decide is the size of the tank. It depends on how many people will use it and what the water heater will be used for. In addition, a very important aspect of the choice is the place of bathing - shower or bathroom. If the device is needed only for washing dishes, then you can choose a 10 or 15 liter modification, which will be absolutely enough. If space allows, for bathing you must choose a water heater of at least 80 liters in size if you have a bathtub and 60 liters for a shower. For example, for a family of four, choose a 60 liter water heater, but in this case you will need to wait until the water heats up after each person bathes.

Water heater tank size Source sanliga.ru

We advise you to focus on the following values:

for the daily needs of one person, 50 liters is enough;
for three people – 80 l.;
4 and more – 120 l.

There are water heaters up to 300 liters in size, but the cost of such modifications is quite high. A more common value is a 100-liter tank, which is purchased both for a private building and for a summer residence.

Inner coating

The anti-corrosion layer is made from components that are resistant to hostile environmental influences, including:

Titanium coating,
Stainless steel,
Fiberglass.

Internal coating of a water heater Source www.dg-dom.ru
Coating directly has a great influence on the formation of cost. Modifications coated with an enamel composition are in high demand among residents, since their working period exceeds 10 years or more, while porcelain glass products work for approximately a year. With sudden temperature spikes exceeding 60, microcracks may appear on the walls.

The best types are rightfully those with a titanium shell, which stand out for their high price. The weak point of expensive modifications is the welded joint zone and the poor impact on the quality of water, which, according to users, acquires a steely taste after contact, although studies have not proven this fact.

The presence of a magnesium anode increases the degree of protection, but it will require periodic replacement, 1-2 times every year.

Pros and cons of using

A water heater is an irreplaceable item. It is necessary for a comfortable existence and saving time. There are many advantages of using:

safe heating without the risk of getting burned;
can be installed in any room;
easy to use;
You don’t have to depend on public utilities.

The disadvantages of water heaters are related to their features. For some it is high energy consumption, for others it takes a long time to heat up.

Important! Sometimes users consider the need to clean the tank and change heating elements as a disadvantage.

But even despite the presence of shortcomings, no one argues that a water heater is needed at home. This simple device allows you to take a shower or wash dishes comfortably at any time.

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The best manufacturers

We have selected companies that are considered leading in the field of water heater manufacturing.

Ariston

Particular attention in the development is paid to the material and protective coating of the tanks inside. The issue of rust is solved by using stainless steel or steel coated with titanium or enamel. In certain modifications, the coating includes silver ions, which disinfect water. For example, this is equipment of the Silver series, abs Silver Power.

Ariston water heaters Source otoplenie-gid.ru

The strength of the storage tank is guaranteed due to reliable welds using Micro Plazma Tig technology - air bubbles are eliminated in the joint areas, which prevents corrosion. The manufacturer offers storage water heaters with tank sizes from 10 to 200 liters; the highest heating temperature for many models is 80 C. Some of them are equipped with a Nanomix mode to ensure performance.

Electro lux

The main difference between the famous Swedish brand is that home equipment produced under this brand is highly valued all over the world and in the domestic market in particular. Corporate style is the constant improvement of our own products, the creation and introduction of the most daring innovations.

Electrolux water heaters Source gazeta.a42.ru

Technological and neat in appearance, the products are made in various versions. Indirect heating boilers from 100 to 1500 l. Electric instantaneous water heaters from the most common and cheap non-pressure ones to ultra-technological and powerful system ones, controlled by high-precision electronics.

Bosch

Many buyers immediately associate this brand with durability and excellent quality.

Bosch water heaters Source kyttemaailm.ee

Types of storage water heaters by type of internal tanks

When choosing a storage water heater, it is important to pay special attention to the material from which the internal tank is made. First of all, it needs protection from corrosion, since it is in constant contact with water. There are three types:

with plastic tanks;
with enameled tanks or glass ceramics;
with titanium tanks or stainless steel.

The first type is considered the most budget option - plastic itself is a cheap material. But such tanks have a short service life, since at high water temperatures they are easily deformed.

Tanks with an enamel coating are used by leading manufacturers in different price categories of this equipment. The main disadvantage is microcracks. They can form during constant operation of the device at high water heating temperatures.

To extend service life, it is best to set the mode to no more than 60 degrees.

It is worth noting that leading manufacturing companies use modern technologies to increase the strength of the tank coating without increasing the cost of their products. For example, the manufacturer of such equipment TIMBERK uses innovative SmartEN technology. This increases mechanical strength even at high temperatures. And the silver and copper ions included in the coating give the inner tank cleansing and antibacterial properties. This technology is used in the TIMBERK SWH FE5 series for 50 and 80 liters.

Water heater Timberk SWH FE6 80H

The most durable water heaters are those with titanium or stainless steel tanks. Their price is higher, but their service life is longer. They are not afraid of high temperatures and corrosion. Such tanks are installed in water heaters from leading manufacturers Termex and Gorenje.

Popular models

All models presented. The best water heaters are in great demand among consumers, have unique design features and are of excellent quality.

For the pool

In order to enjoy the ease of using the pool, its water must be heated, and the optimal temperature for the human body is from 22 to 24 degrees. A pool with a diameter of 3 meters warms up in approximately 2 hours. Today, electrical equipment is especially famous. Inside there is a heating element designed for heating water, covered with several protective layers in order to protect the components from rust.

Each of the models has a pump with a filter, as a result of which the water is not only heated, but also cleaned.

Pahlen

The Swedish manufacturer offers excellent equipment, the power of which reaches 18 kW, this is considered a high indicator and it requires a voltage of 380V. These indicators allow you to heat the water to a temperature of 40 degrees.

Pahlen pool water heater Source poolcorner.de

Operating principle of electric storage water heaters

This type of equipment has a second name - boilers. They are available in various shapes, volumes and differ from each other in the type of installation. But the basic principle of the structure and operation of this type is similar. They are a metal tank with a thermal insulation layer on the inside. A heating element (heating element) and a thermostat (temperature sensor) are installed inside. Water comes into it from the water supply. Such equipment is connected to a regular outlet. When the heating element heats the water to the temperature set by the user, the thermostat will operate and the heating of the water will stop. If you leave the water heater on, it will maintain a certain thermal level of the water.

Video description

In the video, a review and installation of a water heater under the sink in a country kitchen:

For shower

As an example, instantaneous water heater Proffi PH9028. Using the unit is simple and comfortable: it is possible to adjust the temperature, and the selected options are reflected on the LED display. The set includes a shower head. The device is thoroughly protected from rust, it is not afraid of splashes, and its moisture resistance class meets the IPX4 standard. In case of pressure surges in the pipes, a safety valve is taken into account.

Water heater Proffi PH9028 Source yandex.by

For the dacha

The electric water heater is of a bulk type and has a power of 2 kW and a heating rate of 60 minutes. up to 40 degrees.

Tank volume 110 liters. In a suburban area, such a device can significantly simplify life, especially when there is a lack of running water. You simply need to pour water into the tank, heat it and use it for personal needs.

Electric water heater for a summer residence Source homediz.info

For bathroom

Pressure devices are considered the most comfortable and universally suitable. Instantaneous water heaters for showers can be connected either to one point or to a riser. This makes it possible to use hot water not only in the bathroom, but in absolutely the entire home.

Thermex Chief stands out for its unique design and great functionality. Equipped with a completely copper heating element and a flask that provides rapid and uninterrupted heating of water due to high heat transfer. Efficiency 2.9 l/min of water, temperature 35C. It has intuitive electronic controls and a beautiful LCD display with stand.

Thermex Chief water heater Source wildberries.ru

Device Application

A water heater is convenient in an apartment or private house, city or village. Hot water can be turned off at the most inopportune moment. And it is necessary not only for swimming. Without it, it is difficult to wash the dishes and do the cleaning. It is especially bad without it in a house where small children live.

Those who know what a water heater is intended for try to purchase such a device. With its help, cold water is heated to a comfortable temperature. It can be used at any time. Heating occurs via gas or electricity.

Important! If gas water heaters cannot be installed everywhere, then electric ones are more affordable and can even work in the country.

Using the water heater is simple:

The device is plugged in and cold water is passed through it.
The water is heated using a heating element.
After opening the tap, hot water flows out of it.

You can connect one or more water intake points to the water heater, that is, one device supplies the kitchen and bathroom.

Conclusions and advice from professionals

If you still have questions about which water heater to choose, then use the brief advice of professionals.

Low-power instantaneous water heaters are chosen for consuming water in small quantities in the kitchen. They are perfect for washing dishes or washing hands. For families and for those who like to lie in the bathtub and steam, a storage electric heater measuring 100-500 liters is suitable.

A bulk boiler is the only possible solution for those who do not have the opportunity to create at least some semblance of a water supply system on their plot.

Indirect heating water heater Source iobogrev.ru

Indirect heating boilers differ from all other sources of warm water in that this system does not have its own heating component. Heating of water, in this kind of concept, is carried out due to the influence of external heating devices. This could be a boiler, central heating or solar panels. An indirect heating water heater, as a rule, is placed next to the heating boiler, and this “duet” covers a fairly large area, especially if both devices are floor-standing. The design of the indirect heating water heater allows you to connect a heating element.

Is it worth installing a water heater?

Having understood what constant expenses await users of automatic water dispensers, electric boilers and centralized hot water systems, we can already draw some conclusions. So, a cubic meter of water at a comfortable temperature will cost the following amount:

when using a boiler - 105.20 rubles;
with a geyser - 100 rubles;
from TsGVS - 188.53 rubles.

Obviously, if it is possible to install a gas flow, this must be done. It will be economical, convenient, and uninterrupted.

When it comes to electric heaters, there are some unobvious pitfalls. For example, you should remember that the specified amount will only be obtained when the boiler is operating at night. In addition, if you had to use up the entire volume at once, then you will need to wait at least half an hour until the unit prepares at least some more portion of liquid. The next nuance is the need for equipment maintenance: at a minimum, the protective anode must be regularly replaced.

A central network with hot water is very convenient, although expensive. The user can get as much heated liquid as he wants at any time of the day and not have to worry about which part can be spent on taking a bath and which part can be left for the next family member. Of course, there are periods when the resource is turned off for a couple of weeks or even a month. In this case, a small storage unit can come to the rescue. It won’t take up much space, but it will help you “hold out” for a while.

How to choose an electric water heater: we help you decide on the criteria

A planned shutdown of hot water often takes us by surprise. What can we say about an unscheduled shutdown - when it suddenly turns out that there is no hot water at the most inopportune moment (and, as we know, there are no “suitable” moments for such events in principle).

You can insure yourself against such a nuisance by installing an electric water heater. Also, electric heaters are often used if the quality of hot water leaves much to be desired (for example, the water pressure is not satisfactory or, say, someone in the household has developed skin irritation in response to the composition of the water).

And, of course, you can’t do without electric heaters where there is no hot water at all - for example, in a country house where the water source is a well.

Electric water heater Bosch Tronic 1000T ES 100

Let's take a look at the most common types of electric water heaters and decide how to choose the most suitable model depending on the tasks.

Flow heaters and storage heaters (boilers)

The main difference between instantaneous water heaters and storage (boilers) can be identified already from the name itself: an instantaneous heater heats water “in real time” - while it passes through the heating system. Storage - accumulates water, heats it, and then gives it to the consumer as needed.

Structurally, a storage water heater is a sealed tank into which water is automatically supplied from the water supply. Inside the tank there is a heating element (heating element), which brings cold water to the temperature set using the control panel and maintains it at the same level. When water is used up, new water is added in its place from the water supply.

Instantaneous water heaters look much more compact: they are a box with an electric heater hidden under the lid. This heater does not have a special tank for storing water; the water is heated directly as it passes through the heating element. Such water heaters are often used in small apartments where there is no space to place a boiler, or where installing a boiler is impractical.

Pros and cons of each type of heater

Each type of water heater has its own characteristics, pros and cons. Let's name the most important of them.

Boilers

Pros: the boiler does not create an increased load on the electrical network, since its power is on average significantly lower than the power of instantaneous water heaters
a storage heater is capable of “distributing” hot water to the entire apartment (i.e., to several sources of water consumption - several taps)
the heated water will maintain its temperature for some time, and you can use it even if the electricity is suddenly turned off

Minuses:

heating of water does not occur instantly: after consuming a significant part of the heated water (or completely emptying the boiler), you will have to wait from several tens of minutes to 1-2 hours until the water received from the water supply heats up again

the boiler takes up a lot of space and also weighs a lot, so you not only need to allocate space for it, but also require special installation (reliable fastening and a reliable wall)

The heating element of the boiler suffers from scale formation and may require cleaning

Flow heaters

Pros: a flow-through heater will be easier to install and install
it will also not take up much space: it can be installed literally in any room
The water will heat up quickly: just open the tap
the water will not stagnate (it will always be fresh), it will not have to be drained if the heater is not intended to be used for a long time

Minuses:

the temperature of “hot” water turns out to be limited by the power of the device and depends on the temperature of the water in the water supply system - that is, the colder the water at the inlet, the colder it is at the outlet

The power of an instantaneous water heater is quite high, so to connect it in the house you will need not only a dedicated electrical line, but also a certain power reserve

one device is capable of serving only one water supply point; it will not be possible to use the device to supply water to several taps

Main characteristics of storage heaters (boilers)

As we mentioned above, a boiler is convenient if there is a need to store a large amount of hot water. In addition, such a heater will be the only solution in cases where it is not possible to install a flow-through boiler (for example, due to the fact that the electrical wiring cannot cope with the load).

One of the key characteristics of boilers is volume. The second most important thing is power, and, as a result, the time during which the device can heat the water to the set temperature. All these parameters can be found in the technical documentation for the device, so choosing a boiler solely based on appearance is not the best idea.

For one person who uses water sparingly, a 30-liter boiler will be enough. For two people, it is recommended to pay attention to models from 50 liters, for three - from 80 liters, etc.

Thermex ERS 80 H Silverheat 80 liters capacity

Find out the price

A storage boiler does not put a large load on the network, consumes less electricity, and most importantly, does not require a special connection if its power is less than 3 kW. In many cases, it can be plugged into a regular outlet without the hassle of installing a separate electrical line (although, of course, if the installation of the boiler is planned during the renovation phase, it is better to provide for the possibility of a safe connection in advance).

Installing a boiler is also simple: it is necessary to provide grounding, in some cases, a reducer to compensate for increased pressure in the water main, and also install a safety valve to protect the water heater from excess pressure in the tank and to drain the water. Please note that all of these elements will most likely have to be purchased separately. If the boiler is not used for a long time, it is recommended to drain the water from it.

The boiler is designed in such a way that cold water enters through the pipe below, after which it is heated in the heating element to a given temperature and “returned” from above. The temperature of the water coming from the tank appears to be stable. A heater of this type turns off automatically when the water is heated to the desired temperature, and turns on again when it cools.

The thermal insulation of the device plays an important role - it determines how quickly the cooled water will need to be heated.

Modern boilers can be controlled mechanically (this is the simplest solution) or electronically - with the ability to “smartly” regulate heating control, automatically turn on and off, etc.

Storage water heater Ariston Velis PW 50 liters

Find out the price

The longevity of the boiler depends on a number of design features. First of all, this is, of course, the material from which the internal container of the heater is made. The simplest boilers are made of metal, others may have a protective enamel coating. Glass ceramics are also used for protection. The “weak” point of many boilers is the weld seam - this is where leaks often occur. Alas, it is hardly possible to make predictions regarding the reliability of this connection element: when choosing a particular model, you have to be guided by personal experience or reviews of users who have already purchased such a boiler previously.

The boiler heater consists of, in fact, a heating element and a thermostat, which is responsible for temperature control. The heating element can be either open (and in direct contact with water) or closed (protected from contact with water). They are also sometimes called "wet" and "dry".

An open heating element will provide a high rate of water heating, will be affordable, and is also often universal and suitable for different models of boilers. But scale forms on it, and therefore it will require periodic cleaning or replacement.

A closed heating element will provide a longer service life and is safer with regard to the potential danger of electric shock (for example, if the boiler leaks). Such a heating element is placed in a special flask filled with quartz sand or oil. A closed heating element has a longer service life, but also significantly increases the cost of the water heater.

The thermostat allows the boiler to turn on and off automatically. On the front panel you can sometimes see a water heating sensor. It can be electronic or mechanical (in the form of an arrow). This way you can always find out what the temperature of the water inside the boiler is.

An important element of the boiler is the magnesium anode - a metal pin coated with a magnesium alloy. This element protects other parts of the boiler, taking on the main “blow” when dealing with low-quality water - it neutralizes water, absorbing salts and converting plaque into soft scale. Otherwise, scale would settle on the heating element.

Magnesium anode

When using the boiler for more than 15 months, you should remove the anode and check it for wear. After this period of service, the anode is likely to be sufficiently worn out that it should be replaced. Please note that, as a rule, anodes produced for one boiler model are not suitable for another model. A “wet” copper heating element is something like a boiler; it quickly becomes covered with scale, which reduces its thermal conductivity.

Heating element complete with anode

Finally, let us mention the existence of compact non-pressure boilers of small volume (for example, 5 liters). In most cases, such storage water heaters are needed for systems where water is supplied using pumps as they are turned on (for example, in a country house). That is, the water pressure inside the tank does not exceed external atmospheric pressure. Such a boiler is mounted directly under the sink and can easily provide warm water to one point.

Main characteristics of flow heaters

As we have already said, instantaneous electric heaters are much more compact than boilers, but their power will be significantly higher. And therefore, to install them you need to install a separate electrical line, as well as install a separate machine. Well, in many houses and apartments (where there is not a sufficient supply of input power), installing such a heater does not seem at all advisable: in the worst case, it will “knock out plugs”; in the best case, it can only work in the absence of other load (i.e. e. with kettles and other powerful electrical appliances turned off).

Electric instantaneous water heater Eldom Betta 6.5 kW

The operating principle of instantaneous water heaters comes down to washing the heating element with thin jets, which manage to heat up to the required temperature. Electric instantaneous water heaters produce hot water in an unlimited volume and bring it to a hot state almost immediately after turning it on. Real operating experience shows that to provide hot water to no more than two points (for example, a kitchen and a shower), the flow-type option will be the simplest solution (of course, if there is no goal to save on electricity consumption). However, for normal operation, sufficient pressure is required - at least 0.4 atm. For domestic needs in the kitchen, 3-6 kW of power is enough, and for showers and baths it is better to focus on 8-11 kW.

Unlike storage heaters (boilers), which operate from a conventional single-phase electrical network of 220 V and 230 V, many instantaneous water heaters (especially models with a power exceeding 8 kW) allow connection to 220/380 V networks. If possible, it will be more favorable selection of three-phase voltage, in which the load is evenly distributed over three phases.

The main characteristics of flow-through heaters, therefore, are the power and volume of water that the device is capable of heating per unit of time. This parameter is indicated in the documentation and looks like a parameter like “4 liters per minute”. The second important parameter is the maximum water temperature that the device can produce. This parameter is also indicated in the instructions (as a rule, it does not exceed 60 degrees).

Many heaters are equipped with a flow limiter that does not allow too much water to be supplied (so that the device has time to heat the water). But with low pressure, such a limiter may cause the flow sensor that activates heating to fail to operate. Therefore, when purchasing such a device, it would be useful to check whether the water pressure in the water supply system complies with the established standards. An additional pump may need to be installed.

Electric instantaneous water heater Atlantic Ivory IV202 5.5 kW

Finally, let us mention that instantaneous heaters, like boilers, can be equipped with an electronic control system, which significantly increases the comfort of operating the device and allows much more precise adjustment of the operating parameters of the device.

conclusions

In general, choosing an electric heater for your home or cottage is quite easy. The fact is that the choice is largely limited by such parameters as the method of water supply (central water supply or pump), the pressure (pressure) of water in the pipes and the capabilities of the electrical network. Many devices will not automatically fit certain parameters (they will be too powerful or require labor-intensive preparatory work).

It is not surprising that many opt for the simplest solution, which requires a minimum of effort when connecting - installing a conventional storage heater-boiler of a suitable volume. Flow heaters are much less popular (largely due to the increased load on the electrical network). However, in the case where the installation of a heater is planned at the renovation stage, they may be the optimal solution, since they allow you to get hot water immediately, without any preliminary waiting.

Shapes, sizes and type of boiler control

The modern market for the equipment in question provides consumers with a huge selection of different types of electric boilers.

Various volumes - most often they buy models from 10 to 100 liters.
Various shapes: round, flat, square. Round water heaters with a volume of up to 30 liters are very popular; they are usually installed in the kitchen. If you need a larger model for the bathroom, then the flat version will take up less space. It can easily be mounted on a free wall or above the toilet.
Vertical and horizontal. Most often, consumers prefer the first option. Before choosing, you should decide on the installation location. Horizontal models are best installed above a door or other plumbing equipment.
By type of control: mechanical and electronic. The second option has the possibility of more precise settings, setting automatic shutdown or on. Such models are often equipped with a small screen.