Economical electric boilers for a private home. Electric boilers for heating systems: high efficiency and comfort

The climate control company Termomir offers a wide range of electric boilers different power. Read the information or call our consultants to choose the right boiler model.

Electric boilers are designed for heating private house, dacha, apartment (including for apartment heating), various administrative, commercial and industrial facilities ranging from 30 to several thousand square meters. m. Electric heating is optimal where there is no main gas or where there are strict requirements for the environmental friendliness of heating devices. Also, an electric boiler is often used as a backup heating option in case of problems with the main boiler, for example, a gas one.

An electric heating boiler consists of a heat exchanger, a block of heating elements, a control unit and control and safety devices. Some electric boilers are equipped with a circulation pump, expansion tank, safety valve and filter. The coolant heated by electricity circulates through a system of pipes and radiators, providing space heating, as well as heating water in the boiler. An electric double-circuit boiler is used for heating and hot water supply, a single-circuit boiler is used only for heating a house, as well as for heated floors.

pros:
Compared to boilers using other types of fuel, electric boilers are cheaper, more compact, safe and silent. Connecting electric boilers is much simpler and less expensive than other types of boilers. Due to their compact size and light weight, electric boilers are wall-mounted, do not require a separate boiler room, and installation is allowed in utility or utility rooms, storerooms, kitchens, basements, and even in living rooms.
Electric boilers are easy to use and do not create harmful emissions and foreign odors, do not require constant maintenance, expensive cleaning and regular fuel purchases.

Minuses:
Dependence on stable availability of electricity and high demands on quality and reliability electrical wiring. You should also take into account the fairly high cost of electricity. To make an informed decision about purchasing an electric boiler, it is recommended to make a preliminary calculation of electricity costs.

The boiler will be used in the Russian climate on average from September to April inclusive, i.e. only 8, not 12 months a year. In autumn and spring, the boiler will be used to a minimum, in winter - at full power. Thanks to the built-in automation, the boiler will not operate continuously, on average about 8 hours a day, so the approximate energy costs for the year can be calculated using the following formula:

240 days X 8 hours a day X boiler power X cost of 1 kW of electricity

Electric boilers with a power of up to 12 kW are available in single-phase (220 V power) and three-phase (380 V power), and boilers with a power of more than 12 kW are only three-phase. Most electric boilers with a power of more than 6 kW allow multi-stage power adjustment.

Various remote programmers that can maintain the room temperature according to a user-specified schedule help save energy without sacrificing comfort.

To select an electric boiler, you need to find out the power of the device. Basic calculation – 1 kW of boiler power is enough to heat 10 m2 of a well-insulated room with a ceiling height of up to 3 m.
For selection specific model electric boiler, you can contact the consultants of the Termomir company. Remember that in addition to the boiler itself, it is necessary to purchase other elements of a complete heating and water supply system (radiators, pipes, pumps, thermostats, boiler and much more), so it is better to entrust the selection of equipment and its complete set to professionals.

Currently, our company’s product range includes both the best electric boilers from European manufacturers and good inexpensive Russian electric boilers.

See also:

When installing a heating system in a house, owners are guided by a number of factors. This includes the availability of communications, the price for the heat source, the climatic conditions of the region, the safety of operation, etc. At the same time, it is important to remember about efficiency so as not to throw money down the drain during the cold season. It should be noted that even the most economical boiler will not save the owners if the house is poorly insulated and the heating system is poorly designed. When choosing a heating device, the price of the boiler often becomes the main factor. But immediate benefits can result in serious expenses for gas or electricity. Provide a modern home with heat and hot water Gas and electric boilers are capable of autonomous operation. How to choose the most economical option?

• In populated areas where there is a gas main, it is economically feasible to purchase gas boilers. At the first stage of purchase and connection, home owners will have to face serious investments. The boiler itself will cost a tidy sum, but most of the time, nerves and money will have to be spent on designing and supplying a gas pipeline to the house. Additional funds will be needed to create effective ventilation, organize space in the boiler room according to regulatory documents. Frequent uninvited guests will be gas workers and firefighters. But in the future you will be able to save a lot when heating your home in heating season.
• Not everywhere near the house there is a gas main. In this case you have to choose alternative sources heat. One of the simplest and safest ways to heat a house is to use electric boilers. Since electricity is available in most populated areas, the homeowner will only have to choose a device with optimal power and efficiency.

When calculating, you should use a simple formula. It is generally accepted that 10 square meters are needed for heating. m of a house with a height of 3 m requires 1 kW of energy. Therefore, for country houses with an area of ​​up to 100 sq. m. an electric boiler with a maximum power of 10 kW is suitable. It’s better to have a small reserve of a few kilowatts, but you shouldn’t get too carried away either. Due to frequent switching on and off of the boiler, not only will the load on the heating elements increase, but also the electricity consumption will increase. To roughly calculate how much heating with electricity will cost, you should determine the average daily operating mode of the boiler. To do this, the power of the device is multiplied by the number of hours continuous operation and divided by 2. We multiply this figure by 30 days, and then by the number of months of the heating season. All that remains is to find out the electricity tariff and multiply by the resulting consumption. The percentage of error depends on the vagaries of the weather, but usually it does not exceed 20% of the calculated value.

Our review includes the most economical gas and electric boilers. The rating was compiled based on an analysis of technical characteristics and taking into account reviews of compatriot homeowners.

The most economical gas boilers

Gas boilers are widely used in heating systems of private homes, shops, auto repair shops, etc. They allow heating large areas while simultaneously providing people with hot water.

5 Lemax Premium-10

The best single-circuit boiler
Country Russia
Average price: RUB 16,510.
Rating (2019): 4.0

Domestic gas boilers successfully compete in the domestic market thanks to affordable price and efficiency. A striking example is the Lemax Premium-10 model. This single-circuit device is designed for heating houses up to 100 square meters. m. The manufacturer managed to achieve high efficiency (90%), which allowed to reduce consumption natural gas up to 0.6 cu.m. m per hour. The use of high-quality steel with an anti-corrosion heat-resistant coating helped reduce the cost of the device.

A distinctive feature of the boiler is its energy independence from the electrical network, which provides another saving point. An Italian gas burner device helps optimize the operation of the boiler. Domestic consumers note such advantages of Premium-10 as availability, efficiency, compactness, safety and reliability. To ensure that the device does not fail in the frosty winter, it is necessary to perform timely maintenance.

4 Buderus Logamax U072-24

Copper heat exchanger. Ease of operation and maintenance
A country: Germany (manufactured in Turkey)
Average price: 28,800 rub.
Rating (2019): 4.2

Traditional boilers are not as economical as condensing boilers, but they are much more affordable. And if the device was developed by German engineers Buderus and Bosch, then there is no doubt about its effectiveness. Thanks to compact size 40x30x70 cm, a closed combustion chamber and minimal noise (38 dBA), the unit can be installed directly in the kitchen, and it is capable of heating an area from 70 to 240 sq. m. m.

The heat exchanger in U072-24 is made of copper. With the same power indicators as cast iron and steel models, copper boilers are considered more economical, since they provide accelerated transfer of the heat of combustion of the fuel to the coolant circulating through the pipes. Other advantages of the product are a built-in 3-speed circulation pump, reliable electronic control and simple Maintenance. There is also a minus - some owners complain that the autodiagnostic system displays the same error, which sometimes requires reflashing the board to eliminate it.

3 NAVIEN GA 35KN

The most economical powerful boiler
Country: South Korea
Average price: RUB 37,050.
Rating (2019): 4.7

The NAVIEN GA 35KN gas boiler allows you to heat large houses, offices and shops at minimal cost. This double-circuit convection type model is capable of heating a building up to 350 square meters. m., providing people with heat and hot water. U floor-standing device fairly high efficiency (91.4%), which allows minimizing natural gas consumption to 3.34 cubic meters. m per hour. The heating device can also operate from liquefied gas, the boiler requires a connection to a single-phase power supply. The consumer can also save on the purchase of the boiler itself, since the model compares favorably in price with its competitors.

Owners of cottages, shops, auto repair shops note such positive characteristics gas boiler NAVIEN GA 35KN, as efficiency, availability, high quality. Among the minuses, it is worth highlighting the noise, the need to use only original spare parts.

2 Vaillant ecoTEC plus VU INT IV 306/5-5

Actual annual savings of 20%. Modulating burner
Country: Germany
Average price: 92,650 rub.
Rating (2019): 4.7

Vailant is one of the best European manufacturers of high-tech products for heating and cooling residential buildings. Its assortment includes many reliable and quality models boilers, which includes the wall-mounted unit of the latest generation ecoTEC plus VU INT IV. Users speak about it exclusively in a positive way, noting that installing a boiler in their homes has led to at least 20% savings on operating costs. They consider the layout of the heating system with this boiler and warm floors– it is in this version that it pays off as quickly as possible.

One of the factors for economical operation of the boiler is the use of a modulating burner. Its implementation in the design ensures smooth adjustment of the operating power in a wide range from 16 to 100%, depending on the heat demand. By keeping the frequency of on and off cycles to a minimum, longer maintenance-free and total term unit services. Its only drawback is its high cost.

1 BAXI Duo-tec Compact 1.24

High efficiency. Weather-compensated automation
Country: Italy
Average price: 52,750 rub.
Rating (2019): 4.9

The most noticeable gas savings come from condensing units that are capable of removing thermal energy from flue gases, irretrievably lost in convection-type devices. The boilers of the Duo-tec Compact line are no exception, the efficiency of which, according to some sellers, reaches 107.6% at a load of up to 30%. And although they exaggerate (based on the technical characteristics, the boiler gives up to 91.2%), you will agree that this figure is very good for gas equipment.

The device becomes even more economical due to its design. A serpentine heat exchanger made of stainless steel, an adaptive combustion and draft control system allow you to minimize the cost of heating a house with an area of ​​100 to 240 square meters. m. It is worth noting the presence of built-in automation for changing the temperature of the coolant depending on the weather outside. Thus, maintaining a stable micro-mode is inexpensive in terms of time and effort, which is also an indirect indicator of efficiency.

The most economical electric boilers

Electric boilers can be used as a backup or main source of thermal energy. They are used in small buildings, but with the help of electrical appliances, complete automation of the heating system can be achieved.

5 ZOTA 9 Lux

The best ratio of price and functionality. Availability of chronothermostat
Country Russia
Average price: 17,900 rub.
Rating (2019): 4.2

Looking at the cost of this electric boiler, someone may doubt its reliability. However, after studying its characteristics, we did not identify any obvious design flaws. Moreover, in terms of the number of functions it has no equal even among more expensive models. The 9-kilowatt electric boiler, designed to heat 90 sq.m., has whole line“luxury” features: electronic control based on the operation of 5 controllers, protection of the control unit from overvoltage up to 400V, weather-dependent automatic correction of coolant temperature, function for connecting a heated floor, etc.

From the point of view of the efficiency of the heat generator, the function of the chronothermostat is interesting - with its help, the user sets a program at what time the house should be warm, and at what time the microclimate can be made cooler. This thermostat with a timer is very convenient for setting up work on your own. favorable tariff electricity consumption - nightly. To be fair, let us also mention the disadvantages of the device: in particular, users warn about the high cost of replacing failed heating elements, so it is better to start using it by reading the instructions.

4 Protherm Skat 6 KR 13

Intelligent connection of heating elements
Country: Slovakia
Average price: RUB 35,700.
Rating (2019): 4.5

Consumers have had a lot of time to check how reliable the Slovak “Scats” are in real conditions: they have been produced in their homeland since 1992, and in Russia, according to the manufacturer, more than 250 thousand units have already been sold. Negative feedback and we did not find any obvious criticism on the Internet, and even on specialized forums, where there is a rather skeptical attitude towards budget brands, they are in good standing. And it’s not surprising - the wall-mounted heating device, among other advantages, is characterized by simplicity and versatility of installation (there is no need for a 3-phase network, you can connect weather-compensated automation, a hot water storage boiler and organize a cascade heating system).

The developers took a very responsible approach to the issue of model efficiency, ensuring high (99.5%) efficiency and providing for stepwise power switching in 1 kW increments. In this case, the heating elements are switched alternately, and the load on them is distributed evenly. Protective systems from overheating and freezing, as well as pump protection are responsible for the durability of the product - according to technical characteristics, it is at least 10 years.

3 EVAN Warmos-IV-9.45

Restyled model with automatic power mode selection
Country Russia
Average price: 22,000 rub.
Rating (2019): 4.5

Evan JSC turns 23 years old in 2019, and during this time the company has mastered production wide range heating equipment. This means that the entire heating and hot water system, with the exception of pipes and shut-off valves, you can equip it with products. Of particular interest to potential buyers is the updated electric unit of the Warmos-IV series with a power of 9.45 kW, capable of heating a house up to 94.5 square meters. m.

To optimize energy consumption mechanical thermostat replaced with an electronic thermal control system. Now the boiler “itself” determines how many heating elements out of 3 need to be started in order to ensure the specified temperature regime with an accuracy of 1°. If necessary, you can also use manual power limitation. Self-diagnosis functions, an improved control panel with LED indication and the ability to connect remote control modules make the boiler modern, economical and, importantly, accessible to a wide range of consumers.

2 Vaillant eloBLOCK VE 12

The most economical single-circuit boiler
Country: Germany
Average price: 41,200 rub.
Rating (2019): 4.8

The most economical single-circuit boiler in our review was the Vaillant eloBLOCK VE 12 model (99% efficiency). Electrical appliance capable of heating a house up to 120 square meters. m if available three-phase network. In addition to high efficiency, the device boasts an elegant appearance. There is only one button for adjustment; the microprocessor, sensors, sensors, etc. do the rest. Economical energy consumption is achieved through a smooth increase in power, the presence of additional options such as anti-freeze mode, summer operation, and weather-dependent control. The device can be equipped with a remote control, which allows owners to get straight from the cold to a warm home.

Users speak highly of the efficiency of the Vaillant eloBLOCK VE 12 electric boiler, its simplicity and neat appearance. To increase service life, you need to connect a voltage stabilizer.

1 ACV E-Tech S 240

The most economical double-circuit boiler
Country: Belgium
Average price: 277,000 rub.
Rating (2019): 4.9

The most economical double-circuit boiler is the premium model ACV E-Tech S 240 (99% efficiency). Thanks to the high thermal power (28.8 kW), the device can cope with heating big house, providing its residents not only with heat, but also with hot water. Drives this high performance heating device electronics that help minimize electrical energy consumption. The stainless steel heat exchanger also contributes to economical operation. Reduce heat loss hot water A boiler made according to the “tank in a tank” principle helps. Electronic control allows you to increase service life and prevent scale formation by optimizing heating modes.

Owners country houses and cottages are distinguished by such advantages of the ACV E-Tech S 240 electric boiler as efficiency, reliability, versatility and noiselessness. The main disadvantage of the device is its high price.

Preparing for cold weather is not limited to buying warm clothes and shoes. The priority task for every homeowner is to provide quality work heating system. Constant increases in electricity prices and utilities forced to look for new ways to save money. Energy-saving electric boilers are a reasonable solution to this issue. Such a purchase will ensure proper temperature conditions without ruining family budget. Features of choice, types, as well as the basic rules for a successful purchase are discussed in the information in our article.

Operating principle of heating boilers

Such equipment operates on the simple conversion of electrical energy into thermal energy. Only then does the heating of the coolant and direct heating of the premises occur. Of course, in this case certain heat losses occur, so the promises of many manufacturers of 400% efficiency can be regarded at best as a fantasy, and at worst as a deliberate deception of the consumer.

At the same time, economical electric boilers do exist, and their choice is quite wide. They do not require constant supervision like solid fuel ones, and do not depend on gas supplies. Among the advantages are also reasonable power consumption, small dimensions and ease of connection. There is no need to arrange a separate room for it, and stylish design modern models will easily fit into any interior.

connecting an electric boiler to the heating system

Basic heating equipment includes:

• expansion tank in which the coolant is heated;
• a heating element that performs the main function;
• system for monitoring and adjusting heating, as well as other functions available in certain models.

The coolant is usually ordinary water, which is accelerated by a circulation pump through the heating pipes. Thanks to well-thought-out elements of the heating system, you can make the most of all the advantages of such heating, and the correctly chosen boiler model will significantly save energy consumption.

Types of electric boilers

The main indicator that determines the purchase is the type of heating element used. It will provide quick heating without extra costs. Depending on this factor, the following types of boilers can be distinguished.

Boiler with heating element heater

click to enlarge

The coolant is represented by traditional spiral elements. Efficiency and long service life, coupled with an affordable cost, make such models quite popular. This is the simplest heating device, inexpensive and compact. Among the features of use, it is necessary to note the periodic cleaning of heating elements from scale, as well as difficulties when operating on very hard water.

In addition, it is necessary to correctly set the water circulation rate in the system. If the feed is too slow, the boiler can overheat it to the point of boiling, and a strong circulation “current” will make heating ineffective.

When choosing a boiler with such a heating system, it would be useful to pay attention to the overheating protection function. In this case, the equipment will automatically turn off, preventing fire hazards. The protection will also work in the event of a coolant leak, so such a precaution will not be superfluous.

Electrode boilers

click to enlarge

A smart alternative to heating elements. Distinctive ability - heating of the coolant occurs when passing through it electric current. Such a boiler can be used without constant monitoring, because if water leaks from the system, the boiler will simply turn off. This is not only safe, but also very convenient, because even damage to the system will not lead to a situation where the boiler will also need to be replaced. The only drawback of this option is the need to replace the electrodes from time to time.

Induction heating boilers

This type of heating equipment can be called the most progressive and economical. The operating principle is used in now popular induction cookers, when an electromagnetic field provides heating to metal parts. To do this, there is no need to install a separate heating tank; a small coolant receiver is sufficient. A special emitter converts electrical energy into an electromagnetic pulse, due to which the water is heated.

An important nuance: it is necessary to choose models equipped with a safe shutdown system in case of water leakage from the system. A temperature regulator is also required, which will not allow the emitter to overheat and fail.

How to choose an electric boiler for a private home

If the principle of operation is more or less clear, then for a successful purchase you need to know many more nuances. First of all, this concerns the power of the boiler. To do this, manufacturers provide specific tips, including indications of the heated square footage of the premises. In order for efficiency to be greater, this criterion must be “with a margin.”

The purchase of an economical electric heating boiler for a home should also include a reference point to the climatic region, because the comfortable temperature in the house directly depends on the situation outside its walls. Possible heat loss can be corrected by external insulation, as well as by installing good circulation pump.

How to calculate boiler power? There are special formulas for this, but you can use ready-made calculations. The main value, derived experimentally: to heat 1 m² of living space, you need to spend 40 W of electricity. The percentage of heat loss is usually used at a value of 1.5. Last required indicator takes into account the region of residence. For the southern regions, a coefficient from 0.7 to 1.0 is used. The middle region is characterized by a value of 1.5. To the north there are climatic zones with coefficients from 1.5 to 2.0.

Electric boilers for heating a private home must take into account all these criteria. In addition, it is necessary to calculate emergency situation in case of quick replacement of parts. IN winter period we can talk about hours during which it is necessary to fix the breakdown. The efficiency declared by the manufacturer cannot be more than 100%, because the law of conservation of energy in this case works as clearly as possible. Optimal performance is if the electric boiler delivers 95-98%, the remainder of which goes away with inevitable energy losses.

Everything you need to know about “economical” electric boilers is described in this video:

What to pay attention to:

• Some models (with a power of more than 6 kW) must be connected to a 380 V network to operate, and are therefore unsuitable for standard installation.
• It is advisable to buy safe models equipped with an automatic shutdown system under unfavorable conditions.
• Depending on the selected equipment, it is possible to additionally provide hot water supply (double-circuit heating element boilers), as well as organize modern system"warm floor".
• The use of non-freezing liquid as a coolant can only be done if you purchase an induction boiler.
• The use of water of high hardness requires pre-filtration to eliminate rapid elimination heating elements are faulty.

Heating equipment in a private home is an important issue that requires a comprehensive approach. Fortunately, modern materials and equipment will make it possible to create the most effective and safe system. The most important element is the heating boiler. Depending on the type of heating element, power and installation method, there are suitable models similar equipment. Basic information and useful tips Our article will give you information on choosing an electric boiler for a private home.

The use of electric boilers is one of the options for organizing a heating system in the absence of a centralized gas supply. However, all the advantages of electric heat generators - environmental friendliness, safety, no need to build chimneys and storage facilities - are crossed out by the high cost of electricity. Therefore, when choosing an electrical device, one of the main issues is the efficiency of its use of energy.

Let's look at some of the existing methods economical consumption of electricity with electric heating.

Models of highly economical heating elements units

If the user prefers traditional heating elements, then his choice should be on models with multi-stage power control and the ability to install a programmer. Such equipment includes an economical boiler with high efficiency (about 99.4%) made in Poland KOSPEL EKCO.L1z.

This device can be used both for radiator water heating and in underfloor heating systems. In combination with an indirect heating boiler, the installation not only performs a heating function, but also provides residents with hot water for sanitary purposes. Ideal for buildings where it is impossible to install chimneys or where safety precautions prohibit their use. open fire, for example, at gas stations. Units from the KOSPEL EKCO line are suitable for heating rooms for periodic use.

Significant energy savings are achieved thanks to a 6-step power selection. The operating mode of the unit can be controlled in two ways:

• Manually - in this case, the required power or temperature level is selected using the front panel of the device.
• Automatically - in this case, using a programmer on which a room thermometer is installed, different temperature conditions are set for different times of the day. A weekly programmer can be used.

Attention! Energy savings are also ensured by a multi-tariff meter that takes into account operation at night, and a delay function for turning off the circulation pump after turning off the boiler at the command of the temperature sensor.

The cost of an 8 kW device is approximately $900-1000.

Features of using economical electrode units

When deciding which electric boiler is the most economical, consumers are increasingly exploring the possibility of using a less traditional, compared to heating elements, electrode heating apparatus. The efficiency of the electrode unit is shown by the following figures:

• An electrode device with a power of 3 kW used for heating a house with an area of ​​50 m2 consumes 0.5-0.7 kW/hour.
• A new 3-kilowatt heating element unit can heat a room with an area of ​​only 30 m2, while consuming 1.2-1.4 kW/hour.

The same situation is observed when using three-phase installations.

Heating of the coolant in such units occurs due to the ionization process, which consists of the disintegration of the coolant molecule into positively and negatively charged ions. The movement of ions occurs with the release of a significant amount of heat.

The economical operation of electrode devices is achieved due to the following factors:

• The coolant is heated without an intermediary, for example, a heating element, therefore the inertia of this process is much lower than that of heating elements units.
• Application in modern automation devices.
• Smooth start.
• Simplicity of design and use of modern materials in their production.

The cost of a 9-kilowatt Geyser electrode unit manufactured by Galan (Russia) is approximately $500.

An obstacle to the widespread use of electrode boilers is a number of their serious disadvantages:

• The transmission of electric current directly by the coolant significantly increases the risk of electric shock.
• Significant leakage currents make it impossible to use a residual current device (RCD) in combination with such a unit.
• Electrolysis of the coolant leads to a change in its chemical composition and, as a consequence, electrical conductivity. Electrolysis also causes the appearance of electrolysis gases that air the system. Such gases, depending on the chemical composition of the coolant, can be toxic.
• The coolant must be carefully prepared for electrical conductivity.
• This heating equipment requires qualified maintenance.

Therefore, the user must carefully weigh the pros and cons when purchasing an electrode device.

Attention! The efficiency of any type of heating system can be significantly increased by using proper insulation premises and proper organization of the heating system.

The role of automation in ensuring high efficiency of an electric unit

An important role in ensuring high efficiency of an electric heating system is played by right choice control devices. Automation can be mechanical or electronic.

Attention! The effect of using programmable automation is especially noticeable when people are not constantly in the room.

The hardware market is abundant big amount such heating devices. When choosing an electric boiler, an uninitiated user can easily get confused by the varying indicators and technical characteristics.

We will tell you how to choose an electric boiler, when heating with an electric boiler is justified, how to calculate power, and reduce heating bills.

Advantages of electric boilers

• Simple design, minimal heat loss and the highest efficiency rate during the heating season - up to 99.5%.
• No need to install in separate room at home or cottage.
• Electricity, as an energy carrier, does not need to be delivered or stored, which cannot be said about gas or coal.
• Electric heating boilers are safe: if there is a water leak, the electrical circuit will open and the electric boiler will turn off.
• Environmentally friendly, no chimney required, since they do not emit emissions during operation. harmful substances and decomposition products.

In the absence of hot water supply, you can choose a double-circuit heating boiler, which is also used as a heating boiler, which is especially important for a summer house or private house. The consumer will have hot water available around the clock.

TOP 3 best electric boilers for heating

1. Protherm Skat 9 KR 13
2. EVAN EXPERT 9
3. MORA-TOP Electra Comfort 15K

Calculating the power of an electric boiler is the main indicator of choice

Let's deal with the most important characteristics electric boilers Power is the main one, its choice depends not only on the heating area, but also on the presence of an insulating layer and insulation, wall material, quality of other building materials.

Power is provided by a heating element, electrode or inductance coil (depending on the type of boiler). It is defined in kilowatts (kW) and ranges from 2 to 60 kW.

Sales consultants use a fairly simple formula for calculating the power of an electric boiler; the basis is 1 kW of electric boiler power for every 10 square meters. m of premises. Let's say we have a private house area 100 sq. m, to heat such an area we will need an electric boiler of 10 kW.

Consider the heat loss of your home. If the house is not insulated enough, the windows are bad, the power of the electric boiler should be chosen more than that recommended for your area.

The performance of the heating device is taken into account when thermotechnical calculation private home, as well as when calculating the power of hot water supply. This will allow you to choose an average value in order to compensate for the heat loss.

Detailed calculation of electric boiler power

The power for heating a private house, cottage or apartment with an electrical heating appliance is equal to thermal power. To calculate it, follow a few simple rules:

• for heating 1 cu. m of house or cottage will require about 40 W of power;
• 100 W must be added to each window, and another 200 to the door;
• These data are averaged and depend on climatic conditions: residents of the Far Eastern and Siberian regions multiply the final number by 1.5–2, the coefficient in the middle regions of the Russian Federation is 1.2, and the southern regions use a coefficient of 0.7–0.9;
• for a house or cottage, the calculation result is multiplied by another 1.5, which is associated with heat loss due to the structure of the roof and floor surface (especially in the absence of a basement).

Let's give an example for a house in the south of the country with an area of ​​80 square meters. m., with a ceiling height of 3 m, six window openings, one front door. House area – 80 sq.m. m. must be multiplied by 40 W, then multiplied by 3 (ceiling height indicator), add 200 and 600 W (door and windows). We multiply the resulting value by the private house and regional coefficient - 0.7 and 1.5. As a result, we get 10920 W.

Installation Features

Wall-mounted electric boiler for heating low power(for example, the Mini or Economy series) has a single-phase voltage of 220 V. For devices with a voltage of 380 V, a three-phase voltage is required.

For a regular household outlet, you can choose a low-power wall-mounted heater of the Economy or Mini class, which consumes no more than 3.5 kW. The power limit is calculated as follows: 16 A – current strength in home sockets. With an average voltage of 220 V, we obtain the maximum power - 3520 W (220x16).

Although specifications mini or economy boilers up to 12 kW can be connected to a single-phase power line; experts recommend connecting models from 6 kW to a 380 W power line.

Before installing a wall-mounted electric boiler, a cable with a recommended cross-section of 1 mm and a design load of 8 A is drawn from the switchboard. Floor-standing boilers are more productive, owners of houses with large area it is worth choosing this type of boiler.

Types of electric boilers

Depending on the class, purpose and performance, electric heating boilers are:

• floor and wall: the second device is more compact, which does not affect its performance;
• single-phase (220 V) and three-phase (380 V): this indicator depends on the area of ​​the room;
• single-circuit and double-circuit: the first will provide heating for a private house, the second will also provide hot water in the tap;
• Heating elements, induction and electrode.

Boiler heating element

The most common type. The wall-mounted device is a tank in which several heating elements are placed. The choice of this mini-boiler is optimal for an apartment or house, since it is economical due to the multi-stage control mechanism and is easy to maintain. Economy models are the cheapest compared to induction and electrode models. They are also used in conjunction with water heaters. The wall-mounted boiler has manual and automatic modes. Selecting the latter sets the desired temperature at night. A disadvantage of heating element devices is the appearance of scale, which reduces productivity if it is not dealt with.

Often, a wall-mounted mini-boiler has a circulation pump to stimulate the movement of coolant. IN modern models Instead of water, it is permissible to use antifreeze.

Induction boiler

Consists of a small dielectric tube and a ferromagnetic rod. The coolant moves through the tube. The passing electric current heats the rod, which increases the temperature of the coolant. Many people choose such heating devices because they are durable, compact and economical: thanks to the “soft start” function, they consume 2 times less electricity than heating elements. Their weak spot is a complex control unit.

Electrode boiler

The so-called “direct action” unit, since there is no heating element. It heats due to the flow of alternating electric current through the coolant with a frequency of 50 vibrations/second. Heating is carried out due to the rapid movement of water ions. Such an electric boiler is safe, since if the system leaks, it will automatically turn off.

The disadvantages include the increased requirement for water, which must have the required resistance. Periodic replacement of the electrodes is also necessary; they dissolve over time. To avoid the risk of electric shock, heating with an electrode unit is only possible if there is good grounding.

What should you consider when choosing and installing an electric boiler?

To determine which electric boiler is best to choose, you need to consider the following factors:

• the estimated heating area of ​​the house, cottage, apartment;
• type of room;
• weight and dimensions of the device;
• service life;
• efficiency indicator;
• price limit.

Installation method

Depending on the installation method, you can choose:

• electric boiler with bottom position branch pipes (inlet and outlet);
• electric boiler with a lower inlet pipe and an upper outlet pipe.

Wall-mounted mini-boiler

An economy-class wall-mounted mini-boiler will perfectly heat the room if the following nuances are also taken into account when installing it:

• The meter can affect electricity consumption. It is beneficial to choose a multi-tariff electric meter that takes into account the operation of the unit at night.
• A pump shutdown delay program is useful.
• By choosing a built-in circulation pump, you can further increase the efficiency of the equipment by several percent. It increases the speed of water movement in the system, heating a private house or apartment faster.
• The efficiency of an electrical appliance can be increased by using smaller diameter pipes. The water heating time will be reduced, therefore, energy costs will be reduced.
• Equipment performance also depends on the type of control. For a private home, it is beneficial to take an economy-class wall-mounted appliance with an automatic control panel, since automation increases efficiency by 1/4.

But since mechanical control is considered more reliable, mechanically controlled boilers are the most optimal for long-term heating of large areas.

Rating of electric heating boilers - choosing the best company

The most popular manufacturers of electric boilers:

1. Protherm
2. Vaillant
3. Kospel
4. Evberg
5. Dakon

Domestic companies RusNit and EVAN are also popular.

Electric heating boilers - reviews

Alexander (Moscow)

The boiler was recommended by a friend, so I took already proven equipment. It has been working flawlessly for 2 years. I don’t recommend buying without a PROTHERM THERMOLINK S regulator; after installation, my savings became noticeable, and the advantages of this boiler increased.

Advantages: Not big. Fits well into the room

Flaws: Slight noise during operation, which is not always audible

Marina (Rostov on Don)

Heating boiler Protherm Skat 24K

It's a pity that domestic manufacturers don't make such quality! Bought and forgotten!

Advantages: Proterm uses high quality copper heating elements. Soft start system - the electric body does not turn on immediately at maximum power, but with a delay, which extends the service life. High-quality heat exchangers made of stainless steel. Possibility to use not all heating elements for heating. The presence of a built-in circulation pump, while it is practically inaudible.

Flaws: EXPENSIVE! You have to pay for quality. Production in the Czech Republic and Slovakia – hence the price! A voltage stabilizer is required, otherwise you can forget about the warranty.