Reviews about electric boilers for heating private houses

Tips for choosing an electric boiler

Practical and economical option

Basically, the reliability of an electric boiler is judged by its power.For good single-circuit heating equipment, this figure is 1 kW per 10 m2. Double-circuit boilers must have an increased power value.

When choosing an electric boiler, you need to pay attention to the possibilities of its connection. Not very powerful devices operate from a single-phase network

And boilers with significant power are connected to a three-phase network. Although among them there are models that can be connected in both ways.

From the use of an electric boiler, you can incur much less costs if it is equipped with a security system, an expansion tank, a circulation pump and a programmer. Ionic electric boilers have all this. Also, electricity costs can be reduced by purchasing an electric boiler with nodes that increase the capacity of the equipment during the off-season.

Choosing the best boiler model

Most often, Protherm electric boilers are bought in stores. Under this name, a huge range of devices is produced, which have excellent quality at a relatively low cost.

It is customary to install Protherm boilers in private houses, hanging them on the wall or placing them on the floor. They work stably and are equipped with an easy-to-understand control panel and a user-friendly LCD display. The kit comes with a pump. Models of boilers from this company are compact in size.

Protherm heating appliances are produced with power from 6 to 28 kW. Most of the models are connected to the mains with a voltage of 380 V. If necessary, automatic diagnostics of operation can be carried out on their control panel.

Wall mounted compact model

Another winning option is the Russian-made Evan electric boiler.It functions silently and is considered reliable equipment for heating a private house. The heat exchanger of this appliance is designed so that there is no risk of leakage.

The Evan boiler is equipped with a circulation pump and an expansion tank. The use of this equipment is absolutely safe, as it contains a microprocessor unit. The heating temperature of the boiler can be changed, thereby reducing the cost of electricity.

Connecting the boiler to the heating system

No less famous is the equipment of the Dakon company. German-made electric boilers have a power value of 4 to 60 kW. Included with this heating equipment is a circulation pump. The boiler is equipped with a safety valve, a filter and a water pressure sensor.

An expansion tank is built into several models of boilers. Heating appliances with a power of not more than 12 kW are connected to the network with any voltage.

This boiler is temperature controlled.

Consumption based on the parameters of the house

A visual representation of the heat loss of a private house.

It is possible to more accurately assume the possible power consumption of an electric boiler by knowing the parameters of the house and its heat losses (also measured in kW). To maintain a comfortable temperature, heating equipment must replenish the heat loss of the house. This means that the heat output of the boiler = the heat loss of the house, and since the efficiency of electric boilers is 99% or more, then, roughly, the heat output of the electric boiler is also equal to the consumption of electricity. That is, the heat loss of the house roughly reflects the consumption of the electric boiler.

There are averaged data on the heat loss of houses from various coating materials (houses with a ceiling height of 2.7 m, a standard glazing area, located in the climatic zone of the Moscow region are taken into account). The temperature difference is taken as 26°C (22°C in the house and -4°C outside), this is the average value for the heating season in the Moscow region.

Heat loss of typical residential buildings with an area of ​​100 m2
Coating type and thickness	Average heat loss, kW (per hour)	Peak heat loss at -25°С, kW (per hour)
Frame insulated with mineral wool (150 mm)	3,4	6,3
Foam block D500 (400 mm)	3,7	6,9
House according to SNiP Mos. region	4	7,5
Foam concrete D800 (400 mm)	5,5	10,2
Hollow brick (600 mm)	6	11
Log (220 mm)	6,5	11,9
Beam (150 mm)	6,7	12,1
Frame insulated with mineral wool (50 mm)	9,1	17,3
Reinforced concrete (600 mm)	14	25,5

Varieties of heating boilers

There are three types of boilers that operate using electricity - on heating elements, electrode and induction.

A heating element electric boiler works on the principle of an electric kettle; tubular electric heaters, abbreviated heating elements, are used in it to heat the coolant. The heating process proceeds in flow mode, thus, the coolant circulates in the heating system. The boiler with heating elements is very simple - the sensors control the maintenance of the set temperature in automatic mode.

Changing the degree of heating in such units is carried out by turning on or off several heating elements. The low cost of heating electric boilers has made them very popular, many people use them to heat a private house. The disadvantages of this type include the formation of scale during operation, which affects heat transfer and causes increased power consumption.

Electrode heating boilers use electrodes for heating.An electric current flowing between the electrodes heats the coolant. Such a device has a very high efficiency - more than 90%. The disadvantages or features of this type of electric boilers include the need for preliminary purification of water from mechanical impurities.

If this is not done, the equipment will fail. In addition, it is necessary to control and regulate the electrochemical parameters of water so that the resistivity of the liquid medium meets the standard values.

An induction heating boiler is much easier to operate than an electrode boiler, as it does not contain heating elements. This technology uses a transformer - it heats up the pipeline or core, from which water is heated. In this type of boilers there is practically no scale, there are no leaks. True, their production is more expensive.

Home heating with electricity

Nowadays, heating the house with electricity is becoming more and more popular. Most often, this method is used in places where there is no central gas pipeline.

Despite the fact that electricity is still more expensive than gas, knowing the features of installing equipment for electric heating at home can save a lot.

Let's try to calculate the energy consumption for heating a house of 100 m² using a specific example.

Before starting heating installation

Practice shows that such an alternative source of heating for housing is the future.

Before you start installing such a heating system in the house, you need to decide:

• which method is best for you,
• how much money are you willing to spend on this venture, so that later you can save,
• how powerful the source of electricity is in the building.

It is these factors that should influence the choice of a home heating system.

Practical example

Let's give a practical example of electricity consumption for heating a house of 100 m².

1. The efficiency of an electric boiler is basically 100%. For 1 kW of heat energy, 1.03 kW of electricity is spent.
2. Take for example the electricity tariff for heating a house 4 rubles.
3. The coefficient of heat consumption for heating 10 m² is 1 kW, for this example, 10 kW of heat per 100 m² area.
4. The average daily rate of energy consumption is 1 kW / hour, from which it follows: 10 kW x 24 hours = 240 kW.
5. We take as a basis the uninterrupted operation of the boiler, that is, we consider for a month to the maximum: 240 x 30 = 7200 kW.

These are the maximum calculations, taking into account the constant operation of the boiler, which does not happen in practice. After all, heating the house to a certain point, it turns off and does not work, so energy consumption does not go. Therefore, the resulting value can be safely divided by 2 = 14,400 rubles / month.

Types of boilers

For heating a private house, single-phase and three-phase boilers are most often used. Their choice is a responsible matter, since your electricity costs depend on it.

After the installation of boiler equipment, the load on the power lines increases significantly. Therefore, first of all, you need to contact the company that supplies electricity to your site and find out the maximum current strength.

When calculating kilowatts of energy, take into account the presence of working electrical appliances in the house

Single-phase electric boiler for home heating

The single-phase boiler is powered by 220 V.It is connected without difficulty, because the boiler power is in the range of 6 - 12 kW, so they are most suitable for installation in a house no more than 100 m².

The characteristics of a single-phase boiler are as follows:

• works like any simple electrical appliance;
• a 220V network is required;
• installation without permits.

Three-phase electric boiler for heating a private house.

Such a boiler has more power than a single-phase one, so it can be installed in houses larger than 100 m².

To operate the boiler, a 380 V network is required.

Characteristics of a three-phase boiler:

• power. For 10 m² you need 1 kW + 10-20% (as a reserve);
• operation from three phases 380 V, an increase in the power supply of current in the room is required;
• for installation, you need to take permission from the energy supply in order to increase the power used and install the boiler.

Advantageous indicators of electrode heaters

The operation of an autonomous heat source allows you to manage not only the microclimate and thermoregulation in the house, but also the cost of heat. At the same time, electrode boilers have a number of obvious advantages compared to heating elements and induction devices.

All the water that enters the electric electrode boiler is heated almost instantly and in full. Due to the absence of uncontrolled inertia of heating the coolant in the design, a very high level of efficiency is achieved - up to 98%.

Constant contact of the electrodes with the liquid heat carrier does not lead to the formation of a scale layer. And, accordingly, the rapid failure of the heater. This is due to the fact that in the design of the device there is a constant change of polarity - the alternate movement of ions in different directions at a speed of 50 times per second.

The principle of electrode heating of the liquid makes it possible to reduce the volume of the heat generator by several times compared to heating elements of similar power. The small size and light weight of the equipment are very advantageous features that mark electrode boilers. Reviews from experienced users confirm the convenience of using household appliances, ease of installation and the possibility of their location in any room.

The presence of a digital setting unit on the outer panel of the apparatus allows you to reasonably regulate the intensity of the boiler. Functioning in a given mode helps to save up to 40% of electrical energy in the house.

In the event of a system depressurization or water leakage, you can not be afraid of electric shock. Without a coolant, there will be no current movement, so the boiler simply stops working.

The absence of sound vibrations ensures quiet operation.

The principle of operation of the electrode boiler implies the complete absence of combustion products or other types of waste. It also does not require a supply of fuel resources.

Point 2. Boiler power

Here, as usual in any interesting story, we have two ways - to calculate the power by the area of ​​​​the house and calculate the power by its cubic capacity.

I think it's more correct to count by cubic capacity. Why is that? Because, corny, each owner makes ceilings in his house of different heights.

Someone makes a ceiling of 2.20 m, someone 2.50. And someone makes the height of the ceilings 3 meters. Let's also not forget about lovers of almost half of the house to take under the second light.

The difference, as you can see, is almost 1.5 times. And this is the difference in the power of the electric boiler. which will heat your home.

For a normally insulated house, let's take it for granted that we need 1 kW of boiler heat output for every 25 cubic meters of the internal volume of the premises.

At the same time, it would be nice to lay a reserve of power for windy cold weather. After all, no matter how well we insulate the enclosing structures from the cold, the wind at temperatures below zero will provide additional heat removal from our walls.

Factors that affect consumption?

The basis is power. For household electric boilers, it varies between 12-30 kW. But you need to take into account not only the power, but also the specifics of your electrical network. For example, if your real voltage does not reach 200 volts, then many foreign models of boilers may simply not work. They are designed for a voltage of 220 volts, and a difference of two dozen volts can be critical.

Even at the design stage, you need to take into account many nuances:

• what boiler power do you need;
• Do you plan to install a single-circuit or dual-circuit system;
• what area needs to be heated;
• what is the total volume of coolant in the system;
• what is the magnitude of the current;
• period of operation at maximum power;
• kilowatt-hour price.

The heat loss of the house is also taken into account. They depend on the materials on which the building was built, the availability and quality of insulation, climate, the size of windows and doors, and other things. With this information, you can more accurately calculate how much heating with an electric boiler costs.

Calculation of energy costs

First of all, remember that electric floors will “eat” electricity based on the laying conditions (screed thickness, heat loss, thermal insulation), and not as much as the managers in the store swore to you.

To calculate the cost of electricity, we use the following formula:

S
is the area of ​​your entire room

P
total power of underfloor heating elements

0,4
coefficient that takes into account only the usable area for heating (that which is not occupied by furniture, rugs, other items, plus mandatory indents from the walls

Calculation example

We take the maximum power of the underfloor heating element for a not very well-insulated house 0.2 kW / m2. It's best to know your marginal cost first.

If your house is like a “thermos” and everything is in order with heat losses, then it is not necessary to use powerful thermomats. Take into account the average value of 0.1-0.15 kW / m2.

It is conventionally accepted to use the following capacities for different heated rooms:

living rooms, kitchen, hallway - up to 120W/m2

bathroom – 150W/m2

loggia, balcony — 200W/m2

The total area of ​​the bedroom where the floor will be laid is 20m2. Applying the formula, we get:

That is, per hour, your warm floor will consume 1.6 kW.

Such heating is turned on mainly for 7-10 hours a day. From 17.00 to 24.00 - after coming home from work, before going to bed. And sometimes in the morning from 5.00 to 8.00. But the schedule of work in the presence of special devices, which will be discussed below, you can easily set yourself.

Thus, the consumption per day for 10 hours will be - 16 kW. Total per month use of underfloor heating counter winds - 480kw. It's only in one room.

If electric heating is installed in all rooms, then bills with a consumption of more than 1000 kW per month are a very real picture.

But do not be alarmed, such bills can only come if:

the electric floor works as your main source of heating

you use the maximum power of the elements 0.2 kW and above

no thermostats are used

Classic electric boilers

Next, I have a question, which electric boiler choose for heating houses of 100 square meters - classic heating element or electrode.

What is "classic"? This means that it has a flask in which the heating element heats the coolant. The most common water or antifreeze can act as a coolant.

Such a boiler can be equipped with a circulation pump, a safety group and an expansion tank. And all this can be mounted in one housing.

And it may be additional. And then you just buy a flask with heating elements and a control unit.

A CN, tank and group put on the heating pipeline separately.

Electric boiler power

To begin with, we will determine what power an electric boiler is needed for heating 100 m2 of area. And let's see what area it is.

I’ll tell you right away that on 2 different houses with an area of ​​​​100 squares, with different insulation and with different wall configurations, the heat consumption will be different.

And, as a result, the power of the heat generator in such buildings will need to be selected differently.

How to achieve the normative indicators for the thermal resistance of enclosing structures, and what they are in your region - see the "Heat Engineering" section.

So, for a well-insulated house, 1 kW of boiler per 10 sq.m. is considered the norm. area. But is it right?

Firstly, it is not entirely correct to calculate the power of the boiler depending on the area of ​​\u200b\u200bthe house. Because the heating unit heats the volume of air in the interior, and not the area.

And in rooms with a ceiling height of 3 meters, you will get 300 cubic meters per 100 square meters. meters of area, and with ceilings of 2.5 meters - 250 cubic meters.

Secondly, if you are really well insulated, and the walls, ceiling and floor fit into the new SNiP in terms of heat transfer resistance, then you do not need a 10kW boiler per 100 sq.m. area.

Calculate your heat loss depending on the region in which you live - see the table. And you will understand that the phrase "10 kW per 100 m2" is already rather outdated.

What influences consumption

The results of the calculations inspire fear, but in reality everything is not so scary. The second example shows calculations of the maximum hourly energy consumption during the coldest winter nights. But usually, after all, it is much warmer outside and, accordingly, the temperature delta is much smaller.

It makes sense to carry out calculations, focusing on the average monthly figure, which can be found from the archive reports of weather services. When determining the delta, this figure is substituted for the minimum values.

So it will turn out to find out the average maximum hourly energy consumption in a particular month Qmax. To get the average monthly value, the formula is useful: Q \u003d Qmax / 2 * 24 * x, where Q is the energy spent per month, and x is the number of calendar days. An example of its use is given in the first section of the article.

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When heating with electricity becomes more economical than gas

Assume that the distribution network that feeds a private house with electricity has sufficient reserve. Electricity is converted into heat almost 100%. Therefore, energy can be lost only on the heat loss of the house. It is with the heat loss indicator that all calculations begin. In practice, a block insulated cottage with an area of ​​120 m2 has a heat loss of 8-12 kW.It follows from this that the boiler needs to be bought with the same power plus the energy that will go to heat the water.

And now let's calculate how economical it will be to heat a private house with electricity at a reduced rate and make a comparison with the cost of a gas system. For convenience, we will use one of the ready-made calculators, of which you can find a lot on the Internet.

We proceed from the fact that the heat loss of the house is 8 kW, and the heating season lasts 7 months. The cost of 1 m3 of gas is 0.119 BYN, and the tariff for 1 kW of electricity is 0.0335 BYN.

Screenshot from the cost calculator

As a result, electricity consumption is 23,387 kWh for the heating season, or 783 BYN. This is +/- 111.8 BYN per month. You will use gas for 295 BYN or about 42.1 BYN per month. Plus, in the case of an electric boiler, you need to add the cost of heating the water in the system - this is 4 kW daily or 808 kW for the entire season. It turns out 783+26.8=809.8 BYN per season.

There are ways to reduce the cost of heating with electricity:

1. Installation of automatic power control. You will set a lower temperature, for example, at night or turn the boiler on at minimum power while no one is at home.
2. Warm up the house. So, in modern energy-efficient buildings, heat losses do not exceed 3 kW. In this case, you will spend 183.8 BYN per season.

Comparison of maintenance and connection costs for gas and electric heating

We would not confidently declare that an electric boiler is cheaper than a gas one. Yes, the simplest electric boilers are inexpensive, but their energy consumption is higher, since there is no power control system depending on the desired room temperature.Here you can only set the temperature of the water in the system.

Electric heating connection

In a house for which we considered energy costs, we would choose a medium-class electric boiler Proterm Skat12K kW worth 1560 BYN. You need to buy for it boiler for 800 BYN and a module for connecting to the boiler for 297 BYN. As a result, the amount of 2657 BYN accumulates.

To install an electric boiler, you need to get permission from the power grid. It does not require mandatory maintenance. You will pay a one-time fee of 70-80 BYN for connection and adjustment.

To pay for heating with electricity at a reduced rate, you need to install an additional meter costing from 126 BYN, you need a shield for it, which will cost 70 BYN.

Gas heating connection

We would buy a Bosch 6000 for 1260 BYN, a boiler for 800 BYN and a sensor for it for 110 BYN. It turns out only 2170 BYN.

Additionally, connecting a gas boiler to the gas pipeline pipes will cost approximately 1600 BYN, provided that gas communications are connected to your site. The cost of start-up and adjustment will be about 70-90 BYN, plus calling a specialist to check ventilation costs 40 BYN. Connection to the gas pipeline costs another 100 BYN. And every year the boiler will require maintenance, the cost of which is 50-80 BYN. Here we will include digging trenches for pipes. In total, 2500-3000 BYN is added to the cost of equipment.

There are other nuances in connecting the gas heating system to the mains. Because the section of the gas pipeline can be both state-owned and cooperative. In the latter case, you sometimes have to pay several thousand USD for a "tie-in" into the system.of course, due to the cheapness of gas in the Republic of Belarus, all costs will pay off over time, but it will take not a year or even two.

Popular Models

Next, we will consider the most popular electric boilers for a private house, in demand among buyers. These are models from foreign and domestic manufacturers with good technical characteristics.

Protherm Skat 9 KR 13

Before us is a fairly powerful electric boiler, on the basis of which you can build a heating system in a private house. It works from two types of networks - single-phase and three-phase. The power of the unit is 9 kW, the efficiency is 99.5%. The boiler is made in a wall-mounted form factor and comes with a built-in piping - there is a circulation pump and an expansion tank with a volume of 7 liters on board. The maximum pressure in the circuit is up to 3 bar, the coolant temperature is from +30 to +85 degrees. Additional features and functions:

• Connection of warm floors - in addition to the main heating;
• Built-in protection systems;
• Self-diagnosis.

If you decide to use an electric boiler in the heating system, feel free to purchase the presented model.

EVAN EPO 2.5

If you need the simplest electric boiler without additional features and any frills, pay attention to this model. The device is the simplest electric boiler, made in a flask-shaped case and equipped with a simple heating element. Its power is 2.62 kW, the maximum heated area is up to 25 square meters.

m. To control the temperature, it provides a simple thermostat. Installation method - outdoor. There are no additional features on board.

Its power is 2.62 kW, the maximum heated area is up to 25 square meters. m.To control the temperature, it has a simple thermostat. Installation method - outdoor. There are no additional features on board.

The main advantage of the model is its affordable price, which is about 5 thousand rubles (may vary within small limits).

EVAN WARMOS-RX 9.45 220

Before us is the best electric boiler according to users. Heating of a private house electric boiler EVAN WARMOS-RX 9.45 220 will be very simple - the device is equipped with an advanced electronic control system. Its power is 9.45 kilowatts, the heated area is up to 95 square meters. m. To ensure efficiency, increased service life and reduce the load on the power grid, the unit is equipped with multi-stage power control (5 steps). Inside there is a circulation pump. If necessary, external heating control systems are connected to this electric boiler.

The best heating electric boilers for 380 V

This category presents electric boilers that are suitable for home heating. As a rule, such equipment is offered in advanced equipment. For the operation of powerful heating devices, a three-phase power supply of 380 V is used.

1. ZOTA 12 Lux 12 kW single circuit

This wall-mounted boiler is suitable for a country house with a total area of ​​heated premises up to 120 sq. m. The power of the heating elements is regulated stepwise in the range from 4 to 12 kW. It is possible to connect serial radiators or underfloor heating systems.In addition to the room thermostat, you can connect an outdoor sensor to fine-tune the operation of the equipment in automatic mode. The boiler performs its functions at a pressure in the circuit up to 6 bar.

Pros:

• best reviews;
• advanced equipment;
• the presence of a built-in chronothermostat;
• it is possible to control the pump;
• the ability to set individual settings;
• accurate maintenance of the set operating parameters, taking into account real temperature data;
• compactness (29 x 73 x 16 cm).

2. Protherm Skat RAY 12 KE /14 12 kW single circuit

Pros:

• reliable single-circuit electric boiler with excellent consumer characteristics;
• impeccable build quality;
• ease of installation (from reviews);
• built-in diagnostic system;
• intuitive control;
• elegant appearance;
• the presence of voltage increase control
• minimum noise level.

3. Savitr Premium Plus 22 22.5 kW double circuit

The most powerful electric boiler in the ranking ensures the efficient functioning of heating and hot water systems. In the maximum power mode, it is used to maintain the set air temperature in rooms up to 220 sq. m. To compensate for the expansion of the coolant, the double-circuit boiler is equipped with a large tank of 12 liters.

Pros:

• the best double-circuit electric boiler according to reviews;
• connection of warm floors;
• can be used to prepare hot water;
• programming of operating modes;
• memorization of settings even when turned off;
• automatic rotation of heating elements is supported;
• stainless steel heating element;
• outdoor temperature sensor.

Minuses:

high price.

What you need to know before installing heating

The power of the line brought from the power line is limited.According to Decree No. 334 of the Government of the Russian Federation, which entered into force in April 2009, power grids are required to allocate 15 kW per household. At first glance, a lot: on average, an electric boiler of this power can heat a house up to 150 square meters. m.

But after all, there are other energy-intensive receivers in the dwelling and on the site: a boiler, a washing machine and a dishwasher, an oven, a microwave oven, equipment in the workshop, etc. It is necessary to assess the level of consumption and calculate how much is left for heating.

If you apply with an application to Rostekhnadzor, the limit may be raised. But in some regions, the state of networks does not allow this. There is a solution, but it can be expensive: sometimes a homeowner has to pay to replace a transformer at a substation in order to connect a powerful heater.

Rules for choosing electric boilers

Among the huge range of equipment presented on the domestic market, it is not easy to determine which electric boiler to choose for the home - it must be suitable in all respects for the heating system that it was decided to use for space heating.

When buying, pay attention to a number of the most important characteristics:

Appliance power . When calculating this indicator, when choosing an electric boiler for heating, it is necessary to know exactly the area of ​​\u200b\u200bthe building. To heat 10 "squares" of a room with a three-meter ceiling height, 1 kW of electricity will be required. Based on this norm, it is not difficult to calculate the power of an electric boiler. Add 10% to the result. For example, to heat a house with a heated area of ​​​​100 "squares", an electric boiler with a capacity of 11 kW will be enough.

Profitability of the device . Since its work is based on the conversion of electricity into heat, the selection of an electric boiler should be done taking into account the efficiency of the equipment. It is necessary that the power of the device can be adjusted depending on the temperature outside. In case of warming, such a boiler will consume much less electricity.

Experts advise before choosing an electric boiler, pay attention to the presence of a thermostat or the ability to connect it to the device, due to which the adjustment of the operation of the equipment and the heating of the coolant is carried out automatically

Connection method . Modern types of electric boilers are produced with single-phase and three-phase power. To connect a three-phase device, you need an automatic machine that is designed to protect the electrical network from overvoltage. Therefore, before buying a boiler of a particular model, you need to take into account the features of the power supply at home.

Instrument package . It can be completely different. It is advisable to choose an electric boiler for home heating with a complete list of auxiliary devices. Of course, a complete set is more expensive, but it will be easier to install and operate it.

The package of the electric boiler must include:

• circulation pump (in more detail: “How to choose a circulation pump for heating: first acquaintance“);
• expansion tank (read: “The correct calculation of the expansion tank for the heating system is comfort in your home“);
• programmer.

Protective elements are used as additional devices. Some of them are required to prevent freezing of water inside the boiler. Others eliminate low coolant pressure.Some models have special filters for cleaning, two operating modes - winter and summer

Such electric boilers should be chosen when they are planned to be installed in year-round homes (read: “Important to know: how to choose an electric heating boiler”)

Design features of the device

Experts, advising how to choose an electric boiler, pay attention that the body of the device must be completely closed (see photo)

This requirement is especially relevant for families with children growing up. For small rooms, the best choice is flat models.

Also, the electric boiler requires a voltage stabilizer, which, when the light is suddenly turned off, prevents the device from breaking. If the emergency shutdown is not uncommon and lasts a long time, the house may cool down. To prevent undesirable situations, a battery and an invector should be available.

In inexpensive electric boilers, boilers, manufacturers replace metal components with plastic products. But during operation, they quickly become unusable and require replacement.

Manufacturer company . Electric boilers on the market are divided into 2 groups: foreign or domestic production. How to choose an electric boiler for the home, and which model should be preferred in this case? It all depends on the size of the building. In large houses with several floors, a heating system with a large volume of water is required for a heating device, and therefore the choice should be made in favor of a domestic manufacturer.

European products will be a great option for apartments because they:

• consume less electricity;
• have clear management;
• have high efficiency.

Flow calculation

What is the electricity consumption of an electric boiler, you can find out if you take into account the generally accepted rules:

1. Firstly, in order to heat one cubic meter with a heat generator, you need (take the average value) 4-8 W / h of electrical energy consumption. The exact figure depends on the results of calculating the heat losses of the entire building and the specific value during the heating period. Calculations are made using an indicator that takes into account additional heat losses through parts of the walls of the building, through pipelines that run in rooms without heating.
2. Secondly, when calculating how much electricity an electric boiler consumes, they use the duration of seasonal heating (seven calendar months).
3. Thirdly, if you want to know the average power indicator, use the following position. To provide heat for an area of ​​10 m² with structures with excellent insulation, up to three meters in height, 1 kW is enough. It turns out, for example, for heating an area of ​​​​180 m², the power of the unit of 18 kW will be quite enough. Be aware that if the boiler is selected with insufficient power characteristics, then a favorable microclimate cannot be achieved. If the power of the boiler is too much for a given room, then there will be an overexpenditure of energy.
4. In order to find out how much electricity an electric boiler consumes per month, serving an average building, you will need to multiply the power of the unit by the number of hours of its operation per day (continuous work).
5. The received data is divided into two. At the same time, it should be remembered that a constant maximum load is not typical for the boiler for all seven months (i.e., the time of thaws, lowering the heating temperature at night, etc. are excluded).Thus, we get a result showing how much an electric heating boiler consumes per month. This is an average indicator of the amount of energy.
6. If we multiply this figure by the time of seasonal heating, i.e. seven months, you get the total electricity consumption per year of heating.

Given the price per unit of power, the total needs for heating the house are calculated.

The formula for heat engineering calculation of power W = S x W ud /10 W ud /10 - specific power per 10 m²; S is the area of ​​the heating space, m².