Gas boiler up to 100 sq. M. The best electric boiler for home heating according to customer reviews. Gas heating of a private house

The climatic company "Termomir" offers a wide range of electric boilers of various capacities. Read the information or call our consultants to select 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 optimal where there is no main gas or 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, gas.

The electric heating boiler consists of a heat exchanger, a block heating elements, control unit and control and safety devices. Some electric boilers are equipped 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 underfloor heating.

pros:
Compared to boilers using other fuels, electric boilers are cheaper, more compact, safer and quieter. 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, pantries, in the kitchen, in the basement, and even in living rooms.
Electric boilers are easy to operate and do not create harmful emissions and odors, do not require constant maintenance, expensive cleaning and regular purchase of fuel.

Minuses:
Dependence on the stable availability of electricity and high demands on the quality and reliability of electrical wiring. It should also be taken into account that high cost electricity. For an informed decision on the purchase of an electric boiler, it is recommended to make a preliminary calculation of the cost of electricity.

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

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

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

To save energy without sacrificing comfort, various remote programmers that can maintain the temperature in the room according to a user-defined schedule help.

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 Thermomir 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, a boiler and much more), so it is better to entrust the selection of equipment and its complete set to professionals.

At the moment, the assortment of our company includes both the best electric boilers from European manufacturers, and good inexpensive Russian electric boilers.

See also:

Which boiler is suitable for a house 100 km.m.

According to GOST, in a perfectly insulated house, heat losses are 10-12 kW, and it is recommended to choose a boiler with a capacity of at least 11 kW. But this is in the event that we have qualitatively insulated the roof, walls, foundation, windows, doors, as well as the gas pressure in the gas pipeline of at least 1.5 bar. Therefore, for heating a private house with a total area of ​​100 sq.m, I recommend choosing a gas boiler with a capacity of 14 kilowatts or more. Why the power of a gas boiler must be at least 14 kW:

• A power reserve of 30% is needed so that the boiler does not work for wear at the limit of its capabilities.
• It is necessary to take into account heat leakage through the walls, roof, windows, foundation.
• In private homes, radiator batteries are rarely used. Basically, only pipes are used that do not give such heat transfer as radiator batteries.
• It is also worth paying attention to the boiler efficiency indicator, the higher the efficiency, the less you will pay for gas.
  • Russian models of boilers have an efficiency of 50-80%.
  • European boilers have an efficiency of up to 95%.
• In addition to heating, we still need hot water, the higher the performance indicator hot water the better for us. For a comfortable bath you need at least 7 l/min hot water.
  • 11 kW - 3.5 -5.5 l / min.
  • 17 kW - Hot water capacity at t 35°C 5.5 -9 l/min.

Floor or mounted boiler

What characteristics should you pay attention to when choosing a gas boiler

The modern gas equipment market offers three options for boilers according to the installation method

• floor standing
• wall
• Parapet

By the number of circuits

• Single-circuit - only heating.
• Double-circuit - heating and for heating water.

Type of burner

• Atmospheric - air comes in naturally.
• Supercharged - a fan is used in operation.
• Combined.

Type of power control

• single-stage - after heating to the desired temperature, the boiler switches to the igniter mode.
• two-stage - works in two modes, during heating to the desired temperature 100% of the power, and after heating it switches to 40% power mode, the switching process occurs automatically using the automation unit.
• smoothly two-stage - 2 operating modes of 100% and 40% power, but the transition process is more gentle.
• modulated - operate in 3-4 power modes.

Type of combustion chamber

• open - air is taken naturally from the room in which the boiler is installed
• closed - air is taken from the street, through a separate coaxial pipe.

By type of traction

• Natural - in a natural way
• Forced - a fan is used in the boiler, which forcibly draws air from the street through a coaxial pipe, and also removes combustion products.

According to the ignition method

• Electro - ignition.
• Piezo - ignition.
• Manual.

The material from which the heat exchanger is made

• Steel
• Cast iron

How to calculate heat loss at home

To calculate heat loss, you can use our calculator.

The article was prepared with the information support of Teplodar engineers https://www.teplodar.ru/catalog/kotli/ – heating boilers at manufacturer's prices.

The main characteristic that is taken into account when buying heating boilers, both gas and electric or solid fuel, is their power. Therefore, many consumers who are going to purchase a heat generator for a space heating system are concerned about the question of how to calculate the boiler power based on the area of ​​\u200b\u200bthe premises and other data. This is discussed in the following lines.

Calculation parameters. What to Consider

But first, let's figure out what this such an important value is in general, and most importantly, why it is so important.

In essence, the described characteristic of a heat generator operating on any type of fuel shows its performance - that is, what area of ​​\u200b\u200bthe room it can heat together with the heating circuit.

For example, a heating device with a power value of 3–5 kW is, as a rule, capable of “covering” with heat a one-room or even two-room apartment, as well as a house up to 50 square meters. m. An installation with a value of 7 - 10 kW will "pull" on a three-room housing with an area of ​​​​up to 100 square meters. m.

In other words, they usually take a power equal to about a tenth of the entire heated area (in kW). But this is only in the most general case. For getting specific meaning need a calculation. Various factors must be taken into account in the calculations. Let's list them:

• total heated area.
• The region where the calculated heating operates.
• The walls of the house, their thermal insulation.
• Roof heat loss.
• Type of boiler fuel.

And now let's talk directly about the calculation of power in relation to different types boilers: gas, electric and solid fuel.

gas boilers

Based on the foregoing, the power of boiler equipment for heating is calculated using one fairly simple formula:

N boiler \u003d S x N sp. / 10.

Here the values ​​are deciphered as follows:

• Boiler N - the power of this particular unit;
• S is the total sum of the areas of all rooms heated by the system;
• N beats - the specific value of the heat generator required to warm up 10 square meters. m. area of ​​the premises.

One of the main determining factors for the calculation is the climatic zone, the region where this equipment is used. That is, the calculation of the power of a solid fuel boiler is carried out with reference to specific climatic conditions.

What is typical, if once, during the existence of Soviet standards for the appointment of the power of a heating installation, 1 kW was considered. always equal to 10 sq. meters, today it is extremely necessary to make an accurate calculation for real conditions.

In this case, you need to take the following values ​​of N beats.

For example, we will calculate the power of a solid fuel heating boiler relative to the Siberian region, where winter frosts sometimes reach -35 degrees Celsius. Let's take N beats. = 1.8 kW. Then, for heating a house with a total area of ​​100 sq. m. you will need an installation with a characteristic of the following calculated value:

Boiler N = 100 sq. m x 1.8 / 10 = 18 kW.

As you can see, the approximate ratio of the number of kilowatts to the area as one to ten is not valid here.

It is important to know! If you know how many kilowatts a particular installation has on solid fuel, you can calculate the volume of coolant, in other words, the volume of water that is needed to fill the system. To do this, simply multiply the obtained N of the heat generator by 15.

In our case, the volume of water in the heating system is 18 x 15 = 270 liters.

However, taking into account the climatic component for calculating the power characteristics of the heat generator in some cases is not enough. It must be remembered that heat losses may occur due to the particular design of the premises. First of all, you need to consider what the walls of the living space are. How insulated the house is - this factor is of great importance. It is also important to consider the structure of the roof.

In general, you can use a special coefficient by which you need to multiply the power obtained by our formula.

This coefficient has the following approximate values:

• K = 1, if the house is more than 15 years old, and the walls are made of brick, foam blocks or wood, and the walls are insulated;
• K = 1.5 if the walls are not insulated;
• K \u003d 1.8, if, in addition to non-insulated walls, the house has a bad roof that lets heat through;
• K = 0.6 y modern home with insulation.

Suppose, in our case, the house is 20 years old, it is built of brick and well insulated. Then the power calculated in our example remains the same:

Boiler N = 18x1 = 18 kW.

If the boiler is installed in an apartment, then a similar coefficient must be taken into account here. But for an ordinary apartment, if it is not on the first or last floor, K will be equal to 0.7. If the apartment is on the first or last floor, then K = 1.1 should be taken.

How to calculate power for electric boilers

Electric boilers are used for heating infrequently. The main reason is that electricity is too expensive today, and the maximum capacity of such installations is low. In addition, failures and long-term power outages in the network are possible.

The calculation here can be made using the same formula:

N boiler \u003d S x N sp. / 10,

after which the resulting indicator should be multiplied by the necessary coefficients, we have already written about them.

However, there is another, more accurate in this case, method. Let's point it out.

This method is based on the fact that the value of 40 watts is taken initially. This value means that so much power, without taking into account additional factors, is necessary to warm up 1 m3. Further, the calculation is carried out as follows. Since windows and doors are sources of heat loss, you need to add 100 W to each window, and 200 W to the door.

At the last stage, the same coefficients are taken into account, which were already mentioned above.

For example, we calculate in this way the power of an electric boiler installed in a house of 80 m2 with a ceiling height of 3 m, with five windows and one door.

Boiler N \u003d 40x80x3 + 500 + 200 \u003d 10300 W, or approximately 10 kW.

If the calculation is carried out for an apartment on the third floor, it is necessary to multiply the resulting value, as already mentioned, by a reduction factor. Then N boiler = 10x0.7=7 kW.

Now let's talk about solid fuel boilers.

For solid fuel

This type of equipment, as the name implies, is used for heating solid fuel. The advantages of such units are obvious for the most part in remote villages and suburban communities where there are no gas pipelines. As a solid fuel, firewood or pellets are usually used - pressed chips.

The method for calculating the power of solid fuel boilers is identical to the above method, which is typical for gas heating boilers. In other words, the calculation is carried out according to the formula:

N boiler \u003d S x N sp. / 10.

After calculating the strength indicator according to this formula, it is also multiplied by the above coefficients.

However, in this case, it is necessary to take into account the fact that the solid fuel boiler has a low efficiency. Therefore, after the calculation by the described method, a power margin of approximately 20% should be added. However, if it is planned to use a heat accumulator in the form of a container for the accumulation of coolant in the heating system, then the calculated value can be left.

Drawing of a solid fuel boiler of rated power

Overshoot and Undershoot

Finally, we note that installing a boiler for heating without preliminary calculation of its power can lead to two undesirable situations:

1. The boiler output is lower than required for heating the existing premises.
2. The boiler output is more than necessary to heat the existing premises.

In the first case, in addition to the fact that it will be constantly cold at home, the unit itself may fail due to constant overloads. And the fuel consumption will be unreasonably large. Reinstalling the boiler to a new one is associated with high material costs and difficulties in dismantling, is it worth talking about moral costs? That is why it is so important to correctly calculate the power of the unit!

In the second case, not everything is so deplorable. Excessive boiler power is basically just an inconvenience. Firstly, this feeling of unnecessarily spent money on an expensive unit. Secondly, oddly enough, a too powerful unit that constantly works at half strength reduces its efficiency and wears out quickly. In addition, a lot of fuel will be wasted.

Organization autonomous heating a private house is a complex process that requires accurate calculations and correctly selected components. It is possible to provide the required level of air heating with the help of water heat supply. In this case, you need to decide which boiler is best to choose for a private house of 100-200 sq.m.

First of all, an energy carrier is chosen - it will be used to heat water in pipes. It must meet several parameters - the constant availability of an energy carrier, relatively low cost and safety of use. Alternative types of heating: solar, heat pumps and their counterparts will not be considered. This topic is extensive and sufficiently covered in other sections of the site.

For a private house, the area of ​​​​which varies from 100 to 200 m², you can choose one of the research options:

• A gas boiler. Used if there is a connection to the gas pipeline. Most economical way heating. An alternative is the use of balloon storage or a gas tank. However, organization and maintenance costs will increase.
• Solid fuel boiler (wood, coal, briquettes). Most models do not need to be connected to the electrical network, they need a place to store fuel.
• Boilers operating on liquid fuel. Require enhanced security measures.
• Electric heating. It is characterized by high costs, but it is the easiest to do. It is often used as an auxiliary method of heating water if the operation of the main system is temporarily stopped.

The list is compiled according to indicators of economy and efficiency of use. But besides this, it is necessary to find out the optimal performance of boilers for a private house.

Performance Analysis

Before buying a particular model, it is necessary to calculate the parameters of future heating. They depend on the total area of ​​the house, ceiling height, heat loss and ventilation characteristics. Based on them, they choose optimal mode work of heat supply and as a result - the boiler.

The main operating parameters of the boilers:

• Rated power. Determines the heating area by the approximate ratio - 1 kW is needed per 10 m² of the room.
• Heat carrier volume. It depends on the piping layout. If this parameter is exceeded, the water will not have time to heat up. A lower value can be leveled by reducing the boiler power. This is problematic for solid fuel models.
• efficiency. The highest value close to 100% for electrical models. Next come gas boilers(up to 98%) and solid fuel (up to 90%).
• Dimensional characteristics and method of installation. In addition to solid fuel boilers, other models are conditionally divided into wall and floor. Solid propellant have the largest dimensions.

These parameters are specified by the manufacturer in the technical data sheet.

Choice of design and functionality

In addition to technical indicators, it is necessary to find out the functionality of the boiler for a private house. In addition to the main task of heating water, modern models should have a number of additional qualities. They affect the comfort and safety of heating operation.

These include the following features:

• the presence of a second circuit for hot water supply;
• parameter adjustment system: manual, automatic or semi-automatic;
• the ability to connect external modules: temperature sensors, programmer;
• remote control using a smartphone or similar.

The presence of these options not only has a positive effect on the control of the functions of the heating boiler, but also on its cost. As an example, one can compare different kinds heating equipment.

Overview of models and prices

Bosch WBN 6000-35

A modern wall-mounted double-circuit gas boiler adapted for heating a private house. Of the design features, the presence of two heat exchangers can be distinguished, which will allow the use of hot water in the summer. It has closed cell combustion, which does not require air intake from the room.

Characteristics:

• power - from 8 to 35 kW;
• Efficiency - up to 92%;
• There is expansion tank, pump and protection system;
• cost - from 46,000 rubles.

It can be installed in the kitchen or. For a private house with an area of ​​​​100 to 200 m², the first option is preferable.

Protherm Beaver 40 DLO

Solid propellant copper of a domestic producer. Unlike its counterparts, it has a cast-iron heat exchanger, which has a positive effect on the period of maintenance-free operation. The design does not provide for a second circuit, but it can be installed for hot water supply.

Characteristics:

• power - 32 kW;
• adjustment - semi-automatic;
• Efficiency - up to 90%;
• Price - from 57,000 rubles.

For this boiler, it is necessary to equip a separate boiler room.

Savitr Prof 36

A single-circuit electric boiler, which requires a connection to a 380 V network. It has relatively small dimensions and is easy to install. The design does not include an expansion tank. The main disadvantage is common to all electric boilers – high costs to the energy carrier.