An economical boiler for heating a brick two-story house with an area of ​​180 sq. meters

The minimum required power of an electric boiler for heating a house with an area of ​​150 m2

Classic electric heating elements have compact dimensions and a minimum of communications around; they can be installed in any room.

If the house is average (standard masonry of 2 bricks, no insulation, ceilings up to 2.7 m, the climatic zone of the Moscow region), the minimum required power of heating equipment is calculated quite simply: 1 kW for every 10 sq m of heated area.We also recommend setting a power reserve of 15-25%.

Of course, the conditions are always individual, and if the house is located in the extreme northern or southern part of the country, is well insulated, has high ceilings or a non-standard large glazing area, it is necessary to make accurate calculations, taking into account correction factors. You can generate them using the calculator below.

Calculator for accurate calculations

The thermal power of the electric boiler must provide the total power of the radiators, which in turn is calculated based on the heat loss of each room separately. Therefore, find the values ​​\u200b\u200bfor each heated room and add them up, this will be the minimum required electric boiler power for the entire heated area of ​​your house.

Heating organization options

Electric boilers are compact in size, require a minimum of piping and have a modern design that allows you to install them anywhere.

The most profitable and justified from an economic point of view is the use of an electric boiler during temporary residence in the house, for example, upon arrival only for the weekend, vacation or holidays. In this case, even high temporary costs of electricity can be covered for a long time by 1.5-2 times lower initial cost of the electric boiler, minimal costs for its installation and organization of the heating system.

To prevent freezing of the heating system, the boiler must maintain a positive temperature even during the absence of the owners

It is important to choose a model with the largest possible change in power so that the operating mode is as economical as possible.For example, models with 3-stage power control are a bad option, since the heat output during operation even at the first power stage will be in excess, and these are unjustified expenses.

This is how a compact and economical full-fledged heating system with an inexpensive electrode boiler looks like.

It is still justified to use an electric boiler as additional heating equipment with a main solid fuel, liquid fuel or gas boiler. An effective option is to work at maximum load only at night (when electricity tariffs are minimal) and accumulate excess heat in a buffer tank. In any case, when used as additional heating equipment, rather low-power models, sometimes even single-phase ones (up to 6 kW).

It is completely unjustified from an economic point of view to heat a house with an area of ​​200 m2 with an electric boiler for permanent residence, since electricity costs can reach 35,000-45,000 rubles per month. In addition, it is worthwhile to provide a connection to the mains through a voltage stabilizer, buy and connect a generator in case of a temporary power outage.

The best solid fuel boilers for direct combustion

Viadrus Hercules U22

The lineup

The model range of this series of Vidarus boilers is represented by seven solid fuel boilers with power from 20 to 49 kW. The most productive of them is able to heat a building up to 370 sq.m. All equipment is designed for a maximum pressure in the heating circuit of 4 atm. The operating temperature range in the coolant circulation system is from 60 to 90 ° C. The manufacturer claims the efficiency of each product at the level of 78%.

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Design features

All models of the presented line are designed for floor installation. They have an open combustion chamber with air supply due to natural draft. The large square-shaped doors easily open wide, which is convenient when loading fuel, removing ash and inspecting the condition of internal elements.

The built-in heat exchanger made of high-quality cast iron is adapted to work in a single-circuit heating system. The boilers do not have devices powered by an external electrical network and are operated in a completely autonomous mode. All settings are mechanical.

Fuel used. The design of a spacious firebox is designed to use firewood as the main fuel, but coal, peat and briquettes can be used.

Zota Topol-M

The lineup

The line of six Zota Topol-M solid fuel boilers starts with a compact 14 kW model designed to heat a house for an average family, and ends with an 80 kW unit capable of heating a large cottage or production workshop. The boilers are designed for operation in systems with pressure up to 3 bar. Efficiency of thermal energy use is 75%.

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Design features

Their distinctive feature is a slightly raised design, which makes it more convenient to open the ash pan door and empty it. Open type combustion chamber with chimney connection from the rear wall. There is a built-in temperature sensor. All adjustments are made manually.

A heat exchanger for a single-circuit heating system is mounted inside, connected to 1.5 or 2” pipelines. Boilers work offline. Products of this brand are easy to install and reliable in operation.

Fuel used.Firewood or coal is used as fuel, for which a special grate is provided.

Bosch Solid 2000 B-2 SFU

The lineup

Solid fuel boilers Bosch Solid 2000 B-2 SFU are represented by a number of models with a capacity of 13.5 to 32 kW. They are able to heat buildings with a usable area of ​​up to 240 sq.m. Parameters of the circuit operation: pressure up to 2 bar, heating temperature from 65 to 95 ° C. Efficiency according to the passport is 76%.

Watch product video

Design features

The units have a built-in single-section heat exchanger made of cast iron. It is connected to a single-circuit heating system through standard 1 ½” fittings. The boilers are equipped with an open type combustion chamber with a 145 mm chimney. For normal operation, a connection to the electrical network with a voltage of 220 volts is required.

The temperature regulator and protection against an overheat of water is provided. The ash pan has a small volume, so it requires regular cleaning. Manufacturer's warranty 2 years. The design is simple, safe and highly reliable.

Fuel used. The boiler is designed to use hard coal. On this type of fuel, it demonstrates high efficiency. When working on wood or briquettes, the efficiency is noticeably reduced.

Protherm Beaver

The lineup

A series of solid fuel boilers Protherm Bober is represented by five models with power from 18 to 45 kW. This range completely covers any private house. The unit is designed to work as part of a single-circuit heating circuit with a maximum pressure of 3 bar and a coolant temperature of up to 90 ° C.For the correct operation of the control system and actuation of the circulation pump, a connection to the household electrical network is required.

Watch product video

Design features

Boilers of this series are equipped with reliable cast-iron heat exchangers. The original design of the combustion chamber increases the efficiency of heat transfer. Exhaust gases are discharged through a chimney with a diameter of 150 mm. For connection to the heating circuit, there are branch pipes for 2”. Such boilers are designed for long-term operation.

Fuel used. The declared power is designed for burning firewood with a moisture content of up to 20%. The manufacturer has provided for the possibility of using coal. In this case, the efficiency of work increases by several percent.

3 EVAN Warmos-IV-9.45

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

Evan JSC turns 23 in 2019, and during this time the company has mastered the production of a wide range of heating equipment. This means that the entire heating and hot water system, except perhaps for pipes and valves, can be equipped with its products. Of particular interest to potential buyers is the updated electric unit of the Warmos-IV series with a capacity of 9.45 kW, capable of heating a house up to 94.5 square meters. m.

In order to optimize energy consumption, the mechanical thermostat was replaced with an electronic thermal control system. Now the boiler “by 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 allow us to call the boiler modern, economical and, importantly, affordable to a wide consumer circle.

Modern economical technologies

One such technology is a heat pump. With the help of earthly resources, it is able to produce at least 4 times more energy than it consumes itself. If you need a 20 kW boiler for your home, then a heat pump with a power of only 5 kW is suitable for heating. The heat pump is powered by electricity. The pump is also 3-4 times more expensive than a first-class gas boiler with high efficiency.

Solar collectors can be used as heating. It does not require any energy consumption at all. With due installation of solar collectors able to heat underfloor heating and provide you with the necessary amount of hot water. But then again, it all comes down to finances.

These technologies are our future. There will come a time when both the heat pump and the solar collector will be available to everyone.

As a result, we get that using a warm floor + temperature control + heat pump (or collector) we can get the most economical home heating.

If you are looking far ahead and confident that you can afford such expenses, then you definitely will not regret installing all this at home.

Heating organization options

There are three ways to use an electric boiler in an individual heating system of a private house:

Operation during temporary residence.The most profitable option from an economic point of view, since the lower initial cost of an electric boiler (compared to gas or TT counterparts) will cover high electricity costs for several more heating seasons. An ideal option when the owners come for the weekend or holidays, and the rest of the time the boiler operates at minimum power in order to maintain a positive temperature. Important characteristics of the electric boiler with this approach are smooth (not 3 or 6-step) power adjustment and the ability to connect GSM module for remote control of the boiler.

Operation as additional heating equipment. Another economically viable option involving the use of an electric boiler. The electric boiler at a reduced night rate heats the heat accumulator, which gives off heat to the heating system for a long time during the day, the main heating equipment works the rest of the time. The ability to program the operating mode of the electric boiler will greatly facilitate control and management (in more expensive models it is provided for by standard automation, in budgetary issues it can be solved by installing a room thermostat).
How to choose an external thermostat for an electric boiler and save up to 30% on heating every month

Operation as heating equipment. Expensive and not economically justified option for a relatively large house with an area of ​​150 m2 due to high electricity costs (up to 25-30 thousand rubles).If the installation of analogues is not possible, you should definitely choose the most economical models of the middle and higher price segments, in which there is a programmer that allows you to set the operation to a lower temperature during sleep and the absence of the owners of the house

It is also important to install a counter that differentiates consumption by day zones (peak, semi-peak, night). In case of power outages, it is imperative to purchase a generator, connect the electric boiler itself to the network through a stabilizer in order to avoid automation malfunctions due to power surges.

4 Protherm Skat 6 KR 13

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

Consumers had a lot of time to check how reliable the Slovak Skats 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. We did not find negative reviews and explicit criticism on the network, and even on specialized forums, where a rather skeptical attitude towards budget brands reigns, they are in good standing. And no wonder - a wall-mounted heater, among other advantages, is simple and versatile installation (there is no need to maintain a 3-phase network, you can connect weather-dependent automation, a DHW storage boiler and organize a cascade heating system).

The developers took a very responsible approach to the issue of the efficiency of the model, providing a high (99.5%) efficiency and providing for stepwise switching on of power with a step of 1 kW. At the same time, the heating elements are switched alternately, and the load on them is distributed evenly.Protective systems against 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.

How to choose?

To choose the most suitable heating device, it is worth evaluating it with the following parameters:

1. Heated area. Calculated using the above formula. This parameter is specified in the product data sheet. Many models have the ability to control modes. Moreover, some have an intelligent system and a temperature indicator that allows you to save energy.
2. View. Boilers are divided into single-circuit and double-circuit. The difference lies in the fact that the single-circuit alternately acts as a heater and a device for heating water. Dual circuits can perform these functions simultaneously. To increase the functionality of a single-circuit device, you can connect an external boiler.
3. Installation. Floor-standing appliances have a high power compared to wall-mounted ones. But, for heating a small private house, a wall-mounted unit is enough. It consumes less resources. At the same time, its power is enough not only for heating, but also for stable maintenance of a comfortable temperature in the house. It can also be used as a backup heat source in parallel with other boilers.
4. Power type. The units are equipped with several heating elements with a power of 1.5 kW. The more heating elements, the more productive the device.
5. Control. The display can be built into the housing. Also, control can be remote (via a smartphone) and intelligent. In the second case, the unit itself sets the optimal mode due to special sensors that determine the temperature in the street and in the room.In addition, most modern models can work in the Smart Home system.
6. Additional options. This includes the ability to adjust the power, the presence of an economy mode, remote control and other functions. Almost all models are equipped with a sensor for shutting down in an emergency, as well as frost protection.

Forced circulation system

Equipment of this type for two-story cottages is considered more preferable. In this case, the circulation pump is responsible for the uninterrupted movement of coolants along the mains. In such systems, it is allowed to use pipes of smaller diameter and a boiler of not too high power. That is, in this case, a much more efficient one-pipe heating system for a two-story house can be arranged. The pump circuit has only one serious drawback - dependence on electrical networks. Therefore, where the current is turned off very often, it is worth installing the equipment according to the calculations made for a system with a natural coolant current. By supplementing this design with a circulation pump, you can achieve the most efficient heating of the house.

A gas boiler without electricity is a traditional model of a floor appliance that does not require additional energy sources to operate. It is advisable to install devices of this type if there are regular power outages. For example, this is true in rural areas or summer cottages. Manufacturing companies produce modern models of double-circuit boilers.

Many popular manufacturers produce different models of non-volatile gas boilers, and they are quite efficient and of high quality. Recently, wall-mounted models of such devices have appeared. The design of the heating system must be such that the coolant circulates according to the principle of convection.

This means that the heated water rises and enters the system through the pipe. In order for the circulation not to stop, it is necessary to place the pipes at an angle, and they must also be large in diameter.

And, of course, it is very important that the gas boiler itself is located at the lowest point of the heating system.

It is possible to separately connect a pump to such heating equipment, which is powered by the mains. By connecting it to the heating system, it will pump the coolant, thereby improving the operation of the boiler. And if you turn off the pump, then the coolant will again begin to circulate by gravity.

2 Vaillant eloBLOCK VE 12

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

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

Users speak flatteringly about the efficiency of the Vaillant eloBLOCK VE 12 electric boiler, its simplicity and neat appearance. To increase the service life, it is necessary to connect a voltage stabilizer.

Calculation of the minimum required power for a house of 200 square meters

When choosing a heat generator for heating a private house, it is necessary to determine the power of the boiler. If you use a device with an insufficient power rating, normal heating of the room will not be possible.

The power calculation is carried out on the basis that on average 41 watts of thermal energy per hour is spent per cubic meter of free space in the room.

To calculate the volume of housing, the total area is multiplied by the height of the ceilings in meters. As a rule, it is about 3 m. Thus, the volume of a house of 200 square meters is approximately 600 m3.

Considering the cost of thermal energy per 1 cubic meter, it can be calculated that for a house of 200 m2 a gas boiler with a minimum power of about 25 kW is needed. If the heat generator will be used to heat hot water, it will require additional power.

Regulatory documents

You are unlikely to find a clear answer to the question of whether it is possible to install a gas unit in a bathroom in the documentation. The norms of SNiP 1987 prohibit the placement of such equipment in the bathroom. However, later - since 2003, the above SNiP was declared invalid and SNiP 42-01-2002 "Gas distribution systems" was put into effect instead. But it does not clearly indicate whether it is possible to install a gas boiler in the bathroom. You can get an affirmative answer only by contacting your gas supply company.

Important! Installation in a bathroom or toilet is subject to only a device with a closed combustion chamber mounted type. As practice shows, most gas workers prohibit the installation of gas equipment in the bathroom

The main reasons for rejection are:

As practice shows, most gas workers prohibit the installation of gas equipment in the bathroom. The main reasons for rejection are:

requirements of old standards;
insufficient room size;
high humidity in the bathroom, which leads to a quick failure of the equipment;
interruption of thrust due to the mixing of moisture with combustion products.

It is easier for those who already have a gas boiler in the bathroom or toilet. Then they change the old unit for a new one without long paperwork.

However, some owners go for tricks, and in order to get permission from the gas service, they pass off the future bathroom as a furnace. And after installing the unit, they also place a shower and a sink there. But such a violation is fraught with negative consequences in the form of penalties and disconnection from the gas pipeline. The fact is that gas workers are required to periodically check the gas equipment located in the house, so in a year or two the fraud will still open and you will have to pay dearly for it.

If, despite the refusal, you are ready to continue to seek permission to install the unit in the bathroom, then you can go the following way:

1. The head of the gas service needs to make a request to connect a heating device in the bathroom. In this case, a list of regulatory documents that allow this should be attached.
2. If you are refused, you can file a lawsuit in court, where there is always the opportunity to win the case.

The best gas heating boilers and their manufacturers Household gas heating boilers - their main differences

What is better for a building of 150 m²

It is impossible to unambiguously determine which boiler is better for a private house of 150 sq. M., since for the right choice it is necessary to take into account all factors, ranging from the total quadrature and the length of the mains, to the level of thermal insulation and the thickness of the walls of the building.

To accommodate a gas boiler, it will be necessary to build a chimney and forced ventilation, when such structures are not needed for an electrical appliance. Based on this indicator, it is much easier to install a boiler with heating elements in any room, moreover, gas equipment can only be used if there is a gas supply line, which is not always available.

The gas boiler has one big advantage, it is the speed of heating the liquid and the cost of resource costs. One cubic meter of gas costs much less than the number of kilowatts of electricity required to heat the same volume of coolant. But there are cases when heating is carried out in a house in which an exhaust hood is not structurally provided or it does not meet safety requirements, so here the best option would be to use an electric boiler.

Also, the main advantage of an electric appliance is the absence of a combustion chamber and an open flame. Its only drawback is not the smallest cost of electricity.

If the choice nevertheless fell on a gas boiler, then it must also be chosen carefully.Which gas boiler is better for a private house of 150 sq. M.? When answering this question, it is also necessary to take into account the total area of ​​\u200b\u200bthe room, the region in which the building is located, as well as the capacity of the heating system. Gas boilers come in various capacities, which is expressed in the size of the combustion chamber and the size of the heat exchanger, the higher the efficiency of the device, the larger the coil will be.

The minimum required boiler power for a house is 150 sq. m.

Power requirements depend on the heat loss of the house. For an average house with a ceiling height of 2.7 m, located in the climatic zone of the Moscow region, calculations are made based on the rule: 1 kW for every 10 m2. We also recommend putting in 10-30% power reserve.

This simple calculation is sufficient in more than 90% of cases. If the house has a large glass area, high ceilings, is located in the extreme southern or northern point of the country, it is advisable to make accurate calculations. To do this, you can use the calculator below.

Calculator for accurate calculations

Boiler power should be the total power of heating radiators, so first you need to calculate exactly their required power: this is done for each room separately. Summing up the obtained values, you will get the minimum required power of the radiators, and, accordingly, the boiler, for the entire heated area of ​​\u200b\u200bthe house.

An easy way to calculate power

To accurately calculate the power of a gas boiler, you need to determine the amount of heat for your home. This is done very simply - according to the formula "10 to 1". This means that for every 10 m2, 1 kW of heat is required. In this case, it is also necessary to take into account additional coefficients that vary depending on certain conditions.

For example, for a house with an area of ​​140 m2, 14 kW of heat is needed. Where do these numbers come from? According to the regulations, a standard house built with energy efficiency and safety in mind consumes an average of 0.6 kW of heat per 10 m2. To this value are added ventilation losses, which average 30% (0.2 kW), as well as a mandatory margin of small power (30% - 0.2 kW). As a result, we get the figure 1 kW per 10 m2.

This calculation is rather rough. But in most cases, it helps to choose a normal gas boiler that will cope with heating the house.

How to choose?

When choosing a unit, consider the following parameters:

1. Power. The main parameter on which the heating area depends. It is necessary to decide for what purpose the boiler is needed. If for heating, then a power of 10 kW is enough. If for water supply, then the value should be increased by 20%. If the organization of a warm floor is necessary, then you can choose a boiler with a capacity of up to 15 kW.
2. Varieties. Devices are single-circuit and double-circuit. The first allow you to heat the premises, but can also provide water heating. However, the options cannot be executed at the same time. It is possible to supplement the unit with a boiler to increase its performance. Double-circuit models are equipped with a built-in tank and simultaneously perform 2 functions.
3. Mounting method. Floor-standing units are usually quite massive, so they require the arrangement of a separate room. They quickly heat water and heat a private house, but consume a large amount of electricity. Wall-mounted units can handle the heating of small homes while using less fuel.
4. Power type. Heating occurs due to several heating elements. The power of the device depends on their number.
5. Control type. The control panel can be located on the boiler itself (buttons or sensor). Also, the unit can be controlled by a remote control, through a program on the phone and through the Smart Home system. Models with an intelligent control system are more expensive, but their use is simpler. They are automated: a special sensor itself selects the desired temperature, and the user can only control the process.
6. Additional functions. The more additional options, the higher the cost of the product. These include power adjustment: you can set different parameters depending on the season to maintain a comfortable temperature. If the unit is equipped with an electronic thermostat, nothing needs to be done, since it itself sets the optimal parameters. In addition, devices can be equipped with frost protection and protective shutdown: the sensor turns off the device in case of an emergency.