Combined boilers for a private house. Universal heating boilers for a private house: types and characteristics

In the conditions of Russian cold winters, the issue of choosing heating equipment becomes more relevant than ever. Naturally, one of the most obvious ways out of the situation is to connect to centralized network heat supply. But this is possible only within the city. For a country house the best option will become a heating system using a boiler combined type, which is capable of using several types of fuel in operation. This device allows you to quickly switch to another type of fuel, which guarantees heat in the house even if there are interruptions in the supply of energy or the delivery of raw materials.

Depending on what type of energy carrier is present in a particular area, a low-rise construction project may involve the following types combined heating equipment:

• solid fuel - gas boilers;
• solid fuel - electric;
• liquid fuel - gas.

Important! There are combined heating boilers, which, subject to appropriate re-equipment, are capable of operating on four types of fuel. However, the presence additional equipment, through which a simple transition of the boiler to another fuel is carried out, slightly increases its cost.

For the successful use of units that operate on diesel fuel and gas, it is necessary to constantly change the burner. There are also universal models that are very expensive. If we talk about a wood-fired boiler and electricity, then in its design, along with the combustion chamber, there are heating elements. In solid fuel boilers, suggesting the possibility of switching to gas equipment, gas burners are also used.

Important! The process of changing fuel can occur both in manual and automatic modes. The first option is simpler in design and costs less than the automatic counterpart.

Design features

The most popular are solid fuel and electric combined designs. It is easy to explain: at least one of the types of solid fuel, whether it is firewood, wood chips or pellets, is present in every region of Russia. The presence of electricity is considered one of the main conditions for the creation of modern comfortable housing.

Such combined boilers heating systems include a firebox, which is used to burn solid fuels, and a heat exchanger located above it. It is in it that the heating of the coolant occurs. To ensure the operation of the boiler from the mains, special heating elements are installed in the heat exchanger, the heating of which is regulated on the control panel.

Important! Most of boilers of combined type, powered by electricity and solid fuel, equipped with automation that allows you to turn on the heating elements with a lack of heat generated during the combustion of firewood. Equipment of this type is very easy to connect to the system " smart House» and is able to automatically support minimum temperature when there are no residents. Thus, by the time the owners arrive at the house, a comfortable temperature for living will be reached in its rooms.

A combined boiler is most often used not only to heat the coolant, but also to provide hot water. We are talking about double-circuit units that can not only support housing comfortable temperature, but also be responsible for filing hot water. One circuit in such equipment is responsible for heating the coolant, and the other heats hot water.

Advice! Double-circuit boilers are highly efficient only when they are used in winter period. In summer, to get hot water, you have to heat the entire boiler, despite the fact that the first circuit remains unused.

Types of combined boilers

Let's now take a closer look at some of the most popular types similar equipment:

• Solid fuel - electric. Such units can operate at a mains voltage of 220 and 380V, delivering power in the range of 3.5-9 kW. Some models allow you to switch phases using equipment for working in networks with different voltages. Great option for country houses, since the room can be heated with firewood, and at the time of departure, automatic heating is turned on, maintaining a positive temperature in the room.
• Solid fuel - gas. In such units, automation is minimal, and therefore they require constant attention. The popularity of boilers of this type is facilitated by their cheapness.

• Diesel-gas. Switching between fuels is very easy: all you have to do is change the burner without making any complicated adjustments.

Important! Many users of autonomous heating systems agree that diesel-gas designs are unprofitable. The fact is that gas has a much lower cost, and it is most expedient to use this installation to work exclusively on gas. But even in this case, the possibility of working on a diesel engine can be used as a safety net if, for some reason, the gas supply is cut off.

• Gas-diesel-electricity-solid fuel. This is the most versatile heating unit, which will be simply indispensable in areas where interruptions in the supply of gas or electricity are possible. Such boilers can be universal both initially and re-equipped during operation by installing additional components.

Advantages and disadvantages

Consider the main pros and cons of this equipment, because they are decisive when choosing specific model heating boiler. The advantages of this type of equipment are as follows:

• The fuel used in these designs is affordable and has a low cost. At least, there is an opportunity to freely switch to more profitable fuel without changing the heating unit for this.

• Depending on weather conditions, it becomes possible to regulate the operating mode of the boiler, and this, in turn, reduces fuel costs.
• Since such designs allow the use of two or more types of fuel, this is a guarantee of the system's performance in the event that one of the types of raw materials is missing.
• The best option for automatic operation in the "smart home" system.
• Reliability and simplicity in work, and also durability.
• Ecological cleanliness of equipment.

However, the combined boiler for heating a private house has its drawbacks:

• A special room should be provided for the installation of such equipment in the house. It also stores fuel reserves.
• To connect equipment, you need three-phase network. Most likely, when installing the boiler, coordination with Energonadzor will be required.
• The scope of application of such units is very limited due to the fact that such heating systems can only be used in individual residential construction.
• If such equipment is used regularly, regular preventive inspections and maintenance are mandatory.

Important! Despite all the shortcomings described above, the advantages of such equipment are much greater. You should also take into account the excellent performance of combined boilers, which contribute to a significant increase in demand for this equipment.

Rules for the operation of combined boilers

When installing and using combined-type boilers, a number of such nuances should be taken into account:

• Solid fuel and electric boilers have quite a lot of weight. Therefore, they are all floor-standing and need to be poured into a solid foundation.
• When installing the boiler, it is necessary to install a chimney with a sufficient section to ensure acceptable draft.

• The chimney must be insulated without fail, which will eliminate the possibility of fire of those structures that are in direct contact with it.
• During continuous operation of this equipment, it is necessary to periodically clean the ash pan. The frequency of cleaning directly depends on the degree of combustion of the fuel, its type, as well as the intensity with which the boiler itself will work.

Advice! It is advisable to lay a steel sheet in front of the boiler's combustion chamber, which is dictated by safety regulations. This coating will provide the floor necessary protection from sparks and burning fuel particles.

Conclusion

There are various raw materials that multi-fuel boilers can operate on: solid fuel(wood), gas, electricity, liquid fuel. In view of this "omnivorous" this equipment is very popular. Above were considered all the features and nuances of such units, which you should pay attention to when buying. Considering all the above recommendations, you can choose a really reliable and efficient equipment, which will create warmth and comfort in the house for decades.

Rapid development individual construction became a special feature of several recent years. Frightened by the unsatisfactory state of the environment, the townspeople are massively striving for the rapidly growing suburbs, where they can build a comfortable and comfortable home. The villagers do not lag behind them, erecting spacious buildings. One of critical issues private buildings - arrangement of the heating system. It is not always possible to connect to centralized system, so you have to equip an autonomous version. In this case, combined heating boilers become a real find, universal devices that operate on various types fuel.

What is the benefit of using such a device?

Heating is a complex system that includes many elements. One of the most important is the boiler. It is desirable to determine the type of device at the design stage, having done everything for this necessary calculations. They must take into account all the features of the future building: the height of the ceilings, the level of thermal insulation of the premises, the location of the boiler and radiators, etc. The type of equipment depends on the need to design additional rooms for storing fuel, the nuances of installing a boiler, and so on. Quite often, it is quite difficult to determine the type of device.

Combined boilers are designed to work with different types of fuel. This is especially convenient when interruptions with the main type of fuel are possible.

The easiest way to choose a device is when there are no problems with obtaining any one type of fuel. If this is not possible, difficulties begin, which the combined device will help to cope with. Its design allows the device to use different kinds fuel, which makes it versatile. Which boilers are especially valuable for developers whose households are located far from communications. It is quite possible that after some time all the necessary highways will be brought up.

In this case, installing a boiler designed for one type of fuel is unprofitable and short-sighted, because a cheaper option will appear in the foreseeable future. Rebuilding the system would be quite expensive. In addition, combined devices are also indispensable where there are regular interruptions in fuel. If problems arise, it will be enough just to reconfigure the boiler and switch, for example, from gas to liquid or solid fuel.

To the benefits combined systems include:

• "Omnivorous", which allows you to level the inconvenience from possible interruptions in the main fuel.
• Equipped with outlets for the possible connection of several circuits. It could be radiator heating, "warm floor", etc.
• The presence of a heat exchange unit of increased productivity to provide hot water.
• Flexible choice of fuel types for different modes, which makes it possible to make the process the most economical.
• Possibility of installation of a boiler.
• High environmental friendliness of the system.
• The equipment functions without human intervention. The program provides for switching to alternative view fuel in the event of a main supply failure.

The disadvantages of combined devices are their high cost and volatility, since the automation of the devices is powered by electricity. In addition, most systems will require the equipment of a special room designed to store a supply of solid and liquid fuels.

Classification of combined boilers

There are several types of combined boilers used for home heating. Consider the advantages and disadvantages of each of them.

View #1 - units for gaseous and liquid fuels

This variation is the most rational. This is due to the fact that boilers operating on gaseous and liquid fuels are structurally almost the same. Switching from one type of fuel to another will take several minutes and small burner adjustments. Thermal power and the modes of operation of the device do not change. The equipment operates on liquefied, natural gas, as well as liquid fuels, most often diesel. In most cases, when installing this type of boilers, gas is chosen as the main fuel, since it is safer, more environmentally friendly and more economical.

Diesel fuel is usually chosen as a backup fuel. To store it, you will need to prepare a room with a special tank. The products of combustion of gas and liquid fuel are discharged in the same way, so no special devices or reconfiguration of the system is not required. The power of boilers using this type of fuel is quite large. They can heat large areas. That is why developers very often choose them for arranging heating in private houses where they live permanently.

Universal device, designed to work on gas, solid fuel and using electricity. Used for heating relatively small buildings

View # 2 - gas, solid and liquid fuel units

The structural difference from previous models is the presence of a firebox designed for solid fuel. Thus, the device works on natural or liquefied gas, liquid fuel, as well as coal, peat, firewood, pellets, etc. The main advantage of the system is its versatility and relatively low price.

In addition, it also has serious "cons". This is a low level of automation and low efficiency. In addition, for the normal functioning of the device, the arrangement of a full-fledged chimney will be required. Heating a large area using solid fuel is quite complicated and expensive. Therefore, such systems are used for heating small buildings without permanent residence or in summer cottages.

View #3 - boilers with electric heaters

Both modifications described above differ only in the type of fuel and use combustion energy to produce heat. Devices with heating elements can also heat the coolant through the use of electricity. It is unlikely that the power of the device will allow to heat a large building, but for small houses it will be enough. Such devices have a high level of automation and are able to protect the entire system from freezing. The equipment automatically starts the heater as soon as the temperature in the system drops to +5C.

Especially well, such devices have proven themselves where there are frequent interruptions in the main fuel, for example, diesel fuel or gas, and at the same time there is no way to constantly monitor the operation of the boiler. Automatic equipment control makes it easy to cope with this task. The advantages of boilers with electric heaters also include reliability, versatility and high efficiency, which the device produces when operating on the main type of fuel.

Multi-fuel boilers that can operate on all types of fuel are quite bulky and take up a lot of space. Available in outdoor version only

How to choose a boiler that is right for you?

Before buying a device, you need to decide not only on the types of fuel that will be used for this boiler, but also on the necessary functionality. On sale you can find:

• Single circuit devices. They are designed exclusively for space heating.
• Dual devices. Used for heating and hot water supply.
• Universal double-circuit boilers. They are similar to double-circuit ones, in addition, they are equipped with a special cast-iron stove, on which you can cook food.

The last two types of equipment are most often produced with low power. This is due to the fact that powerful equipment implies a clear separation of all functions and capabilities.

The power of combined boilers can be very different. The most popular are models with power characteristics from 20 to 120 kW. Such devices can heat rooms from 180 to 1000 square meters. m. With a ceiling height of not more than 3 m. However, there is a feature: the higher the power of the device, the less functionality it has and additional features. Boilers up to 50 kW have the largest number of options. The devices can work on almost all types of fuel, as well as be equipped with a stove for cooking and a boiler for heating water.

A feature of combined appliances is their large weight and some bulkiness. This is due to the fact that cast iron is used for the manufacture of system elements, which is characterized by high corrosion resistance. And it inevitably appears due to the presence of condensate that accompanies the process of burning liquid fuel. For this reason, combined boilers are produced exclusively in floor-standing versions. To install the system, most often equip separate room with an obligatory supply of fresh air.

Overview of popular brands - what does the market offer?

South Korean boilers Kiturami designed to work under heavy loads in all climatic conditions. Most of the models are designed to operate on two types of fuel. For example, solid and liquid. Most often equipped with two circuits, can be installed in residential or in industrial premises. The popular model Kiturami KRM has a two-chamber flow type heat exchanger. The turbocyclone oil burner is equipped with a heating system, built-in pump and filtration system. The device is controlled from the remote control. Modification KRM 30 can heat rooms up to 300 sq. m, KRM 70 - up to 550-600 sq. m.

Most of the models of the famous South Korean brand Kiturami are designed to work with two types of fuel.

Another well-known manufacturer Italian company Ferroli. All devices manufactured by the company have special protection against overheating and freezing. In the process of developing devices, the company uses new technologies aimed at reducing toxicity flue gases and increase in efficiency. Ferroli brand equipment is modified specifically for Russian operating conditions, including low-quality water and gas. The company produces several lines of devices of various capacities. Ferroli GN1 are very popular. These are cast iron floor standing boilers, whose power varies from 23 to 93 kW. The devices are designed to work with liquid or gaseous fuels.

A domestic manufacturer from Krasnoyarsk produces equipment under the brand name Zota. These are combined devices operating on gaseous, solid, liquid fuels, as well as on electricity. Boilers are made of steel sheets 3-4 mm thick. The power of the devices is from 20 to 50 kW. The devices meet world standards in the field of reliability, quality and safety. Today, four models of such devices can be found on sale. All of them are characterized by increased working pressure, which allows to achieve maximum efficiency. special design heat exchanger increases the quality and speed of heat transfer. A special ejector mechanism mounted on the firebox door reduces the density of smoke. At the same time, the cost of domestic devices is lower than that of foreign analogues.

Combined heating appliances from Krasnoyarsk are different high quality, reliability, durability and efficiency at a relatively low price

It is also worth noting brand boilers Protherm, which are characterized by durability, high performance and low toxicity of flue gases. This is due to the use of modern burners and the optimal shape of the combustion chamber. To reduce heat costs for heating and the cost of operating the device, its body is covered with special thermal insulation boards made from mineral wool. All appliances are equipped automatic system management. For residential premises, the models of the Bizon NL series are most often used. This is a two-circuit equipment made of low-temperature cast iron. Depending on the type of burner, the appliances can operate on various types gaseous and liquid fuels. Their power varies from 30 to 80 kW.

Combined boilers - practical solution for arranging heating of a private house in conditions of possible interruptions in the main fuel. There are many modifications of devices, which makes it possible to choose the most optimal option for each case. It is best to purchase the device in specialized companies. Experienced specialists will help determine the model and, if necessary, carry out installation work. Installing combined equipment ensures that your home will always be warm and cozy.

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Of course, one of best options heating is gas. But what if the installation of such equipment is impossible due to the lack of gasification? The situation can be further complicated by the fact that installing a single-fuel model is at least not practical. In this case, universal combined heating boilers can come to the rescue. country house. Why can the use of this type of heating equipment be justified, despite its high cost? What to look for when choosing multi-fuel equipment?

How to choose a combined boiler in a country house

To make it easier for yourself to choose and narrow down the search for a suitable universal combined boiler for heating a country house, you must first decide what functions it will perform. Depending on this, all models can be divided into the following categories:

Except additional features, which can be hallmark some models of universal combined boilers for heating a country house, when choosing, you need to pay attention to what types of fuel they can work with.

To increase the autonomy of combined boilers, you can also purchase a pellet burner. It is, as a rule, universal and suitable for most combined models. You can do the installation yourself.

To choose a combined boiler for a country private house, you need to pay attention to the possibility of performing additional functions. If in a city where there is the possibility of connecting to a centralized hot water supply, there is no need for self-heating of water, then in rural areas this function is one of the most important. There are several design solutions that allow you to accomplish this task.

Good planning and use different types fuel for specific purposes can significantly reduce the cost of heating a building and heating hot water.

Requirements for the installation of universal boilers

Installation of a heating boiler on combined fuel can be carried out only after obtaining permits for the use of certain types of raw materials. So, for electricity and gas, you will have to make a project and coordinate the use in various instances. In addition, during installation, you will need to strictly adhere to the recommended safety requirements.

1. Installation must be carried out exclusively on a solid concrete base.
2. The boiler room should be good natural circulation air.
3. To increase the service life, it will be necessary to install water treatment systems.

It is necessary to choose a boiler at the early stages of construction, so you can choose a model that will fully comply with the expected not only with the necessary options, but also with dimensions.

Calculation of power and temperature of a warm water floor

Boiler power selection calculator

First of all, they are characterized by structural and operational parameters. At the same time, the group of performance indicators to a large extent depends on the fuel used. Liquid, gas and solid fuels assume their own special qualities, which manifest themselves in the process of maintaining the unit. To get the most out of different combustible materials, many homeowners are switching to combination or universal boilers, which are multifunctional. With this equipment, you can use the most suitable look fuel based on season or heating requirements.

Features of combined boilers

The main feature and advantage of units of this type is that the user can, in case of a shortage of one type of fuel, use another - more affordable one. They are also financially beneficial. For example, electric models are considered the most expensive to operate, while gas mixtures, on the contrary, require the least cost. It is important to bear in mind that universal boilers can support the use of an incomplete range of fuels. So, there are models that work only on solid fuel combustible materials or electricity, or modifications that are heated by diesel fuel and gas - to choose from. But multi-fuel devices are also common. In both cases, the boilers support one main type of fuel through the installed main burner, and in addition, the user can purchase special integrated installations for working with alternative fuels.

Reviews about the model Atmos

With its DC 32SP and DC EP series, Atmos demonstrates the central direction of technological development in the segment, which has given a new impetus to the development of alternative heating designs. This equipment operates on the principle of generator gasification, which is complemented by the function of a biofuel burner. The peculiarity of this direction is due to the use of pellets - a relatively new type of fuel that provides a high level of energy efficiency. In addition, Atmos universal boilers can operate on natural gas and fuel oil. Unlike most combined models, such units also eliminate the need to use different burners. The versatility of the function is ensured by the presence in the device of several chambers designed for different groups of fuel filler.

Reviews about the model Baxi

In the Roca line of the Spanish manufacturer, the P-30 model is presented, implemented with a bias towards a different concept. The developers used lightweight gray cast iron, thanks to which high thermal insulation was achieved. There are several modifications of this unit, which differ in power - from 23 to 52 kW. The choice in favor of one or another version should be made based on the place where it is planned to use this universal boiler. At home, it is quite possible to operate even an installation of average performance as the main source of heating. AT small apartment the initial modification of the P-30 is more suitable. Boilers are supplied mainly with solid fuel, but how Alternative option you can also use liquid fuel - diesel or diesel fuel.

Reviews about the model Jaspi Tupla

This model can be considered not only as a universal boiler in terms of the use of different types of fuel, but also as a multifunctional installation in terms of tasks to be solved. In addition to the main function of heating, this equipment solves the issues of hot water supply. Other combined models are famous for the same qualities, but in this modification, the operating modes are maximally optimized for domestic needs. Firstly, this universal heating boiler is endowed with a wide range of safety systems, since working with gas requires high level reliability. Secondly, the ergonomics of operating modes control causes positive feedback not only in terms of electronics performance, but also in relation to structural elements.

Reviews of Buderus models

The Buderus firm is well-known to the experts who are engaged in the engineering and communal equipment. In this case, it is worth considering custom solution Logano S121-2. The versatility of the model can be called conditional, since the unit is still mainly focused on working with solid fuels and, above all, with firewood. But the boiler has two significant features. First of all, it is the possibility of pairing with another heating equipment, which can work on any fuel raw material. The second noteworthy aspect is related to the fact that universal solid fuel boilers from the Logano series work on the pyrolysis principle. In other words, recycling of the combustion products themselves is envisaged, which reduces the amount of harmful emissions and increases the heat transfer of the equipment.

Positive feedback about universal boilers

As experienced users of such boilers note, they practically do not lose to similar mono-fuel units in terms of energy efficiency, but at the same time they retain the possibility of using the fuel that is optimal in specific conditions. Obviously, the absence of restrictions on the choice of one or another combustible material also ensures a reduction in operating costs. In addition, universal heating boilers, simply because of the complexity of their device, should be endowed with additional systems security. Accordingly, the practice of use demonstrates a high degree reliability of such models.

Negative Feedback

If during operation the user has the opportunity to plan financial costs for the purchase of fuel with high savings, then the purchase of such a boiler in itself will in any case cost 20-30% more. Again, technological and structural complexity inevitably contributes to an increase in the price tag. The second serious drawback that users note is related to maintenance and basic content. Unlike mono-fuel units, universal boilers involve a wider range of preventive measures that their operator must comply with. This also applies to cleaning the burner chambers, and checking the working components, as well as testing circuits that operate under different loads depending on the fuel used.

Conclusion

The trend of transition from traditional to universal boilers was formed against the backdrop of the popularization of biofuels. Those same pellets cannot be used for conventional solid fuel fireboxes. Therefore, special units designed for biofuels appeared. And against their background, in turn, the idea arose to combine different furnace systems in one design. In its current form, the universal boiler of a private house is capable of providing both full heating and maintenance. hot water. At the same time, one should not think that the variety of fuels available for use greatly simplifies the operation process itself. Of course, thanks to the versatility, you can count on significant savings. But even it will become possible only if the appropriate operating modes of the boiler are used skillfully and in a timely manner.

Not all corners of our country are provided with gas pipelines, therefore, during the construction of summer cottages or during permanent residence in such an area, the issue of space heating must be solved in a different way.

However, the industry does not stand still and someday such a pipe will appear there, so combined boilers for heating a private house are the best suited for similar project.

Types of multi-fuel boilers

If you have a need for a multi-fuel unit, then when choosing it, you should take into account that universal heating boilers for a private house have a certain capacity. This is very important factor, so it is very important to take into account the area of ​​the building and its need for heating.

Combination gas - diesel

• This version of multi-fuel units is the most common and there are reasons for this. In order to switch from one fuel to another, it is enough just to change the burner (supplied in the kit), without resorting to complex settings (the instruction explains how to do this).
  This simplicity is explained by the fact that the same combustion chamber is used for gas and diesel fuel.
• From a technical point of view, such a combination is quite effective, although the price of gas and diesel fuel are very different from each other. The operating life of the unit mainly depends on the quality of the heat exchanger, and it can be made of either steel or cast iron, combined (bithermic) or separate.
• But many users of autonomous heating are unanimous in their opinion that if there is a gas pipeline near the house, it is better to use mono-heating devices.
  This is due to the fact that they are much cheaper both to purchase and to operate. Such a combination is beneficial in cases where a gas branch will soon be laid near the house, but heating is needed now.

Combination gas - solid fuel

• You can also install a gas-solid fuel multi-fuel device with your own hands, although they are mainly used for firewood and coal. Security control and automation are minimized there, so such units require maximum attention during operation.
  But, nevertheless, such devices are very cheap compared to their counterparts, and this contributes to their great popularity.

Combination electricity - solid fuel

• , as a rule, can work from 220V or 380V, and their power is from 4 kW to 9 kW. Some options like "Zota" or "EVP-M" can be operated in different modes from both 220 V and 380 V, that is, switch from one to three phases and vice versa.
• Certainly these options heating appliances very convenient for summer residents, especially when country house no one lives permanently.
  After all, being present on the spot, you can easily maintain the heating of the room with the help of firewood (many even enjoy it), but when you leave, the unit switches to automatic mode and uses electricity to maintain a positive temperature in the heating system.

Combination gas - diesel - solid fuel - electricity

• If we talk about maximum versatility, then combined boilers for heating a house, operating on the four main types of fuel for such units, can just be called such.
  If we talk about each fuel separately, then, perhaps, we should pay attention to solid fuels. This is because it is also quite diverse - this includes firewood, coal, briquettes, coke, pellets and just lumber waste.
• Such universal heating boilers for the home are very convenient for hard-to-reach areas where interruptions in electricity and gas are possible. But the forests Russian Federation a lot, so there are hardly any problems with solid fuel, especially since this resource is relatively cheap.
  So the installation and operation of combined units of this type for extreme conditions is highly recommended (see also about features).

Recommendation. The very fact of the existence of multi-fuel heating devices speaks of the undoubted progress of human genius, and we, of course, are pleased to take advantage of its achievements.
But in such situations, the question is most often appropriate: “Do I need this?”.
If you need constant temperature maintenance in the water heating circuit, then, of course, you can’t do without gas or electricity, because only an uninterrupted supply of energy can provide such a regime.
But if this is not necessary, then it is much cheaper to use mono-fuel equipment, in particular, working on wood or only on gas.
The question of saving is important here, and if you have power outages, then why is this function on the boiler, and if there is gas at home, do you need solid fuel if you are a rare guest there?
There may be many such questions and answers, so it is better to choose the "golden mean".

Conclusion

Perhaps it would be appropriate to mention another combination that is very convenient for a country house - this is a pyrolysis boiler plus for maintaining the temperature in your absence, although these are already two devices. In order to make a choice, you can also use the photo and video information located on this page.