Economical gas boilers for a private house. We choose the most economical heating boiler, take into account the pros and cons. Technical characteristics of solid fuel boilers

Burner type selection

The efficiency of a wall-mounted gas boiler also depends on what type of burner it is equipped with. The following types of burners are installed in closed combustion chambers: two- and multi-stage; modulation. The essence of the modulation element is that when the required temperature is reached, it switches to the minimum level. The electronic control system independently regulates the power of the burner depending on the temperature in the room or on the street.

Units with a closed combustion chamber are popular not only because of the economically operating burner, but also because they are equipped with compact coaxial chimneys. They are cheaper than full-fledged classic counterparts and are easier to install. Installation of a conventional chimney will require more effort and official permission from the relevant services, which will not be needed when installing a coaxial pipe.

Life time

Economical gas boilers cannot have a short service life. They should work for at least 30 years, while conventional inexpensive units last 10-15 years. The period that the boiler can work without breakdowns is also important. Usually it depends on the total operating period.

Service maintenance

Many buyers of wall-mounted gas boilers, when installing an autonomous heating system for the first time, try to save on planned after-sales service. If you do not carry it out, then you can save about 12,000 rubles a year, but on the other hand, there is a risk of shifting the focus of the burner, there are deviations in the operation of the automation, and soot is formed. At first glance, these errors are small, but they lead to a decrease in the efficiency of using the heat of the burned fuel, as a result, the cost of operating the unit will increase.

How to reduce gas consumption in an operating boiler?

You can also increase efficiency and reduce fuel consumption in an already purchased gas boiler, if you use the following recommendations:

1. Insulate walls well. If the house is insulated with modern thermal insulation materials, then the heat inside the premises will last longer, and this will help reduce gas consumption.
2. Replace windows and doors or insulate them. Very often, poorly insulated windows and doors are the main sources of heat loss, especially if they have gaps or are installed incorrectly.
3. Some models of units have "auto" or "economy" modes. When they are turned on, the automation system will smoothly change the degree of heating. Using these modes, you can save up to 10% of fuel.
4. Install a temperature sensor on the gas boiler, which will change the settings depending on the temperature difference between inside and outside.

Models of economical wall-mounted gas boilers

ARISTON GENUS PREMIUM EVO 24FF

The Italian model of the condensing type ARISTON GENUS PREMIUM EVO 24 FF has two circuits and has low gas consumption and high efficiency = 108%. It is also small in size and can fit in a small room, such as a bathroom or kitchen. The unit is equipped with an innovative 1:10 modulation, which is able to change the power. Thus, an optimal temperature indicator and maximum gas savings are achieved. With a power of 22 kW, the boiler consumes only 2.33 cubic meters. m of gas per hour.

Bosch Gas 6000 WBN-24CRN

The double-circuit boiler of the German company Bosch Gaz 6000 WBN-24CRN is very popular with consumers. Although it is not condensing, the unit has a fairly high efficiency = 93.5%. For work, he needs only 2.7 cubic meters. m of gas per hour at maximum power. This model is equipped with a closed combustion chamber and is suitable not only for heating a house, but also for an apartment.

Protherm Panther 12 KTZ

For heating small rooms up to 80 m², the wall-mounted gas boiler Protherm Panther 12 KTZ is ideal. Its power is 11.5 kW, which is quite enough to maintain heat even at very low temperatures. This model is equipped with a closed combustion chamber and has a record low gas consumption of 1.3 cubic meters. m per hour. It has a compact size and is highly reliable.

To choose the most economical gas boiler for your home, you should carefully analyze the operating conditions of the future unit. Then you need to think about what characteristics it should have in order to economically spend fuel in the current realities.

A growing number of people are willing to pay extra money for the increased consumption during heating of a private house or apartment. Hence the demand for economical gas boilers, designed to replace old heating units or take a place in the boiler rooms of new buildings.

But try to figure out which boilers are the most economical and how to choose the right model among them. Homeowners often fall for the bait of unscrupulous sellers and buy more expensive body generators. In the publication, we will give explanations about the efficiency of gas boilers, study them before going to the store.

What determines the economy

An ideal gas heating boiler must first effectively burn the main or liquefied gas, and then direct all the heat received to heat the coolant for the heating system. In reality, not everything is so smooth, and here's why:

1. For efficient combustion of fuel and obtaining the maximum amount of heat, gas and air must be mixed in clear proportions (approximately 1: 10). Not every heat generator can do this.
2. During the combustion of methane, carbon dioxide is released and plain water, which immediately evaporates, taking away part of the thermal energy of the burned fuel.
3. The heated combustion products a priori cannot transfer all the energy to the coolant, some of it will still fly out into the chimney. The value of this part depends on the design of the heating unit.

It turns out that one part of the energy contained in the fuel is lost during the combustion stage, and the other part is lost during heat transfer. The smaller these losses, the more rationally the energy of the fuel is used and the more economical the gas boiler for the house. The efficiency of the heater is characterized by its efficiency, indicated in the technical data sheet for the product. The higher this indicator, the more heat the heat generator directs to heat the coolant and consumes natural gas more economically.

The efficiency of modern gas boilers depends on their design and ranges from 85 to 96%. Higher performance metrics reported by salespeople thermal equipment, are not true.

Evaluation of the efficiency of different heaters

When choosing, the task is somewhat wider than just choosing the most economical gas boiler. It is important that it matches the conditions of your country house or apartments and went to the heating system. Solving the problem is impossible without understanding what types of heat generators exist and how they differ from each other. Now the market offers 3 types of gas-using units:

• atmospheric, with an open combustion chamber;
• pressurized (otherwise - turbocharged), with a closed combustion chamber;
• supercharged condensing.

The listed varieties are produced in execution. Only among aspirated can you find the so-called parapet (wall) models, with a side chimney that goes out horizontally through the wall. There are double-circuit modifications of boilers designed to provide hot water to 2-3 consumers in a private house.

Floor or wall mounting does not affect the power or efficiency of the gas boiler. Only the design and principle of operation of the heat generator matters, so each variety should be considered separately.

Units with an open combustion chamber

These gas boilers cannot be classified as the most economical, since their efficiency rarely exceeds 85%, and the temperature of the gases at the outlet into the pipe reaches 150 ° C. The reason lies in easy way combustion of fuel with free air supply from the room where the unit is located. With an excess of air in the air-fuel mixture, not the most Better conditions combustion, which negatively affects the efficiency of the heater. The high temperature of the combustion products indicates insufficiently efficient heat transfer and heat loss.

There is another point. Most burners installed in inexpensive atmospherics can operate in one mode. Simply put, to maintain the set temperature of the coolant, the burner periodically turns on and off. This is the simplest algorithm of work, but not the most economical. However, these boilers are very popular for the following reasons:

• the lowest price;
• independence from the presence of electricity in the house;
• simplicity and reliability of the design, the absence of electronics.

Note. Not all atmospheric boilers are non-volatile. There are many models from different manufacturers equipped with controls and powered by the mains. But from the presence of these funds, the efficiency of the thermal unit does not become higher.

For a private house with an open gravity-fed heating system, no the best option how to choose an atmospheric gas boiler that does not need electricity. Even despite the relatively low efficiency. Such systems exist in order to heat private houses in areas with unreliable power supply. No one will think about saving when, during a power outage, a high-tech boiler stops and the house starts to freeze.

Turbocharged heat generators

Closed combustion chamber and forced filing air, implemented in such units, unequivocally improve the conditions for burning both natural and liquefied gas. Unlike atmospherics, the following types of burners are used in pressurized heaters:

• two - and multi-stage;
• modulation.

The bottom line is that when the set coolant temperature is reached, such burners switch to the lowest stage of combustion intensity (first type) or smoothly reduce power to a minimum (second type). That is, the electronic control unit of the gas boiler independently regulates the power of the burner, depending on the heat load or the appearance of a request from the DHW system. Hence the higher efficiency of a pressurized double-circuit boiler - 90-92%.

Judging by the reviews on the forums, wall-mounted turbocharged heating units occupy the first position in the field individual heating apartments. But not at all because of the high efficiency, but thanks to the coaxial chimney, which goes out horizontally through the wall. This eliminates the need to arrange a traditional chimney or connect the boiler to a ventilation shaft, which is strictly prohibited by the rules.

Condensing boilers

In fact, these are the same turbocharged heat generators with a closed chamber, only with a higher efficiency - up to 96%. It is achieved due to the closed design of the heat exchanger surrounding the cylindrical burner on all sides. In this way, it is possible to return and use the heat of vaporization selected in the combustion process. The released water evaporates at a high temperature in the combustion zone, after which the steam from contact with the heat exchanger condenses and returns energy back.

A condensing gas boiler is an unequivocal answer to the question of which heat source is better to choose in terms of efficiency. Provided that your Vacation home is supplied with electricity without interruption or you have an alternative source - an uninterruptible power supply or an electric generator.

Like forced air heating units, condensing boilers cannot function without electricity.

Since these heat sources are high-tech, their price is quite high. This is the only significant drawback of heat generators; in terms of other indicators, they are beaten only by electrical installations with an efficiency of 99%. Judge for yourself: the flue gases leaving the condensing boiler have a temperature of no more than 70 ° C, which indicates the smallest losses and the best heat extraction in favor of the water heating system.

Which gas boiler is better to choose

This section is intended to link all previous reasoning to real life, because theory and practice are different things. Theoretically, everything is correct, the most economical gas boiler with the highest efficiency is condensing. But having learned how much this miracle of technology costs, not everyone will dare to buy it. And is there such a need?

Take the same gravity system, which does not need pumps, automation and electricity. It is not advisable to buy an expensive heat source for it, although a turbocharged or condensing heat generator will cope well with such a system. It will simply force the coolant to circulate forcibly from its own pump. The issue is the reliability of power supply and the decent price of equipment that will pay off no one knows when.

It is also not very reasonable to buy a condensing boiler for small house 100 sq. m area with any heating system. On such an area, you are unlikely to feel the economy compared to an inexpensive aspirated. You can see the real difference if country cottage over 300 sq. m, first heat with a simple boiler, and then change it to a condensing one.

Final Conclusion

When choosing a gas boiler, do not focus on efficiency, use common sense. You don’t have a chimney in your house - take a turbocharged heat generator, it’s bad with electricity - a non-volatile aspirated. If you have a cottage on 2-4 floors - definitely install a condensing boiler. Profitability is also achieved in other ways, for example, by simply insulating a building.

It is quite logical that every owner of a private house wants to save fuel that is spent on heating the home. This also applies to natural gas, which is constantly becoming more expensive. The first step towards savings can be taken at the heating design stage, that is, choosing the most economical floor-standing gas boilers.

Boiler efficiency principle

Ideally, the heating boiler must first efficiently burn liquefied or natural gas, and then redirect the resulting heat to heat the heat carrier. But in reality, everything does not always go so smoothly, and here are the reasons:

Thus, one part of the energy contained in the fuel is lost during the combustion stage, and the second part is lost during heat transfer. The lower these losses, the more productive the energy is spent and the gas boiler is more economical. The operating efficiency of the heater is expressed in its efficiency, which is indicated in the manufacturer's instructions. The higher this characteristic, the more thermal energy is directed to heating the coolant and gas is burned more economically.

efficiency of modern gas equipment depends on the design of the boiler and is in the range of 80−95%. More inflated power figures, which are indicated by manufacturers of thermal appliances, do not correspond to reality.

Choice of gas equipment

During the selection, the main task is much broader than simply determining which gas boiler is the most economical and reliable. It is necessary that the equipment corresponds to the conditions of a private house and is suitable for heating system. The solution to this problem requires an understanding of what types of heat generators are today and what is their difference from each other. At the moment, there are three types of gas-using equipment on the market:

• pressurized condensing boilers;
• pressurized (turbocharged) with a closed firebox;
• atmospheric with an open firebox.

The above types are made in wall and floor versions. Only in models of atmospheric boilers can you pick up wall-mounted (parapet) products with a side chimney that goes horizontally to the street through the wall. There are double-circuit varieties of boilers used as a boiler to provide hot water.

The execution in the wall or floor version does not affect the power and practicality of the boiler. Of primary importance is only the principle of operation and design of the heat generator.

Atmospheric aggregates

This gas equipment is not among the most economical devices, since the efficiency does not often exceed 83%, and the temperature of the burnt gas at the outlet to the pipe is about 160 ° C. The reason is the usual variant of fuel combustion with free oxygen supply from the boiler room. During an excessive amount of air in the air-fuel mixture, not the most favorable conditions for fuel combustion begin to be created, which negatively affects the efficiency of the heater. The increased temperature of the combustion products indicates inefficient heat transfer and loss of thermal energy.

There is another important point. Many burners that are installed in cheap atmospheric boilers, can only work in one mode. In other words, to maintain the temperature of the heat carrier, the burner is regularly switched on and off. This is the simplest principle of operation, but not the most economical. But one way or another, this equipment is very popular for several reasons:

• reliability and simplicity of the device;
• lack of electrical components;
• independence from the availability of electricity;
• low cost.

Not all atmospheric equipment is non-volatile. Exists a large number of models of various manufacturers, which are equipped with automation and control devices that consume electricity. However, their presence does not increase the efficiency of boiler equipment.

To heat a house with an open firebox that works in a natural way, it is best to install an atmospheric boiler that does not require electricity. Even despite the relatively low power of this equipment. These units are designed to heat buildings in areas with unstable electricity supply. In this case, we are not talking about savings if, during a power outage, the boiler stops working and the rooms in the house begin to cool.

Pressurized heat generators

The closed furnace and forced air circulation, which is implemented in these devices, improve the conditions for burning liquefied and natural gas. In turbocharged boilers, unlike atmospheric ones, the following types of burners are used:

• modulation;
• two- and multi-stage.

The point is that when the predetermined temperature of the heat carrier is reached, these burners switch to the lowest level of fuel combustion activity (first type) or smoothly reduce the intensity of the combustion process to a minimum (second type). That is, automated system The boiler control itself controls the burner power, taking into account the heat load or a signal from the DHW operation. It is for this reason that the efficiency of turbocharged boilers is 91-95%.

According to reviews, turbocharged wall-mounted gas boilers are in first place for individual heating of apartments. However, not at all because of the increased efficiency, but due to the coaxial chimney, which is horizontally led out into the street through the wall. This allows not to equip the chimney, and also not to connect the heater to the ventilation shaft, which is strictly prohibited by SNiP.

Condensing devices

By by and large, these are the same pressurized heat generators with a closed firebox, but with increased efficiency - up to 97%. This is achieved due to the closed design of the heat exchanger, which surrounds the cylindrical burner around the entire perimeter. Yes, you can return thermal energy vaporization lost during combustion. The resulting water begins to evaporate at an elevated temperature during combustion, then the steam after contact with the heat exchanger condenses and transfers heat energy back.

Condensing gas equipment is the most economical equipment for heating a private house. Provided that electricity is supplied in the area without interruption or there is an alternative power source - diesel or petrol generator. Like turbocharged heating boilers, condensing equipment cannot work without electricity.

Since these devices are more technologically advanced, their cost is quite high. This can be attributed to the only significant drawback, according to other characteristics, only electrical installations with an efficiency of 98% are more economical.

Installation Benefits

Today, gas heating equipment is widely used in country cottages and in private homes. Ease of operation, safety and convenience are the main reasons for the popularity gas heating. Also, boilers have a number of other advantages:

The heat exchanger of floor heating equipment is made of high-quality and durable cast iron, which provides the best thermal insulation, and modern burners make it possible to operate the device simultaneously on both liquefied and natural gas.

Besides, floor standing boilers clearly react to the negative effects of the external environment, their body is covered with special anti-corrosion compounds that prevent metal oxidation.

Main disadvantages

However, a gas heating boiler also has certain disadvantages. The main ones are the following:

Moreover, despite the high security gas installations, their work still needs to be monitored, since even small interruptions disrupt the normal production cycle.

Theoretically, the most practical and economical gas boilers for heating a private house with maximum efficiency are condensing boilers. However, having learned the cost of this equipment, not any homeowner will dare to purchase it. Therefore, you can buy a conventional gravity system that does not require electricity, automation and a pump.

It is also not very cost-effective to purchase condensing equipment for a small building of less than 150 square meters. m for any type of heating. On this area, the savings will not be tangible, in contrast to the purchase of an inexpensive atmospheric boiler.

When choosing gas equipment, it is not necessary to focus only on efficiency, it is also necessary to be guided by considerations of necessity and expediency. If there is no chimney pipe in the house, it is best to choose a pressurized heat generator, when there are power outages - a non-volatile atmospheric boiler. If the cottage is more than two floors, it is advisable to install a condensing unit. It is possible to make an economical boiler in other ways, for example, by the usual insulation of a house.

Modern gas boilers are efficient equipment that, in terms of efficiency, lose only electric generators. But the level of efficiency depends on the presence of high-tech elements in their mechanism, and, accordingly, on the cost of the device as a whole. The same condensing units are as economical as they are expensive. At the same time, an ordinary inexpensive boiler can fully satisfy the needs of the homeowner.

Heating private houses with gas is the most cost-effective in our country. Therefore, one of the main elements of the heating system is a gas boiler. The best option for heating living space with a total area of ​​80-900 sq. m will be the installation of an underfloor heat source. On the market, the consumer is offered models of various domestic and foreign manufacturers. They differ not only in price, but also in important technical parameters.

• According to functionality, all gas boilers can be divided into single-circuit and double-circuit ones. The former are used exclusively for space heating. Models with two circuits are able not only to provide heat to the heating system, but also to heat water for the kitchen and bathroom. Despite a number of advantages of boilers with two circuits, experts do not recommend installing them in homes where bathrooms and kitchens are far from the boiler room.
• Gas boilers differ in the way they are controlled. Mechanical models are easier to maintain and repair, and electronic control allows you to achieve maximum comfort with complete non-interference in the work of residents of the house.
• Structurally, condensing and convection boilers are distinguished. In convection models, the coolant is heated solely due to the heat released during gas combustion. With this classical scheme for obtaining thermal energy, large losses occur. Modern condensing boilers have a much higher coefficient of performance (COP). In them, in addition to energy from the combustion of gas, heat is generated from water vapor, which are released during the combustion process. Water vapor is condensed in an additional heat exchanger, which ultimately allows saving up to 20% of hydrocarbon feedstock.

We offer you a selection of the best floor-mounted gas boilers, which is compiled on the basis of technical characteristics, cost, consumer reviews and expert opinions.

The best gas boilers for heating an area up to 100-150 sq. m.

Ideally, the power indicator of the unit should be determined on the basis of thermal imaging diagnostics, but in practice it is calculated from the average value, based on the calculation of 1–1.5 kW for each square meter. It is not worth choosing a gas boiler with overestimated parameters - a low load level leads to a decrease in efficiency and increased wear of mechanical parts. This category includes equipment suitable for operation in small, up to 100-150 sq. m., residential and non-residential buildings.

3 ATON Atmo 10EBM

The best choice for residents of the villages. Most compact dimensions
Country Ukraine
Average price: 17,600 rubles.
Rating (2019): 4.2

In the CIS countries, gas is supplied at a lower pressure than in Europe, moreover, due to the high degree of wear on the mains, accidents often occur. With a critical pressure drop, foreign equipment, designed for an indicator of 20 mbar, starts to work at a third of its capabilities or stops altogether. That is why residents of small settlements, where this problem is most relevant, prefer to buy inexpensive boilers adapted to local gas supply conditions. These include ATON Atmo 10EBM, ready to heat a house with the declared power even at 13 mbar.

More importantly, the device does not require connection to the mains and operates under conditions of natural circulation of the coolant in the circuit due to the difference in the density of cold and hot water. Model 10EBM is double-circuit and provides instantaneous heating of water up to 45 °, which makes it suitable for sanitary purposes. The unit belongs to the economy class, so from the elements of safety and comfort it provides only a non-volatile gas sensor, a draft sensor and a built-in thermometer. It is also distinguished by small dimensions (760x380x385 mm), efficiency (fuel consumption is 1.2 m 3 / hour) and attractive appearance.

2 Lemax Premium-10

Minimum fuel consumption. Italian components
Country Russia
Average price: 16,500 rubles.
Rating (2019): 4.5

The Taganrog company Lemax has been engaged in floor gas boilers for over 20 years, and since March 2018 it has launched another plant for the production of heating radiators. Her products attracted consumer attention affordable price and cost savings. Thus, a single-circuit unit from the Premium series with a heat output of 10 kW consumes on average 0.6 m 3 /h of fuel, which is approximately 30–50% better than its counterparts. Nevertheless, reviews of the first products were very restrained, many complained about poor-quality automation and gas burner units (GGU).

In the design of Lemax gas boilers of a modern design, European-made components are used - GGU from the well-known Italian concern SIT and the Polidoro microtorch burner. The same equipment is installed by popular foreign manufacturers eg Ariston. After the reconstruction, the opinion of buyers immediately improved, because for little money they were offered a non-volatile and economical device with auto-ignition, protection against overheating, blowing and soot formation, as well as with a 3-year warranty and a 14-year service life.

1 Kiturami STSG 13 GAS

High level of security. The most convenient to use
Country: South Korea
Average price: 41,000 rubles.
Rating (2019): 5.0

All gas boilers of the STSG line are considered the best in terms of reliability and safety, and the 13th, the youngest model, is no exception. The maximum area on which it can provide efficient heating, according to the documents is 150 sq. m., however, experts recommend leaving a margin of safety of 10-20%. The stainless steel body, welded using the special Kiturami technology, is designed for long-term (at least 10 years) operation in a humid oceanic climate. The device is double-circuit, equipped with separate heat exchangers and is capable of heating water in the DHW circuit up to 80 °, and the coolant - up to 85.

The unit is controlled automatically, the kit includes a remote thermostat that can be installed both nearby and in any room, for example, in a nursery. Accordingly, the boiler can be configured in one of two modes with reading the temperature of either the coolant or the air in the room. Among other functions that allow you to set the optimal operating mode for a day or a week without human intervention - "Delayed start", "Freeze protection", "Intervals", etc. Safe operation provides an extended self-diagnosis function, and a closed combustion chamber and forced draft allow you to install a gas boiler indoors without expensive vertical chimney equipment.

The best gas boilers for heating an area up to 200-300 sq. m.

With an increase in the heated space, the problem of saving gas fuel becomes more acute. To ensure low heating costs, when choosing a boiler, you need to pay attention not only to power, but also to its efficiency. For some models from this rating (they work on the condensation principle), it exceeds 100%. Such data were obtained according to domestic calculation standards, and according to the European methodology, their real efficiency is approximately 95%. Accordingly, in order to get an idea of ​​the real efficiency of simple floor-standing gas boilers, the calculated efficiency should be reduced by 12–15%.

5 Teplodar Kupper OK 20

Ability to work on several types of fuel. Built-in heater
Country Russia
Average price: 23,400 rubles.
Rating (2019): 4.2

Many Russian settlements are waiting for the gas pipeline to be connected, and the only heating alternative available to its residents for some time is the installation of a heating system based on a solid fuel boiler. The Teplodar company has developed a universal design - the Kupper OK 20 model, capable of working both on wood, pellets and coal, and on natural gas. It is possible to transfer the unit from one type of fuel to another using the optional Teplodar burners. Thus, the same boiler can be used as the main source of heat on solid fuel, or as a backup - in areas with unreliable gas supply.

The basic kit includes a block of 3 heating elements with a power of 2 kW. It is impossible to heat the house with them on an ongoing basis; their task is to maintain the coolant in the event of a complete burnout of the fuel or in an emergency. Another feature of the device is the possibility of retrofitting an external control and a capacitive hydraulic separator. These elements perfectly balance the heating system, improve controllability to the level of mono-fuel boilers and extend the service life, but at the same time increase the cost of boiler equipment by more than 2 times.

4 Protherm Bear 40 KLOM

The most popular gas boiler
Country: Slovakia
Average price: 60 350 rubles.
Rating (2019): 4.5

The most popular floor gas boiler today is the representative of Slovakia Protherm Bear 40 KLOM. This is a single-loop model of the convection type. His thermal power reaches 35 kW at an efficiency of 90%. One of the reasons for the high popularity was the possibility of using liquefied gas. The device is equipped with such modern options as protection against freezing and overheating, self-diagnosis, constant control over the combustion process, flame modulation.

Consumers flatter about the reliability, ease of operation, compactness and durability of the device. With all these qualities of a "smart boiler", it remains the most affordable for domestic consumers.

3 Baxi SLIM 2.300i

The best gas boiler with built-in boiler
Country: Italy
Average price: 107,500 rubles.
Rating (2019): 4.7

The Italian gas boiler Baxi SLIM 2.300 i has a built-in boiler with a capacity of 50 liters. Thanks to this design, there will always be a sufficient supply of hot water in the house. The security system includes closed cell combustion, protection against overheating and freezing, from blocking the pump, there is a draft sensor. The boiler can also be operated from liquefied gas. Additionally, it can be equipped with a timer and remote control. The double-circuit convection boiler is adapted to Russian conditions.

Consumers note the versatility of the boiler, its efficiency, ease of installation, the ability to work on liquefied gas. The main disadvantage is the high cost.

2 De Dietrich DTG X 23 N

Optimal economic performance. Cast iron heat exchanger
Country: France
Average price: 76,000 rubles.
Rating (2019): 4.8

The oldest brand in Europe, De Ditrisch, is 334 years old. During this time, it developed into an industrial empire for the production of automobile, railway and heating equipment. Gas boilers of this brand are invariably associated by consumers with reliability, unpretentiousness in operation, as well as minimal energy consumption: for heating a house of 200 sq. m model DTG X 23 N will need only 2.7 m 3 / hour of natural gas and about 2.0 - liquefied. Its other advantages include simplicity of design, low noise level during operation and simple maintenance.

The heat exchanger is made of high-quality eutectic cast iron (the company is known as a global metallurgical manufacturer), has an optimal configuration of heat transfer fins, due to which it is distinguished by high efficiency and corrosion resistance. Due to the plasticity of the walls of the heat exchanger, there is no need to control the temperature in the return circuit, and the boiler can be used for heating with underfloor heating. For safety reasons, a draft sensor and an overheating protection system are provided, and from the comfort elements there is an auto-ignition and an on indicator.

1 Vaillant ecoVIT VKK INT 366

Best efficiency
Country: Germany
Average price: 144,500 rubles.
Rating (2019): 4.9

The gas boiler from Germany Vaillant ecoVIT VKK INT 366 has the highest efficiency, which is 109%! At the same time, the device produces 34 kW of energy, which allows you to heat a house up to 340 square meters. The German specialists achieved the maximum result from gas combustion through the use of a modulating burner, flame control, conservation of latent heat of condensation, a multi-sensor control system, an information and analytical center, electronic ignition, etc.

Consumers highly appreciated such qualities of this single-circuit boiler as functionality, reliability, stylish appearance. It is worth noting that electronics are very sensitive to voltage drops in the mains. Therefore, it is necessary to additionally install a voltage stabilizer in the house.

The best high power gas boilers

AT apartment buildings, hotels and large (from 400 to 600 sq.m.) cottages, when there is a need to heat not only room space, but also a swimming pool, a gym, a winter garden and other heat-intensive facilities, it is most rational to install a heating system based on several single-circuit or double-circuit gas boilers with a capacity of at least 50–60 kW. Special attention when choosing, one should pay attention to the range of automatic settings, the capabilities of control systems and the timely adjustment of the operating mode.

4 Leberg Eco Line FBS 60G

original heat exchanger. Excellent efficiency and safety performance
Country: Norway (produced in Russia)
Average price: 46,900 rubles.
Rating (2019): 4.3

The heat exchanger of the gas boiler of the Eco Line series from the Norwegian company Leberg has an original patented design. It is made of cold rolled steel 3.5 mm thick. Above the combustion chamber, surrounded by a water jacket, tubes with a diameter of 40 mm are located in a checkerboard pattern at an angle to circulate the coolant. To increase energy efficiency, the heat exchanger is enclosed in 2 heat-insulating layers of mineral wool and heat reflective foil. Thus, an efficiency of 90% was ensured and high level operational safety.

The single-circuit device is the simplest and most inexpensive of the entire range of high-power household units, while equipped with components proven by many years of practice: Polidoro or Bray burners, Sit automation, built-in Imit thermometer. Adjustment and maintenance of the set parameters is provided by a built-in thermostat controlled by a rotary knob. The design is non-volatile and is in demand in regions with problematic power supply. The consumption of main gas is relatively small (6 m 3 / hour), if necessary, you can transfer the gas boiler to work with liquefied fuel.

3 Navien GST-60KN

The best smoke extraction system. Built-in frost and surge protection
Country: South Korea
Average price: 92,000 rubles.
Rating (2019): 4.8

Floor-standing boilers of this brand are double-circuit and are able to provide a sufficient amount (from 20 to 34 l / min., Depending on the temperature) of hot water, including in the absence of a need for heating. The unit is fully adapted to Russian operating conditions:

• maintains stable operation at an inlet pressure of 4 mbar gas and 0.3 bar water;
• protected from power surges within ± 30% by a built-in chip;
• prevents freezing of the system by automatically turning on the burner and starting the circulation pump;
• equipped with a fan and allows smoke to be removed both into the chimney and through the wall.

You can set the comfort heating mode using the included remote control with built-in temperature sensor and LCD screen. This is especially convenient when the boiler room is located in the basement of the house. The correct operation is monitored by the self-diagnostic system, which, in the event of critical sensor readings, blocks the operation of the boiler and displays an error code on the display. Wide functionality, high-quality components, excellent technical characteristics, chic design and international certification - it is no coincidence that Navien equipment is considered one of the best.

2 Buderus Logano G234-60

Condensing principle of operation. Service life over 20 years
Country: Germany (produced in South Korea)
Average price: 144,000 rubles.
Rating (2019): 4.8

The main qualities of a floor gas boiler Buderus Logano G234-60 - stability and efficiency of work. They receive additional energy in the process of forced condensation of water vapor generated during combustion, and reduce energy consumption by up to 30%. Significant savings are also provided by fully automatic operation with electric ignition, which does not require additional gas consumption, 80 mm thick thermal insulation, which reduces heat losses to a minimum, and continuously adjustable boiler water temperature.

To meet all needs, optional expansion of the configuration with Logamatic automatic control systems and Logalux water heaters is possible. Additional noise suppression measures are not required. Don't worry about emission harmful substances– the appliance has been awarded the Blue Angel eco-label by the Federal Ministry of environment Germany. To summarize, it is difficult to find a floor boiler that is more perfect and functional than Buderus.

1 ACV HeatMaster 70TC

The most multifunctional
Country: Belgium
Average price: 740,000 rubles.
Rating (2019): 4.9

The Belgian boiler ACV HeatMaster 70 TC, having the maximum configuration, has the highest cost. This double-circuit condensing unit with a power of 68 kW has the highest efficiency (109%). Due to the maximum absorption of heat in heating and hot water modes, the model is recognized by experts as the best in the world. When creating a gas boiler, the manufacturer has introduced a number of innovative approaches. These include tank-in-tank technology, a modulating pre-mix burner, and a weather-compensated automatic safety system.

Those owners of private houses who could afford the installation of such a boiler note the incredible efficiency of work, the absence of noise during combustion, high performance and complete safety.