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 space heating with total area 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.
- By functionality, you can divide everything gas boilers for single and dual circuits. 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. Much higher ratio useful action(efficiency) have modern condensing boilers. 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 - low level load 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 density between 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, for example, 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 square meters. 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 is ensured by the advanced self-diagnosis function, and the closed combustion chamber and forced draft allow 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
A lot of 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 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 Medved 40 KLOM. This is a single-loop model of the convection type. Its thermal power reaches 35 kW with 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 an adequate supply of hot water in the house. The security system includes a closed combustion chamber, 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 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 characterized 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 managed to achieve 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
V apartment buildings, hotels and large (from 400 to 600 sq.m.) cottages, when there is a need to heat not only the room space, but also the pool, gym, 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. Particular attention should be paid to the range automatic settings, the capabilities of control systems and timely adjustment of the operating mode.
4 Leberg Eco Line FBS 60G
original heat exchanger. Excellent efficiency and safety performance
The 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% and a high level of operational safety were ensured.
The single-circuit device is the simplest and most inexpensive of the entire range of high-power household units, while it is 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 a comfortable 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 specifications, 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
The country: Germany (produced in South Korea)
Average price: 144,000 rubles.
Rating (2019): 4.8
The main qualities of the floor gas boiler Buderus Logano G234-60 are stability and efficiency. 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 expense gas, thermal insulation with a thickness of 80 mm, which reduces heat loss 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 German Federal Environment Ministry. 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.
The main task of a gas boiler is to produce enough heat for home heating, and if the construction double-circuit- same for hot water supply(DHW).
But, choosing a boiler, an attentive owner of the house will definitely look at how much energy and fuel the unit consumes.
but energy costs- not the only thing that characterizes efficiency.
What parameters affect the efficiency of gas boilers
An important role in the efficiency of gas boilers is played by:
- boiler type;
- materials used;
- working conditions.
Devices can be volatile or autonomous.
TO first in most cases, systems with a closed combustion chamber with forced air injection and removal are used, since they involve elements that require power supply.
Thanks to compact size among appliances with a closed combustion chamber, there are many wall-mounted gas boilers.
Standalone devices are open type, for which it is quite correct organized ventilation in room. They are more economical first, although they have a more complex device and large dimensions, therefore they are often performed in outdoor option.
From the point of view of the design of the gas boiler itself, its efficiency can be due to materials used. For example, heat exchangers are made of copper, cast iron or stainless steel.
The highest heat transfer is observed in copper and cast iron heat exchangers, which allows you to consume less fuel. In addition to materials, costs also depend on the technology of the device.
For example, there is condensing boilers, in which additional heat creates steam. They cost more than common convection ones, but they spend less resources on heat generation.
Special attention should be paid operating conditions of gas boilers. If the house is not properly prepared for the operation of heating appliances, if the volume of hot water supply is not calculated, the cost of operating the boiler can increase significantly, and the equipment itself will fail faster.
Important! To increase the efficiency of the boiler, it is necessary reduce heat loss in the House. gaps in doors and window openings, as well as under the roof, through which heat escapes, must be tightly sealed.
Floor or wall
After preparing the room for the installation of heating equipment, it is necessary to decide on choosing its category. Gas boilers are wall and floor. Here we will talk about wall models, as the most versatile in terms of ease of installation.
Rating of the most economical models on natural or liquefied gas
Oasis BM 16
A convection-type gas boiler made in China can only close the efficiency rating, since its power consumption is 95 W— significantly exceeds the output — 16 kW. This is enough to heat a house with an area over 150 sq. m. and will require its careful preparation in the form of sealing gaps in doorways, window openings and under the roof.
Photo 1. Wall-mounted gas boiler model BM 16, copper bithermic heat exchanger, manufacturer - "Oasis", China.
The model has: bithermic heat exchanger, closed combustion chamber, coolant temperature controller. Oasis BM 16 runs on both natural and liquefied gas. Capacity of the DHW circuit at 25°C is 8 liters per minute. The efficiency is 90% . To save fuel consumption and achieve a comfortable temperature, a thermostat is connected to the boiler.
Navien Deluxe 24K
This convection type unit is made in South Korea. It is wall-mounted and into two circuits.
Although the power ratio of the gas boiler 150W input and 24.00kW output and puts it in sixth place it is worth noting its reliability.
The gas boiler model uses stainless steel heat exchangers, which are resistant to mechanical stress.
The device has a closed combustion chamber, which involves the installation of a coaxial chimney. The efficiency of the unit is equal to 90.5%. Gas boiler Navien Deluxe 24K is able to provide heating in the area over 200 sq. m. and DHW performance 9.9 l. in min. at 35°C.
Max Flow natural gas for the operation of the unit is 2.58 cu. m., and liquefied 2.15 kg per hour. The use of a thermostat can significantly increase the savings in heating costs.
You will also be interested in:
Bosch Gas 6000 W WBN 6000 24 C
Wall mounted gas boiler with two circuits of convection type produced in Germany.
Bosch Gaz 6000 W WBN 6000 24 C consumes 150 W and gives the maximum 24 kW which provides him fifth place in the ranking.
This capacity of the gas boiler is enough to heat the territory over 200 square meters.
The advantages of the model in terms of performance are a copper primary heat exchanger and a closed-type combustion chamber with a coaxial chimney. Thanks to them, the house always has not only heat, but also hot water, the performance of which is equal to 11.4 l per minute at 30°C. The efficiency of the device is 93.2%.
At a temperature 35°C natural gas consumption is 2.8 cu. m. per hour, and liquefied - 2 kg per hour. To increase the savings in gas consumption allows the connection of a thermostat to the gas boiler.
Leberg Flamme 24 ASD
Gas boiler for two circuits convection type wall mount from a Norwegian manufacturer provide efficiency 92.3%. Unit consumes 120 watts and produces 24.00 kW.
Borrow fourth place in terms of economy, it is helped by an efficient bithermic heat exchanger and the possibility of smooth power control depending on the air temperature in a room with an area of over 200 sq. m.
The device has a closed combustion chamber, which involves the use of a coaxial chimney. DHW circuit capacity at temperature 30 °C - 10 l/min. Natural gas is consumed maximum 2.37 cu. m. per hour, and liquefied - 2.09 kg per hour. Connecting a thermostat increases the efficiency of a gas heating boiler.
Mora Top Meteor PK24KT
The Czech unit belongs to the convection type, has two circuits and attached to the wall. With the ratio of consumed - 110 W- and day off - 24.00 kW– power Mora Top Meteor PK24KT takes third place in terms of economy.
The model allows you to provide heat and hot water room area over 200 sq. m.
The boiler uses a closed combustion chamber, a coaxial chimney and a copper heat exchanger. The efficiency of the unit reaches 90%.
At temperature indicator at 30 °C 11.2 l per minute
During the operation of the unit, it consumes 2.67 cu. m. of natural gas per hour. Connecting a thermostat to a gas boiler allows you to make the temperature in the house as comfortable as possible and increase fuel economy.
Reliable Ariston Clas B 24 FF
The Italian gas wall-mounted convection type boiler has two circuits: for heating and hot water supply. Its output power is 25.80 kW at power consumption 120.0 W. This ratio of indicators is not the only thing that distinguishes this model from a number of others.
Photo 2. Gas boiler model Clas B 24 FF convection, with a turbocharged chimney, manufacturer - "Ariston", Italy.
She has a tangible DHW performance: at 35 °C - 15.7 l/min. The unit is equipped with a closed combustion chamber, which involves a coaxial chimney. It uses a copper heat exchanger as the primary one. Natural gas consumption is 2.86 cu. m., and liquefied 2.13 kg per hour. The efficiency of the device - 93,8%
Bosch gaz 4000 W ZWA 24 2 A
The double-circuit wall-mounted convection gas boiler of the German brand has the lowest power consumption 90 W. In this case, the output is 24.00 kW. The device has a closed combustion chamber, which implies a coaxial chimney.
Efficient heat transfer is facilitated by a bithermic heat exchanger. The received power is enough for heating over 200 sq. m.
The Bosch gaz 4000 W ZWA 24 2 A is highly efficient 96% . At a temperature at 30 °C hot water flow reaches 11.4 l per minute.
The consumption of natural gas in the boiler is 2.92 cu. m. per hour, and liquefied 1.93 kg per hour. It is possible to effectively save gas and electricity using the device due to smooth power control, as well as by connecting a thermostat.
Useful video
Check out the video, which tells how the designs of truly economical gas boilers are arranged.
How to improve the efficiency of heating a private house
Thanks to a wide selection of units, it is easy to choose a device suitable for specific conditions. At the same time, it is possible to further reduce the operating costs of the boiler, if insulate the room, reducing heat loss in it, choose a device taking into account the frequency of its inclusion ( all year round or only in cold weather) and correctly calculate the characteristics of the device.
This refers to the need to add to the indicators of the output power of the gas boiler 20% , as it is not recommended to operate it at maximum power. That is for heating 100 sq. m. of premises unit is the best choice power of 120 kW. With such a thoughtful approach, your own forethought, along with the choice of quality goods, will ensure not only maximum comfort in the house, but also a minimum of costs.
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Heating a house is one of the basic tasks of life support.
Unlike European residential premises, where the operating conditions of the heating system are easier, in Russia it is necessary to have a powerful and efficient heating circuit.
Since the capabilities of the system are determined by the characteristics of the boiler, working in difficult and harsh conditions requires a special approach to the development and production of heat engineering.
Most domestic manufacturers follow this path, considering first of all reliability and resistance to external loads.
Let's consider this question more carefully.
Russian manufacturers produce an almost complete list of designs of gas heating boilers. In their arsenal there are a lot of varieties and options.
By feature set:
- single-loop. They are intended only for heating the coolant and supplying it to the heating system;
- double-circuit. In parallel with the performance of the basic function, these units are able to prepare hot water for domestic needs.
According to the installation method:
- wall. They are installed in a hinged way on solid (bearing) walls or special structures - ramps. The specifics of installation require restrictions on weight and dimensions from boilers, so the power of wall-mounted boilers is relatively low;
- floor. They are installed directly on the floor, so there are no weight restrictions. This allows you to use powerful and massive knots, details. The power of floor units is the highest. In addition, they can be connected in a cascade, obtaining total indicators close to those of serious thermal power plants.
By type of combustion chamber (burner):
- atmospheric, or open. Air is taken directly from the room, and smoke is removed naturally through a traditional chimney;
- turbocharged or closed. For combustion, air is supplied by a special fan. An overpressure develops in the combustion chamber, forcing the smoke out through the horizontal coaxial chimney. Fresh air enters the boiler through the outer pipe, and combustion products are removed from the boiler through the inner pipe.
By way of power supply:
- volatile. As a rule, these are boilers that are more or less exact copies of European models. They need to be connected to a power supply to work.
- non-volatile. They work exclusively on a mechanical principle, which makes them the most preferable in conditions of unstable power supply. The disadvantages are the use of natural draft and coolant circulation, which do not allow developing a given power. However, these problems are easily solved by connecting external devices, and the ability to provide continuous operation in all conditions remains.
Russian manufacturers also produce parapet boilers. They are able to heat rooms without a radiator system, distributing thermal energy using the convection method.
Such designs are convenient for heating apartments and other premises of a relatively small area..
NOTE!
The most popular and promising are non-volatile floor standing boilers. They have high power, are able to provide basic functions (heating and hot water), do not have extra nodes. This makes the units reliable and resistant to any external influences.
Russian brands
Floor gas boilers are one of the main directions in the work of all Russian manufacturers.
Let's look at some of them:
- Conord. The parent company is located in Rostov-on-Don. Gas floor boilers are available in single and double circuit versions. In total, 4 series are offered with power from 8 to 30 kW, the difference between which is the number of circuits and the type of automation;
- Signal. The plant is located in Engels, Saratov region. Currently, two series of floor-standing non-volatile boilers are being manufactured - S-Term and Comfort. The power of the boilers ranges from 7 to 150 kW, which allows you to choose the right model for any premises and conditions. There are single and double circuit models;
- Siberia. Products of the LLC Rostovgazoapparat. This is a group of floor-standing non-volatile units, presented in three series - Economy, Comfort and Premium. Power range - from 11 to 50 kW. There are single and double circuit models;
- ZhMZ. These are gas boilers manufactured by the Zhukovsky Machine-Building Plant. The range includes single- and double-circuit models of non-volatile floor-standing units with a capacity of 11 to 68 kW. They are produced in three series - Economy, Universal and Comfort, differing from each other in the type of automation and the shape of the case;
- Lemax. Are made in Taganrog. The plant's products are wall and floor models with one or two circuits. There are three series - Premium, Premier and Prime. The power of the units is from 10 to 35 kW.
Most boilers are non-volatile, which is determined by difficult working conditions, dilapidated power supply networks or total absence connections in remote villages.
This approach is fully justified - in frost, a sudden power outage will immediately stop the heating system, and if the power supply is not restored in a matter of minutes, defrosting of pipelines is inevitable.
The only solution would be an emergency drain of the coolant, but this measure is not always possible.
Therefore, the presence of heating boilers independent of external conditions is a very useful solution for the domestic user.
Why is the Lemax brand considered the best based on user reviews?
- a wide variety of design options, functionality and parameters;
- low fuel consumption. In combination with high efficiency, this allows you to get big savings and increase the life of the boiler;
- the ratio of price and quality of Lemax boilers is considered the most successful;
- the durability and reliability of the units are highly appreciated by both specialists and ordinary users.
Due to these features, Lemax boilers are usually referred to as leaders in domestic heat engineering. However, it should not be assumed that all other products of Russian manufacturers are significantly inferior to these units.
In terms of design and performance, the developments of domestic engineers are approximately on the same level. The main advantage is getting rid of redundant add-ons that few people use.
The fewer unnecessary components and parts, the more reliable design and easier to repair. This equally applies to all units manufactured in Russia. Lemax boilers are presented in a larger assortment, but are not so superior to alternative options.
The prices and capabilities of domestic floor-standing gas boilers are at the same level, which makes the products of domestic manufacturers affordable and in demand.
Rating TOP-7 floor-standing gas boilers of Russian production
Consider the most successful models of domestic-made floor gas boilers, which, according to survey results, are considered leaders among such devices:
Lemax Premium-20
Floor gas boiler, 20 kW. It is suitable for rooms of 180-200 m2. The unit is non-volatile, so the installation of the heating circuit should be done with a slope upwards from the boiler.
The boiler is single-circuit, with an atmospheric type combustion chamber. Needs connection to a traditional chimney.
Main technical characteristics:
- gas consumption - 2.4 m3/hour;
- dimensions - 556x961x470 mm;
- weight - 78 kg.
For maximum efficiency, many owners connect an external circulation pump and a turbo nozzle.
Lemax Premium-12.5
A unit designed for heating relatively small house area of 125 m2. The design of the Premium series boilers has a steel heat exchanger 3 mm thick.
The unit is single-circuit, with an open type combustion chamber.
Boiler parameters:
- coolant temperature (max) - 90°;
- coolant pressure (max) - 3 bar;
- gas consumption - 1.5 m3/hour;
- dimensions - 416x744x491 mm;
- weight - 55 kg.
It is possible to connect a turbo nozzle and an external circulation pump, but installation of the system piping under a slope is mandatory in any case.
Lemax Leader-25
The power of this boiler is 25 kW and allows you to heat a house with an area of 250 m2. A feature of the boilers of the "Leader" line is cast iron heat exchanger, providing a smooth and smooth change of heating modes.
Boilers are able to develop increased pressure in the system, have several degrees of protection against overheating, flameout and other undesirable phenomena.
Unit parameters:
- coolant temperature (max) - 95°;
- coolant pressure (max) - 4 bar;
- gas consumption - 3 m3/hour;
- dimensions - 515x856x515 mm;
- weight - 115 kg.
With all its capabilities, boilers of the Leader series are non-volatile. They will not stop working in the event of an accident on electrical communications.
This allows the owner not to worry about heating in the winter.
Lemax Premium-30N
Non-volatile floor gas convection type boiler.
Provides only a basic function - heats the coolant for the heating circuit. The power of the device, designed to serve an area of 300 m2, is 30 kW.
The main indicators of the unit:
- coolant temperature (max) - 90°;
- coolant pressure (max) - 3 bar;
- gas consumption - 3.5 m3/hour;
- dimensions - 470x961x556 mm;
- weight - 83 kg.
The independence of the boiler from the availability of power supply allows it to be used in remote villages or areas with dilapidated unreliable power networks.
ZhMZ AOGV-17.4-3 Comfort N
Double-circuit gas boiler manufactured by the Zhukovsky Mechanical Plant. Unit power 17 kW, designed for heating 140 m2.
The main fuel is natural gas, but conversion to liquefied fuel is possible subject to the replacement of nozzles. The boiler provides home heating and hot water supply.
Its characteristics:
- coolant temperature (max) - 90°;
- coolant pressure (max) - 1 bar;
- DHW temperature (max) - 80°;
- gas consumption - 1.87 m3/hour;
- dimensions - 420x1050x480 mm;
- weight - 57 kg.
The units of the Zhukovsky plant are distinguished by a specific body shape, resembling a cylinder with three legs X.
However, this does not impair the operational capabilities of the boilers, and the low fuel consumption makes them very attractive to buyers.
Lemax Premium-25
Single-circuit gas boiler with atmospheric combustion chamber. Designed for space heating up to 250 m2, as evidenced by the power of 25 kW.
The floor-standing non-volatile unit has the following parameters:
- coolant temperature (max) - 90°;
- coolant pressure (max) - 3 bar;
- gas consumption - 3 m3/hour;
- dimensions - 470x961x556 mm;
- weight - 83 kg.
The design of the boiler differs little from the design of other Lemax units. It is possible to connect an external drive, which allows you to provide rooms with hot water.
Lemax Premium-30B
Floor gas double-circuit copper. It does not need to be connected to the power supply network.
Able to heat rooms up to 300 m2, at the same time provides hot water for domestic needs.
- coolant temperature (max) - 90°;
- DHW temperature (max) - 80°;
- coolant pressure (max) - 3 bar;
- gas consumption - 3.5 m3/hour;
- dimensions - 556x961x470 mm;
- weight - 88 kg.
This boiler is a good choice heating installation for a two-story house. With high capabilities, it is very economical, which increases the demand and demand among users.
NOTE!
All boilers are guaranteed for 3 years.
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Home heating systems using gas boilers as a heat source are becoming common and widespread.
Often, homeowners refuse the services of centralized networks in favor of autonomous systems.
They prefer to independently regulate the heating mode and the timing of the start or end of the heating season.
The set of functions of modern gas boilers is much wider than before, new features and additions have appeared.
Consider a group of double-circuit boilers, the most popular gas units.
Double-circuit boilers have two basic functions:
- House heating.
- Hot water supply for domestic needs.
All other features are considered additional, contributing to a more successful and efficient implementation of the main tasks. A feature of this type of boilers is the need to work throughout the year.
Single-circuit structures are stopped for the summer, which allows you to increase the resource of components and parts. Double-circuit units have to be operated in a constant mode, turning off only the supply of coolant to the heating system.
This increases the load on the parts and components of the unit, reduces the resource of the most loaded sections of the boiler.
As a rule, for such designs, the power level is limited to 40-50 kW; more productive units are already equipped with built-in storage or external boilers.
In terms of design, dual-circuit models are the basic version with an added secondary heat exchanger. However, there are other types of boilers that can demonstrate more stable and high performance.
These include:
- Designs with a combined heat exchanger. They provide more stable DHW heating, high performance and fast response to requests.
- condensation models. These are boilers with the function of preheating the coolant using thermal energy from the condensation of water vapor from flue gases. Manufacturers claim for them an efficiency equal to 107-109%, which from the point of view of physics is completely absurd. At the same time, condensing units are able to work only with low-temperature systems. Under normal circumstances, they lose additional features and function as convection structures.
NOTE!
When choosing a boiler, you should make sure that its design can fully work in the proposed conditions. Otherwise, expensive equipment will be used only partially, which is unacceptable.
Kinds
Double-circuit gas boilers are distinguished according to certain characteristics.
According to the installation method:
- wall. Surface mounting requires strong bearing walls. The dimensions and weight of such units are limited by the conditions of the permissible load.
- floor standing. They can be installed directly on the floor, which expands the capabilities of the boilers and allows them to be equipped with massive units of increased power and productivity.
Type of heat transfer:
- Convection. The heat carrier is heated by a gas burner.
- Condensation. A two-stage heating scheme is used, where the first stage is the return flow heating in the condensation chamber, and the second stage is the usual preparation process in the primary heat exchanger. For the proper course of the process, it is necessary to provide appropriate conditions, which is possible only in the southern regions.
Type of heat exchanger:
- Separated. The heat carrier is heated by the primary unit, and the secondary heat exchanger (usually plate type) is responsible for the preparation of hot water.
- Combined (bithermic). It is a coil from a pipe of a specific section, where two streams can flow simultaneously without mixing. Allows you to increase the productivity of hot water, but is difficult to clean from lime deposits.
Type of combustion chamber:
- Atmospheric (open). The traditional way of operating the boiler, where smoke removal takes place natural way through a standard chimney, and the air is taken directly from the room.
- Turbocharged (closed). Air is taken from the outside using a coaxial chimney (pipe-in-pipe design). The supply of fresh air is provided by the turbo blower. It also displaces flue gases, providing a stable and adjustable smoke removal mode.
Turbocharged models are much more efficient and stable in operation, they are optimally suited for residential use.
What parameters should I pay attention to when buying
When choosing a suitable model of a gas double-circuit boiler, you should pay attention to the main technical parameters of the units:
Combustion chamber type
The most popular are boilers with a closed combustion chamber. The entire process of fuel combustion and smoke removal takes place in a system isolated from the atmosphere of the room, which increases safety for people.
In addition, a controlled smoke extraction process is much more efficient than unstable natural draft.
Power
The power level of the boiler is the main indicator that demonstrates the ability of the unit to provide thermal energy to rooms of different sizes.
Usually, the desired model is selected at the rate of 1 kW of power per 10 m2 of area.
It should be noted that a large margin should not be made, since the operating mode of the boiler should be close to the nominal one.
Heat exchanger material
For the manufacture of heat exchangers are used:
- stainless steel. This is the most affordable option, which is used in boilers of the middle and budget price range. The heat transfer and service life of such units are quite high, there is a possibility of repair or restoration.
- Copper. Heat exchangers of this type are installed in the most expensive and productive series of gas boilers. The indicators of copper heat exchangers are considered the highest.
- Cast iron. As a rule, it is used in powerful outdoor units. The heating mode is stabilized due to the large thermal inertia of the material.
Boiler type
There are two types:
- convection. The usual design of the gas unit.
- Condensing. In addition to the traditional method, these models are equipped with a coolant preheating function, which reduces fuel consumption and the load on the heat exchanger.
When choosing the type of boiler, it must be taken into account that the operation of condensing devices is possible only if the difference between the external and internal temperatures is not more than 21 °, which in Russia is impossible to ensure due to climatic conditions.
Energy independence
There are volatile and independent installations. The first ones have the maximum set of functions, but in case of a sudden power outage they become useless.
The latter do not use electricity, which expands the geography of their use. At the same time, non-volatile models have minimal capabilities and a complex ignition method.
TOP-10 rating
Consider the most popular models of double-circuit gas boilers, recognized by experts and ordinary users as the most successful in terms of design and operation:
Buderus Logamax U072-24K
Gas double-circuit boiler designed for wall mounting. Equipped with a closed-type combustion chamber and a separate heat exchanger - primary copper, secondary - stainless.
Heating area - 200-240 m2. It has several levels of protection.
Models with the index "K" perform heating of hot water in flow mode. It is possible to connect a room temperature controller.
Federica Bugatti 24 Turbo
Representative of Italian heat engineering, wall-mounted double-circuit gas boiler. Designed to work in a cottage or public space up to 240 m2.
Separate heat exchanger - copper primary and steel secondary. The manufacturer gives a 5-year warranty period, which indicates confidence in the quality and operational capabilities boiler.
Bosch Gaz 6000 W WBN 6000-24 C
The German company Bosch is known all over the world, so it does not need additional introductions. The Gaz 6000 W series is represented by wall-mounted models designed for operation in private homes.
The 24 kW model is the most common, it is optimal for most residential and public buildings.
There is a multi-stage protection, the copper primary heat exchanger is designed for 15 years of service.
Leberg Flamme 24 ASD
Leberg boilers are usually referred to as budget models, although there is no noticeable difference in cost with products from other companies.
The Flamme 24 ASD model has a power of 20 kW, which is optimal for houses of 200 m2. A feature of this boiler is its high efficiency - 96.1%, which is noticeably superior to alternative options.
Works on natural gas, but can be reconfigured to liquefied gas (replacement of burner nozzles is required).
Lemax PRIME-V32
Wall-mounted double-circuit boiler, the power of which allows you to heat 300 m2 of area. It's suitable for two-storey cottages, shops, public or office spaces.
Produced in Taganrog, the basic technological principles of assembly were developed by German engineers. The boiler is equipped with a copper heat exchanger providing high heat transfer.
It is calculated on operation in difficult technical conditions.
Navien DELUXE 24K
Korean boiler, the brainchild of the famous company Navien. It belongs to the budget group of equipment, although it demonstrates high performance.
It is equipped with all necessary functions, has a self-diagnosis system and frost protection. The power of the boiler is designed to work in houses up to 240 m2 with a ceiling height of up to 2.7 m.
Mounting method - wall-mounted, there is a separate stainless steel heat exchanger.
MORA-TOP Meteor PK24KT
Czech double-circuit gas boiler designed for hinged installation. Designed for heating 220 m2. It has several degrees of protection, blocking in the absence of liquid movement.
It is possible in addition to connect an external water heater, which greatly expands the possibilities of supplying hot water.
Adapted to unstable power supply voltage (permissible fluctuation range is 155-250 V).
Lemax PRIME-V20
Another representative of domestic heat engineering. Wall-mounted double-circuit gas boiler, designed to service 200 m2.
The modulating burner makes it possible to distribute fuel more economically by changing the gas combustion mode depending on the intensity of the coolant circulation. Has a separate stainless steel heat exchanger, can be connected to a room thermostat.
Possibility of remote control.
Kentatsu Nobby Smart 24–2CS
Japanese wall mounted gas boiler providing heating of 240 m2 and hot water supply. Model 2CS is equipped with a separate heat exchanger (primary in copper, secondary in stainless steel).
The main type of fuel is natural gas, but when changing jets, it can be converted to the use of liquefied gas. Most of the performance characteristics correspond to European boilers of similar power and functionality.
It is possible to use several design options for the chimney.
Oasis RT-20
Wall-mounted double-circuit gas boiler Russian production. Designed to work in rooms of about 200 m2. Equipped with an efficient copper heat exchanger and a stainless secondary assembly.
Turbocharged combustion chamber, built-in expansion tank and a condensate drain.
With an optimal set of functions and high build quality, the model has a relatively low price, which ensures its demand and popularity.
Reviews
The opinion of users is rarely unanimous, but its value lies in disinterest and the most realistic assessment of the situation.
Here's what their owners think about choosing dual-circuit units:
(( reviewsOverall )) / 5 Owner rating (4 votes)
Your opinion
Are you going to buy an efficient gas boiler that can provide heat in the most severe frosts? There are many factors to consider when choosing equipment for your home. What is the best option? What are the most important criteria? Owners of both private houses and apartments have to think about solving this problem.
Agree, it’s a shame to pay twice and end up with an insufficiently functional boiler that can’t heat Vacation home with the onset of cold weather. Therefore, before choosing a gas boiler in a store, you will have to weigh the pros and cons. Otherwise, you can take a far from suitable model.
We will help you determine the main criteria that dramatically affect the choice. Helpful Tips and important nuances outlined in our article. Photo materials and a selection of videos with advice from experienced experts in the field of heat supply are provided to help the homeowner.
The absence or constant interruptions of centralized heating and hot water supply are forcing the owners of cottages and city apartments to create.
Their main element is a boiler, which, by burning fuel, heats the coolant for the heating system and water for domestic needs.
The choice in favor of gas equipment is due to the cost-effectiveness of using gas as a fuel. All other options for combustible fuel are more expensive or give less heat at times.
Plus, modern heaters of this type do not require constant supervision. I connected the unit to the main pipe or cylinder, and it works smoothly as long as there is something to burn.
The use of natural gas is the optimal solution for heating a private house in terms of fuel costs and operating costs.
However, in order for the gas boiler to function properly and in optimal mode, it is necessary to choose it correctly when buying and regularly service it after connection.
There are many different in functionality and special modules within the models of this equipment. The purchase of a gas heating unit should be approached thoughtfully.
There are many criteria for choosing a gas boiler, but the main ones are:
- The power output by the device.
- Layout solution (number of circuits, body type and heat exchanger material).
- Place for installation.
- Availability of automation for safe operation.
All these questions are closely related. The lack of space for a large unit or the desire to mount a device with an aesthetic appearance in the kitchen forces you to choose a wall-mounted model of less power than the floor version. And the need to heat hot water for the washbasin and shower makes you look for a boiler with two circuits.
When choosing a heater, you should remember the need for its repair, if the workshop for after-sales service the selected model is not nearby, it is worth looking for another option
The subtleties of choosing a boiler for heating and hot water
Modern thermal equipment has a stylish appearance, is filled with all sorts of sensors and can operate in several modes.
Each gas boiler has a burner inside the body and a combustion chamber with a heat exchanger, but there are also models with circulation pump and other modules
First, the gas in the burner is ignited using an electronic system or a piezoelectric element. Then, as a result of its combustion in the furnace, water is heated by means of a heat exchanger, which is sent to the heating system circuit.
This is how classic single-loop models work. To prepare domestic hot water, you must select or connect a boiler.
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