Which double-circuit gas boiler is better. Rating of gas boilers - which is the most reliable? Rating of floor-standing gas boilers

Gas boilers are designed not only for heating a house, but also for organizing a hot water supply system. There are several varieties, so before purchasing you need to determine which design will be most suitable.

All boilers on sale can be divided into two large groups: single-circuit and double-circuit. The first type is intended exclusively for creating a comfortable temperature in the room, while the second is also used to supply hot water. Double-circuit boilers are more compact in size, but there are increased requirements for the conditions of use. In particular, to automatically shut off the hot water supply, the incoming flow must have a fairly high pressure. Because of this, it is almost impossible to save hot water.

For large rooms, double-circuit boilers will not be the most suitable option, especially if the water intake equipment is located quite far from the boiler. Single-circuit products are large in size and difficult to install.

Also, all boilers on the market can be divided according to the installation method - floor-mounted or wall-mounted. Floor-standing ones are more powerful, have significant dimensions, and can be used to heat a room of about 600 square meters. m. Our ranking of the top 10 best gas boilers presents all types of similar heating equipment. When compiling it, we take into account the price-quality ratio of the model, the opinions and reviews of customers, and many other factors. We hope that our rating will help you decide on the most suitable model.

List of the best models of gas boilers for home heating

10.BAXI SLIM 1.300 iN

High-quality floor structure equipped with a heat exchanger made of cast iron. It has an electronic system for adjusting the water temperature in the system and self-diagnosis. The device is easy to install, use and maintain, and does not require regular maintenance.

The boiler has an attractive appearance: even if it is in plain sight, it will not spoil the interior of the room at all; it has acceptable dimensions - only 35 cm in width. If necessary, you can connect to it an external storage-type boiler, which is used to supply hot water. The temperature range is 30-85 degrees in a standard heating system and 30-45 degrees when using the heated floor option. For the boiler, you can additionally purchase a remote control with a climate regulator; there is an outdoor temperature sensor, thanks to which the automation will adjust to weather conditions.

Advantages:

• Convenient overall dimensions;
• Heated area up to 365 sq. m - it is quite enough for a two-story house;
• Cast iron heat exchanger, characterized by a long service life;
• High efficiency – approximately 90%;
• Small overall dimensions;
• An electronic protection system is provided.

Flaws:

• The valves are not very tight - gas popping is heard during ignition;
• The need to connect to the power grid.

9. Ariston GENUS Premium EVO 24 FF

Wall-mounted double-circuit equipment equipped with improved consumer qualities. The appearance of the boiler is beautiful; on the front panel there is a small monochrome display and several buttons that allow you to adjust the temperature in the heating and hot water system.

It operates almost silently, consumes a small amount of gas - a maximum of 2.5 cubic meters per day. The design includes a modulating fan that adjusts automatically; there is a high-power circulation pump that ensures the rapid passage of water through the heating system. The primary heat exchanger has a significant volume, is made of stainless steel, and has a protection system against scale formation and freezing. If necessary, you can additionally purchase a number of accessories to adjust the temperature from a distance.

Advantages:

• Convenient multifunctional liquid crystal display;
• Modulation pump;
• Programmable timer;
• Primary heat exchanger made of stainless steel;
• Frost protection;
• The circulation pump is blocked if necessary.

Flaws:

• Quite expensive;
• Spare parts and repairs are also expensive.

8. Navien GA 35KN

It has small dimensions and low weight - the device is convenient to transport and easy to install, even on your own. The connecting pipes are located on both sides of the boiler, which has a positive effect on the installation and connection process. The design includes a protective system SMPS (Switched Mode Power Supply), which protects equipment from voltage surges of up to 30% up or down. At the same time, the boiler will function reliably, without various failures, which increases its service life.

If the room temperature drops, the frost protection system automatically turns on. The inflatable burner has a special fan that effectively removes all combustion products into the chimney. The kit includes a remote control to make using the device easier. The menu is completely Russified, there is a liquid crystal display equipped with backlight.

Advantages:

• Convenient control system;
• It works quite quietly;
• The device is completely Russified;
• All elements are reliable and durable.

Flaws:

• Does not function without electricity;
• Sometimes problems arise with hot water supply if the water pressure in the supply system is insufficient.

7. Protherm Panther 25 KOO

This is the only single-circuit design in our rating of gas boilers designed for wall installation. If necessary, an external boiler can be connected to the device. The boiler has high performance capabilities and acceptable overall dimensions. This equipment is controlled using a special built-in processor, which is responsible for independently diagnosing the unit and adjusting the temperature in the system. The kit includes an automatic coolant circulation system, due to which the boiler will function reliably with any type of heating.

It is completely safe, has a protection system against overheating, freezing, serious voltage surges, short circuits, and can withstand even high indoor humidity. The boiler has good performance indicators; the front panel has a fairly informative display with a Russian-language menu. If desired, you can additionally purchase an accessory that is responsible for automatic adjustment depending on weather conditions.

The efficiency is more than 90%, the highest gas consumption is 2.85 cubic meters per hour. The boiler effectively heats houses whose area does not exceed 250 square meters; the coolant temperature ranges from 38 to 85 degrees. The design has a built-in expansion tank, its volume is 7 liters. The heat exchanger is reliable, made of copper, and brings the water temperature well to the specified limits.

Advantages:

• Easy to install and operate;
• Almost all work processes are automatic;
• Ability to function in high humidity conditions.

Flaws:

• There is no automatic start system when there is a power outage;
• Requires annual prophylaxis.

6. Bosch Gaz 4000 W ZWA 24-2 A

Wall-mounted equipment designed to operate on the basis of natural or liquefied gas. The device is equipped with a closed combustion chamber; combustion products are removed outside the room using a special fan. To ensure safe operation, the boiler has a Cotronic safety system, characterized by ionization flame control and several solenoid-type valves. It ignites automatically thanks to the presence of piezo ignition.

The heating pump is three-stage - this allows the device to be used for large areas: about 200 square meters. The design has a reliable feed tap, and also includes a sensor to protect equipment from overheating. The volume of hot water is about 17 liters per minute - this amount is quite enough for a family of four. The maximum gas consumption is 2.7 cubic meters per hour. If the draft is lost, the boiler automatically turns off. The boiler has a summer operating mode, when it will only function for preparing hot water.

Advantages:

• Low cost;
• Easy to maintain;
• Quiet operation;
• The controls are very simple.

Flaws:

• Requires electricity to operate;
• The kit does not include a voltage stabilizer, since surges in the network can negatively affect the functioning of the device.

5. Ariston CLAS B 24 FF

The wall-mounted boiler, which takes up a minimum amount of free space and is installed on the wall, has a power of 24 or 30 kW, depending on the configuration. It is used for both heating and hot water supply. The design has a built-in stainless steel boiler with a capacity of 40 liters. Essentially, this is a single-circuit product, but due to the storage tank, it is capable of producing enough hot water for a family of two or three people.

In the rating of gas boilers, this is the most original unit; moreover, the water in the boiler heats up very quickly - in just 10-15 minutes. The design has a digital liquid crystal display that makes it easy to control the device.

Advantages:

• There is a delay function for turning on the equipment;
• Availability of a protection system against freezing and scale formation;
• There are two heat exchangers - for heating and hot water supply. The first is made of copper, the second is made of stainless steel;
• Economical;
• Virtually no extraneous noise;
• Minimum waste is released into the atmosphere.

Flaws:

• There is no filter at the cold water inlet;
• There is no programming mode.

4. Vaillant atmoVIT VK INT 324 1-5

One of the best floor-standing gas boilers, it compares favorably with other models presented in this rating due to its efficiency and compact overall dimensions. It is suitable not only for domestic use, but also for heating production areas - up to 320 square meters. It has the ability to connect an external boiler to provide hot water.

The heat exchanger is made of cast iron, resistant to corrosion processes, and has five sections. In order for the device to function as reliably as possible, it is advisable to connect it to the mains via a voltage stabilizer. The boiler is equipped with an open combustion chamber, so it must be connected to a vertical chimney so that combustion products escape into the atmosphere naturally. The control system is equipped with a digital display with a Russian-language menu, which makes setup as convenient as possible and also allows for complete control over the operation of this device.

Advantages:

• The boiler independently diagnoses problems in its systems;
• Reliability and durability;
• Possibility of connecting a boiler to create a hot water supply system;
• Gas supply level control system.

Flaws:

• Considerable mass;
• Lack of expansion tank in the design.

3. Buderus Logamax U072-24K

This double-circuit boiler is designed for wall installation, equipped with a closed combustion chamber and a dismountable casing, which is quite convenient for cleaning. Initially, it was created exclusively for Russian climatic conditions. A plate-type heat exchanger is capable of quickly heating water both in the heating system and for distribution to the required temperature. The volume of hot water is quite enough for a family of several people; the boiler itself shows itself effectively in a house of up to 240 square meters. m.

The controls are clear, so all parameters are set almost instantly. The user interface is displayed on a convenient liquid crystal display, due to which all changes will be viewed in real time. The boiler is capable of functioning in the most difficult conditions: it tolerates voltage fluctuations well, as it is designed for a range from 165 to 240 V, it can be used even with fairly hard water. The maximum gas consumption is 2.8 cubic meters of gas per hour, the maximum hot water temperature is 63 degrees, the coolant heats up to 85 degrees. The device weighs only 30 kg, so it can be installed by one person; connection to the main systems must be done by specialists.

Advantages:

• Light weight, attractive appearance;
• Easy to operate;
• All necessary information is displayed on the liquid crystal display;
• A reliable safety system that prevents the device from freezing, excessive or insufficient pressure, there is a flame sensor;
• Wide burner range, due to which the hot water temperature can be adjusted from 40 to 60 degrees;
• Service is simple and convenient;
• There is a built-in expansion tank with a working volume of 8 liters.

Flaws:

• Plastic supply tap, which quickly fails;
• The exhaust fan is another weak point of the boiler.

2.BAXI Main 5 24 F

One of the best gas boilers for a private home, it is equipped with an absolutely safe closed combustion chamber. This eliminates gas leaks during operation of the equipment; combustion products are discharged into a special turbine, through which they are forced into a coaxial chimney with a diameter of 60/100 mm or into a two-pipe system, the diameter of which should be 80 mm.

The design has a gas burner, equipped with nozzles made of stainless steel. The Grundfos circulation pump is equipped with an automatic air vent. The boiler is a double-circuit flow-through type, its maximum power is 24 kW, it is capable of heating a house with an area of ​​no more than 220 square meters. m.

Advantages:

• The design provides only all the necessary capabilities;
• Acceptable price;
• Small dimensions;
• Light weight;
• A large number of authorized service centers.

Flaws:

• The need to connect to the network through a stabilizer, since the board is very sensitive to voltage drops.

1. Protherm Bear 30 TLO

The recognized leader in our ranking of the top 10 best gas boilers is this model. It has the best ratio in terms of price and quality, and has high performance indicators. The product is equipped with a closed combustion chamber, which immediately makes it absolutely safe during use. The heat exchanger is made of thick cast iron.

The equipment is intended exclusively for heating a house, the maximum power is 30 kW, the boiler does not require connection to the electrical network, which gives it a tangible advantage over other models. Even in the absence of electricity, the house will remain warm. The performance is quite high - efficiency is 90% at 30% equipment load. The body is made of stainless steel, has small dimensions, and with this boiler you can heat a building with an area of ​​up to 270 square meters.

Advantages:

• Economical;
• Acceptable price;
• Non-volatile (not dependent on the power supply system);
• Long service life;
• Ignition is produced using the “unquenchable flame” technology;
• Built-in thermocouple that produces the voltage required for normal operation of the boiler;
• A large number of protective and control systems;
• If necessary, you can connect a boiler;
• Assembly reliability.

Flaws:

• Not detected.

In conclusion, useful videos

Choosing a boiler for a heating system is an important and responsible procedure that determines the microclimate of the house for the coming years.

Errors in this matter are unacceptable, but most users do not have sufficient knowledge on this topic.

You need to clearly understand the design features of gas boilers and be able to determine the most successful parameters and set of functions.

Sales consultants often try to sell stale goods and give distorted information, so it is useful to have some information about the most important aspects.

Let's consider one of the most effective and popular groups of heating gas boilers - floor-standing models

The basic function of any boiler is to heat the coolant for the heating circuit. All models have it, regardless of what additional features they have.

There are units designed only for the preparation of coolant. These are single-circuit boilers that perform a single, main task. In addition, there are double-circuit boilers that can simultaneously prepare hot water for domestic needs while heating the heating agent.

They are equipped with an additional heat exchanger, which uses part of the excess thermal energy of the coolant.

These units are called dual-circuit. They allow you to get the maximum range of functions, but have some limitations in the performance of the DHW circuit.

Heating occurs in a flow mode, so it is not yet possible to achieve a uniform and stable temperature.

NOTE!

Single-circuit boilers can be connected to external storage boilers. This will require some expenses, but as a result it makes it possible to obtain a stable and even hot water supply.

Advantages and disadvantages

The advantages of floor-standing boilers include:

• no restrictions on the power of the unit;
• strength, reliability of all components and parts;
• ease of installation;
• stability of operation, the ability to maintain a given mode regardless of external conditions;
• no unnecessary additions;
• powerful models can be connected in a cascade of up to 4 units, forming high-performance thermal units.

The disadvantages of floor structures are:

• large weight, size;
• the need for a separate room;
• for atmospheric models it is necessary to connect to a common house chimney

In addition to a separate room, for floor-standing boilers it is necessary to provide the possibility of connecting to a vertical chimney or leading a horizontal pipe through the wall.

Convection or condensation?

The traditional method of heat transfer from a gas boiler is heating the coolant in flow mode. It passes through a heat exchanger, and the gas burner heats the liquid according to the specified operating mode.

This type of boiler is called convection boiler. Relatively recently, a new design of units appeared - condensing. It uses preheating of the coolant from the heat released during condensation of the exhaust smoke.

The temperature of the liquid increases by a small amount, but this is enough to reduce the heating mode of the main heat exchanger.

As a result, a positive effect is achieved:

• fuel consumption is reduced;
• The service life of the boiler increases.

With properly organized operation of the unit, fuel savings reach 20%. However, there are some specific conditions that sharply limit the scope of application of condensing boilers.

The reason is that the condensation process can only occur when the temperature of the walls of the condensation chamber is higher than the return flow temperature. This is only possible on underfloor heating systems or radiator circuits with a low degree of heating.

It is calculated that the operation of the first stage is possible only if the difference between the outside and inside of the house is no more than 20°. For Russia, such a ratio is simply impossible. If condensation is not possible, the boiler operates as a conventional convection model.

Considering the almost twofold difference in prices, one should weigh the feasibility of such an expensive purchase with its dubious effectiveness.

What is the difference between non-volatile and conventional boilers?

Conventional (volatile) boilers require an electrical supply, without which they cannot operate. The turbofan, circulation pump, and electronic control board require high-quality and stable power supply.

Particularly capricious are control boards, which immediately fail when the current parameters change. Manufacturers claim the ability to withstand large voltage fluctuations, but in practice this is not observed.

At the same time, volatile units have a set of additional capabilities - they can be controlled remotely, integrated into a smart home system, and programmed for some time in advance.

Non-volatile boilers do not have all these additions. They work exclusively with the help of mechanical components and parts, like a regular gas stove.

The design of such units is devoid of all unnecessary components, it is functional and therefore very reliable. In addition, owners of non-volatile boilers do not face the risk of being left without heating in the event of a sudden power outage.

Dilapidated and overloaded networks are a typical phenomenon for remote villages, so the use of independent heating systems is very valuable for many users.

Types of heat exchanger materials – what to choose?

The heat exchanger is the main component of a gas boiler. The coolant is heated in it, so the parameters and design of this unit are of great importance.

For production use:

• stainless steel. This is a budget option, although the parameters of steel heat exchangers allow you to get quite effective results. Typically, such units are installed on inexpensive medium-power boilers;
• copper tube (coil). This option is used on expensive models of gas boilers. Copper has a high heat transfer coefficient, so the effect of using such heat exchangers is very high;
• cast iron. It is resistant to mechanical and thermal loads. For the manufacture of heat exchangers, gray ductile metal is used, which is resistant to changes or different values ​​of liquid temperature at individual points. Massive units help equalize the degree of heating and soften sudden temperature changes.

Copper heat exchangers are considered the most preferable, but steel and cast iron units are also quite functional and can provide high-quality heating of the heating agent.

Types of boilers by type of smoke removal and which one is better?

There are two options for removing combustion products:

• atmospheric. This is a traditional way of removing flue gases using natural stove draft. The technique is well studied, but is unstable and highly dependent on external conditions. Most often used on non-volatile models;
• using a turbofan. The combustion chamber of such boilers is isolated from the outside atmosphere, so the combustion process and smoke exhaust are ensured by a turbocharging fan. It supplies fresh air, which supports the flame and displaces smoke into a specially designed chimney (coaxial).

Turbocharged boilers are considered more convenient designs for use in residential premises - there is no smell of smoke, oxygen does not burn out, the unit is completely safe.

However, such boilers need to be connected to the power supply.

Selection of coolant

Usually two options are used:

• water. Experts recommend using distilled water if the volume of the system allows it. This method avoids the formation of lime deposits, but it will not protect against freezing of pipes in winter;
• ethylene glycol (antifreeze). This is a liquid that does not freeze when circulation stops. Contains a set of anti-corrosion additives, does not form scale, and does not have a destructive effect on polymers, rubber, and plastic.

For systems that need to be drained frequently, water is the best and most economical choice. The use of antifreeze is recommended for heating circuits that operate under difficult conditions.

Types of boiler ignition methods and which method is the most optimal?

There are three ignition options:

• electronic. The burner is ignited at the touch of a button using a special unit. This option is present on all models of volatile boilers;
• piezoelectric. The principle of operation of such a system is similar to all piezo devices - in order for a spark to appear, you need to press on a special crystal. Used on non-volatile boilers. Many users find this type of ignition inconvenient;
• manual. The flame is ignited with an ordinary lit match (spear). For ignition, you need to have a certain supply of such elongated wooden sticks.

Most users unanimously prefer the electronic type of ignition, but it is not possible on non-volatile units. You have to get used to using a piezoelectric element or ignite the burner with a burning torch.

Types by combustion chamber type

There are two types of combustion chambers:

• atmospheric (open). They work on the traditional principle - air is taken directly from the surrounding atmosphere, and smoke is removed using natural draft. For the operation of such boilers, appropriate conditions are required, so they are not in great demand. However, atmospheric units are capable of operating in energy-independent mode;
• turbocharged (closed). The fully sealed design requires air supply, which is done using a turbofan. This method allows you to regulate the combustion mode and the removal of combustion products. It is considered the most convenient and safe.

The choice of combustion chamber is determined by the design of the boiler - all non-volatile models are atmospheric, and dependent units can be either open or closed.

Turbocharged vehicles are preferred.

Rating of TOP 10 floor-standing gas boilers

Let's look at the features of some of the most popular models of floor-standing gas boilers:

Protherm Wolf 16 KSO

The company from Slovakia produces a wide range of gas boilers. Model Wolf 16 KSO is a single-circuit boiler with a capacity of 16 kW. It can successfully heat a house of 160 square meters. m.

The boiler heat exchanger is two-pass, made of stainless steel.

Main settings:

• Efficiency - 92%;
• coolant temperature - 30-80°;
• gas consumption - 2.1 m3/hour;
• dimensions - 390x745x460 mm;
• weight - 46.5 kg.

All series of Protherm boilers are named after various animals. By their appearance, you can determine whether a given model belongs to a specific equipment group.

Lemax Premium-12.5

Floor-standing single-circuit gas boiler made in Russia. With a power of 12.5 kW, it is capable of heating rooms up to 125 sq. m. m.

Main characteristics:

• Efficiency - 90%;
• gas consumption - 1.5 m3/hour;
• dimensions - 416x744x491 mm;
• weight - 55 kg.

Non-volatile units make it possible to increase operational reliability and relieve concerns about the safety of heating in the winter.

Lemax Premium-20

Russian floor heating boiler. The power of the unit is 20 kW, making it a good choice for owners of houses up to 200 sq.m.

A non-volatile boiler with a steel heat exchanger has the following parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 Bar;
• gas consumption - 2.4 m3/hour;
• dimensions - 556x961x470 mm;
• weight - 78 kg.

Single-circuit non-volatile models have the simplest design possible, which increases the reliability and stability of their operation.

BAXI SLIM 1.230 iN

Italian engineers have developed a high-quality and productive model of a floor-standing gas boiler with a capacity of 22.1 kW. This allows the unit to heat an area of ​​up to 220 square meters. m.

• Efficiency - 90.2%;
• coolant temperature - up to 85°;
• system pressure - up to 3 Bar;
• gas consumption - 2.59 m3/hour;
• dimensions - 350x850x600 mm;
• weight - 103 kg.

BAXI boilers belong to the group of elite heating equipment and are one of the leaders in European heating technology.

Lemax Premium-25N

Another representative of domestic heating equipment, manufactured in Taganrog. This is a single-circuit, non-volatile gas boiler designed for floor mounting.

Its parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 Bar;
• gas consumption - 3 m3/hour;
• dimensions - 470x961x556 mm;
• weight - 83 kg.

The warranty on Lemax boilers lasts 36 months, which increases the technical support of the manufacturer by one and a half times and allows the user to receive specialized repairs or maintenance of the units.

Siberia 11

Products of the Rostov company "Rostovgazoapparat". The power of this floor-standing energy-independent unit is up to 11.6 kW, allowing you to heat the house up to 120 square meters. m.

All controls are mechanical; a power outage will not affect the heating system in any way.

Boiler parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 Bar;
• gas consumption - 1.18 m3/hour;
• dimensions - 280x850x560 mm;
• weight - 52 kg.

The company's arsenal includes single- and double-circuit models of boilers of this series.

MORA-TOP SA 20

Czech floor-standing boilers with a cast iron heat exchanger provide high reliability and stability of home heating. The MORA-TOP SA 20 model has a power of 15 kW and is designed for operation in rooms up to 150 sq. m. m.

Boiler characteristics:

• Efficiency - 92%;
• coolant temperature - 85°;
• system pressure - up to 3 Bar;
• gas consumption - 1.6 m3/hour;
• dimensions - 365x845x525 mm;
• weight - 99 kg.

The heat exchanger design is sectional and consists of 3 compartments. The boiler is non-volatile, but is equipped with two types of pipes - for natural and forced circulation.

Lemax Premium-10

Floor-standing non-volatile gas boiler with a power of 10 kW. Capable of heating a house up to 100 sq.m..

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 1 bar;
• gas consumption - 1.2 m3/hour;
• dimensions - 330x748x499 mm;
• weight - 48 kg.

The boiler is single-circuit, all controls work on a mechanical principle.

Lemax Premium-16

Floor-standing gas boiler, designed to service the heating system of a private house up to 160 sq. m.

Its power is 16 kW, other parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 Bar;
• gas consumption - 1.9 m3/hour;
• dimensions - 416x744x491 mm;
• weight - 55 kg.

This model is one of the most popular on the market, since its power is optimal for most private homes.

Lemax Clever 30

Single-circuit floor-standing gas boiler. Its power is 30 kW, which allows you to heat 300 sq. m. usable area. The unit is volatile, has electronic control and a comprehensive protection system.

Characteristics:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 2 Bar;
• gas consumption - 1.75 m3/hour;
• dimensions - 470x961x556 mm;
• weight - 85 kg.

The power of the unit is excessive for one residential building, so owners often buy such boilers together and use them to operate in 2 systems.

Customer Reviews

Let's consider user opinions:

(( reviewsOverall )) / 5 Owner rating (3 votes)

Your opinion

Home heating systems using gas boilers as a heat source are becoming commonplace 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 start or end of the heating season.

The range of functions of modern gas boilers is much wider than before, new features and additions have appeared.

Let's consider a group of double-circuit boilers, the most popular gas units.

Double-circuit boilers have two basic functions:

• House heating.
• Supply of hot water for domestic needs.

All other features are considered additional, contributing to a more successful and efficient performance of the main tasks. A special feature of this type of boiler is the need to operate throughout the year.

Single-circuit structures are stopped for the summer, which makes it possible to increase the service life of components and parts. Double-circuit units have to be operated in 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 life of the most loaded areas of the boiler.

As a rule, for such designs the power level is limited to 40-50 kW; more efficient units are already equipped with built-in storage devices or external boilers.

In terms of design, dual-circuit models are a basic option 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 quick 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 an efficiency of 107-109% for them, which is completely absurd from a physics point of view. At the same time, condensing units are capable of working only with low-temperature systems. Under normal conditions, they lose additional capabilities and function as convection structures.

NOTE!

When choosing a boiler, you should make sure that its design can fully operate under 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.

By installation method:

• Wall mounted. For hanging installation, strong load-bearing walls are required. The dimensions and weight of such units are limited by permissible load conditions.
• Floor-standing. They can be installed directly on the floor, which expands the capabilities of boilers and allows them to be equipped with massive units of increased power and productivity.

By type of heat transfer:

• Convection. The coolant is heated by a gas burner.
• Condensation. A two-stage heating scheme is used, where the first stage is the heating of the return flow in the condensation chamber, and the second is the usual preparation process in the primary heat exchanger. For the process to proceed correctly, it is necessary to provide appropriate conditions, which is only possible in the southern regions.

By heat exchanger type:

• Separated. The heating of the coolant is carried out by the primary unit, and the secondary heat exchanger (usually plate type) is responsible for preparing hot water.
• Combined (bithermic). It is a coil made of a pipe of a specific cross-section, where two streams can flow simultaneously without mixing. Allows you to increase DHW productivity, but is difficult to clean from lime deposits.

By type of combustion chamber:

• Atmospheric (open). The traditional way of boiler operation, where smoke is removed naturally through a standard chimney, and air is taken directly from the room.
• Turbocharged (closed). Air is taken from the outside using a coaxial chimney (pipe-in-pipe design). The turbocharger fan provides fresh flow. 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 use in residential areas.

What parameters should you pay attention to when purchasing?

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 occurs in a system isolated from the room atmosphere, which increases safety for people.

In addition, the controlled smoke removal process is much more effective than unstable natural draft.

Power

The boiler power level is the main indicator demonstrating the ability of the unit to provide thermal energy to rooms of different sizes.

Usually the desired model is selected based on 1 kW of power per 10 m2 of area.

It is necessary to take into account that you should not make a large reserve, since the boiler operating mode should be close to the nominal one.

Heat exchanger material

For the manufacture of heat exchangers they use:

• Stainless steel. This is the most affordable option, which is used in boilers in the middle and budget price range. The heat transfer and service life of such units are quite high, there is the possibility of repair or restoration.
• Copper. Heat exchangers of this type are installed in the most expensive and productive series of gas boilers. The performance of copper heat exchangers is considered the highest.
• Cast iron. As a rule, it is used in powerful floor-standing units. The heating mode is stabilized due to the high thermal inertia of the material.

Boiler type

There are two types:

• Convection. Conventional design of a gas unit.
• Condensation. 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 is necessary to take into account that the operation of condensing devices is possible only when the difference between external and internal temperatures is no more than 21°, which in Russia cannot be ensured due to climatic conditions.

Energy independence

There are volatile and independent installations. The former have the maximum range of functions, but in the event 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

Let's consider the most popular models of double-circuit gas boilers, recognized by specialists and ordinary users as the most successful in design and operational terms:

Buderus Logamax U072-24K

Gas double-circuit boiler designed for wall mounting. Equipped with a closed combustion chamber and a separate heat exchanger - the primary one is made of copper, the secondary one is stainless steel.

Heating area - 200-240 m2. Has several degrees of protection.

Models with the “K” index heat hot water in flow-through mode. It is possible to connect a room temperature controller.

Federica Bugatti 24 Turbo

Representative of Italian heating engineering, wall-mounted double-circuit gas boiler. Designed to work in a cottage or public space with an area of ​​up to 240 m2.

Separate heat exchanger - copper primary and steel secondary. The manufacturer provides a 5-year warranty, which indicates confidence in the quality and operational capabilities of the boiler.

Bosch Gaz 6000 W WBN 6000-24 C

The German company Bosch is known all over the world, so it does not need any additional introductions. The Gaz 6000 W series is represented by wall-mounted models designed for use in private homes.

The 24 kW model is the most common; it is optimal for most residential and public premises.

There is multi-stage protection, the copper primary heat exchanger is designed for 15 years of service.

Leberg Flamme 24 ASD

Leberg boilers are usually classified 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 with an area of ​​200 m2. A feature of this boiler is its high efficiency - 96.1%, which is noticeably superior to alternative options.

It runs on natural gas, but can be converted to liquefied gas (replacement of burner nozzles is required).

Lemax PRIME-V32

A wall-mounted double-circuit boiler, the power of which allows you to heat 300 m2 of area. This is suitable for two-story cottages, shops, public or office premises.

Produced in Taganrog, the basic technological principles of assembly were developed by German engineers. The boiler is equipped with a copper heat exchanger that ensures high heat transfer.

Designed for operation in difficult technical conditions.

Navien DELUXE 24K

Korean boiler, the brainchild of the famous company Navien. Belongs to the budget group of equipment, although it demonstrates high performance qualities.

Equipped with all the necessary functions, has a self-diagnosis system and frost protection. The boiler power is designed to operate in houses up to 240 m2 with ceiling heights up to 2.7 m.

Installation method: wall-mounted, there is a separate heat exchanger made of stainless steel.

MORA-TOP Meteor PK24KT

Czech double-circuit gas boiler designed for wall-mounted installation. Designed for heating 220 m2. It has several degrees of protection, blocking in the absence of liquid movement.

It is possible to additionally connect an external water heater, which significantly 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 heating engineering. Wall-mounted double-circuit gas boiler, designed to serve 200 m2.

A modulating burner allows you to distribute fuel more economically by changing the gas combustion mode depending on the intensity of coolant circulation. It has a separate stainless steel heat exchanger and can be connected to a room thermostat.

There is a 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 copper, secondary stainless).

The main type of fuel is natural gas, but when changing jets it can be switched to using 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 made in Russia. Designed to work in rooms of about 200 m2. Equipped with an efficient copper heat exchanger and a stainless secondary unit.

The combustion chamber is turbocharged, there is a 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 relevance and popularity.

Reviews

User opinion 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

Updated: 09/16/2018 14:39:45

Expert: Boris Mendel

*Review of the best sites according to the editors. About the selection criteria. This material is subjective in nature, does not constitute advertising and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required.

In Russia, gas is the most affordable type of fuel. That is why owners of houses, cottages and small businesses prefer to heat their premises using a gas boiler. Old Soviet cast iron devices have been replaced by elegant and lightweight models. Foreign brands have penetrated the domestic market and are seriously competing with Russian equipment. On the one hand, the range of boilers has expanded, and on the other hand, buyers have problems choosing the right model. Expert recommendations will help you find the best option for your home in the sea of ​​gas boilers.

How to choose a gas boiler

1. Number of circuits. The selection should begin by determining the number of circuits. Single-circuit models are capable of providing heat to a heating system. To heat the water, you will have to buy an additional boiler. But double-circuit boilers simultaneously heat the house, providing residents with hot water.
2. Installation. Based on the type of installation, there are floor-mounted and wall-mounted units. Floor-standing models boast higher power. At the same time, they are more bulky and heavy. Wall-mounted boilers look more elegant; they save space in the boiler room, which is important in cramped utility rooms.
3. Power. The most important parameter of a heating device is thermal power. For houses with good insulation and standard rooms (height 3 m), it is customary to determine the power indicator using a simple formula. With 1 kW of heat energy you can heat an area of ​​10 square meters. m. In old houses with poor thermal insulation, it is necessary to install a boiler whose power is 20-50% higher than the calculated one. A double-circuit boiler is also selected to be approximately 20% more powerful, so that heating hot water does not negatively affect the temperature of the coolant. For example, for heating a dacha with an area of ​​70-80 square meters. m it will be enough to buy a boiler with a thermal power of 8-12 kW. A large house or cottage with an area of ​​more than 200 sq. m is capable of heating a device with a power range of 22-35 kW. Experts do not advise chasing overly efficient models; frequently turning the burner on and off will strain residents.
4. Safety. Gas equipment is considered a dangerous device for human life. Therefore, it is necessary to study the safety systems available in the boiler. The standard set of a modern gas boiler includes gas control, protection against overheating and pump blocking, autodiagnostics, and a safety valve.

Rating of the best gas boilers

Nomination	place	Name of product	price
The best inexpensive wall-mounted gas boilers	1		RUB 40,019
	2		RUB 35,402
	3		RUB 28,250
	4		RUR 32,807
The best wall-mounted gas boilers in terms of price-quality ratio	1		RUB 112,824
	2		RUB 80,749
	3		55,480 RUR
The best inexpensive floor-standing gas boilers	1		RUB 36,575
	2		20,600 ₽
	3		RUB 35,190
The best floor-standing gas boilers in terms of price-quality ratio	1		RUB 117,773
	2		136,000 RUR
	3		RUB 83,836
	4		RUB 71,215
The best floor-standing gas boilers based on the condensing principle of operation	1		RUB 163,431
	2		117,080 RUR
The best wall-mounted gas boilers based on the condensing principle of operation	1		88,099 RUR
	2		69,213 RUR

The best inexpensive wall-mounted gas boilers

The most compact and cheapest are wall-mounted boilers. The budget sector offers models for small houses and summer cottages. Experts have identified several effective heating devices.

The Baxi ECO Four 24 F gas boiler is perfectly balanced in all main parameters. It is the best option for providing heat to private homes or offices. Despite the high price, the model is in steady demand on the Russian market. With a power of 24 kW and an efficiency of 92.5%, the heating device economically consumes blue fuel, both natural gas (2.73 cubic m/h) and liquefied gas (2 kg/h). Experts gave the boiler the top spot in our rating for its comfort and safety during operation. You can connect a heated floor to the heating device; there is a connector for connecting external control.

Using a gas boiler you can heat a house with an area of ​​more than 200 square meters. m. Users in reviews note the reliability and unpretentiousness of the device, and its attractive appearance.

Advantages

• high-quality assembly;
• stylish design;
• unpretentiousness to gas quality;

Flaws

• high price.

The Ariston CARES X 24 FF NG wall-mounted gas boiler has several important advantages. The model successfully combines an affordable price and a set of technical parameters. The device has high thermal power (25.8 kW), good efficiency (93.7%), economical consumption of natural (2 cubic m/h) and liquefied (1.59 kg/h) gas. The double-circuit unit has a closed combustion chamber, and the circulation pump is connected to a single-phase network. The model does not have a separate chimney. Therefore, experts gave the product second place in the rating.

Homeowners are satisfied with the simplicity and ease of use, the presence of a separate heat exchanger, and the winter-summer function. Disadvantages include large overall dimensions, the need to install a voltage stabilizer and a water filter.

Advantages

• high efficiency;
• acceptable price;
• safety of use;
• economical gas consumption;

Flaws

• electric ignition;
• turns off when water pressure is low.

The Bosch Gaz 6000 W WBN 6000-12 C double-circuit gas boiler is designed for installation in small houses with a total area of ​​up to 100 sq. m. m. It has a small power (12 kW), while gas consumption is also economical (natural - 2.1 cubic m/h, liquefied - 1.5 kg/h). The model is capable of heating water in radiators up to 82ºС, and hot water with a maximum temperature of 60ºС flows into the bath or kitchen faucet. Of the additional options, the device is equipped only with pump blocking protection. Based on the totality of characteristics, experts put the unit in third place in the rating.

Homeowners praise the boiler for its compactness, quiet operation, and elegant appearance. Disadvantages include a shortage of spare parts and a large number of plastic parts.

Advantages

• compactness;
• accessible menu;
• reliability and practicality;
• economical gas consumption;

Flaws

• difficulties with repair and maintenance.

The maximum power (32 kW) among budget wall-mounted boilers is the domestic development of Lemax PRIME-V32. The device can be purchased by owners of houses and cottages with a total area of ​​up to 320 square meters. m. The model was developed taking into account Russian operating conditions; it is not afraid of gas pressure changes. European components are used for manufacturing, so the manufacturer managed to achieve high reliability and durability of its product. Structurally, the heating device has two circuits and a closed combustion chamber. Experts also include a separate chimney as an advantage of the boiler.

Some users regret that the device is not suitable for working with liquefied gas. The device cannot boast of functionality either. Therefore, he does not fall into the top three of the rating.

Advantages

• high power;
• reliability;
• unpretentiousness;

Flaws

• modest functionality;
• does not run on liquefied gas.

The best wall-mounted gas boilers in terms of price-quality ratio

Among wall-mounted gas boilers, there are models that perfectly combine reasonable prices and high-quality manufacturing. Such devices are chosen by owners of houses and cottages. Here are some interesting models.

A striking representative of the new generation of gas boilers is the Buderus Logamax plus GB172-42 i. The condensing type device has the highest efficiency of 109%. Thanks to an aluminum condensing heat exchanger, the manufacturer managed to achieve a maximum power of 41.9 kW. Compact dimensions and low weight allow the unit to be mounted on a wall. A new design, a front panel made of impact-resistant glass, economical gas consumption (class A), the ability to operate on liquefied gas - all these properties allowed the device to take first place in the rating.

Experts drew attention to the possibility of remote control via the Internet, which allows the equipment to fit into the “smart home” concept. The only drawback is the high price.

Advantages

• unique efficiency;
• condensation heat exchanger;
• compactness and lightness;
• stylish design;

Flaws

• one circuit;
• high price.

The traditional convection operating principle is used in the Baxi NUVOLA-3 Comfort 240 Fi gas boiler. The device has two heating circuits, which allows not only to heat rooms, but also to heat water. The power of the unit (24.4 kW) is enough to create an optimal microclimate in a house with an area of ​​up to 240 square meters. m. The boiler consumes 2.78 cubic meters. m/h of natural or 2.07 kg/h of liquefied gas. Experts gave the product second place for the presence of a built-in 60-liter boiler and decent functional equipment. The boiler was inferior to the winner of the rating in terms of innovation; the disadvantages include heavy weight and bulkiness.

Users note the stable operation of the boiler and the ability to connect to the smart home system. Difficulties arise with programming; there is no wi-fi module included.

Advantages

• operates at low gas pressure;
• availability of spare parts for sale;
• quiet operation;
• spacious boiler;

Flaws

• complex weekly programming;
• heavy weight.

Reasonable price, efficiency and reliability were the main factors for the Vaillant turboTEC pro VUW 242/5-3 gas boiler to reach third place in the rating. Many homeowners in our country have appreciated the high quality of workmanship. Reviews are mostly positive. The double-circuit design allows the boiler to be used as a heater or water heater. The model is somewhat inferior to the leaders in power (24 kW) and efficiency (91%). Therefore, the actual use of the device is possible in houses with an area of ​​200-220 square meters. m. The manufacturer installed 6 degrees of protection and equipped the product with electronic control.

A significant disadvantage of the boiler for users was the expensive maintenance. The good thing is that breakdowns are rare.

Advantages

• reliability;
• electronic control;
• six-level protection;
• acceptable price;

Flaws

• expensive maintenance;
• modest power.

The best inexpensive floor-standing gas boilers

Among floor-standing gas boilers you can find reliable and durable budget devices. Due to their high power, they can be used for heating houses with a total area of ​​up to 200 square meters. m. Experts liked the following models.

The winner of the rating in the category of budget floor-standing boilers was the German Bosch Gaz 2500 F 25. Impeccable quality is complemented by high power (25 kW), decent efficiency (92%), and built-in automation. The model is best suited for heating a house with an area of ​​200-220 square meters. m. Users will be able to conveniently control the operation of the heating device thanks to the display backlight. Natural gas is used as the main fuel; if necessary, the device can be easily configured to use liquefied gas. The manufacturer also took care of safety. Protection against overheating and freezing, auto-diagnosis will make the use of gas equipment carefree for the homeowner.

Consumers can only complain about the high consumption of natural gas (2.73 cubic meters per hour).

Advantages

• workmanship;
• operational safety;
• built-in automation;
• high power;

Flaws

• increased gas consumption.

Despite its modest power (16 kW) and efficiency (90%), the Lemax Premium-16N gas boiler takes an honorable second place in the rating. A single-circuit device can create a cozy atmosphere in a small house with an area of ​​up to 160 square meters. m. The advantage of the model, according to experts, is energy independence. This property is appreciated by residents of regions where power outages occur.

Users like the economical consumption of natural gas (1.9 cubic meters per hour), ease of operation, availability of spare parts, and low-cost maintenance. Adequate price and reliability add to the popularity of the boiler. The disadvantages include a minimum of modern functions and a rustic design.

Advantages

• low price;
• economical gas consumption;
• simple design;
• energy independence;

Flaws

• lack of modern functions;
• modest design.

Experts placed the Navien GA 23KN gas boiler in third place in the rating. This double-circuit model has a thermal power of 23 kW and an efficiency of 91.5%, which allows you to heat houses up to 230 square meters. m. The device runs on natural gas (consumption 2.24 cubic m/h), you can switch to liquefied gas (consumption 1.96 kg/h). The device is quite comfortable to use, it has auto-ignition, a display, a remote control, a power-on indication, a pressure gauge, a thermometer, a programmer and flame modulation. Safety is ensured by protection against overheating and freezing; all faults are detected in a timely manner thanks to autodiagnostics.

Users highlight the combination of price and quality, reliable stainless steel heat exchangers. The downside is the noise of the device and the need to use original spare parts.

Advantages

• combination of price and quality;
• wide functionality;
• heat exchanger made of stainless steel;

Flaws

• noisy work;
• original spare parts required.

The best floor-standing gas boilers in terms of price-quality ratio

Floor-standing gas boilers from the middle price segment can solve more complex problems. Owners of houses with a total area of ​​up to 300 square meters should take a closer look at them. m. Experts have identified several proven models.

The combination of high performance and economical gas consumption became the main trump cards of the Viessmann Vitogas 100-F GS1D870 gas boiler in the fight for first place in the rating. With a thermal power of 29 kW and high efficiency (92%), a single-circuit device is capable of heating a house with an area of ​​280 square meters. m. Thanks to its compact size, the boiler will fit into small utility rooms, and there will be no problems with installation. Experts note the German quality of equipment, high reliability and long service life.

Users like the impressive appearance of the device, economical gas consumption, and compactness. Weather-dependent automation regulates energy consumption taking into account the outside air temperature.

Advantages

• high performance;
• weather-compensated automation;
• compactness;
• economical gas consumption;

Flaws

• one circuit.

The Italian gas boiler Baxi SLIM 2.300 Fi stands out with its elegant appearance. The floor-standing model has two circuits, which allows you to heat water in a 60-liter boiler. Experts note the presence of such modern design options as a closed combustion chamber and electronic control. The device can operate on both natural (consumption 3.49 cubic m/h) and liquefied gas (consumption 2.56 kg/h). The manufacturer has equipped its product with a power indicator, thermometer, display, and pressure gauge. The boiler starts using automatic ignition, and you can connect a heated floor to it.

Advantages

• high power;
• safe work;
• rich functional content;
• spacious boiler;

Flaws

• high price;
• heavy weight.

An interesting option for owners of small houses or summer cottages may be the Vaillant atmoVIT VK INT 164/1-5 gas boiler. The thermal power of the device is 16.9 kW, which, combined with an efficiency of 91%, allows you to heat houses with an area of ​​up to 150 square meters. m. Experts assessed the cost-effectiveness of the model. Natural gas consumption is 1.9 cubic meters. m/h, and liquefied fuel consumption is at 1.4 kg/h. Stylish design, low weight (82 kg) and high coolant temperature allowed the low-power device to take an honorable third place in the ranking.

Users note the small overall dimensions of the boiler, the electronic self-diagnosis system and reasonable price. The disadvantage is the single-circuit design with an open combustion chamber.

Advantages

• acceptable price;
• self-diagnosis system;
• lightness and compactness;
• low fuel consumption;

Flaws

• one circuit;
• low power.

The Ariston UNOBLOC GPV 24 RI gas boiler attracted the attention of specialists with its low price. A 24 kW device with an efficiency of 90.2% can heat a house with an area of ​​up to 220 square meters. m. At the same time, the heating unit consumes only 2.8 cubic meters per hour. m of natural or 2.09 kg of liquefied gas. The temperature range of the coolant is 34-82ºС. The set includes an expansion tank and a circulation pump.

The boiler did not make it into the top three ratings due to its single-circuit design, open combustion chamber and limited functionality. So the safety system is represented only by a safety valve. Some users liked the simplicity and unpretentiousness of the model, while other consumers appreciated the affordable price.

Advantages

• low price;
• economical gas consumption;
• ease of operation;

Flaws

• lacks modern features;
• minimum level of security.

The best floor-standing gas boilers based on the condensing principle of operation

When gas burns, water is formed, which they have learned to use to obtain an additional portion of heat. In condensing boilers it is possible to increase the efficiency above 100%. Among the floor-standing models, the following devices attracted the attention of specialists.

The Italian gas boiler Baxi POWER HT 1.650 has a high thermal power (65 kW). Thanks to a stainless steel condensing heat exchanger, the efficiency indicator reached 107.5%. The model has a single-circuit design with a closed combustion chamber. Natural gas (consumption 7.08 cubic m/h) or liquefied gas (5.2 kg/h) can be used to heat water. The boiler is equipped with an informative display, thermometer, pressure gauge, automatic ignition, and power indicator. You can connect a heated floor to the heating device and introduce external control. The security system consists of gas control, autodiagnostics, protection against overheating and freezing.

Experts call the Baxi POWER HT 1.650 the most reliable premium boiler; it becomes the winner of the rating. The only downside is the high price.

Advantages

• high power and efficiency;
• rich equipment;
• reliability and durability;
• safe operation;

Flaws

• high price.

Experts include high efficiency, low consumption of blue fuel and electricity among the advantages of the Buderus Logano plus GB102-16 gas boiler. Advanced technologies were used to create the heating device, which made it possible to increase the efficiency to a record level of 108%. Compact dimensions and low weight (52 kg) simplify the task of choosing a location for installation. Automation, which takes into account the readings of the outside temperature sensor, helps maintain the optimal temperature in the heating system.

Experts put the model in second position due to its low thermal power of 17 kW and more modest functional content than that of the leader in the rating. A single-circuit gas boiler at an affordable price attracts domestic users.

Advantages

• lightness and compactness;
• low gas consumption;
• modern automation;
• acceptable price;

Flaws

• low power;
• modest functionality.

The best wall-mounted gas boilers based on the condensing principle of operation

Wall-mounted gas boilers with a condensing principle of operation are somewhat inferior in power to floor-standing models. But they benefit from accessibility, compactness and cost-effectiveness. Here are the best products for today.

The combination of high thermal power (35 kW) and record efficiency (108.7%) allowed the Viessmann Vitodens 100-W B1HC043 wall-mounted gas boiler to become the winner of the rating. A small, lightweight model will fit into the tightest boiler room. All components of the device are accessible for maintenance, although the device is reliable and trouble-free. Environmentalists pay attention to the low level of emissions of harmful compounds in exhaust gases. Thanks to the variable fan speed, it is possible to significantly save on electricity. And gas consumption can be reduced by about 20%.

Users note the ability to adjust power over a wide range (8.8-35 kW), ease of control, and reliable operation of the device.

Advantages

• high efficiency;
• efficiency;
• ease of maintenance;
• compactness and lightness;

Flaws

• not detected.

The wall-mounted gas boiler Baxi LUNA Platinum+ 1.18 successfully combines ease of control and the latest technology. The model is designed for small houses, as evidenced by the maximum thermal output (18.4 kW). The single-circuit device is equipped with a closed combustion chamber and a stainless steel heat exchanger. It can operate on both natural gas (1.84 cubic m/h) and liquefied gas (1.35 kg/h). While inferior to the rating winner in performance, the Italian boiler looks better in terms of comfort. The heating device can be controlled remotely; it is possible to connect a separate chimney, as well as a heated floor.

Homeowners appreciated the affordable price, efficiency and ease of use of a gas boiler.

Advantages

• rich equipment;
• safe work;
• convenient control;
• economical fuel consumption;

Flaws

• modest performance.

Attention! This rating is subjective, is not an advertisement and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required.