The best gas boiler for heating a private house. Rating of wall-mounted double-circuit gas boilers in terms of reliability. The best batteries for a gas heating system

The heart of an autonomous heating system is a hot water boiler. The air temperature in the house and the amount of heating costs depend on its quality, functionality and efficiency. In order not to make a mistake in choosing this important device, it is necessary to study every detail and function of the device. The rating of wall-mounted gas heating boilers will help save time on getting acquainted with the technique - the top positions in it are always occupied by equipment that has earned the trust and recognition of other users.

Classification of gas boilers

Lightweight and compact wall-mounted gas heating boilers are suitable for autonomous systems in individual cottages and city apartments. This group combines several types of equipment that are fundamentally different from each other in terms of the principle of design and operation. Here is a list of the most important design features that you should pay attention to before choosing a boiler:

1. Number of circuits: single-circuit are focused only on heating, and double-circuit in parallel provide hot water functions.
2. Type of combustion chamber: open or sealed (closed).
3. Exhaust gas removal method: natural or forced.
4. Energy dependence: non-volatile wall-mounted gas heating boilers operate without being connected to electricity.
5. Burner type: atmospheric or modulating with automatic power control.

Scheme of the device of a double-circuit boiler with a modulating burner and forced draft

Consumer ratings: independent choice of buyers

The best condensing boilers

Condensing boilers are more expensive, but the overpayment is more than compensated by economical gas consumption and high efficiency of heat generators, which is at least 95-98%. It is believed that the best wall-mounted gas heating boilers of this type are manufactured by the German company Viessmann.

At the top of the condensing appliance segment is the compact and elegant Viessmann Vitodens 100-W with a maximum output of 35 kW and a hot water preparation rate of 14 liters per minute.

The second position in the ranking is occupied by the single-circuit Ariston Clas Premium Evo System 35 FF, adapted for reduced gas pressure. The device is equipped with a primary copper heat exchanger and a secondary steel plate heat exchanger. The maximum power of the device is 35 kW.

On the third line is the German heat generator Bosch Condens 5000 FM, which supports operation in a cascade and with solar collectors. The device is equipped with electronic control of the composition of the gas-air mixture and a unique heat exchanger with a patented tube configuration technology.

Two in one: the best models of double-circuit heat generators

Combined boilers solve two important tasks at once: they heat the house and provide it with hot water. These devices are in demand among owners of individual buildings and apartment residents who do not want to depend on centralized hot water supply.

The Vaillant turboTEC PRO VUW with forced flue gas extraction and an integrated plate water heater with a capacity of 11.5 liters of hot water per minute earned the most positive reviews in this group. The device is equipped with a closed combustion chamber and a modulating burner. The efficiency of the device is 93%, power is from 8 to 24 kW.

VaillantturboTECPROVUW

The second place in the ranking is occupied by the Italian Baxi Main Four 240 F, capable of preparing 13.7 liters of hot water per minute. Baxi gas wall-mounted heating boilers are equipped with a closed chamber. The devices have traction control sensors, a thermostat against water overheating, protection against freezing and scale.

In third place is the German Bosch ZWA 24-2A with an efficiency of 95% and a water heating rate of 11.4 liters per minute. The device easily copes with the maintenance of a house up to 240 square meters. meters. The compact boiler is equipped with a three-stage circulation pump and an eight-liter expansion tank.

The double-circuit gas boiler Neva Lux 7218 was not included in the top ten, but it can be noted as one of the most affordable devices. The device is equipped with a biothermal heat exchanger, modulating burner, electronic control and LCD display. The domestic boiler is focused on heating a house with an area of ​​​​up to 180 square meters. meters.

Five leading manufacturers of wall-mounted hot water boilers

Not the last role in the choice of boiler equipment is played by the manufacturer. 70% of consumers are willing to overpay for a brand if its name is associated with product quality.

1. Viessmann

The first position in the customer confidence rating is taken by Viessmann, a reputable German manufacturer of energy-saving equipment. Wismann condensing wall-mounted gas heating boilers are equipped with a simulated burner that maintains combustion with insufficient gas pressure.

1. Protherm

In second place is Protherm, a manufacturer of high-quality and functional equipment at an affordable price. The model range of heat generators of this Slovak brand includes several lines of devices with an open and closed type combustion chamber and a wide power range.

In third place in the ranking of wall-mounted gas boilers is the leading European manufacturer of equipment for boiler rooms Wolf. In the assortment of the German company there are models with a different arrangement of the combustion chamber, with built-in heat exchangers for hot water and the ability to connect a boiler.

1. Buderus

Fourth place went to the German leader Buderus. The Logamax series of wall-mounted boilers is aimed at Russian consumers and is suitable for operation in conditions of gas and water pressure drops.

The top five most popular manufacturers among Russian users are closed by the Italian company BAXI, whose assortment includes single-circuit and double-circuit wall-mounted gas heating boilers, including economical condensing ones.

Most attractive price

Wall-mounted gas heating boilers of domestic production are recognized as the most affordable in the line of functional models. Among Russian manufacturers, EPO "Signal" is the leader, in the assortment of which there are 4 modifications of double-circuit devices of the Angels series. Angels boilers are equipped with a burner with electronic ignition and an automatic ionization type flame control system.

In the middle price range there are Korean wall-mounted gas heating boilers of the Navien brand, represented by groups of high-quality double-circuit devices with a separate and coaxial smoke removal system, which operate smoothly in conditions of low and varying gas and water pressure.

Wall model NAVIEN DELUXE

Daewoo is another Korean giant that supplies the market with inexpensive atmospheric models and economical boilers with a closed combustion chamber. For ease of control, the devices are supplemented with remote controls and liquid crystal indicators.

The assessment of a consumer group may not always coincide with a personal opinion, therefore we recommend considering not only the models that received the most votes, but also other devices from well-known manufacturers, as well as new products that have not managed to win the trust of customers. In order not to make a mistake with the choice of durable equipment, it makes sense to seek help from a specialist who will take into account the needs of the family and the real possibilities of the existing heating system.

Video: how to choose a gas boiler

Many owners of private houses and industrial buildings are switching to autonomous heating, using gas as an energy carrier: this is the cheapest and most profitable.
A huge variety of foreign-made boilers of different price ranges is presented on the market, there are also Russian gas heating boilers, the prices of which are more affordable. Let's take a closer look at them and try to understand the proposals of the domestic manufacturer.

The boiler is primarily a functional device, moreover, the acquisition is not cheap. But the most important thing is that with the right choice, it is the boiler that can significantly reduce the costs of its owner, and the number of heating system repairs, the frequency of visits to service centers and the participation of residents in the maintenance of heating equipment depend solely on the right choice.

Will the boiler start at the beginning of the season, will it have to be lit manually and how often, will it provide the greatest possible savings on heating, will the boiler lead to air pollution and the room in which it was installed, will it lose its appearance over time and how long will it last - it all depends on the correct choice of the boiler, suitable for a particular room. Moreover, you can avoid all the above inconveniences without overpaying, but only competently choosing heating equipment.

When choosing a gas boiler, you usually pay attention to the following characteristics:

Boilers are classified according to installation method, functionality and exhaust gas outlet. According to the installation method, boilers are wall-mounted and floor-standing, according to the type of functionality, single- and double-circuit boilers, according to the method of gas removal - with a closed and open combustion chamber.

Floor-standing boilers are in the greatest demand: they allow you to heat a large area, are reliable and have a wide power range - 11–68 kW.

Russian manufacturers have learned to produce floor-standing boilers adapted to our operating conditions and able to compete with imported models, therefore, by purchasing a Russian-made floor-standing gas boiler, you can reduce start-up costs and get a completely reliable and in no way inferior to foreign, heating device.

The storage unit can hold up to two hundred liters of water. Thus, if you buy a Russian-made double-circuit floor-standing gas boiler, two tasks are solved at once - heating and hot water supply. Sometimes it is advisable to purchase a boiler for a single-circuit boiler, then it will work on the principle of a double-circuit one. However, double-circuit boilers are much more compact, so they are better suited for rooms with a limited area. But they have a requirement: the flow of incoming water must be under high pressure. In addition, they are not suitable in cases where the bathroom is located at a great distance from the boiler itself.

Closed and open combustion chamber

As for the type of combustion chamber - an open chamber uses the air of the room, and exhausts the exhaust gas through the chimney, a closed one (turbo) contains fans that take in air from the outside and send combustion products there. Boilers with an open combustion type work on the principle of gas burners, heat up themselves, warm up the air around them (hence the lower efficiency), require some distance from flammable objects. Turbo models are considered more economical and safer.

Among domestic models, you can find all the listed types of floor boilers, choosing according to the necessary parameters. Experts believe that modern Russian-made gas floor-standing boilers, even if they do not have highly competitive technical and operational characteristics, perform their main functions properly.

Popular Russian manufacturers of heating equipment

When choosing heating equipment at an affordable price, it is reasonable to proceed from considerations of individual needs, focusing not only on the brand. In general, floor heating reviews are increasingly positive, perhaps this is due to a decrease in purchasing power, or maybe our compatriots have begun to trust local manufacturers more and have given themselves the opportunity to evaluate Russian equipment.

Domestic gas boilers have a number of advantages for the Russian buyer:

• reasonable price;
• good service base;
• optimum efficiency.

Among the shortcomings of Russian boilers are:

1. large weight and dimensions;
2. inability to regulate temperature;
3. often outdated design.

Zhukovsky Machine-Building Plant

The plant has been producing heating equipment for over 40 years. The company presents boilers of three series (types) on the market: Economy, Universal and Comfort. Depending on the type, Zhukovsky gas boilers are equipped with imported automation or the development of their own engineers. Automation switches off / connects the burner, monitoring the temperature in the heating system, monitors the readings of safety sensors and turns off the gas supply to the boiler in the event of a potentially dangerous situation. All ZhMZ models do not require an electrical connection. Among them there are both double-circuit (AKGV) and single-circuit models (AOGV).

Floor-standing gas boilers ZhMZ of the Economy series are equipped with an atmospheric burner, equipped with emergency draft sensors, are easy to set up, and have a high efficiency. However, these models do not provide protection against overheating, which requires a more accurate calculation of the power when purchasing the boiler, as well as periodic manual ignition of the igniter in cases of protection activation. In addition, economy-type appliances require a mandatory annual maintenance procedure before the start of the season.

But for Zhukovsky gas floor heating boilers, the price is so attractive that these minor inconveniences can be ignored. In addition, the listed maintenance features apply only to the Economy series boilers. The automation of the Universal and Comfort models is more perfect (Italian and German production, respectively). These models do not demand service, are reliable and not capricious.

The price is one of the main advantages of Zhukovsky heating devices, but not the only one. In addition to low cost, they have a high efficiency (80 - 92%), a high degree of reliability and a long service life. The standards of the plant, which, by the way, also produces aviation special equipment, are conducive to confidence in the strength and long service life of the heating equipment produced here. If you need a Russian-made outdoor gas boiler, the price of which will be minimal, and the work will be stable, perhaps you should take a closer look at the Zhukovsky models.

Borinsky

Like Zhukovsky, this plant has been producing heating equipment for a long time - more than 20 years. The enterprise produces single-circuit and double-circuit boilers with the usual AOGV and AKGV markings, as well as boilers of its own design of the ISHMA series. All of them are equipped with imported automation, almost all models are non-volatile, have a relatively modern design and low price.

The reviews on Borinsk gas boilers are not bad, they speak especially warmly about the models of the IShMA series - they are additionally equipped with gas pressure sensors, providing devices with an increased level of automation of equipment operation and help to reduce specific gas consumption by about 15-20%. An important advantage of the Borinsk heating appliances is the durability of the AOGV and AKGV budget series due to a reliable cast-iron heat exchanger. True, this affects the cost.

For comparison, the heat exchangers of ZhMZ boilers are made of steel, so they are cheaper. Due to cast iron elements, some models of Borin boilers are also heavy.

For those who are looking for floor-standing Russian gas heating boilers, which are particularly durable, it is worth considering models from Borinskoye OJSC.

In general, if we compare boilers according to the material of the heat exchanger, then some comparative characteristics of cast iron and steel models should be taken into account.

Steel heat exchangers:

• cheaper than cast iron
• easier to transport and install;
• slightly less durable than cast iron.

Modern steel grades with proper operation provide a service life of up to 30 years.

Cast iron heat exchangers:

It should be borne in mind that prices for Russian-made floor-standing gas boilers also partly depend on the material of the heat exchanger.

If you need to buy a single-circuit floor-standing gas boiler that would look attractive, you should also consider Borinsky's proposals. The boilers are covered with polymer enamel, which gives them an attractive appearance: they will fit well into a modern interior and will look quite impressive. But there are also disadvantages: increased sensitivity to fuel quality and susceptibility to corrosion.

In general, the heating equipment of Borinsky is perhaps even the most reliable domestic gas floor-standing heating boilers, the prices of which are significantly lower than similar offers on the foreign market. All models of Borinsky boilers are ideally suited for operation in Russia and are characterized by high, up to 90%, efficiency.

"Signal"

The Engel heating equipment plant "Signal" has recently been gaining popularity. Its gas boiler Signal KOV-10ST and other models collect good reviews, given the optimal price / quality ratio, however, the installation of Signal boilers can be difficult due to the discrepancy in connector standards. Reviews for this gas boiler Signal are generally positive, as well as for other models of the manufacturer. They attract mainly low price.

There are single- and double-circuit models on the market, imported automation, in operation - moderately capricious.

For many who decide to buy a floor-standing gas boiler, the price often becomes the main selection criterion, but the Russian market offers such a variety of heating equipment manufactured in Russia and the CIS at a relatively equal and affordable price that it is possible to choose a model in the same price range that matches requirements for all key parameters.

Many people became interested in the small-sized and attractive design boilers "Pechkin" (Taganrog), choosing as the main argument that, for example, the gas boiler Pechkin KSG-10 is small-sized and equipped with an autonomous continuous water heating system. And someone chooses a gas floor boiler Hephaestus, which has an original water-tube heat exchanger design based on the “Russian stove” principle, which ensures quick and efficient heating of the entire heating system.

You can buy a gas boiler ThermoBar (Ukraine) with a multi-section atmospheric burner that ensures the purity of the combustion products of the fuel, silent operation and avoids the accumulation of soot in the combustion chamber even during long-term operation of the device. You can read about other popular gas boilers of Ukrainian production. In addition to the manufacturers mentioned above, the Lemax and Rostovgazapparat enterprises stably occupied their niches.

Lemax

The proposals of the Taganrog enterprise "Lemax" will be of interest to those who cannot decide on the type of boiler heating: "Lemax" offers solid fuel heaters that can be easily converted into gas ones. The company offers gas boilers in three types, both single-circuit and double-circuit, the distinguishing features of most of which are a special coating of the steel heat exchanger that protects the boiler from corrosion. There are models with cast iron heat exchangers. All boilers are equipped with imported components, have high efficiency, are non-volatile.

Rostovgazapparat

Rostov equipment is valued for its design feature, which allows complete combustion of fuel. Heat exchangers at this enterprise are made of steel, cast iron and copper. Boilers are equipped with high-quality imported automation.

Noiselessness, environmental friendliness, design, dimensions - any of these parameters can be a decisive argument when choosing. The main thing is that domestic manufacturers have learned how to create heating equipment that is affordable and able to compete with the foreign market.

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A gas double-circuit boiler is an excellent alternative if there is no desire to connect to centralized heating. Such a device can be installed both in a city apartment and in a private house and use the advantages of its operation all year round. Our rating of the best models of double-circuit boilers will help you make the right choice.

Recently, double-circuit heating boilers have become relevant: they can simultaneously heat the building, supplying it with warm water. There are two coils in the design of the model, each of them is responsible for its own function. To answer the question of which wall-mounted gas boilers are better, consider the main criteria for selecting appliances:

1. Combustion chamber type. Among the products you can find models with an open and closed combustion chamber. The open type is used for buildings with a large area, as it takes air from the room. The closed type is suitable for apartments and country houses where a chimney is not required.
2. Power. It is calculated based on the area of ​​\u200b\u200bthe space, the height of the ceilings, the number of windows. The more ways of heat loss, the more powerful boiler is needed.
3. Performance. The more hot water intake points in the house, the higher the boiler performance should be.
4. Manufacturer. There are a number of models of domestic and foreign production on the market, which have equal quality indicators. It is better to give preference to trusted brands.
5. Service and Warranty. When choosing a boiler, it is worth considering the risk of breakdown and the possibility of purchasing spare parts in the region of residence.

Expert advice

Mikhail Voronov

Specialist in the field of household appliances, electronics, construction tools, goods for cars, sports and recreation, beauty and health.

The modern most popular models can be considered in our rating with a brief overview of the characteristics.

Rating of double-circuit wall-mounted gas boilers

The model from the Leberg brand opens our selection of the best wall-mounted gas boilers. This appliance is a convection boiler with a power of 20 kW. The design provides for a closed combustion chamber, a built-in circulation pump, an electronic control panel. The device also has a built-in expansion tank with a volume of 6 liters.

The maximum pressure for the heating circuit is 3 bar, while the maximum pressure for DHW is 6 bar. Of the functions, this boiler is equipped with flame modulation, auto-ignition, pressure gauge and thermometer. The user can be sure of their safety thanks to the function of gas control, anti-freeze, as well as protection against blocking the pump. Leberg Flamme 24 ASD is a wall-mounted boiler of good quality and workmanship, suitable for the home.

• Simplicity of design and management;
• Reliability;
• Availability of all necessary protective functions;
• Ability to adjust power.

• Not detected.

Gennady, 52 years old

We put this boiler to replace the old one, which worked out its 15 years. Never regretted this device. Firstly, it is domestically produced, reliable, and the quality of iron is at its best. Secondly, it perfectly fulfills the stated functions: I heat a two-story private house, it also heats water perfectly.

The seventh position in our hit parade for the best gas boilers is occupied by a model from firm Navien. This is a two-circuit unit with a maximum heating power of 13 kW. The device allows you to heat a room up to 130 square meters. The design includes auto-ignition and flame modulation. The combustion chamber is also closed here, which ensures the safety of the user.

Important! Modern boilers are equipped with a special function that turns off the installation at the time of an emergency emergency.

An expansion tank with a volume of 6 liters is built into the device, the weight of the boiler is relatively small - 28 kg. The chimney diameter is 100 mm, the unit is equipped with frost protection. The manufacturer claims that the buyer will be able to use hot water even at low gas pressure. In addition, in the event of power outages in the boiler, a special chip is triggered to ensure that there are no breakdowns in the future.

• Availability;
• Economical gas consumption;
• Quiet operation;
• The set includes a remote control panel.

• Small delays when turning on.

Maria, 38 years old

Last year, for the first time, they abandoned central heating and installed their own double-circuit boiler Navien. The device heats a square of 80 sq.m., while hot water flows without problems. I like that there is a remote control with which we can set programs for work.

On the sixth line of our rating, a gas wall-mounted boiler from Mora-Top settled. This is a convection model with a power of 23 kW, on the front panel of which the most necessary levers are located: adjusting the temperature of water and heating. There is also a small display showing the necessary information.

Hinged gas boiler Meteor Plus PK24KT is a convenient and practical solution for a private home. A closed chamber, flame modulation, the presence of a circulation pump - all this allows you to ensure safety during operation. The expansion tank has a volume of 6 liters, and the maximum performance at a water temperature of 35 degrees is 9.4 liters of water per minute. The boiler operates on single-phase mains voltage.

• Economical gas consumption;
• Electronic control on the display;
• Autodiagnostics;
• High level of efficiency - 90%.

• Big weight.

Maxim, 36 years old

I bought this model for one simple reason - because of the low gas consumption. The device works only with grounding, so it is safe to use. Ease of use also conquered - you set the temperature on the display, and everything functions. The boiler is easy to maintain - you unscrew a couple of bolts from the side, and the panels are removed.

The next in our top wall-mounted double-circuit gas boilers is a device from the company Oasis. The maximum heating power of this model is 18 kW. The design has auto-ignition, as well as a definite bonus - the ability to connect underfloor heating. This unit is able to heat an area up to 180 sq.m.

Advice! When installing a gas boiler, hot water intake points must be located in close proximity.

The Oasis convection boiler is electronically controlled and has a closed combustion chamber. The mains voltage must be single-phase. The temperature range during operation varies between 30-80 degrees.

• Attractive appearance;
• Frost protection;
• Fast and high-quality water heating.

• Lack of remote control.

Anna, 30 years old

My husband and I moved to a country house where there was no heating at all. We put this boiler and immediately appreciated its advantages. It heats a large area of ​​the room, and is also very easy to maintain. In the event of a problem, the husband himself opened the panel and fixed everything.

On the fourth place of the top of the best gas double-circuit wall-mounted boilers is a representative of the Lemax company - the best domestic heating and hot water supply device. It should not be in vain to assume that the Russian manufacturer offers low-quality products: Lemax is a combination of modern safety requirements with German and Italian developments.

High efficiency is achieved through a closed combustion chamber and a coaxial chimney with a turbine. According to the review of this device, it is equipped with two independent circuits based on brass coils. The power range is 11-32 kW, which makes the model productive. The boiler is compatible with a large number of modern thermostats and control systems, which is beneficial for maintenance.

• High thermal conductivity;
• Strength;
• Corrosion resistance;
• Compactness;
• Large heating area - up to 300 sq.m.

• High cost compared to similar models.

Eugene, 45 years old

I installed this particular Russian-made boiler, because, according to reviews, it is the best in its segment. It suits me that all the necessary information is displayed on the display, and even a pensioner can master simple controls - this is how I taught my dad to use the device when we are not at home.

Opens the top three wall-mounted gas boilers for heating a private house manufacturer Baxi. This boiler is a combination of Italian quality and maximum efficiency at a reasonable cost. A distinctive feature of the device is a removable digital panel, which is also a temperature sensor in the room. This feature allows the owner of the boiler to decide where the control panel will be located.

In terms of reliability, this unit exceeds all expectations: a 60-liter boiler, LCD display, stainless steel dividers, as well as smooth electronic ignition. The unit can be reconfigured to work with liquefied gas, which is also convenient for different living conditions.

• Brass hydrogroup;
• Rich functionality;
• Possibility of programming;
• Button control;
• Premium boiler.

• High price

Vladimir, 49 years old

Despite the high price of this device, I still decided not to save on safety and quality. The boiler has been heating my house for the third year now, it works very quietly, and also turns off in case of emergency. The boiler allows you to set the exact temperature, which is very convenient when a large family lives in the house.

Numerous reviews of gas boilers allowed us to place a model from the Ariston brand on the second line. Stylish appearance - the white body is combined with a silver electronic type control panel. Buyers are also attracted by the affordable price and basic features without unnecessary bells and whistles. This device is suitable for work in rooms up to 220 sq.m.

The rating of double-circuit wall-mounted gas boilers will allow you to determine the optimal model that matches your budget and home interior. The temperature parameters for all modifications are practically the same. More expensive variations have a multifunctional self-diagnosis system. The working life and reliability of the device is determined by the quality of the assembly and the safety of the mounted elements. devices are designed for heating rooms of various types with the possibility of simultaneous supply of hot water. Consider several brands that are recognized as leaders in the respective market.

Wolf GGG-1R-24 system ("Wolf")

In the ranking of dual-circuit, this device occupies a leading position. The device is equipped with the function of forced smoke removal, has a closed working compartment. The built-in fan allows you to adjust the number of revolutions depending on the length of the outlet pipe used.

The benefits of modification include the following:

• High efficiency.
• Mounted on the wall without side access.
• It is possible to connect to the mains with natural and liquefied gas.
• Instant start of hot water supply is provided.
• Soft start, compact dimensions and relatively low weight of 40 kg.
• Provided automatic type Wolf CGG-1K-24.
• Thermal value - 9.4-24 kW.
• The presence of a pair of heat exchangers made of copper and stainless steel.
• The expansion tank has a volume of 8 liters.
• High build quality, ease of installation, reliability of the design complement the advantages of the unit.

Bosch-6000 W ("Bosch")

In the ranking of double-circuit wall-mounted gas boilers for heating a private house, this German brand occupies a leading position. The unit is specially designed taking into account the peculiarities of the climate and energy supply of various regions of the Russian Federation. The device has wide functionality.

Its advantages:

• Ergonomic and original design.
• The compact dimensions do not interfere with the installation of equipment in small-sized residential and utility rooms.
• Stable operation is ensured even with intermittent voltage and pressure in the working pipeline.
• Fuel is saved due to the presence of high-tech elements and connections.
• Functioning of the main and bottled gas is possible.
• Improved smoke removal and fire safety system.
• Power - 24 kW.
• Type of a working chamber - the closed compartment.
• Productivity - up to 11.5 liters of hot water per minute.
• High-quality assembly and focus on working in difficult conditions in some regions of the Russian Federation.

Baxi Luna-3 Comfort 240 Fi ("Baksi Luna")

The rating of double-circuit wall-mounted gas boilers will be continued by a representative of Baxi. The model is fully oriented to work in the Russian water and gas supply system. The unit is able to fully function even when the inlet pressure drops to 5 mbar. The removable panel is equipped with a digital screen, acts as an indicator of the outside air temperature, aggregates with liquefied gas, and is equipped with a water filter element.

The disadvantages of users include the high cost and sensitive electronic control system. There are incomparably more advantages in this device:

• The node is adapted to domestic features of operation.
• The removable panel and the closed combustion chamber increase efficiency to the maximum level.
• The design is not in vain one of the best wall-mounted double-circuit gas heating boilers, the rating of which is presented in the article. This is due to the presence of a liquid crystal control screen and indicator, as well as the possibility of self-diagnosis.

Navien Deluxe 24K ("Navien Deluxe")

This brand also got into the best rating of double-circuit wall-mounted gas boilers. The device is equipped with a closed combustion chamber, which is adapted to work in domestic conditions. A functional menu and original design complement the quality characteristics along with an affordable price.

Advantages of the unit:

• A frost protection unit is provided, which operates in automatic mode, maintaining the operating temperature from 6 degrees.
• The stability of functioning is noted in the case of reduced flow of water pressure and gas pressure.
• The system comes with a remote control.

Rating of wall-mounted double-circuit gas boilers of the brand "Cheetah 23 MOV"

These units are designed for houses in the private sector and apartments that need to provide hot water and heating. The efficiency of the unit is more than 93 percent, they produce at least 11 liters of hot liquid per minute.

Advantages:

• Convenience and simplicity in management and service.
• Existence of the liquid crystal informative screen.
• Heating elements and burners are able to function independently of each other.
• There is a possibility of self-diagnostics of the equipment.
• There is a work switch depending on the season of the year.
• Complements the package with an efficient circulation pump.
• Protection against overheating, freezing and excessive pressure is provided.
• There are indicators for the presence of a flame and draft in the chimney.

The negative aspects of users include the need to install a filter at the inlet when water is supplied, as well as the arrangement of the structure exclusively in rooms with a chimney.

Valliant ecoTec plus VUW INT IV 246 ("Valliant")

From this manufacturer, wall-mounted gas double-circuit boilers have a rating of more than 9.5 points on a ten-point scale. The German unit is capable of delivering thermal power in the region of 20 kW, which is enough to heat an area up to 200 square meters in size. The device in question belongs to the class of condensing heaters. This design allows you to use less gas while maintaining the desired temperature.

Modification features:

• Aqua-Power-Plus option for power up to 24 kW.
• eBus type digital module and DIA analytical system.
• Application in places with low temperature heating mode.
• The function of air intake from the inner and outer shell is provided.

Buderus Logano G234 WS-38 ("Buderus Logano")

In the rating of wall-mounted double-circuit gas boilers of a closed type, this brand received a rating of 9.8 on a ten-point scale. The unit belongs to the powerful category, focused on heating large areas. The thermal power of the device is 38 kW. This allows for heating a space of 380 square meters.

A gas double-circuit wall-mounted boiler, whose reliability rating is one of the best, is adapted to work in domestic conditions. The device can provide not only heating, but also water heating, due to the large volume and automatic type of control.

Model Baxi Duo-tec Compact 24 ("Baksi Duo")

The Italian brand continues the rating of the best wall-mounted double-circuit gas heating boilers. The device is equipped with a closed working chamber, two heat exchangers made of stainless steel. The boiler is easy to maintain and install, adapted to work in the conditions of domestic electrical and gas supply. The minimum power is up to 5 mbar at the input.

Peculiarities:

• Compact dimensions and low weight.
• The high efficiency rate is up to 35 percent for the heating period.
• There is a mode of deep modulation modes.
• The unit is characterized by low noise and vibration levels.
• Money is saved on equipping the chimney (an analogue version with a reduced diameter and outlet of exhaust gases through the wall is available).

Power calculation options

Gas wall-mounted double-circuit heating boilers, the rating of which is given above, require the correct calculation of power during operation. Let's consider these parameters in several available versions.

• Approximately take 1 kilowatt per square meter of heated space. In this case, the maximum power of the equipment is taken into account from the average external temperatures and structural features of the room.
• The second method also does not require the use of special formulas and calculations. The operating values ​​are multiplied by a correction factor, which is 1.5 for Moscow, and 2.0 for the northern regions. For summer-type buildings that do not have good insulation, this figure increases to 4.0, taking into account the characteristics of the building, in this way it is possible to select the required value quite accurately.
• The third option is considered the most difficult. It is based on the calculation of all heat losses of serviced compartments. The scheme takes into account the maximum and minimum ambient temperatures, as well as the features of the building.

Peculiarities

It is worth noting that the rating of double-circuit wall-mounted ones shows their variety according to the type of heat exchanger and the possibility of preparing hot water. It should be noted that the block for heat exchange is carried out in a bimetric or separate design.

The first option serves as a node with a pair of circuits, which are equipped with coaxially located pipelines (pipes are placed one inside the other, larger in diameter). Such designs have fewer elements, but require careful maintenance to avoid the formation of scale and deposits.

Separate heat exchangers are heated from the primary power source, their price is an order of magnitude more expensive than paired options. They are less sensitive to salts and other intrusions in the composition of the water, but require the inclusion of additional taps and control devices. This variation allows you to get a larger volume of hot water in a certain unit of time.

Burners

These elements are divided into atmospheric types and supercharged samples. For wall-mounted models, the burners are predominantly of the built-in type. They are selected based on the required parameters and power.

Atmospheric specimens receive a working mixture of air and gas by exposure to excess pressure. This option belongs to the simplest and most common method in the category of small and medium-sized boilers. The pressurized burner receives the gas-air mixture with the help of a built-in fan. Using the ability to adjust this device, you can adjust the operating modes and power of the device. This allows you to get rid of power surges and pressure, but it is costly with an increase in noise during operation of the unit.

Air intake

This parameter is one of the most important in the ranking of wall-mounted gas double-circuit boilers in terms of reliability. There are modifications with an open or closed working combustion chamber. The first variations function by taking air directly from the serviced premises. This method is simple, but requires additional replenishment of the external cold flow. This will require a powerful ventilation system, part of the energy of which is spent on heating the incoming air.

Models with a closed combustion chamber receive flow through a separate pipeline from the street. To do this, with the help of a fan, additional traction is created. This design has its advantages in terms of economy and less dependence on the arrangement of the chimney. At the same time, it is noisier, more expensive and volatile.

Condensation or convection?

This indicator for double-circuit boilers is in first place. Convection standard models lose some of the energy along with the exhaust gases. Their efficiency is about 90 percent. This aspect increases in proportion to the temperature of the gases (the lower it is, the higher the performance of the equipment). However, there is one feature: when the operating temperature reaches above 56 degrees, a condensation effect is observed. This phenomenon has a very aggressive effect on the elements of the device, capable of bringing them to a non-working state in a couple of seasons. As a result, the maximum temperature is no more than 100 degrees, giving the rest of the heat to no avail.

The condensing wall-mounted double-circuit ones that we examined are more economical, but they require several mandatory measures. The efficiency of such models is higher than traditional models by 10-12%. Condensation is carried out directly in the equipment, which uses not only the internal temperature, but also the indicators released during condensation. The result is the so-called higher combustion value.

Such equipment is quite durable and safe. To help in choosing the best option for heating equipment, a rating of gas boilers was compiled, which were especially popular in Europe and among our compatriots in the first half of this year.

Five leaders in the production of gas heating equipment

The vast majority of heating gas equipment is represented on the domestic market of climate technology by European manufacturers, as well as some representatives of the Asia-Pacific Economic Community. Among the most popular in our country are manufacturers of gas boilers from Germany, Italy, the Czech Republic, Slovakia and South Korea.

The first line in the popularity rating is shared by German gas boilers manufactured by the Vaillant Group and Wolf. The German brand "Buderus" shares the second place among the most demanded manufacturers, with the German holding Viessmann, and the third place was taken by the Slovak concern "Protherm" and the Italian company "Baxi".

It is rather difficult to compare the technical characteristics and functionality of the products of these companies, since in many ways they are very similar to each other.

Product Overview of Leading Brands

This review should begin with gas boilers, which took first place in the popularity rating not only among our compatriots, but also among European consumers. These are the products of such German giants as Vaillant Group and Wolf.

Boiler equipment from Vaillant Group

Vaillant Group is a recognized leader in the production of heating gas boilers. In the domestic market, Vaillant Group is represented by almost all possible modifications of heating equipment:

1. Line of wall-mounted boilers. atmo TEC series with open fuel chamber, turbo TEC series with closed combustion chamber.
2. Line of floor boilers. The iro VIT series is equipped with an electronic security and self-diagnosis system, the avto VIT series are fully automated devices.

Single-circuit boiler units are indicated by the letter index VU. A feature of these heating devices is the equipment of almost all models with circulation pumps.

Double-circuit heating installations are designated by the letter index VUW. In addition, boilers of this brand are produced both in standard (PRO) and modernized (PLUS) versions. The nominal power of Vaillant boilers varies depending on the model from 12 to 36 kW.

Heating equipment from Wolf

The company's products have repeatedly been awarded certificates confirming their environmental friendliness and safety. In the domestic market, brand heating boilers are represented by:

1. Line of floor heating units. The FNG series can run on both natural gas and liquefied gas, the CHK series features an exclusive design.
2. Line of wall-mounted boilers. CGG series - double-circuit boilers, can be both with open and closed fuel chamber, CGU series - single-circuit boilers with simple control.
3. Condensing boilers of the MGK range.

Boilers for individual heating from Viessmann

The model range of Viessmann concern heating devices is represented by the Vitopend line, which includes floor and wall-mounted devices, with a closed and open fuel chamber. The performance of the units varies depending on the model and can be:

• for wall-mounted boilers from 10.5 to 31 kW;
• for floor installations up to 140 kW.

The main feature of the devices of this manufacturer is that the boiler does not turn off the heat exchanger when hot water is consumed, but simply increases productivity.

Heating equipment from Buderus

The products of this German manufacturer have become famous among our compatriots for their compactness and design features.

The line of wall-mounted devices is represented by a series of double-circuit boilers Logamax and condensing equipment Logamax plus. The floor-standing line includes the Logano series, which is a bestseller for the first half of this year.

Protherm's products

Gas boilers of this manufacturer are widely represented in Russia and occupy a strong position in the markets of Eastern Europe. The most popular models include:

• a line of wall-mounted double-circuit heating units of the Pantera series, which is perfect for heating and hot water supply of small private houses, summer cottages and individual apartments;
• a series of Cheetah, characterized by an ideal ratio of price and quality;
• modification Lynx - these are wall-mounted devices for individual heating;
• Leopard boiler models adapted for operation in gas pipelines with low pressure indicators;
• a line of floor-standing boilers Bear, which are characterized by unpretentiousness, high performance and ease of operation.

Boiler equipment "Baxi"

An overview of the heating devices of the Italian company Baxi can be started with a line of wall-mounted appliances:

• the MAIN FOUR series, represented by two double-circuit models with a power of 24 kW with an open and closed combustion chamber;
• the Fourtech line includes 6 models, including 4 single-circuit and only two double-circuit models with different versions of the combustion chamber, power from 14 to 24 kW;
• Ecofour modification differs from Fourtech only in components, the number of models, design and power are identical;
• the Luna 3 Comfort series of boilers has 6 models, including an equal number of single- and double-circuit boilers with different types of combustion chamber, power from 24 to 31 kW;
• the model range of the Luna 3 Comfort Air series is represented by two turbocharged boilers with a capacity of 24 - 31 kW;
• the Luna 3 Avant series differs from previous models in the presence of an additional condensing heat exchanger, the power of the devices is 24 - 31 kW;
• SLIM is a line of floor-standing single-circuit boilers with an open combustion chamber, represented by 11 models with a capacity from 15 to 116 kW.

The best gas boiler

Comparison of gas boiler equipment was carried out according to the following characteristics: execution (wall, floor), functionality (number of circuits), gas combustion chamber (open, closed), gas consumption, m3 / h, average cost.

In the nomination of the best floor heating boiler, Baxi Slim 2300Fi received the most votes. Double-circuit, with a closed combustion chamber. The power of the device is 29.7 kW at a gas flow rate of 3.49 m3 / h. The average cost is 44 thousand rubles.

Advantages of the device: built-in 50 l hot water tank, electronic indication and piezo ignition, multi-level security and self-diagnosis system.

The main disadvantage of the device is its high cost.

Baxi Luna 3 comfort 240 Fi won the palm in the nomination of the best wall-mounted heating boiler. This is a double-circuit device with a closed combustion chamber, with a power of 25 kW. The gas consumption at this capacity is 2.84 m3/h. The cost is 25 thousand rubles.

Main advantages: full adaptation to the peculiarities of the domestic gas supply, the possibility of programming for 7 days, a diagnostic system and multi-level protection, the availability of authorized service centers.

Disadvantages of the device: relatively high cost and sensitivity of electronics to mains voltage fluctuations.