Rating of gas boilers - which is the most reliable? Brands of gas heating boilers

Today's market for heating equipment will satisfy the needs of any buyer, and offers for gas boilers are no exception. Here you can find many models of both budget units and expensive top-end equipment. In conditions of such saturation, it is difficult to determine which gas boiler is the most reliable, especially if you have not had to buy these devices before.

Statistics on the sale of these units by dealers and analysis of popularity among consumers various models gas heating boilers allow you to create and publish such a dynamic factor as the rating of this equipment, which will help an inexperienced buyer.

Appearance of modern gas heating boilers various designs

Why choose a gas boiler?

The installation of heating equipment that consumes gas as a fuel has a number of advantages and even advantages over using units on other types of fuel:

high equipment efficiency;
wide range of prices for gas boilers;
no need to create fuel reserves;
affordability of the price of this natural energy carrier;
high degree of automation of gas heating boilers.

By purchasing such an installation, the buyer, of course, counts on the heat in the house, the safety of the boiler and the durability of this equipment.

Regardless of the model and manufacturer, the heating temperature of the coolant is approximately the same for all gas boilers. In addition, before being released to the market, the units undergo mandatory testing for compliance with safety standards, top-end models are equipped with self-diagnosis and multi-level protection systems.

After analyzing the service life, the need for repairs and feedback from experts, buyers, up to ten models of gas boilers can be distinguished, characterized by a high degree of efficiency, safety and ease of use.

Rating of wall-mounted gas boilers

Wolf CGG-1K-24

Double-circuit gas water heating unit manufactured in Germany Wolf CGG-1K-24 wall-mounted

Wolf CGG-1K-24 (made in Germany) - the most reliable wall-mounted double-circuit gas boilers with a closed combustion chamber with forced smoke removal.

Important! Carbon dioxide is removed and oxygen is supplied through separate or concentric chimneys (air ducts) - a special sensor independently regulates the fan speed depending on the length of the pipe for removing combustion products.

Advantages:

high quality and efficiency;
rationality of placement - the possibility of mounting close to the wall;
the possibility of using main or liquefied gas (after replacing the nozzles and making changes to the settings);
fast heating of water;
soft start;
compact dimensions;
light weight (weight up to 45 kg);
reliability;
long warranty (24 months).

Flaws:

high cost (52-55 thousand rubles).

Baxi Luna-3 Comfort 240 Fi

Double-circuit gas boiler Baxi Luna-3 Comfort 240 Fi wall placement

The wall-mounted double-circuit gas boiler from Baxi is perfectly adapted to the specifics of work in the CIS countries. It works even with minimal gas supply. The equipment has a removable digital panel, which allows you to install it in any convenient place. It also acts as a temperature sensor in the room. Works on fuel from the highway or a cylinder. A filter is provided for the water supply. The equipment has high quality performance and excellent functionality.
Advantages:

stable operation at low gas pressure;
closed combustion chamber;
special anti-corrosion coating of copper components of the heat exchanger;
the ability to connect an additional boiler for a hot water supply system;
two heating modes (normal and underfloor heating);
timer with programming for a week;
it is possible to connect an outdoor temperature sensor;
digital monitor, which indicates all the necessary information;
electronic self-diagnosis.

Flaws:

high cost (45-47 thousand rubles);
sensitivity of electronics to power surges - it is necessary to connect through a stabilizer.

Bosch Gas 6000W WBH 6000-24C

From a well-known German company, it was created adapted to climatic conditions Russian regions, as well as the peculiarities of domestic electric and gas networks.

Double-circuit heating boiler Bosch Gaz 6000 W WBH 6000-24C (Germany) wall-mounted

Advantages:

compactness;
modern design;
high efficiency;
stability of work at constantly changing gas pressure;
the ability to connect to a cylinder or line (after changing the nozzles of the burners and adjusting);
modern chimney system;
high security;
ideal price / quality ratio;
high quality assembly.

Flaws:

rather high cost (27 - 33 thousand rubles)
small thickness of steel body parts.

Navien Deluxe 24K

Double-circuit boiler with combustion chamber closed type, unit high functionality. It has a closed combustion chamber. Adapted to working conditions in the post-Soviet space.

Double-circuit gas boiler increased functionality Navien Deluxe 24K

Peculiarities:

Built-in frost protection - if the temperature of the liquid in the heating system drops to 10 degrees, the pump automatically turns on; with further cooling to 6, the burner starts until the water reaches 21ºС.
Stable operation at low pressure in the gas and water pipes - the system operates at the respective rates of 4 bar and 0.3 bar.
Control panel provided.

Advantages:

separate stainless steel heat exchangers;
modulated boost, which increases efficiency;
quality copper internal components;
affordable price;
high quality assembly;
wide functionality.

Flaws:

fluctuating outlet water temperature.

Protherm Cheetah 23 MOV

These devices are perfect for installation in apartments and country houses. They represent double-circuit boilers, which allows you to heat water and simultaneously heat the room. Efficiency - up to 93%.
Advantages:

ease of management;
monitor showing all necessary information about the operation of the device;
automatic diagnostics;
several modes - underfloor heating, comfort and winter / summer;
the option of connecting automation that monitors the weather is provided;
built-in pump;
protection against freezing and overheating;
works from the gas pipeline or a cylinder.

Wall-mounted gas heating boiler Protherm Cheetah 23mov

Flaws:

it is imperative to install a separate filter on the incoming water in order to protect the boiler system from salts;
the possibility of installation only if there is a chimney in the housing.

Rating of wall mounted condensing gas boilers

Vaillant ecoTec plus VUW INT IV 246

Wall-mounted gas boiler manufactured in Germany Vaillant ecoTec plus VUW INT IV 246

German gas boiler. The thermal power of the unit is 20 kW, which allows it to be used for heating housing up to 200 square meters. m, the device is designed for stable heating of water and heating. To increase the water temperature in the pipeline, a latent condensation system is additionally switched on, due to which it is possible to achieve the declared performance with significantly lower fuel consumption.

Peculiarities:

Built-in power boost function in DHW mode.
It is also used for low-temperature heating systems.
External and internal oxygen supply to sustain combustion.
Backlit display.
Electronic ignition.
Stainless steel heat exchanger.
Built-in pump.
Expansion tank for 10 liters.

Advantages:

modern design;
high quality;
economy.

Flaws:

connects to a common network only through a voltage stabilizer;
high cost (75-77 thousand rubles).

Baxi Duo-tec Compact 24

Inexpensive boiler, made in Italy, with a closed combustion chamber and stainless steel heat exchangers. The model has a simple and convenient control. Installation of the unit is not technically complicated.

Important! The device has a system for adapting to different operating conditions. Even with a drop in gas pressure, the rated power is maintained.

Gas heating boiler made in Italy Baxi Duo-tec Compact 24 with LCD display

Advantages:

light weight;
compactness;
high efficiency;
low noise and vibration levels;
profitability;
quality components and solid build.

Flaws:

dependence on the parameters of electricity in the network;
rather high cost (45-53 thousand rubles).

Rating of floor single-circuit gas boilers

Viessmann Vitogas 100-F GS1D870

Gas single-circuit boiler Viessmann Vitogas 100-F GS1D870 floor version

This model is a single-circuit gas boiler with an open combustion chamber. His thermal power is more than 27 kW. Due to the small dimensions, there are no installation problems - it can even be located in small room. The products of this manufacturer are always of high quality.
Advantages:

high efficiency;
heat exchangers are made of gray cast iron;
weather-dependent automation;
intermittent ignition system;
silent start;
compact dimensions;
modern design;
economical work.

Flaws;

high cost (141-143 thousand rubles).

Prothrem Bear 30 KLOM

The equipment is a single-circuit boiler, which is made in Slovakia. It has an open combustion chamber. Heat exchangers are made of high quality cast iron. Perfect for heating residential buildings, industrial premises and summer cottages.

Single-circuit gas boiler for floor placement Protherm Bear 30 KLOM

Advantages:

electric ignition;
atmospheric burner made of stainless alloys;
smooth power adjustment;
informative monitor;
protection of components from condensate;
cooling circuit;
winter / summer mode is provided;
compact dimensions;
simple installation;
reliable assembly.

Flaws:

open type combustion chamber;
rather high price (45-55 thousand rubles);
the need for a chimney.

What kind of boilers to use? On the market of thermal equipment today there are many models of units from various manufacturers, which have different modifications. But from this set, it is necessary to choose devices that have an optimal price / quality ratio, taking into account the required power and functionality.

The modern market is really saturated heating technology from different manufacturers. This also applies to heat generators using natural gas. Even if you know all the necessary parameters well, it will not be easy to choose among the many brands. In this article, we decided to compile a general rating of gas boilers, whose goal will be to help the average user decide and make the best choice.

Types of gas boilers

For a general understanding, we first introduce brief classification heat generators. They are divided into different types according to several criteria:

according to the method of fuel combustion and flue gas removal: these are units with an open (atmospheric) and closed (supercharged) combustion chamber;
in terms of the efficiency of using the heat of combustion of gas: there are 2 categories here - conventional and condensing boilers;
in terms of functionality: this refers to the ability of a heat source to heat water for the needs of hot water supply, this is one - and double-circuit gas boilers.
by installation method. According to this criterion, heat generators are divided into wall (suspended) and floor.

Advice. Before proceeding with the choice of brand, you should select the unit according to all of the above criteria.

On the Internet, you can find a variety of ratings of gas boilers, but we decided to present a rating of the most popular brands in the post-Soviet space, dividing them by countries where the manufacturing companies are located. So, to start -

Western European manufacturers

It just so happened that residents of the CIS countries divide European brands into 3 groups: German, Italian and “everyone else”. We, too, will not break away from the people and take a look at the most famous brands of these groups in turn, and start with the German ones:

BUDERUS;
VIESSMANN;
VAILLANT;
Bosch.

For reference. Since 2003, Buderus AG has been owned by the Robert Bosh GMBX concern.

The first 3 brands are leaders and trendsetters in the field of heating boilers, BOSCH joined them a little later. All of them produce the best gas boilers imaginable. The corporate colors blue for BUDERUS, red and gray for VIESSMANN are well known to a wide range of users.

The first 2 brands offer the widest range of heat generators of all types and capacities. At the same time, VAILLANT and BOSCH focused on wall-mounted boilers. Yes, and the reviews of homeowners sound very eloquent: if you take floor unit, then BUDERUS or VIESSMANN, and if wall-mounted, then VAILLANT or BOSCH is better. But they all have the following characteristics in common:

high quality products;
reliability in operation;
constant introduction of the newest technical solutions;
high efficiency (efficiency up to 97%);
the widest range of functions;
a complete set of process automation tools.

Unfortunately, topping the rankings for quality, german boilers firmly hold the lead in value. This is the highest price category and products of these brands are not available to everyone. Somewhat cheaper than other VAILLANT and BOSCH, but not by much. Boiler maintenance is just as expensive.

If we compare boilers made in Italy and Germany, then the former clearly win in price. Most Popular Brands:

BAXI;
ARISTON;
BERETTA.

The BAXI trademark can compete in reliability and quality with the "Germans", it is not without reason that it has gained wide popularity in Russia and other post-Soviet states. The range of their products is just as wide and covers the entire domestic area - from simple floor-standing boilers to wall-mounted condensing ones. Just like German manufacturers, BAXI heat generators are efficient and fully automated, from ignition to control over the phone or via the Internet.

Having just appeared on our market, the brands ARISTON and BERETTA demonstrated good performance at a democratic price. Years later, the rating of double-circuit gas boilers of these brands fell, many negative reviews concerning the reliability of work, the quality of components and materials. AT given time products, despite the reasonable cost, are not very in demand. Well-known wall-mounted gas boilers and columns of these manufacturers, floor models bought much less often.

From the group of “everyone else”, a brand stands out sharply, firmly settled in the middle price category and gaining popularity in our market at an accelerated pace. This is the Slovenian brand PROTHERM, which has already gained a reputation for its reliable thermal technology. wall and floor standing boilers, offered by the Slovenian manufacturer, may not be as stuffed with the latest achievements in the field of heat engineering as the "Germans", but they are affordable, reliable and adapted to the realities of the CIS countries.

Positive feedback about PROTHERM boilers is heard not only from users, but also from the masters who install them. This suggests that the maintenance of equipment is also relatively inexpensive.

Asian manufacturers

From Asian boilers for heating, 2 can be distinguished famous brand and a whole group of products from the Middle Kingdom, which are rather difficult to list, and not necessary. People have long had their own opinion about Chinese technology, in confirmation of this we will add that buying a Chinese boiler is a lottery, no matter how attractive the price is. We will not consider them, nor recommend them, the decision to purchase these products is made by everyone for himself.

One of the world famous South Korean manufacturers of wall and floor gas boilers is KITURAMI. We must pay tribute to the products of this trademark: they are very reliable and high-tech, have all the same functions as the "Germans" and are just as well automated. The problem is that KITURAMI also "bites" the price and then the trademark's eminence begins to play a role, and here European brands win.

As for the reviews, they are mostly positive, that is, this "Korean" is on the same level as BAXI boilers and Bosch. Also, the design of the unit is adapted to low gas pressure and other delights of the Russian hinterland. Definitely recommended for use.

Another, already budget version of a gas boiler for the home, is the Korean unit of the NAVIEN trademark. Appeared on our market relatively recently and has since taken root well. Known for its wall-mounted heat generators, which have the full range of necessary functions and a good degree automation. Despite the obvious budget, received a lot of positive feedback. Breakdowns happen, but they are fixed quickly and inexpensively. NAVIEN is the technique they talk about - optimal ratio price quality.

Conclusion

As you can see, it is not easy to choose a gas boiler even among manufacturers. If funds allow, you should not fall below the average price category, where the "Chinese" and the boilers of the CIS countries are located. We did not talk about the latter, since they do not lead any ratings. By and large, such boilers are a body made by us, equipped with imported automation, sometimes again Chinese.

Many owners of private houses and industrial buildings are switching to heating system 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 is installed, will it lose appearance over time and how long it will last - it all depends on right choice boiler suitable for specific premises. 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 boilers are in the greatest demand: they allow you to heat a large area, are reliable and have wide range power - 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, having bought a floor-standing gas boiler Russian production, 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 supply hot water. 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 - open camera uses the air of the room, and exhausts the exhaust gas through the chimney, closed (turbo) contains fans that take in air from the outside and send combustion products there. Boilers with open type combustion work on the principle 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 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

Choosing heating equipment 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:

large weight and dimensions;
inability to regulate temperature;
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 performs disconnection / connection of 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 power when purchasing a boiler, as well as periodic manual ignition igniter in cases of protection operation. In addition, economy-type appliances require a mandatory annual maintenance procedure before the start of the season.

But on Zhukovsky gas heating boilers floor price 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 high efficiency (80 - 92%), a high degree of reliability and have 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, differ in terms of 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%. To important advantage Borin heating appliances can be attributed to the durability of the budget series AOGV and AKGV 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 we should take into account some comparative characteristics cast iron and steel models.

Steel heat exchangers:

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

Modern steel grades correct 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 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 heating boilers, the prices of which are significantly lower than similar offers from 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"

Engels Plant of Heating Equipment "Signal" in recent times gain popularity. His 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 one and dual circuit models, 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 such a variety is represented on the Russian market heating equipment produced in Russia and the CIS at a relatively equal and affordable price, which makes it possible in the same price range to choose a model that meets the requirements for all key parameters.

Many 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, quiet 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 heating appliances, which can be easily converted to gas. The company offers gas boilers in three types, both single-circuit and double-circuit, hallmarks most of which is a special coating of the steel heat exchanger, which 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.

Benefits of installing a gas boiler for heating in Russia are obvious: gas supplies are more stable, it will not be turned off unexpectedly, and gas is cheaper than electricity. What do we need from a good gas boiler? To keep the house warm, so that the device is safe and lasts a long time.

Temperature indicators for all models are approximately the same. All heating boilers comply with safety standards, but more expensive models have a complex multi-stage self-diagnosis system, effective protective automation. Reliability and service life are determined by the quality of parts and assembly (and, of course, you must follow the rules of use!). We studied the opinions of experts and customer reviews and selected best models gas boilers that combine reliability, safety and efficiency.

First, let's figure out which manufacturers of gas boilers deserve our attention in the first place.

Which company's gas boiler is better?

The vast majority of gas boilers in our stores are imported. Mostly European. In our opinion, the rating of the best foreign manufacturers of gas boilers looks like this:

Wolf (Germany)
Vaillant (Germany)
BAXI (Italy)
Protherm (Slovakia)
Bosch (Germany)
Buderus (Germany)
Navien (Korea)

and some others.

Among our domestic manufacturers gas boilers, we distinguish two plants:

Zhukovsky Machine-Building Plant (ZHMZ). Produces boilers brands AOGV(single-circuit, heating) and AKGV(two-circuit, heating and hot water).
OOO Zavod Conord. Located in the city of Rostov-on-Don. Produces gas boilers and columns CONORD, solid fuel boilers DON, industrial boilers and other equipment.

A heating gas boiler is a device that, by means of the combustion of fuel (natural or liquefied gas), heats the coolant.

The device (design) of a gas boiler: burner, heat exchanger, thermally insulated housing, hydraulic unit, as well as safety and control devices. Such gas-fired boilers require a chimney to be connected to remove combustion products. The chimney can be either a conventional vertical or coaxial (“pipe in pipe”) for boilers with closed camera combustion. Many modern boilers are equipped with built-in pumps for forced circulation water.

The principle of operation of a gas boiler- the coolant, passing through the heat exchanger, heats up and then circulates through the heating system, giving the received thermal energy through radiators, underfloor heating, heated towel rails, as well as providing water heating in the boiler indirect heating(if it is connected to a gas boiler).

Heat exchanger - metal container, in which the coolant (water or antifreeze) is heated - can be made of steel, cast iron, copper, etc. The reliability and durability of a gas boiler depends on the quality of the heat exchanger in the first place. Cast iron heat exchangers are resistant to corrosion and have a long service life, but are sensitive to sudden temperature changes and are quite heavy. Steel containers can suffer from rust, so their internal surfaces are protected with various anti-corrosion coatings that prolong the “life” of the device. Steel heat exchangers are the most common in the manufacture of boilers. Corrosion is not terrible for copper heat exchangers, and due to the high heat transfer coefficient, low weight and dimensions, such heat exchangers are often used in wall boilers, but of the minuses, it should be noted that they are more expensive than steel ones.
In addition to the heat exchanger, an important part of gas boilers is a burner, which can be various kinds: atmospheric or fan, single-stage or two-stage, with smooth modulation, double.

To control the gas boiler, automation is used with various settings and functions (for example, weather-compensated control system), as well as devices for programming operation and remote control of the boiler.

Main technical specifications gas heating boilers are: power, number of heating circuits, type of fuel, type of combustion chamber, type of burner, installation method, presence of a pump and expansion tank, automatic control of the boiler.

To determine required power gas heating boiler for private country house or an apartment, a simple formula is used - 1 kW of boiler power for heating 10 m 2 of a well-insulated room with a ceiling height of up to 3 m. If heating of a glazed basement is required winter garden, rooms with non-standard ceilings etc. the gas boiler output must be increased. It is also necessary to increase the power (about 20-50%) when providing a gas boiler and hot water supply (especially if water heating in the pool is necessary).

A feature of calculating the power of gas boilers: the nominal gas pressure at which the boiler operates at 100% of the power declared by the manufacturer for most boilers is from 13 to 20 mbar, and the actual pressure in gas networks in Russia can be 10 mbar, and sometimes even lower . Accordingly, a gas boiler often works only at 2/3 of its capacity, and this must be taken into account when calculating. In more detail with a table for calculating the power of a heating boiler, you can

Most gas boilers can switch from natural gas operation to liquefied gas (ballooned propane). Many models switch to liquefied gas at the factory (check these model specifications when buying), or to gas boiler injectors (jets) are additionally supplied for switching to bottled gas.

Pros and cons of gas boilers:

Boiler piping- These are devices for the full operation of the heating and water supply system. Includes: pumps expansion tanks, filters (if necessary), manifolds, return and safety valves, air valves, valves, etc. You will also need to purchase radiators, connecting pipes and valves, thermostats, a boiler, etc. The issue of choosing a boiler is quite serious, so it is better to entrust the selection of equipment and its complete set to professionals.

What is the best boiler? The Russian market of gas boiler equipment has its own leaders in quality and reliability. The best manufacturing companies and brands of gas boilers are presented in the range:

"Premium" or "Lux"- the most reliable and durable, easy to manage, the kit is assembled as a "constructor", more expensive than the others. These manufacturers include German companies