How to choose a gas heating boiler. Which boiler is better for a private house. How to calculate the optimal value of the thermal power of a gas boiler

A gas boiler is a heating device that uses natural main gas to generate heat. This type of fuel is cheaper than electricity, which is why gas-powered devices are so popular. "Plumber Portal" will talk about the features of the equipment so that you can choose an efficient, reliable and safe single- or double-circuit gas boiler for home heating from the whole variety of these devices.

To understand which unit is better for an apartment or house, you must first study the types of gas-fired heating boilers.

Yes, household gas boilers heating can be classified as follows:

1. Material: cast iron, steel, copper.
2. By location: wall and floor.
3. By type of combustion chamber: open and closed.
4. By the number of circuits: single-circuit and double-circuit.
5. By the presence of additional functions, automation, external characteristics.

Let's analyze the types of gas boilers in more detail.

Heat exchanger material

It is worth choosing the internal heat exchanger of heating equipment very carefully, since liquid circulates inside it, and a powerful flow of thermal energy moves outside. Therefore, the material of manufacture of the heat exchanger must have good thermal conductivity, on which the efficiency of the device depends, and at the same time a high margin of safety.

Manufacturers install gas heat exchange coils made of:

• cast iron;
• of stainless steel;
• copper.

At first glance, a boiler with a cast-iron heat exchanger is the most reliable, since it is the least susceptible to corrosion. However, such units are very heavy, and very often, due to non-compliance with the operating rules of the device, the cast iron heat exchanger cracks in the zone of contact of a liquid with a very different temperature. Such a device requires more frequent washing.

In this regard, many homeowners choose to connect a steel heat exchange coil. Stainless steel devices are cheaper than copper and cast iron units. In addition, steel is very ductile, so the likelihood of cracks in areas with temperature changes is much lower. However, such heat exchangers, being in the heating circuit, quickly corrode.

Thus, the most reliable choice is a copper heat exchanger. Copper has the best heat transfer rate, is highly resistant to corrosion processes, has good ductility, and is light in weight. Copper heat exchange coils are very compact, but the high price of such devices makes it necessary to opt for less reliable, but cheaper units.

Heat exchangers also differ according to the type of internal structure: conventional and bitermal. In the first case, only one liquid circulation circuit is connected, and in the second case, two water circulation circuits can be connected simultaneously. Double-circuit boilers are equipped with two conventional heat exchangers or one bithermal coil, which is much more economical.

Combustion chamber and burner type

Heating is impossible without maintaining the combustion of gas with the help of room or street oxygen. In the first case, the heater package contains an atmospheric burner for natural circulation of air flows, and in the second case, the device is equipped with a closed burner with forced oxygen injection. In this regard, the consumer can choose a gas boiler for the house with one of two types of combustion chamber:

1. Open - to maintain the combustion process in the furnace, air comes directly from the boiler room or the room where gas equipment is installed.
2. Closed - oxygen for burning the flame is taken from the street with the help of additional ventilation or a chimney designed according to the "pipe in pipe" principle.

If we choose between a closed furnace with a turbo burner and an open chamber with an atmospheric burner, then it should be understood that an open combustion chamber will require the installation of a chimney of 5-7 meters to ensure natural draft, which is not always possible. Therefore, each individual case requires an individual approach.

Wall and floor models

Everything is very clear here - floor-standing gas boilers for heating a private house can only be installed on the floor, since their dimensions, weight and power are much larger than a wall-mounted gas boiler, which is used when space is limited. Wall-mounted gas heating boilers are usually mounted in the kitchen of an apartment building.

At the same time, the installation of a gas boiler in an apartment requires compliance with certain installation standards, which are much stricter than when a gas boiler is installed in a private house.

1. Wall-mounted appliances have a relatively small power, which averages 35 kW, since wall-mounted boilers are equipped with a copper heat exchange coil that cannot withstand too high temperatures.
2. Gas floor units are the best choice for a heating device for a private house, since such equipment can easily heat a building up to 700 square meters. There are even outdoor models that can be installed outside a residential building.

Floor double-circuit or single-circuit devices, depending on the batch configuration, can be equipped with a turbocharged or atmospheric burner. Distinctive feature turbocharged models are of high efficiency and a high margin of safety, while the unit with an atmospheric burner is more durable and less noisy, and their cost is less.

Single and double-circuit gas boiler

Considering the varieties of gas equipment for heating, one cannot fail to note its differences in the number of circuits.

A single-circuit gas boiler for heating a private house in its standard configuration is used only for heating a building, and floor or wall-mounted double-circuit devices, in addition to space heating, also supply hot water to water intake points.

In order for a single-circuit gas boiler for heating private houses to also perform the functions of double-circuit devices, you can additionally connect a boiler. But still it is better to immediately use a double-circuit gas boiler for heating houses.

Connection diagram of a single-circuit unit with a boiler:

There are also significant differences in the design of these types of heating gas equipment.

Double-circuit wall-mounted is much more compact than its single-circuit counterparts, so they are the best option for a small space with a shortage free space. At the same time, such models put forward higher requirements for operating conditions.

Since double-circuit devices heat the water in the system, in order to automatically turn on the hot water supply, it is necessary that the incoming water flow has a good pressure and therefore the consumption of hot liquid increases significantly.

In addition, dual floor version not very suitable for large areas if the water intake points are too far from the liquid heating device. This feature of double-circuit equipment is due to the fact that in this case an additional circulation pump cannot be connected.

Single-circuit devices also have design features that affect the operation and installation of gas equipment. First of all, it is worth noting the large dimensions of such units, as well as the laboriousness of the process of installing a gas boiler in a private house.

Moreover, if a boiler is included in a single-circuit system, then it can be equipped with an additional circulation pump, which will provide supply hot water to several points of water intake - a shower, a kitchen, a sink, however, the efficiency of such single-circuit heating equipment is limited by the volume of the boiler, and the cost of the system increases.

What is the best appliance for your home?

The selection of a gas boiler for a private house largely depends on the area of ​​\u200b\u200bthe room and other factors.

The technical documentation for the gas heater certainly covers information about the requirements and rated power of the device. Often the manufacturer indicates the area of ​​\u200b\u200bthe room that this boiler can heat, as well as instructions on how to install the unit.

When calculating, an experienced heat engineer should take into account:

• cubic capacity and area of ​​the room;
• climate of the region of residence;
• quality of external thermal insulation of walls; the number and size of windows, as well as what type of double-glazed windows are installed in them;
• the presence of balconies and street doors;
• heating data, etc.

In addition, it is necessary to take into account the quality of the fuel and the gas pressure in the line. A separate calculation must be made for the DHW system. And only after that, both figures are summed up, and then increased by 15-20% for the reserve, so that the boiler can cope with peak and constant load.

There are a lot of characteristics for choosing a gas boiler, but the main ones are:

1. Output power of equipment.
2. Layout device (the number of circuits, the material from which the heat exchanger is made, the type of housing).
3. Place of installation.
4. Is there automation for the safe operation of the equipment.
5. Price. It's not always cheap and poor quality.

All these points are interconnected. If there is no space for mounting the unit large sizes or the desire to install a device in the kitchen, whose appearance will be in harmony with the interior of the room, they are forced to opt for a wall-mounted model, whose power is much less compared to a floor-standing device. And if it is necessary to heat hot water, they are forced to buy double-circuit equipment.

The best models of gas boilers

Today, the market offers a wide range of this equipment in various price categories - from fairly cheap Chinese-made products, which are of rather dubious quality, to boilers with turbocharged combustion chambers and other technical bells and whistles from branded manufacturers, but the price of such devices is quite high.

There are several types of gas boilers, so when choosing equipment for your home, you need to know exactly what you need.

1. Vaillant atmoVit INT 164-564 / 1-5 is the best device for a house ranging from 50 to 150 m2. The cost is 81,000 - 100,000 rubles.
2. Bosch WBN6000-18C RN S5700 is the optimal two-circuit model for a building area from 100 to 180 m2. Price 36,000 - 43,000 rubles.
3. Viessmann Vitopend 100-W type A1JB 12 kW - the best value for money in a double-circuit condensing version for a building up to 120 sq m.
4. Ferroli Divatech F24D best option for heating and hot water supply of a building with an area of ​​100 to 240 m2. Price 40,000 - 45,000 rubles.
5. BAXI SLIM 1.490 iN is the best single-circuit unit for heating a private house from 200 to 300 m2. The cost is 70,000 - 78,000 rubles.
6. Buderus Logano G334WS-73 is an ideal model for a home with an area of ​​more than 300 m2. The cost is 315,000 - 350,000 rubles.
7. Protherm Medved 30 KLOM is the best floor-standing Proterm model with an open burner, for buildings up to 260 m2. Price 49,000 - 55,000 rubles.
8. Irbis Khoper 25 SABC is the most budgetary unit with acceptable build quality for buildings up to 250 sq. M. The cost is 33,000 - 36,000 rubles.

These companies have been presenting their products on the market for a long time and their quality has been tested by a huge number of customers. Domestic equipment ("Irbis"), although inferior in terms of ease of use and plan TTX devices manufactured by foreign companies, but they perform their main task properly.

The temperature characteristics of all models do not differ much. All boilers comply with all safety standards and norms, but more expensive models have a complex multi-stage self-diagnosis system, as well as quite effective automatic protection. The service life and reliability of the equipment are characterized by the quality of assembly and parts, and, of course, compliance with all requirements and operating standards.

Rules and subtleties of installation

Site consultants recommend strictly following the rules for installing a gas boiler. To install such equipment in the house, you must obtain permission. This opportunity will appear only after a number of the following conditions are met:

• the room must be equipped with good ventilation and a source of natural light, which will be required for maintenance of the equipment;
• in the boiler room, the ceilings should be at least two and a half meters, the area of ​​\u200b\u200bthe room should be at least 4 m2, the doorway should be at least 80 cm wide;
• the power supply system must be equipped with current and thermal protection. The choice of a voltage stabilizer for gas boilers is a separate point that needs separate consideration and needs to be given enough attention;
• The width of the chimney directly depends on the power of the boiler. For example, the power is about 30 kW, then the diameter of the chimney must be at least 13 mm;
• availability of pressure and temperature sensors;
• it is forbidden to install gas equipment in the basement;
• the gas pipeline must not be laid in fire hazardous areas;
• regardless of the type of gas pipeline (closed or open), the pipes for it must be metal;
• in the boiler room, it is necessary to have a gas level analyzer, as well as an electric valve, which, if necessary, will shut off the gas supply.

Helpful advice! To install a gas boiler, as well as draw up all the necessary documentation, you need special tools and professional skills. If you have neither of these, then optimal solution will apply to the organization that deals with this.

If you decide to change the old heating equipment to a new one yourself, then it is best to do this in the following sequence:

• flush the old heating system. If the pipes are clogged, this will significantly reduce the life of a new boiler, even of very high quality, so it is recommended to use a special compressor to eliminate blockages and dirt. If it is impossible to clean the pipes, then simply replace them with new ones;
• dismantle old equipment;
• install new equipment, taking into account all the recommendations that are in the boiler operating instructions;
• connect the boiler to the flue system. If the house does not have its own chimney, then it is better to take care of purchasing a coaxial chimney. The equipment manual usually refers to the requirements for the characteristics of the chimney. This is a rather important point, since due to the insufficient width of the chimney or its low height, most of the combustion products will enter the room;
• the boiler must be connected to the gas pipeline. You can't do it by hand. This is done only by organizations that have the appropriate permission;
• the unit crashes into the heating system and the DHW system;
• commissioning works are being carried out. They are a rather important point during installation, since the efficiency of both the boiler itself and the entire system depends on them in the future.

To install a new gas boiler, you will need to perform a number of the following steps:

• check the availability of all components - they must have a mounting template, a bar for connecting gas and water, the necessary pipelines and the boiler itself;
• select the level in order to fix the hinged bar, then attach it;
• install gas and water pipeline gaskets by removing protective plugs;
• mount the boiler itself, then connect the water circuit and the gas supply system to it;
• connect power and equipment to the chimney.

Particular attention should be paid to voltage drops. What voltage stabilizer for a gas boiler fit better, depends on the power model of the equipment itself.

Thus, before choosing a gas boiler for a private house, it is necessary to determine the requirements for its functionality. For houses where there is a boiler or a column, the purchase of a double-circuit boiler will be an irrational decision, due to the extra spending of money, but if there is a need for DHW, a double-circuit gas boiler for heating a house will be the best solution.

The key element of the heating system of a private house is the boiler. In many respects, the air temperature in the room, the general costs associated with paying for heating, depend on how high the quality of the device itself, on the efficiency of its work. Wall-mounted boilers have a major advantage over other similar heating equipment: they take up a minimum amount of free space. There are a large number on the market various models wall-mounted units, which differ from each other in a number of parameters:

• Number of circuits: single circuits are designed exclusively for heating, double circuits will also provide the house with hot water;
• A kind of combustion chamber - open (needs a natural chimney system) and closed (from it the combustion products are forcibly sent to a coaxial chimney, it is the safest);
• The presence of electrical devices;
• Type of burner: atmospheric or modulating, the power of which the boiler regulates independently.

When developing this rating of the best wall-mounted boilers of the year, we took into account all these features, we also took into account the opinion of customers, the country where the equipment was created and produced. We tried to compile the most understandable and informative rating, so that after studying it, it would be easy and simple for the reader to choose the most suitable heating boiler for his home.

10. Oasis BM-16

This boiler is allowed to be used in rooms where the air temperature is not lower than +5 degrees, it is installed in strict accordance with the gasification project. It is perfect for houses or apartments, it has high performance and good efficiency - about 92%. The design has a reliable circulation pump, which makes it easy to raise the coolant to the level of the second floor.

The average service life is about 12 years from the date of the first start. The heat exchanger is made of copper, the combustion chamber is closed, equipped with a fan to remove combustion products. The security system of the device has several levels, the boiler can independently carry out diagnostics. If errors are found, their codes are displayed on the device display, there is a built-in condensate drain. The device is economical, consumes a minimum amount of fuel. The mass of the unit is small - it is quite possible to lift it to one person.

The chimney can be used coaxial or separate. The boiler runs on natural or liquefied gas, the temperature of the coolant is regulated from 30 to 80 degrees, hot water - from 36 to 60 degrees. When equipping a hot water supply system, it must be taken into account that the minimum volume of passing water must be at least 3 liters per minute. Ignition is carried out by a built-in piezoelectric element.

Advantages:

• High reliability;
• Acceptable cost;
• Self-diagnosis with display of all errors;
• Built-in frost protection;
• The design has an expansion tank with a volume of 6 liters;
• Several programmable timers.

Flaws:

• Large overall dimensions;
• Some sensors fail quickly.

9. Haier Falco L1P20-F21(T)

Double-circuit design, equipped with a bithermic heat exchanger, the unit can be installed both in houses and in apartments. The device is characterized by the presence of several degrees of protection: it has a flame failure protection system, the circulation pump is equipped with jamming protection. The heat exchanger has a sensor that prevents overheating, excess pressure, and lack of draft.

The heat exchanger is made of copper, the burner is modulating type, made of stainless steel, the hydraulic block is made of brass. The total power of the boiler is 20 kW, the temperature of the coolant is adjustable from 30 to 85 degrees, the heated area can reach 190 square meters, the volume of the expansion tank is 6 liters. The design has small dimensions - 700 * 400 * 320 mm. Combustion products from the closed chamber are removed by means of a metal fan through a coaxial chimney. The pressure range in the heating system is from 0.3 to 6 bar.

Advantages:

• High-quality bithermic heat exchanger;
• Small size;
• Acceptable cost;
• Large heated area;
• A whole set of protective systems;
• A powerful circulation pump that easily raises the coolant to the level of the second floor.

Flaws:

• Not too convenient location of inlet and outlet pipes;
• Lack of Russian language on the control display.

8. MORA-TOP Meteor

This boiler is distinguished by a fairly simple control system, equipped with a monochrome LCD screen and two handles - one regulates the temperature of the coolant, the second is responsible for heating the water. During production, all current safety requirements were taken into account: the device is equipped with a closed combustion chamber. The boiler can be installed in place on its own - it has a small mass. The control unit is directly connected to all connected elements: it receives signals from sensors of pressure, temperature, volume of passing water, normal and emergency thermostats, and many others.

Depending on the information received, the control unit increases or decreases the amount of gas supplied. The device is distinguished by excellent efficiency, as it consumes exactly as much fuel as is required at the moment. The efficiency of the boiler is about 91%. Water is heated quickly enough - in just a few seconds. The design provides for a protective system that prevents too frequent switching on and off of the burner.

Advantages:

• Easy to manage;
• Makes minimal noise during operation
• Includes a room thermostat;
• Heat exchanger overheating protection;
• Good resistance to voltage fluctuations;
• Convenient in service;
• It emits a minimum of harmful substances into the environment.

Flaws:

• When connecting to the mains, you will definitely have to equip grounding;
• The power of the circulation pump may not be enough for the second floor.

7. Buderus Logamax U072-12K

This boiler has a closed combustion chamber, it is perfect for any heating system in a private house, it has a very convenient control. He looks very attractive. The case is made of thin-sheet stainless steel, the assembly is reliable, there are no backlashes. Initially, the device was developed exclusively for complex climatic conditions.

The control system is based on the OpenTherm protocol: it is very reliable, exactly fulfills all user requirements, the setting is fine, up to a degree, which cannot but affect the efficiency of the device. It more than covers household needs - one such boiler is enough to create a heating system in a house with an area of ​​\u200b\u200babout 120 square meters. Double-circuit boiler, flow type, dispenses about 12 liters of water per minute - this is quite enough for a family of three to four people or three water distribution points.

Advantages:

• Small overall dimensions;
• Light weight;
• Perfectly withstands significant voltage drops: up to 30% up or down;
• Does not fade when the gas supply decreases;
• Has frost protection systems;
• Virtually no noise during operation;
• Piezo ignition;
• The size of a flame is regulated at the expense of an ionization electrode;
• Well suited to the Russian climate.

Flaws:

• The exhaust fan quickly fails;
• Pump power is often not enough if there is a second floor;
• Flimsy feed faucet.

6 Viessman Vitopend 100

This design is chimney and turbocharged. The first is allowed to be connected to the central chimney, which creates a natural draft to remove combustion products. The turbocharged device is intended for installation in a room where there are no special exhaust systems. All waste here is removed outside the building due to a special fan.

The body of the boiler is made of reliable stainless steel, the assembly is reliable, there are no backlashes. The power of the equipment is in the range from 10.7 to 23 kW. In the heating system, a pressure of 3 bar can be obtained. Inside the boiler is an expansion tank with a volume of 6 liters. The coolant warms up to a temperature of 85 degrees, hot water - up to 57 degrees. The DHW capacity is no more than 11 liters per minute, depending on the temperature.

On the front panel there is a liquid crystal display, a power button, a pressure gauge and two levers that are responsible for the temperature of the coolant and water. Additionally, you can purchase a room thermostat that facilitates the operation of the unit.

Advantages:

• Made exclusively from high quality materials;
• Does not make noise during operation;
• Small overall dimensions;
• By production only modern technologies are used.

Flaws:

• Great cost;
• High price for components and spare parts;
• Hydraulic tubes are made of composite materials, which can cause them to fail quickly.

5. Navien DELUXE 16A White

This is a fairly good wall-mounted boiler, which is characterized by high-quality assembly and a long period of operation. The device is of a double-circuit type, it withstands low temperatures well, largely due to the presence of a frost protection system. The circulation pump automatically turns on when the room temperature drops to 10 degrees and begins to intensively distill the coolant, preventing it from freezing. When the water temperature in the system drops to 6 degrees, the burner turns on, increasing this figure to 21 degrees.

Gas is consumed quite economically, which has a positive effect on the life of the heat exchanger and the boiler itself. The device is able to work even at a minimum gas pressure of 4 mbar. The unit withstands serious voltage drops in the network, works stably when the water pressure drops in the system. The kit comes with a remote control, there is also a voice assistant. Under the front panel is a control unit equipped with a digital monochrome display.

Advantages:

• Well withstands drops in water, gas and voltage;
• Acceptable cost;
• Convenient control by means of the remote control or due to the block on the panel.

Flaws:

• In some cases, automation fails;
• Weak pressure of hot water;
• Makes a lot of noise during operation
• The system of automatic diagnostics of the device is not provided.

4. Bosch Gaz 6000 W WBN 6000-24 C

Designed for space heating up to 240 square meters, the boiler is equipped with a closed combustion chamber, plate-type heat exchanger. It is capable of delivering about 11.5 liters of hot water per minute, combustion products are discharged outside the room using a coaxial chimney with a diameter of 60/100 mm.

The control unit has sensors that control the size of the flame, are responsible for automatic ignition, fan speed. Also, the boiler is equipped with a three-stage pump and an expansion tank with a volume of 6.5 liters.

The case is rectangular, on the front side there is a control panel equipped with a liquid crystal display, a pressure gauge showing the pressure in the heating system, and several adjustment buttons. All branch pipes for connecting communications are located below, which ensures ease of installation.

Advantages:

• Quickly warms up the air in the room;
• Installation is easy;
• High efficiency, low gas consumption;
• A large number of individual settings;
• There is a piezo ignition.

Flaws:

• Sometimes it gives atypical errors - to eliminate them, it is enough to disconnect the boiler from the network for a couple of minutes;
• The circulation pump vibrates strongly during operation;
• Condensation sometimes forms in the tubes of the differential relay.

3.NAVIEN Ace-24A Atmo

This is a wall-mounted boiler for a house or apartment, which is perfect for even the harshest climatic conditions. It has good efficiency indicators, is able to last for quite a long time, easily withstands low pressure of water, gas, and ensures stable operation even with significant voltage drops.

Despite all these positive traits, the device is not too expensive. The assembly of the boiler is reliable, there is a heat exchanger, which is characterized by good speed, due to which hot water is provided literally a few minutes after the boiler is turned on.

Branch pipes are located on the sides of the body, so the strapping can be done both on the left and on the right side, thanks to which the installation is carried out even in rather cramped conditions. A new generation gas burner ensures silent operation of the boiler.

Advantages:

• Good level of security;
• Small overall dimensions;
• Easy to use;
• Acceptable price.

Flaws:

• The circulation pump is a little noisy, otherwise the boiler is perfect.

2. Baxi MAIN 5 24F

Italian high quality equipment, which rightfully ranks third in our ranking of the best wall-mounted gas boilers. It is a two-circuit mounted type boiler equipped with a closed combustion chamber, turbocharged. The equipment is designed for connection either to a coaxial chimney or to a two-pipe flue system. The device consists of a gas burner, the nozzles of which are made of stainless steel, the heat exchanger is bithermic.

The Grundfos brand circulation pump is equipped with an automatic type air vent, electronic automation is concentrated on a special board. The volume of the expansion tank is 6 liters. In addition, the boiler is equipped with several sensors: heating, hot water, draft, flame level. The maximum power of the unit at the highest loads is 24 kW, it is designed for reliable heating of a house up to 220 square meters. It has small dimensions - 700 * 400 * 280 mm.

For ease of control, the boiler is equipped with a liquid crystal monochrome display and several buttons responsible for adjusting the temperature of the coolant and hot water, an automatic equipment diagnostics system is provided, if errors are detected, their codes are displayed on the display.

Advantages:

• All necessary functions are provided;
• Small size;
• Acceptable cost;
• A large number of service centers.

date latest update articles: 01/11/2019

For heating private houses, it is most advantageous to use gas heating equipment. This is due to the fact that gas is still considered the cheapest type of fuel. Such equipment is safe, economical and efficient.

We present to your attention the rating of gas boilers, compiled on the basis of feedback from consumers and specialists. If you decide to install in the house gas heating, then the overview of the devices below will help you navigate the variety of gas-fired boilers.

Gas boilers are divided into two types.

convection

The most common among boilers. The principle of its operation is quite simple. Gas through the burner nozzles enters the combustion chamber, where the flame flares up. It heats the heat exchanger with water, which enters the radiators through pipes and heats the room. As soon as the water temperature has reached the required temperature, the heating stops. The products of combustion are removed through the chimney. The efficiency of such a boiler is 90%. The remaining ten literally fly out into the pipe.

If the outlet temperature is below 57 degrees, then condensation will form on the walls of the combustion chamber, heat exchanger and chimney, which can lead to breakdowns, soot formation, and also to a reduction in the life of the device.

To prevent this from happening, as well as for more efficient use of thermal energy, a new type of boiler was designed.

Condensing

The efficiency of this device reaches almost 100% due to the fact that the energy is fully used for heating and no longer “flies into the pipe”. This was achieved with the help of another heat exchanger - a water economizer. That's where the couple carbon monoxide are cooled until condensation occurs, which accumulates in a separate tank. When the vapor is converted into a liquid, useful thermal energy is released, which is transferred to the coolant.

The condensing boiler is bulkier and is usually installed in a separate room. The cost of the device is twice as much as that of traditional boilers.

Popular brands

Demand creates supply, which is probably why the market for gas heating equipment is so large. The more manufacturers, the more new models appear in stores. For an inexperienced user, this is Difficult choice, especially since few people are familiar with well-known brands. Still, this is a piece goods, I bought it once and forgot for a long time.

Which manufacturer's products should be considered reliable and of high quality?

• wolf. The German company produces boilers with very high efficiency. It is not yet very well known in the CIS, but it deserves the closest attention. Even budget models are of good quality and have built-in automation to ensure the most efficient operation.
• Vaillant. Also a German manufacturer. The products of this brand occupy more than twenty-five percent among other companies in the European market, which indicates quality, reliability and popularity.
• Bosch. This brand does not need advertising, it has long been a recognized leader in the production of equipment.
• STS and Bentone. Swiss companies. They have expensive products, but very high quality.
• Ariston, Beretta, Lamborgini and Ferroli. The Italians have firmly occupied the middle price segment. Their products are good value for money.
• Dakon. The Czech manufacturer produces budget models. German quality components are used here, modern systems automation, as well as careful quality control.

Just do not think that Russian companies do not produce quality products. By purchasing equipment of domestic manufacturers, the user can count on low cost, reliability and durability, high performance, as well as the availability of components and good after-sales service.

• "Zhukovsky Machine-Building Plant". Produces heating equipment for over 40 years. In some boilers it uses imported automation. None of the models is independent of the mains. Efficiency - up to 92%. High degree of reliability and long service life.
• Borinsky. This plant has been dealing with boilers for more than two decades. Almost all models are equipped with high-quality foreign automation, are non-volatile, have a relatively modern design and affordable cost.
• Lemax. The Taganrog plant offers gas boilers with a special coating of heat exchangers that protects against corrosion. Models are also produced with cast-iron heat exchangers, which are rightfully considered the most reliable. All equipment has high efficiency and is non-volatile.

Rating of gas boilers - an overview of the best appliances

To choose the best gas boiler for heating a private house, we recommend that you carefully read the most popular models among domestic consumers.

12th place. Oasis RT-20

It is used as the main heating device in apartments and houses with autonomous heating. Also responsible for hot water supply. Copper heat exchanger has good thermal conductivity, which increases work efficiency.

With the help of the electronic panel, convenient and understandable control is carried out. The user only needs to set the required temperature.

A well-thought-out pricing policy allows you to purchase a high-quality multifunctional unit at an affordable cost.

What are users saying?

Advantages:

• electronic control;
• good power;
• completely safe;
• build quality;
• compact size, does not interfere;
• modern design.

Flaws:

• few functions;
• there is no clear instruction for setting up hot water, you have to experiment by typing;
• too small expansion tank;
• turbine noise.

Gas boiler Oasis RT-20 20 kW double-circuit

11th place. Protherm Bear 30 PLO

Excellent floor gas boiler for private homes. It works to provide heating, and complete with a boiler - for hot water supply. It is ignited using a piezoelectric element.

Combustion products are discharged naturally, in the presence of a chimney, or forcedly using a turbo attachment.

You can adjust the power by switching steps on the control panel.

What are users saying?

Advantages:

• heats a 3-storey house without problems (radiators and underfloor heating);
• easy to manage;
• you can connect the boiler;
• power adjustment;
• cast iron heat exchanger.

Flaws:

• the turbocharger is very noisy;
• the boiler rots in 5-7 years. Replacement is too expensive.

10th place. Baxi NUVOLA-3 Comfort

This is a real mini-boiler room, which includes not only a boiler for heating the house, but also a boiler that constantly maintains the desired DHW temperature. Thanks to this, you will not have problems with adjusting the water from the tap.

Using a room thermostat, the boiler automatically regulates heating depending on the weather outside. The coaxial chimney is not subject to freezing.

This perfect solution for those who need comfortable hot water supply and stable high-quality space heating.

What are users saying?

Advantages:

• reliable and stable operation;
• there is always hot water in the shower;
• high level of quality;
• you can connect "warm floors".

Flaws:

• complex remote control. It took a long time to deal with the remote control;
• Would like more hot water
• expensive pleasure;
• weak pneumatic relay.

Gas boiler BAXI NUVOLA-3 Comfort 240 Fi 24.4 kW double-circuit

9th place. MORA-TOP Meteor Plus PK24KT

The reliable and safe copper works absolutely silently. Does not leak and does not break for years. Despite small size, it perfectly copes with its task - heating the house and providing hot water.

Easy to connect, has a simple and clear control. Multi-layered protection provides security.

What are users saying?

Advantages:

• economical, low gas consumption;
• wall-mounted, does not take up much space;
• there is always hot water;
• power saving mode.

Flaws:

• not cheap;
• after turning off the gas, the boiler is turned on manually.

Gas boiler MORA-TOP Meteor Plus PK24KT 23 kW double-circuit

8th place. Oasis BM-18

The boiler has a bithermic heat exchanger, that is, one circuit is built into another. It is convenient, reliable and more economical than traditional models. But for efficient operation, it is necessary to monitor the quality of the water, as scale and lime deposits can lead to breakage.

Good performance and a copper heat exchanger allow you to quickly heat the house, as well as provide its inhabitants with hot water. Energy costs are minimal.

Warranty - 2 years.

What are users saying?

Advantages:

• nice appearance, does not look like a monster;
• convenient and clear control panel;
• heats up water quickly
• safe.

Flaws:

• no remote control;
• battery ignition.

Gas boiler Oasis BM-18 18 kW double-circuit

7th place. Lemax Premium-20

The body of the boiler is made of high-quality two-millimetric steel and meets all the necessary standards. The heat exchanger is cylindrical, which ensures stable operation at pressures up to three atmospheres.

The unit does not depend on electricity, is equipped with multi-level protection. The top panel is easily removed, the boiler is convenient to clean.

Product warranty - 3 years.

What are users saying?

Advantages:

• inexpensive for such power;
• simple;
• easy to clean;
• gas consumption is small;
• works silently;
• even in the most severe frosts the house is warm;
• Italian automation;
• safe to operate.

Flaws:

• strains the steel heat exchanger, let's see how long it lasts;
• heavy and bulky, he needs a separate room;
• makes noise;
• unfinished automation.

Gas boiler Lemax Premium-20 20 kW single-circuit

6th place. Baxi LUNA-3 COMFORT 310Fi

A modern double-circuit unit is designed to continuously supply the house with heating and hot water. It is equipped with a removable digital panel, which also functions as a temperature sensor.

The boiler pleases with high efficiency - over 93%, which indicates not only efficient operation, but also efficiency. A nice feature is the ability to work in a wide pressure range, which is especially important for our country, where all kinds of drops often occur.

What are users saying?

Advantages:

• good performance;
• Italian assembly;
• reliable model;
• spare parts are always in the store;
• instant heating of the coolant;
• powerful pump.

Flaws:

• the backlight of the display falls into "sleep mode", it is inconvenient;
• no hot water circulation;
• the pressure sensor is inconveniently located;
• weak point - fan and pneumatic relay;
• nozzles for liquefied gas must be purchased separately.

Gas boiler BAXI LUNA-3 COMFORT 310 Fi 31 kW double-circuit

5th place. Lemax Premium-12.5

The domestic manufacturer is literally ousting the famous brands from the market. Excellent quality and complete lack of flaws. At correct installation and operation, this floor-standing boiler works efficiently and significantly reduces gas costs.

What are users saying?

Advantages:

• does not depend on electricity;
• powerful enough;
• economical;
• high performance;
• easy to manage;
• easy to connect to the heating system;
• Italian automation.

Flaws:

• not found.

Gas boiler Lemax Premium-12.5 12.5 kW single-circuit

4th place. Oasis BM-20

The wall-mounted boiler has forced water circulation, which ensures uniform heating. Safe to work and easy to use. The boiler can be hung on the wall in any room - kitchen, attic, basement.

The positive aspects are that the chimney designed during construction is not required, so the unit can be used in apartments with autonomous heating.

The model is equipped with bithermic copper heat exchanger with high performance, which simplifies the design and ensures greater reliability. Excess condensate is discharged into a special container.

The service life is at least 12 years.

What are users saying?

Advantages:

• decent inexpensive unit;
• the quality of work is excellent;
• good design and cost;
• works quietly.

Flaws:

• a water filter is required;
• boiling water flows immediately;
• the ignition is powered by batteries, often you have to change them;
• low-quality automation;
• disposable dubious product.

Gas boiler Oasis BM-20 20 kW double-circuit

3rd place. Bosch Gaz 6000W WBN 6000- 12C

A wall-mounted gas boiler is able to provide a high level of thermal comfort and the constant availability of hot water. It has a pleasant appearance, is hung on the wall and does not occupy a usable area. On the front panel there are control buttons and instructions for the user.

It is calculated on heating of the area not less than 120 square meters. Unpretentious to changes in pressure and voltage. The primary heat exchanger is made of copper, which improves thermal conductivity. Hot water is heated by a plate heat exchanger.

With low gas consumption, it has high performance.

What are users saying?

Advantages:

• compact;
• fit well into the interior;
• silent;
• economical;
• many precise settings;
• You can set it up yourself using the internet.

Flaws:

• Chinese assembly, solid marriage, designed for a year of work;
• dependence on electricity;
• too much plastic;
• parts are hard to find.

Gas boiler Bosch Gaz 6000 W WBN 6000-12 C 12 kW double-circuit

2nd place. Baxi ECO Four 24 F

The Italian-assembled boiler is designed for heating and hot water supply, including in the summer. The range of features is beyond praise. Can be connected to the "warm floor" system.

The combustion chamber is turbocharged. There are seven levels of protection. Heating area - at least 180 square meters.

What are users saying?

Advantages:

• reliable and unpretentious;
• easily converted to liquefied gas by replacing the nozzle;
• average price category;
• fully adapted to Russian conditions;
• summer/winter mode.

Flaws:

• Expensive;
• spare parts and components are not cheap;
• noisy;
• poor quality buttons on the control panel;
• sensitive to voltage drops;
• capricious electronics, a year later the control panel failed;
• volatile.

Gas boiler BAXI ECO Four 24 F 24 kW double-circuit

1st place. Vaillant turboTEC plus VU

Despite its size, the boiler practically does not take up space, as it hangs on the wall. It is designed for space heating, as well as for water heating.

A feature of this model is a "hot start" - when you open a tap with hot water, you do not need to wait until the heating starts, warm water will run immediately.

What are users saying?

Advantages:

• German assembly;
• the boiler is powerful, but economical in terms of gas consumption;
• copper heat exchanger evenly distributes heat;
• quality materials inside and out;
• digital control with LCD screen;
• multi-speed pump.

Flaws:

• turns off during power surges, a stabilizer is required;
• high price;
• began to buzz when the water was heated;
• depends on electricity.

Gas boiler Vaillant turboTEC plus VU 242/5-5 24 kW single-circuit

What features to look out for

In order to correctly and competently choose a gas boiler, carefully consider the following criteria.

• Power. The most important parameter. It completely depends on the area of ​​the heated premises and the specific coefficient for the region of residence. For example, if you live in the middle lane, then the value of the coefficient for every 10 m² is 1-1.2 kW, in the south - 0.7-0.9 kW, in the north - 2 kV. To calculate the power of a boiler for a house of 300 m² in a temperate climate, you need to carry out the following calculations: 300 * 1/10 \u003d 30 kW.
• Mounting method. Boilers are wall and floor. The first ones are compact, do not take up much space, are silent and affordable. The second ones are more powerful, bulky, and often require a separate room for their installation.
• The number of contours. Single-circuit devices are designed only for heating, double-circuit devices also provide hot water supply.
• Safety. It is desirable that the boiler be able to automatically turn off in all abnormal and emergency situations.

Important factors when choosing a device are the consumption of gas and electricity, efficiency, the availability of programmable conditions for night and day heating, price.

• Be responsible for calculating power. If it is not enough, then the room will heat up for a long time and cool quickly. A powerful boiler, on the contrary, will lead to overheating - this is an unprofitable use of resources.
• If there is no separate, well-ventilated room and chimney, then a natural draft floor boiler will not suit you. It is better to opt for wall-mounted boilers with forced draft.
• Do you already have hot water? Then you should not spend money on a double-circuit boiler.
• A biometric heat exchanger requires high-quality water without impurities. So if you do not have a water filter built into the water supply system, then you will not save on such a boiler, because scale in the heat exchanger is guaranteed to lead to a breakdown.

Conclusion

As you can see, the choice of a boiler should be treated responsibly and with knowledge of the nuances. It is better not to rely on chance, but to turn to professional gas workers. They will help to correctly calculate the power and advise which boilers are suitable for heating your premises.

Master of Architecture, graduated from the Samara State University of Architecture and Civil Engineering. 11 years of experience in design and construction.

To understand the operation of gas boilers, it is necessary first of all to study the device of these devices. They usually consist of the following parts:

• Burner. With its help, the heat exchanger is heated.
• Heat exchanger. Designed to transfer heat to the coolant circulating through the heating system of the house.
• Control system. Required for power control and process control.
• Device for removing residues of combustion products.

The operation of a gas boiler resembles that of a conventional gas stove when burning natural or liquefied fuel heats a container of water. In the heating boiler, water is heated through a heat exchanger. Hot water circulates through the pipes, getting into the radiators and giving off heat energy to the rooms, resulting in the heating of the house.

The control system allows you to adjust the required power to create a comfortable microclimate by reducing or increasing the gas combustion flame.

What to look for when choosing

It is best to select a device for use at home with a professional who has experience in installing these units. When choosing on your own, you should pay attention to the following main characteristics.

Location type

If it is possible to select separate area for boiler room equipment, it is best to choose a floor boiler. These devices are affordable and easy to use. Floor boilers are often equipped with reliable cast iron heat exchangers, since weight in this case does not really matter.

The limited space makes it necessary to purchase wall mounted boilers. Modern models such boilers are made in the form of rectangular or square devices with small dimensions.

Parapet boilers, which also belong to wall-mounted products, are more expensive, but they are energy independent and carry out smokeless combustion, which is important for ensuring a normal microclimate in the house.

Number of circuits

If the device is purchased exclusively for organizing heating in the house or only for hot water supply, it will be enough to purchase a single-circuit model. If you want to combine both functions in one device, it is recommended to use dual-circuit type devices.

Single-circuit devices can be equipped with boilers in which water is heated for hot water supply, but in such a situation, the load on the device increases significantly, which leads to rapid wear of the main elements.

Type of heat exchanger

The service life and quality of the heat exchanger depends on the material from which it is made. Cast iron is considered the most reliable - they are durable and do an excellent job with temperature loads.

Copper heat exchangers are also highly resistant to high temperatures, besides, they are quite easy to repair in case of leaks. Steel products serve much less than cast-iron heat exchangers - they quickly become slagged, as a result of which they are subject to frequent replacement.

In dual-circuit devices, double or separate heat exchangers are used. The best solution would be to choose a device with separate elements, which, due to this, will last much longer.

Combustion chamber and type of ignition

The type of combustion chamber depends on the type of oxygen supply to the apparatus. In open-type chambers, oxygen is supplied from the room in which the apparatus is located; an artificial oxygen supply is organized into closed chambers.

To organize the heating of a city apartment, it is better to purchase boilers with closed turbocharged burners, since such devices are easy to install, equipped with a coaxial chimney and have a high efficiency.

Boilers with an open combustion chamber are installed in separate boiler rooms with the obligatory organization of a chimney, which will provide the necessary draft.

To ignite the gas in the burner, piezo or electric ignition is used. With frequent problems with the supply of electricity, a system based on piezoelectric elements will be more reliable, and in the absence of such problems, electric ignition is used.

Possibility of adjustment

Additional control functions allow more efficient use of fuel, increase the efficiency of the boiler and maintain the required level of safety during the operation of the device.

In a single-stage adjustment, the only option for turning the boiler on and off is provided, and when the device is equipped with a modulator, it becomes possible smooth adjustment intensity of gas combustion. Automatic adjustment takes place according to the specified parameters and can function without the owner's control in offline mode.

The safety of the boiler operation is ensured by pressure and combustion sensors, which send a signal to the control panel of the device, as a result of which the boiler operation is corrected or it is completely turned off in emergency situations.

Power

This characteristic allows you to determine the capabilities of the boiler to ensure sufficient heating of water in the heating network of a house or garage and the organization of hot water supply. Manufacturers indicate the power in kW in the instructions, and often recommend the size of the area that this device allows to heat.

In devices manufactured for heating the coolant at home, power values ​​\u200b\u200bcan vary from 8 to 40 kW.

How to determine the required power

An accurate calculation of the required boiler power for a particular room can only be made by a specialist, but there are approximate consumption rates for one square meter living area.

For districts middle lane In Russia, it is 1 kW per 10 m 2, for areas with long winters and low temperatures, it is recommended to take into account 1.5 kW for the same area, and for warm climatic zones, 0.8 kW is enough.

A coefficient of 10-20% should be added to the value obtained by calculation, which will make it possible to compensate for the need for heat in case of abnormal weather changes in the area.

Popular manufacturers, models and prices

In the rating of gas boilers for heating a private house, mainly foreign brands have established themselves. The most reliable products are manufactured by the German concerns Wolf, Vaillant, Bosch and Buderus, the Italian plant BAXI, the Slovenian company Protherm and the manufacturer from South Korea Navien. Cheaper, but also high-quality devices are produced by the Zhukovsky MZ and the Concord enterprise.

The best floor boilers

The highest quality brands of single-circuit outdoor devices include:

It is considered the most economical device. Power 30 kW, open type combustion chamber. The heat exchanger is made of cast iron, the unit is equipped with an automatic system for adjusting to weather conditions. Intermittent ignition. Pros: compact dimensions, attractive design, durability. Cons: high price (from 120 thousand rubles).

Power 25 kW, open type combustion chamber. To provide hot water, an additional boiler is required. Atmospheric open type burner, electric ignition, automation allows you to smoothly change the power.

Display showing the main operating parameters, cooling circuit. Easy to assemble, as this model comes from production ready for use. Pros: compactness, easy installation, reliability. Cons: Remote control not included. The cost is from 52 thousand rubles.

The best models of floor condensing devices include:

Power 34 kW, the possibility of linking with external equipment for organizing hot water supply. Modeling burner, multi-touch control panel, digital parameter analytics, electronic ignition, built-in flame control.

Pros: economical gas consumption, attractive design, durability. Cons: high cost from 170 thousand rubles, the need to purchase a device to eliminate the effects of power surges.

The best domestic models of floor boilers:

AOGV-23.2-3 Comfort N. This floor-standing apparatus is equipped with piezoelectric ignition and automatic control, capable of functioning in forced and natural circulation systems of the coolant.

Relatively cheap boiler - cost from 25 thousand rubles. This model belongs to environmentally friendly devices. Pros: low cost, reliability, unpretentiousness, maintainability, energy independence.

The best wall-mounted boilers

The best models of convection-type wall-mounted devices include:

Double-circuit unit with a closed type combustion chamber and forced smoke removal. Power from 10 to 25 kW, two heat exchangers, weight about 40 kg, the possibility of generating hot water up to 12 l / min.

The device is able to operate both on natural fuel and liquefied. Pros: durability, easy installation. Cons: rather high cost (from 60 thousand rubles), but the quality of this gas heating boiler compensates for its cost.

The device is specially prepared for operation in the networks of the Russian Federation - this model is able to function with pressure surges in the gas network. Digital control, the ability to consume different types of gas.

Pros: full adaptation to domestic conditions, uninterrupted operation during network surges, copper-plated heat exchanger, the ability to connect equipment for organizing hot water supply, a unit protection system, an established system of warranty and post-warranty service. Cons: cost from 55,000 rubles, for the stable functioning of digital equipment, you will need a stabilizer.

The best models of wall-mounted condensation-type devices include:

Power 19 kW (there is a special function that allows you to increase the output up to 25 kW), low gas consumption, digital control, electronic ignition, the heat exchanger is made of stainless steel. Pros: modern performance, reliability, compactness. Cons: tangible cost from 95 thousand rubles, the need to purchase a stabilizer.

The device is equipped with two heat exchangers, the material is stainless steel. This brand provides the ability to adapt to different conditions operation (variable pressure, type of fuel). Pros: compactness, low cost from 52 thousand rubles, efficiency with good efficiency, durability. Cons: the need to purchase a stabilizer.

This review will allow you to determine which gas boiler is best for a particular situation, and will facilitate the choice. suitable model from the list of the most popular devices.

It is advisable to entrust the installation of a gas boiler for heating a private house to experienced installers. Independent work with sophisticated technology lead to unpredictable results and serious accidents.

The main task of the owner of a summer house or apartment is to prepare the premises for the installation of the unit. A floor-standing boiler will require a boiler room, a wall-mounted appliance is placed in a suitable place inside the house.

To mount the floor-standing appliance, it is necessary to prepare a base with a height of 150 mm or more, ensuring free access to the boiler from all sides. For volatile devices provide grounding.

Related videos

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 a closed combustion chamber. Many modern boilers are equipped with built-in pumps for forced circulation of 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 off the received thermal energy through radiators, underfloor heating, heated towel rails, and also providing water heating in the boiler indirect heating(if it is connected to a gas boiler).

Heat exchanger - a 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 they internal surfaces protect with various anti-corrosion coatings, providing an extension of 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-mounted 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, a 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. 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 heating of water 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 to LPG(ballooned propane). Many models switch to liquefied gas at the factory (check these characteristics of the model when purchasing), or nozzles (jets) are additionally supplied to the gas boiler to switch 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. It includes: pumps, expansion tanks, filters (if necessary), manifolds, check 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