In our review you will find the 9 best gas boilers, which can be purchased at long years will provide you with warmth and hot water. Before that, we advise you to study some of the nuances of choosing gas boiler for a house or apartment.

The right choice - double-circuit or single-circuit?

As is known, by the number of contours gas boilers It is customary to divide into single-circuit and double-circuit. Which one is better? The correct choice depends on the main purpose of the device.

Single-circuit ones are designed exclusively for the operation of the main coolant (radiators, pipes, etc.), that is, they are purchased to provide heating. Most often, such devices are installed in dachas and in places where there is no water supply. In this case, a boiler is purchased for a single-circuit boiler to heat water in an autonomous water supply system.

Double-circuit boilers are 2-in-1 devices. They can both heat a house and provide hot water supply. The coolant and boiler in such a device are assembled into one unit. If hot water is not consumed, the coolant circulates in the heating circuit. As soon as the user opens the hot water tap, the system switches the valves so that the coolant is directed to the second circuit. This is the most popular type of gas boilers, which are installed in most apartments and houses.

Heating power

The more powerful the boiler, the higher its cost. In order not to overpay extra money and eliminate additional costs in the future (the more powerful the boiler, the more resources it consumes), it is important to calculate what power gas boiler you need. An approximate calculation is as follows: per 10 sq. m of a well-insulated room (ceiling height up to 3 m) should account for 1 kW of boiler thermal power. For a poorly insulated room, another 30 - 50% is added to the thermal power indicator.

For country house for 50 sq. m. it is enough to purchase a gas boiler with a capacity of 7 - 12 kW. But for a house with an area of ​​200 square meters. m. you will already need a more powerful device: 23 - 25 kW. Most modern double-circuit gas boilers produce a thermal output of 24 kW.

When choosing boiler power there is one more important detail. If you take a device that is too powerful for small room(for example, a 24 kW boiler for studio apartment 40 sq. m.), then the boiler will quickly heat the coolant and turn off. As soon as the water cools down, the boiler will start again. Constant switching on and off will happen very often, which will be, to put it mildly, “straining.” In turn, a boiler with less power will ensure smooth combustion, and switching on and off will occur much less frequently.

Which company should you prefer?

The highest quality and most reliable gas boilers are produced by Italian, German and South Korean companies. Even taking into account the fact that many companies will locate their production in China, purchasing a gas boiler from a popular brand is better than buying a little-known device.

To make your choice easier, we list the best manufacturers of gas boilers:

• Navien (South Korea)
• Bosch (Germany)
• Ariston (Italy)
• Baxi (Italy)
• Buderus (Germany)
• Vaillant (Germany)
• Protherm (Slovakia)
• Viessmann (Germany)
• Kiturami (South Korea)

Voltage stabilizer for a gas boiler - is it necessary or not?

After purchasing a gas boiler, it is advisable to install a voltage stabilizer. Especially if your network suffers from frequent voltage surges. The fact is that if the boiler fails due to a power surge, it will not be possible to exchange the device under warranty. The requirement for network quality is specified in each warranty agreement. Therefore, it is better to spend an extra 3 - 5 thousand rubles for a device with a power of up to 1 kW (and you don’t need a powerful stabilizer for the boiler) than to lose tens of thousands of rubles in the end.

The best wall-mounted gas boilers up to 24 kW

The main advantages of wall-mounted gas boilers are lower price and compact placement. They are more preferable for rooms with limited space. For example, for an apartment. The disadvantages of wall-mounted models are lower power and shorter service life, unlike floor-standing devices.

3 Navien DELUXE 24K

Best ergonomics at an affordable price
Country: South Korea
Average price: RUB 31,816.
Rating (2017): 4.5

Gas boiler Navien DELUXE 24K is maximum comfort when minimum costs. A double-circuit thermal energy generator is used for sequential heating of premises with a total area of ​​up to 240 sq.m and satisfying household and economic needs in hot water with a capacity of up to 13.8 l/min at 35 °C. Distinctive feature heating device in the material of the primary heat exchanger - stainless steel. This fact slightly reduces the efficiency of the unit to 90.5%, but extends its durability due to the reliability of high-alloy steel.

Comfortable use hot water installation is ensured due to a convenient display and clarity of control and measuring instruments, an adapted room regulator with a remote control. The ease with which prompt intervention in the cyclic operation of the boiler is carried out allows us to significantly reduce the consumption of blue fuel during operation.

Stable work noted in reviews electronic circuit under conditions of periodic voltage fluctuations in the supply network, amounting to +/-30% of 230 V. Uninterrupted functionality is determined by the presence of the SMPS (Switched-Mode Power Supply) protective chip, which complements the microprocessor. The combustion process in a closed chamber takes place without harmful failures or stops, which has a positive effect on the service life of the equipment, excluding breakdowns.

2 Baxi MAIN 5 24 F

Best in terms of price-quality ratio
Country: Italy
Average price: RUB 33,820.
Rating (2017): 4.5

The Baxi MAIN 5 24 F gas boiler is the best example of a double-circuit unit in the line of biothermal heating devices. An engineering solution that combines heating circuit with the preparation of water for hot water supply in a single water supply unit, which made it possible to significantly reduce the cost of a wall-mounted unit compared to heat generators equipped with separate heat exchangers. However, there was no significant decrease in performance indicators. The boiler's power is sufficient to heat an area of ​​240 sq.m and prepare 9.8 l/min of hot water at 35°C.

The heat generator is designed to operate on natural and liquefied gas with a wide range of pressure in fuel pipelines. When connected to centralized gasification lines, the coverage ranges from 13 to 20 mbar. A high pressure threshold of 37 mbar is allowed when powered from mobile and stationary gas tanks. This indicator indicates the high reliability of the boiler’s fuel equipment.

Customer reviews emphasize that the most popular options for a gas unit are the ability to connect external control: room regulators, weekly programmers and the provided interface with low-temperature heating circuits (warm floors).

Video review

Which heating boiler is better? Table of advantages and disadvantages of four types of boilers: gas convection, gas condensing, solid fuel and electric.

1 Ariston EGIS PLUS 24 FF

High efficiency with maximum reliability
Country: Italy
Average price: RUB 38,690.
Rating (2017): 4.5

The Ariston EGIS PLUS 24 FF gas boiler is one of the most popular models, released by Italian designers back in 2007. This is a double-circuit heat-generating unit designed for heating premises through a water circuit and meeting the need for hot water in everyday life. The priority functionality of the device is to ensure uninterrupted operation of the hot water supply system. Conceptual solutions made it possible to place a membrane-type expansion tank with a volume of 8 liters in a compact housing, which makes it stand out thermal installation among similar models from other manufacturers.

The features of a closed combustion chamber, combined with the forced emission of exhaust gases, position the heating device as the best boiler in its class in terms of combustion energy efficiency. The calculated efficiency with professional power settings based on the heated volumes reaches 94.5%. Numerous positive reviews indicate that with average insulation of buildings, the maximum consumption of natural gas per hour does not exceed 2.73 cubic meters.

The gas boiler meets modern safety requirements. The design provides for automatic detection of malfunctions in the operation of the unit, protection against unauthorized leakage of blue fuel, and prevention of overheating of the primary heat exchanger made of copper. The thermal energy generator is equipped with a relief valve overpressure in system, automatic device to remove air from the water circuit and circuits that prevent freezing and blocking of the circulation pump.

The best inexpensive floor-standing gas boilers - budget up to 30,000 rubles

Floor-standing gas boilers are considered more reliable and durable. They cost more than wall-mounted models, but they are superior in power and can heat rooms from 200 square meters. m. For installation of floor-standing boilers, it is recommended to use separate room(boiler room).

3 Navien GA 17KN

The best ratio of price and functionality
Country: South Korea
Average price: 38,900 rub.
Rating (2017): 4.5

A more functional and technologically advanced floor-standing boiler in the budget segment is a model of South Korean origin - Navien GA 17KN. This is the only device in our review that has a closed combustion chamber. The advantage of a closed chamber is that air is taken from the street and not from the room. Thus, there is no need to install a chimney and ventilation.

Navien has the best efficiency of 91.2% and is equipped with an electronic control module. Electronics provides a huge list of advantages:

• Display
• Auto-ignition
• Power-on indication
• Flame modulation
• Auto diagnostics
• Frost protection
• Overheat protection

The boiler is equipped with another useful function - a programmer. This allows you to set the gas boiler operating mode for a certain time interval (day, week, month). That is, the boiler will independently maintain the desired temperature without human intervention, which has a positive effect on energy savings.

2 Focus of AKGV - 23.2 MU

Best price. Non-volatile boiler
Country Russia
Average price: RUB 19,769.
Rating (2017): 4.0

Budget boiler from Russian manufacturer, Ochag company. The best price in our review. The efficiency indicator of the "AKGV - 23.2 EM" is one of the lowest in the rating, and the device is also demanding on good pressure in gas network. But its advantages lie elsewhere. In addition to a very affordable price, “Ochag” is a non-volatile boiler. Ignition in such a device is carried out manually, that is, the boiler does not require connection to the electrical network. “AKGV focus - 23.2 EM” will never suffer from voltage surges. It has a simple and safe design.

The main condition for the successful operation of a non-volatile gas boiler is correct installation pipeline and chimney with good draft. The only downside is that if the gas supply is turned off, ignition will have to be done manually.

1 Lemax Premium-25B

Largest heating area at an affordable price
Country Russia
Average price: RUB 27,360.
Rating (2017): 4.5

Lemax Premium-25B is an inexpensive floor-standing convection-type gas boiler. Produced in Taganrog. Capable of efficiently heating a house up to 250 square meters. m. with an efficiency of 90%. The low price of the device is due to steel structure heat exchanger. This material is more susceptible to corrosion than copper and cast iron heat exchangers. In other matters, the developer has provided a special thermal insulation coating with inhibitors, which should significantly reduce heat exchanger corrosion.

The boiler is equipped with everything necessary for safe operation of the system: heat exchanger overheating sensor, thermometer, gas control. There is an automatic ignition - ignition is carried out automatically. This indicates higher reliability and efficiency compared to devices with piezo ignition. The nominal pressure of natural gas is 13 mbar, that is, the boiler will operate at full capacity even at low pressures in the gas network (which is not uncommon in Russia). This is the best indicator in our review of budget floor-standing boilers.

It is worth noting that the Lemax boiler is intended for open system heating, therefore, when purchasing it, the house must have a chimney to remove combustion products.

Most user reviews speak of Lemax’s “indestructibility” and almost silent operation. This is an economical and trouble-free boiler at an affordable price, with a 3-year manufacturer's warranty. One of the best offers in the budget segment.

The best double-circuit floor-standing gas boilers: price - quality

3 Navien GA 35KN

The most economical among powerful gas boilers
Country: South Korea
Average price: 42,180 rub.
Rating (2017): 4.5

The top three best double-circuit gas boilers again included a model from a South Korean manufacturer. This time in the list of the best floor-standing models in terms of price and quality ratio. Like many other models in the Navien GA 35KN line, it stands out for its good economy and efficiency. The efficiency is 91.4%, and the natural gas consumption is 3.34 cubic meters. m/hour.

The device can provide a home with hot water and effectively heat an area of ​​up to 350 square meters. m. And this with a weight of only 86 kg - this is 2.5 times less than the weight of models from Baxi and Protherm.

"Navien GA 35KN" is one of the most affordable powerful convection boilers with electronic control. In 2016, the device could be purchased for only $700.

2 Protherm Bear 40 KLZ

Quality and reliability
Country: Slovenia
Average price: RUB 116,588.
Rating (2017): 5.0

A high-quality device, according to numerous user reviews, is the Slovenian gas boiler “Protherm Medved 40 KLZ”. By functionality the boiler is almost comparable to the device from Baxi, although it costs slightly less. The main difference between Protherm is the type of combustion chamber. It is open here, so the installation of a chimney is required for the boiler to operate. Maximum thermal power device is 35 kW - one of the best indicators in the review.

The heat exchanger material here is also cast iron, there is a built-in circulation pump, expansion tank and air vent.

1 Baxi SLIM 2.300 Fi

Best functionality and quality
Country: Italy
Average price: RUB 131,838
Rating (2017): 5.0

If you are looking for a high-quality and modern gas boiler from a trusted manufacturer, then Baxi SLIM 2.300 Fi is one of the best options. This is the most expensive device in our review, with a price tag of $2,000. But, for those who don’t like to skimp on quality, best option difficult to find.

The double-circuit “Baxi” can heat a cottage with an area of ​​up to 300 square meters. m. with an efficiency rate of 90%. Can work in closed system heating due to the built-in circulation pump. The built-in expansion tank will maintain optimal pressure in the heating system, accepting excess heating and replenishing losses when cooling the coolant. Baxi SLIM 2.300 Fi is one of the best boilers for underfloor heating.

The primary heat exchanger material here is the best - cast iron. As you know, cast iron is resistant to corrosion, durable and reliable. From additional functions It is worth noting the air vent, safety valve and protection against pump blocking.

Baxi SLIM 2.300 Fi is one of the best-selling floor-standing gas boilers in the middle and high price segment.

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

During operation of a gas boiler, condensate is formed, which can be used to generate thermal energy. This is what happens in boilers of the condensing operating principle, where additional energy from the condensate is generated using a special heat exchanger (economizer). This undoubtedly increases the efficiency of the device.

Installing a condensing boiler allows you to save up to 20% on gas costs. Thus, the efficiency of a conventional convection boiler is on average 92%. While a condensing boiler is capable of operating at an efficiency of 109%. True, purchasing a condensing model will be somewhat more expensive than a convection model and, perhaps, such a decision will be justified when heating sufficient areas.

2 Baxi Duo-tec Compact 1.24

Best price. The best single-circuit condensing boiler
Country: Italy
Average price: RUB 54,479.
Rating (2017): 4.7

Second place in the rating is Baxi Duo-tec Compact 1.24, one of the most affordable condensing-type gas boilers. Despite the low price, the power of the device is 24 kW with an efficiency of 105.7%. This is an excellent model to install in country cottage or a summer house, since the boiler can operate on liquefied gas with a minimum flow rate of 1.92 kg/h. If desired, Baxi Duo-tec Compact 1.24 can be connected to the heated floor system. The built-in expansion tank will compensate for the expansion of the coolant. The Duo-tec Compact series features easy installation, simple operation and the ability to adapt to gas quality. They operate with a power modulation ratio of 1:7.

It is a pity that the boiler is single-circuit and can only be used for the heating system.

1 Ariston GENUS PREMIUM EVO 24 FF

The best indicator of efficiency (gas consumption 2.33 cubic meters/hour)
Country: Italy
Average price: RUB 78,143.
Rating (2017): 4.8

The first place in the rating of wall-mounted condensing boilers is deservedly occupied by Ariston GENUS PREMIUM EVO 24 FF. This is the model with the best indicator of economical consumption of natural gas. According to the technical specifications, the device consumes only 2.33 cubic meters. m/hour with a maximum thermal power of 22 kW. Hence the high efficiency rate of 108.1%. The boiler is double-circuit, so it can be used for both heating and domestic hot water. To maintain optimal pressure in the heating system, the device is equipped with an 8-liter expansion tank. It is also worth noting the presence of electronic control, display, copper heat exchanger and protection against pump blocking.

When choosing a gas boiler for heating a private home, we are faced with a huge selection of equipment. Buyers can choose from single-circuit and double-circuit models, wall-mounted and floor-mounted, atmospheric and turbocharged, simple and multifunctional. How to understand all this diversity and really do right choice– our detailed review will tell you.

IN this material we will tell:

• About the main types of boilers for heating private houses;
• About the advantages and disadvantages gas equipment;
• About the features of certain devices.

We will also provide information about the calculation required power and provide user reviews.

Types of gas boilers

How to choose a gas boiler for heating a house is known to every specialist involved in the installation of heating systems. First of all, you need to decide on the basic equipment requirements. Gas boilers are divided into the following categories:

• Wall and floor;
• Single-circuit and double-circuit;
• With open and closed cameras combustion;
• Convection and condensation.

There are also volatile and non-volatile modifications. Let's look at the above criteria in more detail.

Choice of gas heating equipment heating a private home begins with choosing a place to install equipment. Everything is simple here - if there is space for a separate boiler room, you can limit yourself to a floor-standing model. If there is room for floor mounting no, we pay attention to wall modifications.

Floor-standing boilers are often made on the basis of reliable cast-iron heat exchangers - these models have a significant margin of reliability, they are unpretentious and do not cause problems in operation, practically do not leak and can operate for many years without failures or breakdowns. Besides, floor models gas boilers for private homes are characterized by high power - if you have a large household at your disposal, feel free to choose modern floor-standing boilers.

Wall-mounted devices are distinguished by their compactness. In my own way interior design they resemble the most common ones instantaneous water heaters, only instead of flowing tap water, they heat the coolant circulating through the heating system of a private house. The power of individual models can be very high, up to several tens of kilowatts.

Single-circuit and double-circuit models

To heat private houses, the simplest gas boilers with one circuit are often used. They are extremely different simple device– they contain a burner and one heat exchanger. These units are able to work exclusively in heating systems, prepare hot water they don't know how. Such boilers are produced in two versions - floor-mounted and wall-mounted.

Double-circuit modifications combine two units at once - this is a flow-through gas water heater and boiler. Priority is given to the DHW circuit; during its operation, the heating is switched off. The design of double-circuit boilers is complex; there are three way valves, as well as combined or separate heat exchangers. But they are more functional and easier to install and operate.

The main advantage of double-circuit gas boilers used for heating and hot water preparation is their compactness - they take up several times less space than separate equipment.

Before us is another division of gas boilers - they are divided into modifications with open and closed combustion chambers. Models with open cameras combustion is often called "atmospheric" because air flows to the burners by gravity, taken directly from the room in which the equipment is installed. As for combustion products, they are removed through a regular chimney with natural draft.

The main advantages of “atmospheric” models are more simple design, low noise level, energy independence (typical for certain models that are not connected to the mains).

Turbocharged gas boilers for home heating are models with closed combustion chambers. The air for their operation is taken from outside the buildings, through a special two-layer chimney. Smoke removal is carried out through the same chimney. Fans are installed above the combustion chambers, which are responsible for removing smoke and air intake. Boilers with closed combustion chambers can be installed in any premises of private houses.

The disadvantages of turbocharged models are reduced reliability due to more complex design, noise and increased power consumption (the fan alone consumes about 100 W).

Convection and condensation

Gas boilers for heating a private house are most often built using a convection scheme. It's simple:

• The burner generates thermal energy;
• The heat exchanger takes the resulting heat;
• The heat is sent to the heating system, and its remains are sent to the atmosphere.

As a rule, the efficiency of such boilers varies between 90-93%. Consequently, up to 10% (and sometimes more) of thermal energy simply escapes into the atmosphere.
Condensing gas boilers are built according to a slightly different scheme - here in heating systems Almost all the generated heat is taken away. As a result of the work, condensate is formed and sent to the drainage. Developers claim that the efficiency of such units is over 100%, but we know that it is impossible to get more than invested. Therefore, the highest numbers are a classic marketing ploy.

According to data from manufacturers, condensing boilers can save up to 10-15% of gas fuel when compared with conventional convection models. In practice these figures may be lower.

Advantages and disadvantages of gas boilers

One of the most important advantages gas heating is its price, and if there is a gas pipeline next to your house, then there is no point in thinking about other types of fuel.

The use of AGV and gas boilers for a private home for heating purposes promises certain benefits. To begin with, it should be noted that natural gas is cheap - it is cheap, and its combustion releases a huge amount of energy. Operating electric boilers is more expensive, and liquid and solid fuel models are not particularly convenient. Other advantages of gas boilers:

• Fully automated operation - heating on gas equipment requires virtually no user intervention and works in automatic mode(only temperature adjustment is required);
• Low fuel costs - only comparable to free firewood from the neighboring forest;
• Ready to work at any time of the day or night – just activate the heating on the control panel. The same solid fuel boilers will require preparation for ignition and subsequent cleaning;
• Minimal maintenance - usually performed once a year. But with liquid and wood boilers much more fuss;
• Electrical safety - many models of gas boilers for heating private houses can operate without access to the electrical network.

There were also some disadvantages:

Gas is very explosive, so do not neglect the rules for operating gas equipment.

• Difficulty in connecting to the gas network - permitting documentation will be required to start the equipment;
• Mandatory, albeit minimal, maintenance - you can’t do without it;
• The gas is explosive - if there is a gas leak, an explosion may occur;
• The need for separate rooms for some types of boilers - e.g. floor-standing stoves with open combustion chambers require separate boiler rooms.

Nevertheless, gas boilers have been and remain an inexpensive solution for organizing heating in private residential buildings.

An undeniable advantage of gas boilers is their ease of use. And if there is no gas mains connected to a private house, then the solution is simple - we use a bottled gas connection. True, its quality does not always meet the standards - because of this, burners, heat exchangers and chimneys quickly become dirty.

Types of heat exchangers

Boilers with copper heat exchangers have proven themselves in the heating equipment market.

If you want to buy a gas boiler for heating a private home, pay attention to the differences in the heat exchangers used. They can be copper, steel, bimetallic and cast iron. Copper heat exchangers are made from purified copper and have good performance characteristics. They can easily carry thermal overload, they rarely leak and are characterized by high heat capacity.

One of the main advantages of copper heat exchangers is their ease of repair - if leaks are detected, they can be soldered with the most ordinary high-power soldering iron.

Steel and bimetallic heat exchangers cannot be called the most reliable and practical solution. They are prone to burning out quickly, and their inner space quickly becomes clogged with waste. Therefore, they are not repaired, but most often replaced. As a rule, steel and bimetallic heat exchangers are installed in the cheapest gas boilers used for heating private houses.

Cast iron heat exchangers are the most reliable and durable. They warm up quickly and cool down slowly, tolerate temperature overloads well, and are resistant to corrosion. Cast iron is perfect material for such purposes, but care must be taken when installing equipment, since the alloy is somewhat brittle.

Cast iron heat exchangers are used in floor-standing gas boilers for heating private homes. Equipment built on their basis can have very high power (up to hundreds of kilowatts).

As for double-circuit gas boilers, they come in two types:

• With dual heat exchangers;
• With separate heat exchangers.

The double design is good because it is cheap. Such boilers have one heat exchanger, it is responsible not only for heating, but also for operation DHW circuit. But this scheme has a drawback - low reliability. In addition, the double heat exchanger often becomes clogged with scale, losing its performance. Therefore, only the cheapest boilers are equipped with such exchangers.

Gas boilers with separate heat exchangers have more complex circuit– here heat generation is carried out in the main heat exchanger (steel or copper), and hot water is prepared in a separate plate exchanger. In this case, the secondary exchanger does not come into contact with the burner flame; it is generally located in a different place - heating is carried out using part of the coolant.

Design features

We have already said that gas boilers for heating private houses can be single-circuit and double-circuit, convection and condensation, wall-mounted and floor-mounted, atmospheric and turbocharged. But there are other differences represented by some design features.

Automation

Gas boilers are equipped various systems automation. Some of them are based on electronic modules, while others are tied to mechanical control. Both have their own merits and advantages, but you need to understand that non-volatile boilers can work in heating systems of private houses without electrification. And if you use bottled gas, you can do without a gas main. Electronically controlled models will require access to electrical power.

Harness

The winners here are double-circuit models, which are already equipped with all the necessary piping - these are expansion tanks, circulation pumps and security systems. If there is no harness, you will have to purchase it and install it separately, and this will take up additional space. But external piping has an advantage - it is easier to repair and maintain, since it does not require intervention in the internal structure of the boilers.

Control

Gas boilers for heating private houses are equipped with simple standard control panels. But to gain access to advanced functionality, external control modules are used - these are simple room thermostats, multifunctional control panels, as well as modules remote control with connection via GSM channel or via the Internet.

Other options

Heating equipment is constantly being improved, with more and more new functions appearing in it. Prices for gas boilers for heating a private home directly depend on the functionality specified by the developers. And the more options, the higher the price. For example, units with electronic ignition are more expensive than those with piezoelectric ignition. Approximate prices:

• Simple floor-standing single-circuit models 10 kW - 8-12 thousand rubles;
• Low-power double-circuit wall-mounted samples - from 17 thousand rubles;
• Double-circuit medium power, 20-22 kW - from 26 thousand rubles;
• Double-circuit floor-standing non-volatile, 20 kW - from 15-19 thousand rubles.

Additional options and technologies used in the equipment have a separate impact on the price.

Boiler power calculation

When choosing a gas boiler for a private home, you should pay attention to the power of the equipment. It is generally accepted that for heating 10 square meters. m of living space in the Russian climate requires 1 kW of thermal energy. In the northern and Far Eastern regions it rises to 1.2-1.5 kW, and in the southern regions it drops from 0.8 kW. But even in the south it is customary to stick to the average in case of a cold winter.

Following the formula, we find that to heat a private house with an area of ​​200 square meters. m. we will need a gas boiler with a capacity of 20 kW. But we forgot about required stock– it is needed in case of heat losses and excessively cold winters. As a rule, the reserve is 10-20%. Based on this, the recommended power of equipment for heating private houses with an area of ​​200 square meters. m. is 24 kW.

Table for calculating the power of a gas heating boiler for a private house.

Heat losses are affected by:

• Window design;
• Availability of insulation of the attic (or heated second floor);
• Availability of insulated walls;
• Ratio of window area to floor area;
• Quantity external walls in one room or another.

The average temperature during the coldest period in a given area is also taken into account.

The choice of a gas heating boiler depends on many indicators. The number of floors of the house, the heating area, and mass transfer processes in the room affect the efficiency of the equipment. The technical data of the boiler and the level of safety determine the operation of the unit. Therefore, when choosing a boiler, you need to proceed from the total indicators of both the boiler and the room.

Types of boilers

Gas boilers are divided according to several parameters:

1. By mounting method (wall, floor);
2. According to the method of operation (single-circuit, double-circuit);
3. On ventilation;
4. On the use of condensate.

Characteristics

Wall mounted units

The most modern models that are installed on the wall. Such boilers are compact, convenient for heating small rooms.

The power of the device is 12-42 kW, allowing you to heat an area in the range of 50 – 400 m². Such models provide not only heating, but also hot water heating.

Wall-mounted gas boilers have a control system for the operation of the device and a built-in burner. Burner ignition is carried out according to 2 types - piezo ignition or electric. In the first case, it is carried out manual control ignition process, in the second - automatic.

Burners in wall-mounted gas boilers are installed either conventional or modulating. Modulating ones independently regulate the gas supply for the operation of the installation.

Floor standing boilers

Traditional heating installations that have gained popularity among the population. For installation floor boiler necessary certain area. Such mini boiler houses are distinguished by their reliability and high power. They are installed for heating large rooms.

The boiler heat exchanger is made of 2 metals - cast iron or steel. Cast iron more durable, as they are not subject to corrosion, but at the same time more fragile. Gray cast iron, used for burners in new models, makes them more durable and not as fragile as their predecessors. Steel lighter than cast iron, but for successful operation it is necessary to comply with measures to prevent corrosion.

There are boilers with forced and atmospheric burner. In the first version, the burner is sold separately; such installations have high efficiency and high cost, power of the order of several thousand kW. The second option is cheaper, the burner is included in the boiler package, power is 10-80 kW.

Single-circuit installations

These are exclusively heating units. To obtain hot water intended for domestic needs, you must purchase a boiler separately. The calculation of the volume of the latter depends on the number of residents.

Dual-circuit devices

The most popular model. These boilers work not only for heating, but also for heating water. The cost of one such device is higher than the cost of a single-circuit boiler, but if you consider that in addition to a single-circuit boiler a boiler is needed, then the price of a double-circuit gas installation comes out significantly lower than the total price that you need to pay for a boiler and a single-circuit boiler.

Forced ventilation boilers

In such models built-in fans, which remove burnt gases from the boiler. To operate this type of device, it is necessary to make a special hole in the wall to which the exhaust pipe is connected. Through the pipe, with the help of a fan, exhaust gases from the boiler are discharged into the atmosphere.

Such devices are used in rooms where there is no chimney.

Units with natural air exhaust

These boilers remove gases using natural draft. The hood passes through the chimneys that are in the house. When installing the boiler, the pipe is connected to the house chimney. Additional equipment (as in the case of a boiler forced ventilation) the traction hole is not required in this case.

Boilers with condensate processing

New generation devices – boilers with condensate processing. When fuel burns, water vapor and carbon dioxide are produced. During the process of removing combustion products through the chimney, water vapor condenses in the chimney. Condensation has high temperature , therefore, it is discharged from the chimney in the receiving device and pumped out by a pump at certain intervals into the heating system circuit. The use of condensate to operate the unit allows increase the efficiency of such models by 6%. from a similar boiler, without this function. Such boilers are most in demand in Europe, and in some countries the installation of such models is encouraged at the state level. Unfortunately, such boilers are still little known in Russia. Condensing boilers economical, as due to the use of additional condensate energy they reduce gas consumption by up to 30%

Features of choosing a gas boiler

The choice of a heating gas boiler takes into account individual characteristics operating conditions. It depends on many components:

• The total area of ​​the heated room;
• The need to heat hot water (and its volume depends on the number of hot water consumers);
• Presence of a chimney;
• Pressure in the gas pipeline;
• Availability of insulation on the walls;

For heating a small room, a wall-mounted gas boiler is quite suitable. It is conveniently installed on the wall and does not take up much space. This device is quite capable of heating water for 3 people.

To calculate the required power of a heating boiler, use the formula - 10 kW of power is required to heat 10 m² of area.

When choosing between models of double-circuit boilers, you need to know that there are devices with a built-in water tank and flow-through. The first option is suitable for a small family in which water consumption does not exceed 14 liters at a time. The flow apparatus is suitable for large quantities heated water.

Consumers face a difficult choice between heating system manufacturers. Imported ones differ more beautiful design, but it should be taken into account that domestic companies producing gas boilers take into account the peculiarities of the domestic gas supply, supply interruptions electricity, which cannot be said about foreign manufacturers.

In addition, gas boilers Russian production can run on liquefied gas, which significantly expands the scope of use of such systems.

Heating system safety

In modern gas heating boilers sensors are installed that monitor work at all stages– from gas and water supply to exhaust gases.

Wall-mounted boilers are equipped with sensors that block the heating system in the event of a power outage. As the temperature rises, higher established norm, the boiler is blocked. For normal operation of such a system, a constant supply of electricity is required, since these systems are connected to the network.

Floor-standing gas installations are equipped with sensors that operate in mechanical mode, regardless of the presence of electricity. Control over the work process occurs at all levels, from gas supply to the removal of exhaust gases from the system.

IN double-circuit boilers there is a risk of scale formation. To eliminate this problem, water filters are installed, which soften the water supplied to the heater and significantly reduce the risk of scale formation.

System installation

The installation of the heating system is carried out by specially trained specialists, after approval of the project in the prescribed manner. Self-installation gas heating boiler can lead to disastrous consequences.

For normal operation of a floor-standing gas boiler, it is necessary to first prepare the room in which it is planned to be installed. The unit itself is installed on small hill (15-20 cm). The place is selected in such a way as to ensure free access to the device from 3 sides. Since all boilers operate using electricity, it is necessary to do grounding to ensure the safe operation of electrical appliances.

Advantages and disadvantages

The advantages of wall-mounted gas boilers include:

• low cost,
• ease of installation (this reduces the cost of installation work),
• small sizes,
• full control over the operating process of the unit.

On the downside:

• low power
• dependence on the availability of electricity.

Advantages of floor-standing boilers:

• autonomous,
• do not depend on power supply,
• have great power
• durable.

The disadvantages of floor installations include:

• the high cost of the boiler itself,
• high installation costs,
• the need for a special room for a heating boiler or equipment already available under heating installation. This requires additional financial and resource costs.

The optimal choice of heating device for a private home is floor-mounted. It is capable of heating a room up to 600 square meters.

The only disadvantage in comparison with the wall-mounted unit () is that the floor-standing unit requires a separate room for installation (). But in terms of price/power ratio, floor-standing models outperform wall-mounted ones.

What kind of floor gas systems exist for heating a private home, how to choose?

Based on the material of manufacture, a cast iron boiler is preferable. It has higher wear resistance and corrosion resistance than steel, and greater inertia.

A steel boiler lasts an average of 15 years, a cast iron boiler lasts half a century. Steel is preferable for wall mounting, because... its mass is less. For a floor-standing unit, weight does not matter.

Floor-standing gas heating boilers - which one is better in terms of design and technical characteristics? The main criteria are power, efficiency, reliability, ease of use, cost.

Structurally, the boilers differ:

• by the number of circuits;
• by type of burner and chimney;
• by type of heat exchanger;
• by type of automation.

Selection by power

Power depends on the area of ​​the house. Usually they start from the figure of 1 kilowatt per 10 square meters plus a correction factor for the region. For dual-circuit models add another 25% ().

The efficiency and reliability of the boiler depend on the power regulation features. The adjustment can be two- or one-stage.

There is also a third, most economical option– modulating burner. Provides smooth adjustment and minimizes fuel consumption.

Selection of burner and combustion chamber type

The burner can be atmospheric or fan (). In the first case, the firebox is open, oxygen for combustion comes from the room, and smoke escapes through the ceiling through a standard chimney.

Boilers are equipped with fan burners closed type: air is pumped by a built-in fan coaxial pipe combustion products are discharged from the street through the same pipe.

Fan burners not only work more efficiently, but are more resistant to pressure changes in the gas line.

According to the type of inclusion, burners are distinguished between piezo and electric ignition. In the first case, the pilot light is constantly on when the boiler is operating, in the second it is triggered when fuel is supplied to the burner.

Second burners are more economical, but they require electricity. This means that you will need a surge filter or stabilizer to protect against voltage surges and interference.

Automation

An automatic heating boiler control system can be volatile (powered by electricity) or mechanical ().

Advantages of the first type: ease of control, fuel efficiency, many useful functions (self-diagnosis, display of user information on the display, etc.).

Minuses– the price is higher, there is a dependence on the power grid. Those. additional electricity costs and exposure to damage due to voltage surges. It is advisable to purchase protective electrical equipment.

A non-volatile system is structurally simpler, does not depend on electricity, has good maintainability, and is cheaper.

Cons: requires user control, less economical gas consumption, less functionality.

One or two circuits

The first option is designed only for heating, the second also supplies hot water for economic and domestic needs (). A compromise option is to purchase a single-circuit boiler and connect an additional boiler to it.

The advantage of a double-circuit boiler is its compactness (). But it is much more demanding in terms of maintenance than a single-circuit one, less economical and not very convenient to use. big house, if the boiler and DHW operation points are separated by a large distance. Moreover, in this case it will not be possible to install an additional pump.

The disadvantage of a single-circuit with an additional boiler is a large loss of space. It is possible to equip the system with an additional pump, but water consumption will still be limited by the size of the boiler tank.

The boiler and boiler separately will cost more than a double-circuit unit.

The heat exchanger of a double-circuit boiler can be separate and bithermal. The first option is considered more reliable, durable and functional.

Convection or condensation

Another significant parameter for choosing a floor-standing gas boiler is the method of heat transfer. A condensing-type boiler is equipped with a complex spiral-shaped heat exchanger, through which the coolant is partially cooled.

Condensation settles on the walls. Condensation occurs with the release of heat. Those. If a conventional (convection) unit uses only fuel combustion energy, then a condensing unit additionally releases heat during condensation.

The efficiency of these boilers is the highest, 98%. But they have certain operational limitations: the coolant enters the system partially cooled. This is good for heated floors, but bad for radiators.

Manufacturers

Today, the most popular boilers on the Russian market are the following brands:

• BAXI (Italy). Series SLIM (open firebox), Galaxy (closed). One and two circuits. Power from 22 kilowatts, efficiency of at least 90%, price from 35 thousand rubles;
• Protherm (Slovakia). Bear series. One and two circuits. Power from 15 kW, efficiency from 90, cost from 25 thousand;
• Buderus (Germany), Logano series. Main and liquefied gas, one and two circuits. Power from 20 to 300 kW, efficiency from 93. Low noise level. Cost from 60 to 600 thousand;
• Vaillant (Germany). Series VK INT (open firebox), ecoVIT and ecoCOMPACT (condensing models). Power from 16 to 160 kW, efficiency no less than 94. Price from 50 thousand.

From German manufacturers good feedback Also produced by Bosch, Wolf and Viessmann, from Italian - Ferroli. All of the listed brands have a developed service network in the Russian Federation and are also characterized by high fault tolerance.

Budget brands of floor-standing boilers from Russian manufacturers:

• Rostovgazoapparat is the oldest boiler equipment plant in Russia. Boilers with one and two circuits, steel and cast iron heat exchangers, HoneyWell, EuroSit automation. Power from 11 kW, cost from 13 thousand;
• Lemax and Mimax (Taganrog). One and two circuits, it is possible to switch from main gas to liquefied gas and vice versa. The boilers are partially equipped with Sit components. Power from 12, price from 10 thousand;
• ZhMZ (Zhukovsky). Non-volatile steel boilers, one and two circuits. Comfort - 11-50 kW, 15-45 thousand. Beetle - 11-23 kW, 17-25 thousand. Station wagon - 11-29 kW, 18-28 thousand;
• Borinskoye (Lipetsk). 30 models of floor units, HoneyWell, EuroSit automation. Power from 11, price from 20 thousand.

Video about how to choose a gas boiler.

Companies producing gas boilers are gradually moving away from the production of traditional type boilers, and with them boilers classic design. Instead, new heating devices are being produced - wall-mounted gas boilers. They are represented on the market by a fairly large number of models. They may differ in their purpose. These heating devices can be used not only in the apartment, but also in the country house. Selected models are great solution For country houses. However, seeing all this variety of appliances, a person naturally has a question - which gas boiler is the best? This will be discussed in this article.

What is this device?

When the owner of an apartment or house needs a wall-mounted gas boiler, which one is better - this question interests him first of all. There are quite a few models of wall-mounted boilers on the market. Each of them has its pros and cons. But before we talk about gas installations, we should talk about what they are. When installing an autonomous heating system, it becomes necessary to install a special device through which thermal energy is obtained, which is subsequently used for a variety of purposes. It can be used to heat water or be used for other household needs. Most of these installations run on natural gas. They use either methane or propane-butane.

The best boiler these days is one that not only runs on gas, but can also be mounted on the wall. It is precisely these installations that many people choose to heat their homes. They have many advantages that make this heating equipment the most attractive to consumers. Their main advantage is their affordable price. In addition, the advantage of the installations is that they are economical during operation, and besides this, they are easy to use.

Gas installations operate according to the following principle. When fuel is supplied to the boiler, turning on electronic ignition. Note that some installations use piezo ignition. The spark obtained from the ignition causes the pilot light to ignite in the gas boiler, which ignites the main burner. It is thanks to it that the coolant is heated to the desired temperature. Next, the burner automatically turns off thanks to the presence of a thermostat. When the coolant temperature decreases, a command is sent through a special sensor and the process is repeated. IN currently There are several types of gas boilers available on the market - wall-mounted and floor-mounted. Which one is better to choose - we will talk about this later.

Types of gas boilers

If you visit a specialized gas equipment store, you can find big choice gas boilers, which can be used for heating in the house. The whole variety of gas-fired installations can be classified into different types.

Based on a parameter such as the number of circuits, they can be divided into:

• single-circuit;
• double-circuit.

By installation method Gas heating equipment is divided into:

• wall;
• floor

Another classification is based on the type of fuel used in their operation:

• solid and liquid fuels;
• electrical;
• gas.

Also boiler equipment classify according to the hot water supply principle and removal of products formed during the combustion process on:

• storage and flow;
• with natural and forced draft.

Characteristics of wall-mounted gas boilers

A wall-mounted gas boiler can be used to create a heating system in country houses and country houses. It should be noted that this equipment has inherent certain properties and characteristics, which distinguish it from others.

When choosing a wall-mounted heating boiler, pay attention to these characteristics, and you will choose without any problems suitable equipment to heat your home.

What to look for when purchasing?

Which boiler is better and what characteristics should you pay attention to when choosing this equipment? It is these two questions that primarily concern people who are thinking about purchasing heating equipment for their home. The first and most important thing is to understand how economical the installation you choose is. To do this, you need to find out its efficiency. Note that modern heating boilers have Efficiency not lower than 91%.

A good boiler for heating your home should have comfort functions. These include a thermometer and a pressure gauge. Thanks to these devices, the owner of gas equipment can regulate the heat in the apartment during its operation. They also help control the safety of the coolant heating process.

When choosing wall installation on gas, the choice should be made in favor of products from well-known manufacturers. The quality is indicated by the presence of information about the manufacturer on its body. If there is nothing like that, then it is best to refuse to purchase such a gas boiler.

When choosing a wall model, you should also pay attention to the volume expansion tank. The minimum capacity of the container must be be at the level of 7-8 liters. It’s also worth checking out the price tag for spare parts in the store. During the operation of a gas installation, at some point there will be a need to perform repair work. If you know in advance about the costs of repairs, you can avoid unnecessary worries.

The difference between wall-mounted and floor-mounted devices

Which gas boiler to choose: floor-mounted or wall-mounted - this question arises for every person who has decided to create a autonomous system heating. Which one is better and what differences do these settings have among themselves?

The main difference lies in the installation features, and besides this, in the type of their design. Floor installation acts as a heat exchanger. If the burner in the boiler breaks, the heat will leave the house. In the event of a breakdown, the wall-mounted model can be repaired without serious problems.

Another difference between these units is their service life. Floor-standing equipment has a longer operating period. If the owner of the premises chooses such a model, he can count on its service for 20 years. Equipment that is mounted on the wall lasts no more than ten years.

Between themselves, these two types of heating boilers differ in the type of automation, which is used in them. Wall-mounted appliances are equipped with a factory-installed security system. Therefore, when there is a need to replace a specific sensor, certain difficulties arise. But on wall-mounted devices you can find Various types automation.

Rules for operating gas boilers

Even good device from famous manufacturer will not last long if you do not follow a number of rules. Their implementation will allow ensure reliability and safety equipment operation.

• Each time before turning it on, you should check the equipment for traction.
• If gas equipment is faulty, then it is best to refuse to use it.
• The installation should be started only when water enters it. The pressure on the pressure gauge should be at least 1.2 Bar.
• Avoid closing hot water taps while the device is operating. If you neglect this rule, the pressure inside the heating tank will increase sharply.
• The room in which a gas-fired heating boiler is installed must be regularly ventilated.
• When servicing gas equipment or during its repair, you should only use technical documentation for this model.

When choosing gas-fired heating boilers, most owners of private households give preference to models foreign manufacturers. The most popular products are from companies from Germany and Italy. Here is a unique rating of manufacturing companies basic heating equipment.

• Among German companies, boilers from Wolf and Vaillant are the most in demand.
• Dakon products are the most popular among Czech companies.
• Among the products Italian manufacturers There is a high demand for equipment produced by Ferroli.

Wolf boilers

Wolf boilers are currently in greatest demand on the Russian market. The products of this manufacturer are different high quality manufacturing and reliability during operation. In addition, it is easy to use. Wolf boilers use natural gas as fuel, which ensures high operating efficiency. The installations of this manufacturer are equipped with control elements, which makes it possible to save fuel.

Dakon boilers

On the Russian market, the products of this company are represented by models that are equipped with elements of modern automation. The boilers of this company fully meet all requirements.

Ferroli boilers

The main advantage of gas equipment from this manufacturer is compactness of boilers, wherein Ferroli boilers meet all the requirements for this equipment. Currently, the products of this company are represented on the Russian market in eight series wall units, operating on gas. Some of the models available to consumers have an interface through which hot water and a built-in boiler can be connected to the equipment.

Domestic manufacturers

Russian companies also produce good boilers, but we note that in terms of characteristics they are somewhat inferior to products from foreign manufacturers. The following companies' products are in demand among domestic consumers:

• "Signal",
• "Rostovgazoapparat"
• "Trade house Strela-Zvezda".

Thus, in order to choose truly high-quality boiler equipment today, it is not enough to pay attention only to the price. Much more important performance characteristics the selected model.