Since gas in Russia costs an order of magnitude lower than electricity, many owners of private houses are turning to installing gas boilers. However, economic parameters are far from the only advantage of units of this type over others - they include high thermal power, optimal level Efficiency, minimum amount of harmful emissions, as well as the ability to heat large areas (on average from 150 to 300 square meters).

Of course, like any other equipment, gas boilers have disadvantages. These include strict coordination of the installation with the federal Gaztekhnadzor service, equipping the house with a chimney to remove (a small amount) of combustion products, as well as the introduction of automation to detect gas leaks.

In our rating you will find 15 of the best and highest quality gas boilers, the purchase of which will provide you with heat and hot water for many years. Before doing this, 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 you know, according to the number of circuits, gas boilers are usually divided 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 private houses.

Heating power

The more powerful the boiler, the higher its cost. In order not to overpay extra money and eliminate additional expenses 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 a country house of 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 a 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 occur very often, which will lead to accelerated wear and tear. increased costs for gas 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 locate their production in China, purchasing a gas boiler from a popular brand is better than purchasing 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 power 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 inexpensive wall-mounted gas boilers

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, in contrast to floor-standing devices.

3 Navien DELUXE 24K

Best ergonomics affordable price
Country: South Korea
Average price: 29,800 rub.
Rating (2019): 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 The material of the primary heat exchanger is 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 of the water heating installation is ensured due to the convenient display and clarity of control and measuring instruments, an adapted room regulator with remote control management. 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 quality
Country: Italy
Average price: RUB 37,820.
Rating (2019): 4.5

The Baxi MAIN 5 24 F gas boiler is an example of a double-circuit unit in the line of biothermal heating devices. An engineering solution that combined the heating circuit with the preparation of water for hot water supply in a single water supply unit 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 popular options for a gas unit are the ability to connect external controls: room regulators, weekly programmers, and the provision for pairing 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.

Boiler type	pros	Minuses
Gas convection	Affordable price Easy to install and repair Compact dimensions Attractive design (especially wall-mounted models) Economical (gas is one of the cheapest energy resources)	It is necessary to coordinate the installation with the Gaztekhnadzor service A chimney is required to remove exhaust gases When the gas pressure in the system decreases, the boiler may begin to smoke Installation of automatic gas leakage monitoring is required
Gas condensing	Increased efficiency (20% more economical than a convection boiler) High efficiency + all the advantages of a gas convection boiler (see above)	High price Complete dependence on electricity + all the disadvantages of a gas convection boiler (see above)
Solid fuel	Autonomy (can be installed where there are no utility networks) Reliability (long service life) Low boiler cost Economical (can be lower than gas costs) Variability (at the user’s discretion, coal, peat, pellets, firewood, etc. can be used)	Maintenance (cheap models can produce soot and soot). Frequent cleaning required Additional storage space required for fuel source Low efficiency Sometimes it is necessary to install forced draft to release combustion products
Electric	Easy installation Environmental Safety Silent operation No chimney installation required (no combustion products) Full autonomy High technology High efficiency (up to 98%)	The most expensive type of heating (consumes a lot of electricity) Requires quality electrical wiring(there may be problems with installation in older houses)

1 Vaillant turboTEC pro VUW 242/5-3

High efficiency with maximum reliability
Country: Germany
Average price: 53,700 rub.
Rating (2019): 4.5

The leading line in the rating is occupied by not the cheapest in the category, but the most reliable and efficient gas boiler Vaillant turboTEC pro VUW 242/5-3. The skill of German manufacturers knows no bounds: over more than ten years of production, this model has received mostly laudatory reviews regarding various aspects of its design and operation.

A double-circuit boiler can be used not only as a heater: when a source of cold water is connected to it, it copes with the functions of a boiler no less brilliantly. Maximum temperature The DHW circuit is 65 degrees Celsius - for home use this is more than optimal. 24 kW of power is enough to heat residential areas up to 240 square meters. In this mode, Vaillant turboTEC pro VUW 242/5-3 shows the highest efficiency value - about 91%. It is also worth noting that there are six levels of protection, electronic control with the ability to modulate the flame, as well as a six-liter (generally standard) expansion tank.

The main disadvantages of the model affect the purely marketing side of the manufacturing company. The cost of servicing Vaillant boilers is very high, and the owner will bear the costs both for the purchase of a branded part and for its subsequent installation (approximately 50/50). Fortunately, serious breakdowns of units occur extremely rarely.

The best gas boilers with floor installation from the budget category

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. To install floor-standing boilers, it is recommended to use a separate room (boiler room).

3 Protherm Wolf 16 KSO

The best automation. Developed service network
Country: Slovakia
Average price: 21,200 rub.
Rating (2019): 4.5

The non-volatile floor stand, presented by the Slovak company Proterm, is distinguished by its surprisingly miniature dimensions. Measuring just 39 cm wide, almost 75 cm high and 46 cm deep, it can easily be installed in any small space. The “Wolf” series includes 2 modifications, differing only in thermal power of 12.5 and 16 kW, sufficient for heating a private house with an area of ​​30 to 150 square meters. m.

The fact that the main production site of Protherm is located at the Vaillant plant, a world-famous German manufacturer of gas boilers, will say a lot about the quality of workmanship. Floor-standing units are made of 3 mm thick steel, equipped with temperature and emergency controllers, a draft stabilizer, as well as a SIT gas burner device (Italy). The design is easy to install and operate, and therefore does not cause any complaints from users. However, you need to take into account that the 2-year warranty on the unit applies subject to installation by a certified specialist.

2 ATON Atmo 30E

The most powerful gas boiler (30 kW)
Country Ukraine
Average price: 27,800 rub.
Rating (2019): 4.0

A powerful single-circuit boiler of Ukrainian origin, which has everything necessary to ensure stable heating of rooms up to 300 square meters. Actually, ATON Atmo 30E fulfills its main task beyond all praise - the absence of a second circuit for heating water allowed Ukrainian craftsmen to devote more attention and resources to improving and fine-tuning the heating function.

For normal operation, the boiler requires 3.3 cubic meters of gas per hour. This is quite a lot (especially for a budget model), but almost all the energy from the combustion of natural fuel (the efficiency of the unit is 90%) is converted into thermal energy, which, in combination with 30 kW of power, results in such a vast heated area.

In general, the presence of the principle of economy is felt in the model: the designer cut off almost all “civilized” functions, leaving the boiler with only the most necessary things - a thermometer, gas control and an overheating protection thermostat. This step led to a noticeable increase in the level of reliability, since a smaller number of components leads to a smaller number of possible (elementary) failures. In general, ATON Atmo 30E is an ideal boiler for a large country house, not burdened with additional functions and the need to work as a boiler.

1 Lemax Premium-25B

Largest heating area at an affordable price
Country Russia
Average price: RUB 27,360.
Rating (2019): 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 the steel structure of the heat exchanger. This material is more susceptible to corrosion than copper and cast iron heat exchangers. However, the developer has provided a special thermal insulation coating with inhibitors, which should significantly reduce corrosion of the heat exchanger.

The boiler is equipped with everything necessary for safe work systems: heat exchanger overheat 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 floor-standing gas boilers: price - quality

Here we present the most optimal price-quality ratio of floor-standing gas boilers. The most popular units among buyers.

3 Buderus Logano G124 WS-32

Increased efficiency. Large range of additional equipment
Country: Germany
Average price: 102,000 rub.
Rating (2019): 4.5

The Logano line includes 4 standard sizes (from 20 to 32 kW) of low-temperature boilers, which are considered more profitable and safer than high-temperature ones. In addition, low temperatures in the heating system create maximum comfortable conditions for a person, while strong temperature changes in an apartment or private cottage are excluded. The unit can be integrated into a heating system using heated floors, and if the heat loss at home is too great, it is possible to supplement it with radiators.

Additional heat savings are facilitated by the special design of the cast iron heat exchanger and 80 mm thick thermal insulation. So that buyers can individually configure a heating device, the company offers a wide selection of additional parts and assemblies, which, it must be said, are very expensive. For example, a control system flue gases They offer to buy AW 50.2-Kombi for almost 9.5 thousand rubles, and for the Logalux SU floor-standing water heater tank you will have to pay at least 50 thousand rubles. Nevertheless, consumers are satisfied with the efficiency, ease of operation and durability of the model and recommend it for purchase.

2 Navien GA 23KN

Stability and safety of operation. 3 year warranty
Country: South Korea
Average price: 34,000 rub.
Rating (2019): 5.0

In June last year, Navien Rus LLC was awarded the “Company of the Year” award in the “Best Supplier of Engineering Equipment” category. A month later, the company celebrated the sale of its millionth mounted boiler in Russia with a 3-day conference. In addition, the brand has been for 4 recent years received 46.6% of the votes and repeatedly confirmed the title of “Brand No. 1” in the “Heating Boilers” category. What is remarkable about his products that people vote for them not only with their words, but also with their wallets?

First of all, buyers are attracted by the quite reasonable price for the unit, the appearance of which alone speaks of unsurpassed quality, characteristic of South Korean technology. They are not disappointed even after getting acquainted with the technical characteristics, in particular, the presence of a 2nd circuit, a closed combustion chamber and an electronic control system with a remote control included. Despite its “overseas” origin, the model is fully adapted to Russian operating conditions and is designed to operate at a minimum gas and water supply pressure of 4 mbar and 0.1 bar, respectively.

1 Baxi SLIM 2.300 Fi

Best functionality and quality
Country: Italy
Average price: RUB 131,838
Rating (2019): 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. Exactly this expensive device in our review, with a price tag of about $2,000, which is quite acceptable for those who do not like to skimp on quality.

The double-circuit “Baxi” is capable of heating a cottage with an area of ​​up to 300 square meters. m. with an efficiency rate of 90%. Can operate in a closed heating system due to the built-in circulation pump. Built-in expansion tank will maintain optimal pressure in the heating system, accepting excess during 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 condensate is generated using 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 with an efficiency of 109%. True, purchasing a condensing model will be much more expensive than a convection model and, perhaps, such a decision will be justified when heating sufficient areas.

3 Baxi POWER HT 1.450

Optimal performance and safety
Country: Italy
Average price: 147,000 rub.
Rating (2019): 4.7

Distinctive characteristics of the model are high power levels of 45 kW, efficiency of 107.5% and the ability to maintain 100% power when the input pressure is reduced to 5 mbar. The device implements all modern protection methods, including protection against freezing, overheating, as well as gas control and a self-diagnosis system. The built-in microprocessor constantly monitors the status of the sensors and in the event of emergency situations (for example, a drop in water pressure, overheating or gas supply shutdown) automatically turns off the boiler. It is also worth noting the presence of automatic ignition, an air vent and the ability to connect a heated floor.

Baxi POWER HT 1.450 is one of the most reliable premium floor-standing boilers. The only obvious disadvantage of the device is its high price.

2 Baxi Duo-tec Compact 1.24

Profitable price. Minimum consumption liquefied gas
Country: Italy
Average price: 52,500 rub.
Rating (2019): 4.7

Baxi Duo-tec Compact 1.24 is 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 for installation in a country cottage or country 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 Protherm Lynx condensation

Combination of high power and compactness. Auto control
Country: Slovakia
Average price: 57,000 rub.
Rating (2019): 4.8

In Europe, traditional boilers are practically not used - they have been replaced by condensing units like the Protherm “Lynx”. Models of this line have been produced since 2002 and still remain in demand on the market. There are quite a lot of reasons for its popularity: here and affordability - mounted condensing boilers with similar characteristics from competitors are 1.5 times more expensive, and have rich equipment, and a design that is still relevant today.

The forced exhaust system of combustion products allows the device to be installed in rooms without a chimney. Fuel consumption is 3.2 cubic meters. m./hour and provides savings of about 20–30% compared to convection devices. Thanks to two preset modes and an automatic control system with an electronic display, setting the desired temperature in a private home is not difficult. Additionally, the developers have provided the ability to connect an external controller. Users do not complain about any breakdowns, which allows us to judge the high reliability of the Lynx.

The best double-circuit boilers

When choosing a double-circuit boiler, as well as a single-circuit boiler, you need to pay attention Special attention power. If the residents of the house plan to take a bath frequently, the minimum power of the equipment should be at least 18 kW; if a shower is a priority, then it is permissible to install a less powerful unit - from 10 kW. Even before purchasing, it is advisable to check whether the manufacturer has not skimped on the circulation pump, safety valve, membrane expansion tank and fittings included.

3 Bosch Gaz 6000 W WBN 6000-18 C

Patented heat exchanger design. Low noise level
A country: Germany (produced in Russia)
Average price: RUB 29,100.
Rating (2019): 4.5

Preparing hot water usually takes a long time. If you do not want to put up with such an inconvenience, take a closer look at the Bosch Gaz 6000 W WBN 6000-18 C boiler. Its plate heat exchanger is designed in such a way that water is heated in a matter of seconds. The presence of two separate heat exchangers makes the boiler more productive (30° - 8.6 l/min, 50° - 5.1 l/min) and not demanding on water quality.

Among other advantages of heating equipment, it should be noted that there is minimal noise - many users compare the sound of a working boiler to the noise of a computer or refrigerator. Economy is another Bosch feature. It is proposed to ensure this by turning on the “Eco” mode, which provides for heating water only when it is withdrawn. If the most flexible automatic adjustment is required, it is possible to connect external regulators to the built-in automation, allowing you to control the system remotely.

2 Ariston CARES X 15 FF NG

Fine temperature adjustment. Sophisticated security system
Country: Italy
Average price: 35,500 rub.
Rating (2019): 4.7

The Ariston CARES series is the most compact gas boilers in a traditional design and with a wall mounting method. The 15-kilowatt unit is designed for installation in heating systems of small private houses, cottages and apartments, in limited space whose dimensions – 400x700x319 mm – fit in quite well. And it’s very helpful that the unit’s settings allow you to set the temperature of the heating circuit with an accuracy of 1°, thereby ensuring an ideal microclimate in a small room.

The design is assembled according to a modular principle, due to which the number of threaded connections - points of potential leaks - has become minimal. Built-in protective systems such as gas control, anti-freeze mode, and safety valve are responsible for uninterrupted operation and increased device safety. And at the same time, the manufacturer provides all the necessary options for comfortable operation - a large electronic display, auto-ignition, status indication and the ability to connect external control. Of course, this unit deserves a place in our rating!

1 Rinnai RB-207RMF

The best digital technologies. 18 Japanese patents
Country: Japan
Average price: 52,800 rub.
Rating (2019): 4.9

It’s not for nothing that the Japanese are known as techno-freaks – they even managed to stuff the Rinnai RB-207RMF gas boiler with the most modern electronics. What makes it unique, first of all, is the algorithm for automatically maintaining the optimal ratio of the gas-air mixture in the working chamber. The process is controlled by a “brain” with touch sensors. This achieves an unprecedentedly wide range of output power - from 17 to 100% and, as a result, a reduction in gas consumption and an increase in the service life of the primary heat exchanger.

You can control the model using the “Standard” (supplied in the basic kit), “Deluxe” or Wi-Fi remote control. With its help, you can program an individual heating and hot water supply mode, which will be maintained automatically depending on the indicators of sensors outside and inside the building. Changes in settings are duplicated by the voice navigator. Two microprocessors are responsible for safety, monitoring and correcting each other’s work. This is not a boiler, but space rocket, not otherwise!

Let's look at the variety of gas boilers. What should you ask the seller first? And what will he try to “smuggle in”? What is it better for private home owners to give up, and what should they strive for?

Let's start choosing a boiler for a home by considering the insulation of the building. What is available already significantly influences the choice or must be changed.

What sellers sell and buyers shouldn't take

Having bought a “slightly different” gas boiler, home owners then speak out as follows.

• The biggest criticism subsequently comes from savings on brand reliability. Although breakdowns of gas boilers do not occur often, nevertheless, before purchasing, it is worth understanding which manufacturers have been on the market for a long time, and what they are. What can you buy in a particular store? In terms of reliability, products from concerns from Germany, Italy, Slovenia, Japan and Korea are the leaders.
• Significant criticism is caused by savings when creating a hot water supply based on a gas boiler. After all, you will have to use hot water all the time. “I should have paid a little extra and got this one... with this…." It turned out not as convenient as we would like, and it cannot be changed.

• There are misunderstandings about saving on power when purchasing. It doesn’t happen often, but the most important complaints are...
• IN Lately owners of gas boilers complain about overpayments for “super-new” technologies that turned out to be unprofitable. Although this is not very important...
• Errors also occur in the fundamental choice - the best would not be a gas boiler at all, nevertheless, for some reason...

When a gas boiler is not the best

Does the house have the basis for economical heating?

Gas is becoming more expensive and will continue to become more expensive, like all other energy sources. Its waste will directly depend on the insulation of the house, which is also not cheap.

The better the insulation, the more expensive it is. The worse the insulation, the more expensive heating will cost. Where is the “golden mean”? - what degree of insulation is required, and what heating power should be in order to keep the house warm?
The balance of this is determined by the building design, which specifies insulation measures, and hence the power of the gas boiler.

How to conduct your own capacity calculations

As a rough approximation, it is believed that the energy loss of a residential private house should not be more than 100 watts per square meter of heated area in the coldest month. This means that the building must be “well” insulated, and there are no obvious drafts in it, i.e. ventilation under control.

This also means that a gas boiler with a power of 1 kW/10 sq. m. must heat the house so that it is warm, and if this does not happen, then you need to look for and eliminate heat leaks, which in the end will turn out to be cheaper than buying additional boilers and radiators, and then burning a lot of gas.

Before going to the store to buy a gas boiler, it is advisable to put the building in proper shape.

What power to choose

Gas boilers should not significantly exceed heat loss. Otherwise, the powerful burner will overheat the coolant too quickly and the boiler will constantly turn off and operate in frequent ignition mode. And there is no need to overpay for powerful equipment. It is accepted that equipment power should be reserved at 15% of heat loss. But as a rule, hot water is also prepared from a gas boiler. Then the power reserve needs to be increased to 25%. Then, with a house area of ​​250 sq. m. and possible heat losses of 25 kW, the house must be heated by a 32 kW boiler, which should be used.

By the way, independently calculating heat loss is a waste of time. It is unlikely that the real moisture content of the plaster, the real damage to the insulation in the attic by rodents (for example) and the actual area of ​​shading of the front window by wood will be taken into account, given the usual wind rose... so it is not recommended to engage in invention in this regard.

What do you pay attention to when choosing a boiler?

In addition to brand and power, there are a couple more important nuances when choosing a gas boiler for your home. Firstly, already at the design stage, it is decided whether the boiler will have an open or closed burner. This is fundamentally important, since units with different burners have completely different requirements for installation and operation locations.

Secondly, it is decided how many heating circuits should be in the boiler. The second circuit heats water for domestic needs. And you need to decide exactly how it will be prepared, how much it will be needed, and where the equipment will be located. Further details...

Is an open burner useful?

Burner closed type(forced ventilation) operates under the influence of a fan. Air is sucked in from outside the room through the same pipe through which gases are discharged. At the same time it is heated. Wall-mounted compact units are equipped with such a system, which can be installed in any utility room that is not damp, and the pipe can be routed outside through the wall. This is a universal, cheap and most common option. But floor-standing boilers with more advanced functionality are also equipped with such a burner...

More powerful ones are equipped with an open type (atmospheric) burner. floor standing boilers. They should be installed only in a separate combustion chamber, made according to the rules, equipped with an air supply to supply air to the boiler. The smoke is discharged through a high atmospheric chimney. Such boilers have no power restrictions and are recommended for big houses. Extremely reliable, equipped with a cast iron heat exchanger, etc...

Is a second heating circuit necessary?

There is always one circuit for the movement of liquid through the heat exchanger in a gas boiler - the coolant for heating is heated in it.
But there may also be a second circuit - it will heat water for hot water supply to the house (DHW). In practice, it turns out that the second circuit reduces the final price of equipment for hot water supply. But it also reduces comfort.

From the second circuit, water can flow directly into the tap. This is inconvenient, since the boiler will turn on every time you open it, you need to wait until it heats up and hot water arrives... Also, water can flow into an intermediate electric boiler, where it gradually cools down, and be heated with electricity - the result is a little more expensive water...

Features of single-circuit

A single-circuit boiler is designed to work with an indirect heating boiler, in which for constant heating domestic water energy from the heating fluid is used. With this option, there is always a lot of cheap water, since it can be heated by the boiler constantly, and the boiler’s capacity is not small. The recirculation system makes it possible to get hot water from the tap immediately when it is opened. It is possible to fill the bath very quickly (draining the boiler), even with a low power of the boiler itself. It is possible to get hotter water...
But the price for the equipment is higher.

Select with one or two circuits

A practical recommendation comes down to a single-circuit boiler.
The price of an indirect heating boiler with a capacity of 150 - 200 liters is not small. It contains a spiral pipeline for heating from heating and this tank has a special coating. An additional pump and an expansion tank for the recirculation pipe are also installed…. But subsequent comfort is more important.

WITH double-circuit boiler You can immediately get hot water from the tap without any equipment; just connect the pipe from the tap to the output of the second circuit. It will be possible to take a more or less comfortable bath even if the boiler power is 20 kW or more. By paying a little extra for an electric boiler of up to 50 liters, you can already get an order of magnitude greater comfort. And yet, is it worth saving so much and always giving up an avalanche of hot water?

As a rule, a double-circuit boiler is an economical option, which entails certain inconveniences in the future.

How does a condensing gas boiler work?

There is a lot of water vapor in the hot gases that are formed during fuel combustion. This water can be seen dripping from the chimney. IN condensing boilers The steam turns into water on a secondary cold heat exchanger, which is then discharged into the sewer. For the system to work, it is necessary that the heating return be as cold as possible, literally 30 degrees.

Condensing boilers are designed primarily for low-temperature heating, to work with warm floors and with radiators (in-floor convectors) up to 55 degrees. Then they develop their “monstrous” efficiency of 110 (!) percent.
But they can also operate in normal high-temperature mode, when the coolant heats up to 70 - 80 degrees.

Is a condensing boiler useful?

In Europe, laws have been passed obliging the installation of condensing boilers - heat generators that use the energy of the phase transition of water. This increases energy savings by up to 15% and significantly improves the environment.

But our ordinary homes, in most cases, are not ready for such a turn of events. Firstly, the house must be heat-saving - not only insulated, but also equipped modern ventilation, heat recuperators for wastewater and ventilation streams. Then low-temperature heating will cope well with our cold weather.

Also, the heating system itself should consist of a heated floor (preferably), and the area of ​​​​the radiators should be 20 - 30 percent larger.

It turns out that all this together, at current gas prices, is not economically profitable. An expensive condensing boiler, together with its heating system, will not pay for itself. In Europe, where the climate is much milder and the price of gas is higher, this is extremely profitable.
Therefore, such boilers are not very popular among us.

What to choose for your home

In terms of the degree of automation and the presence of protection, the range of boilers for a private home of the same power from different leading manufacturers are similar in price. Therefore, “picking through the bells and whistles” comes down rather to choosing in favor of one brand or design or another.

Every time, when choosing heating equipment, the question arises not only about choosing the characteristics of the model, but also the manufacturer, on which the quality sometimes directly depends. This also applies to gas heat generators. The market offers many models of different price categories, from which it is not always easy to choose a gas boiler that meets all your expectations. To simplify the choice and also save time on searching quality product, there is a reliability rating for gas boilers.

Gas boilers

For a general idea, you need to consider the classification of gas heating equipment existing on the market:

1. Depending on the method of natural gas combustion and removal, there are units with an open combustion chamber and a closed one.
2. According to the efficiency of using the heat of combusted natural gas, there are convection boilers and condensing boilers. The second type saves fuel consumption by about 15-20%, and also has a higher efficiency compared to a traditional boiler.
3. According to the ability to heat water for hot water supply needs: single-circuit and double-circuit.

The first type is designed for space heating, often installed in rooms without water supply, while the second type is designed for heating and supplying hot water. A double-circuit boiler saves space, but not the amount of water. In addition, it is demanding in terms of operating conditions and equipment. You can turn a single-circuit gas boiler into a double-circuit one by connecting a boiler to it. However, in this case, the volume of water supply will be limited by the capacity of the boiler, moreover, such a system will cost more than a compact double-circuit.

When installing, boilers can be wall-mounted, hanging, or floor-standing.

The first type is used for installation in limited areas. The floor-standing boiler is larger, but also more powerful, designed to heat a large area up to 600 sq.m. The wall-mounted analogue has a power of 35 kW and is intended for heating buildings up to 100 sq. m. m, since the higher temperature copper heat exchanger won't stand it.

1. Classification of models by power.

After the choice regarding the characteristics has been made, you can begin to select a manufacturer that offers quality equipment.

Rating of gas boilers for reliability and quality

Floor boiler

Rating of single-circuit and double-circuit

Among single-circuit and double-circuit gas boilers, there are none that do not meet modern requirements for operational efficiency and safety. All models with a reliability rating have electronic control, a power indicator, temperature controllers, a protection system - gas control, as well as an auto-ignition system. Among the manufacturers of single-circuit gas boilers are the following:

• MORA-TOP (Czech Republic)
• Buderus (Germany)
• Protherm (Slovakia)
• Baxi (Italy)
• Bosch (Germany)
• Viessmann Vitopend (Germany)

• High fuel efficiency - 92%
• Cast iron heat exchanger that can withstand high temperatures and has a long service life.
• Electronic control function.
• Gas control safety system.
• Compact sizes.
• Affordable price category.

There are also disadvantages: low power for a floor-standing model, as well as modest security system functionality, which, however, is enough for the cost of this model.

The rating of boiler manufacturers, in addition to those mentioned above, can be supplemented by a Norwegian companyLeberg, which is a leader in the rating of double-circuit gas boilers. ModelLeberg Flamme 24 ASD has a high efficiency of 96%, maximum thermal power 20 kW will allow you to heat a house with an area of ​​200 sq.m. The built-in circulation pump provides forced circulation coolant, and the expansion tank compensates for its thermal expansion. The nominal gas pressure in the boiler corresponds to its declared power. The model has a wide range of comfort and safety features. Among the disadvantages, one can note the single-phase network voltage, which is unreliable during possible power surges.

Boiler, floor

Rating of wall-mounted gas boilers

The reliability rating of wall-mounted boilers includes such companies asBaxi (Italy), Ariston and South Korean Navien.When comparing the three most popular models from these manufacturers, you need to consider their cost, functionality, boiler design and technical characteristics.

Baxi has long gained popularity on Russian market, where models with power up to 24 kW are presented. Bithermic heat exchanger of one of the popular wall-mounted gas boilers, Baxi Main Four 24F is made of copper, the model includes an automatic bypass that switches the hot water supply mode. The protection function consists of an emergency release of excess pressure, a flame and draft control sensor. The boiler has a 6-liter expansion tank to expand the heat exchanger.

The Navien Deluxe 24K gas boiler provides the maximum level of comfort and operational safety at an affordable price. The double-circuit type consistently heats a living area of ​​up to 200 sq.m., and the hot water system provides water up to 13.8 l/min. Long service life is ensured by the use of high-alloy steel in the heat exchanger. A convenient control system makes it easy to change the desired modes, and the function uninterruptible power supply eliminates breakdowns and extends service life.

The Ariston ALTEAS X 24 FF NG wall-mounted boiler with a closed combustion chamber does not require additional ventilation. The dual-circuit heating system heats the coolant to 82 degrees, and hot water for household needs to 60. The model has a larger expansion tank compared to previous models. An extensive safety system includes automatic diagnostics, an overpressure valve, a mode to prevent the boiler from freezing and much more, along with a high level of comfort.

Rating of gas floor boilers

The reliability of floor-standing and wall-mounted gas boilers is determined by uninterrupted operation for as long as possible, ease of maintenance and ease of control, as well as being equipped with a good protection system against overheating and soot formation.

In the category of floor-standing gas boilers there are German ones. French, Italian and also Russian manufacturers. Domestic manufacturer represented by boiler models AKGV and AOGV. They are characterized by being equipped with a comfortable electronic control unit, or a domestic unit, depending on the model range. Well suited for heating a private home.

Italian manufacturersBeretta, Alphatherm, Sime, the already familiar Baxi and Ariston produce models for heating low-rise buildings. Models are produced with a power of both 15 kW and 60 kW. They are equipped with an electronic control system, circulation pump for coolant ensuring stable operation of boilers.

The French model De Dietrich has earned a place in the reliability rating thanks to its high efficiency (95%), electronic equipment that regulates the operation of equipment that is environmentally friendly and quiet. Distinctive feature boilers of this model is a heat exchanger made of eutectic cast iron, capable of providing high level work at low temperatures.

German quality guarantees are represented by brands Buderus, Vaillant, Viessmann, Wolf.

Buderus stands out for its production of cast iron floor-mounted gas boilers with a cast iron heat exchanger, which is a sign long-term operation. Models come in both open and closed types, with different capacities.

Vaillant is a symbol of modern technological equipment, equipped various devices for comfortable, safe use of the heating device. Each model is equipped with an LCD display, is multifunctional, and has a high level of environmental friendliness.

Viessmann are characterized by a long service life thanks to a heat exchanger made of cast gray cast iron with graphite. The equipment is not subject to power surges, pressure and voltage changes. Electronic system control provides a high level of comfort.

Wolf produces boilers made of cast iron and steel with a power of up to 220 kW. In addition to high power, the models have the ability to operate in automatic mode, as well as the presence of a control system, high efficiency, reaching 95%.

A gas boiler - the main device in a central heating system.

It is used to burn natural gas and transfer its energy through a coolant to the premises to maintain the desired temperature.

Study carefully device characteristics before the purchase. It is important to understand how it works because it main element heating systems: comfort in the house depends on its quality and operational parameters.

Main technical characteristics of wall-mounted gas heating boilers

The main characteristics include power, number of circuits, performance and other important criteria.

Execution

However, such a boiler cannot always be placed in the house - You need a separate boiler room.

• Wall mounted, considered in the review. Compact models that do not require a separate room, thermal power is limited 30 kW. They are released relatively recently, so they have the most modern technology, which makes them effective and easy to use.

Peculiarities! Due to their compactness, heat exchangers in wall units have smaller wall thickness ( This is especially true for double-circuit boilers), therefore these devices are more sensitive to the quality of the coolant and water in the heating and water supply system.

If there are a lot of impurities, due to high temperatures they can quickly destroy the heat exchanger and lead to boiler failure.

Number of circuits

Some gas mounted units provide not only heating of the building, but also hot water supply (DHW), combining these functions in one device.

Such devices called double-circuit because they have a circuit in which the coolant circulates for the central heating system and a second circuit in which water flows for hot water supply.

When a hot water tap opens at a water tap (for example, in a bathroom), an electronic sensor detects this and, using a three-way valve, transfers all the thermal energy of the gas to instantaneous heating of water for domestic hot water. When the tap closes, the boiler starts heating again.

Gas boilers that are designed only for heating a house are called single-circuit.

Power

Main parameter, which is paid attention to. Required power depends on the area and insulation heated rooms, climate.

Reference! For middle zone and a typical country house use the calculation 1 kW per 10 m 2 area.

For dual-circuit systems, the required power is estimated 30% more necessary for heating.

In any case, the device is chosen with a small margin.

However, buying a boiler that is too powerful for a small building is also unwise: when operating at low powers, gas boilers show low efficiency, which leads to additional costs.

Combustion chamber type

• Open. Boilers with an open combustion chamber operate due to the natural draft of oxygen coming from the gas combustion room.

Important! Combustion products also partially enter the room, so take care about quality ventilation, for reliable operation gas burner and to avoid carbon monoxide poisoning.

The open chamber also imposes restrictions on the chimney: it must be strictly vertical. Floor-standing models are most often equipped with such a camera, but there are also wall-mounted versions.

This is ensured with the help of forced-air fans, which is why such boilers are also called turbocharged.

The chimney can be made both in the form of separate pipes and coaxial - a “pipe-in-pipe” design, when inner tube combustion products are removed, and air enters the boiler through the outside. Thanks to the heating of cold air from the street by combustion products, efficiency increases, and fans allow you to build chimney of any configuration, even with horizontal sections.

Despite the obvious advantages of a closed camera, it has a disadvantage: energy dependence, because turbocharger fans require electrical power.

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Coolant and hot water temperatures

Maximum temperature at the outlet of a gas boiler (in a heating or hot water supply system) depends on the design of the gas burner and electronics boiler If the coolant temperature is usually sufficient in excess, then some low-power boilers unable to heat water for domestic needs acceptable values. Pay attention to this.

DHW capacity and temperature difference Δt

Standard household tap with ½” inlet has performance of the order 400 l per hour or about 6.6 l/min, and if there is more than one water collection point in the house, it is necessary to take them all into account.

The characteristics indicate what maximum performance a double-circuit boiler can provide at a given Δt, where Δt- the difference between the temperatures of cold water entering the boiler and hot water leaving the boiler.

Efficiency

It is defined as the ratio of the useful power transmitted for heating and water heating to the power released during gas combustion. Indirectly affects gas consumption: The higher the efficiency, the more efficiently the boiler operates. Almost all modern models have Efficiency > 93%, the difference here is insignificant, so this is one of the last parameters that you need to pay attention to.

TOP 10: rating of the best and most popular attachments

Buderus Logamax plus GB162-65

Despite the very high power and efficiency, its price is excessively high. Besides, heavy weight leads to installation problems.

• Power: 14.6-60 kW.
• Number of circuits: 1.
• The combustion chamber: closed.
• Efficiency: 97,8%.
• Coolant temperature: 30-90°C.
• Weight: 70 kg.
• Price: 220 thousand rubles

Protherm Cheetah 23 MOV

The only representative of the review with an open combustion chamber, therefore requiring a ventilation device in the room - definitely can't be counted as a plus this model.

• Power: 9-23 kW.
• Number of circuits: 2.
• The combustion chamber: open.
• Efficiency: 90,3%.
• Coolant temperature: 38-85°C.
• DHW temperature: 38-60 °C.
• DHW performance: 11.1 l/min @ Δt=30°C.
• Weight: 31 kg.
• Price: 32 thousand rubles

Photo 1. Gas boiler model Protherm Cheetah 23 MOV, equipped with an open combustion chamber.

Baxi LUNA-3 COMFORT 240 Fi

Many people have a boiler Poorly maintains hot water temperature, does not reach the desired level or jumps, everything is in order with the heating. If hot water supply is not the most important thing for you, this is a good option.

• Power: 9.3-25 kW.
• Number of circuits: 2.
• The combustion chamber: closed.
• Efficiency: 92,9%.
• Coolant temperature: 30-85°C.
• DHW temperature: 35-65°C.
• DHW performance: 10.2 l/min @ Δt=35°C.
• Weight: 38 kg.
• Price: 47 thousand rubles

Photo 2. Gas boiler Baxi LUNA-3 COMFORT 240 Fi, with high power and a closed combustion chamber.

Vaillant ecoTEC plus VUW INT IV 246/5-5

Well equipped, reliable, power adjustable over a very wide range. Made in Germany. Due to condensation of gas vapors, Efficiency can reach 104.5%. However, the unreasonably high price does not allow it to take high positions in the review.

• Power: 3.8-20 kW.
• Number of circuits: 2.
• The combustion chamber: closed.
• Efficiency: 98,1%.
• Coolant temperature: 30-85°C.
• DHW temperature: 35-65°C.
• DHW performance: 11.5 l/min @ Δt=30°C.
• Weight: 35 kg.
• Price: 81 thousand rubles

Photo 3. Vaillant ecoTEC plus VUW INT IV 246/5-5 gas boiler is powerful and reliable.

Beretta City 24 RSI

High power, adjustable over a wide range. Users note good warranty service in Russia. Boiler single-circuit, but at such a cost it can be the best option.

• Power: 7.6-25 kW.
• Number of circuits: 1.
• The combustion chamber: closed.
• Efficiency: 92,8%.
• Coolant temperature: 40-80°C.
• Weight: 31 kg.
• Price: 37 thousand rubles

Boiler German quality, with the most high temperature coolant in the rating ( 90°C). And also excellent DHW performance, ratio price/functionality.

• Power: 9.4-24 kW.
• Number of circuits: 2.
• The combustion chamber: closed.
• Efficiency: 90%.
• Coolant temperature: 40-90°C.
• DHW temperature: 40-60°C.
• DHW performance: 11.5 l/min @ Δt=30°C.
• Weight: 40 kg.
• Price: 49 thousand rubles

Ariston BS II 24 FF

Users note that the boiler of the Italian manufacturer is economical and reliable. Besides has a low price, therefore it may become great solution entry level for heating and water supply.

• Power: 10-24 kW.
• Number of circuits: 2.
• The combustion chamber: closed.
• Efficiency: 93,8%.
• Coolant temperature: 35-85°C.
• DHW temperature: 36-65°C.
• DHW performance: 9.7 l/min @ Δt=35°C.
• Weight: 30 kg.
• Price: 23 thousand rubles

Photo 4. Gas boiler Ariston BS II 24 FF with two circuits, equipped with a closed combustion chamber.

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Bosch Gaz 6000 W WBN 6000-24 C

A Russian-made boiler, specially adapted by Bosch for our conditions: it works at any voltage ( 165-230 V) and gas pressure differences ( 10.5-16 bar). Works on both liquefied and natural gas.

• The combustion chamber: closed.
• Power: 7.2-24 kW.
• Efficiency: 90%.
• DHW temperature: 35-60°C.
• Heating temperature: 40-82°C.
• DHW performance: 6.8 l/min @ Δt=50°C.
• Weight: 32 kg.
• Price: 29 thousand rubles

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

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

Appearance of modern gas heating boilers various designs

Why should you choose a gas boiler?

Installing heating equipment that consumes gas as fuel has a number of advantages and even advantages over the use of units using other types of fuel:

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

When purchasing such an installation, the buyer naturally expects warmth in the house, safety during operation of the boiler and the durability of this equipment.

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

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

Rating of wall-mounted gas boilers

Wolf CGG-1K-24

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

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

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

Advantages:

• high quality and efficiency;
• rational placement - possibility of installation close to the wall;
• the ability to use mains or liquefied gas (after replacing the nozzles and making changes to the settings);
• fast water heating;
• smooth start;
• compact dimensions;
• light weight (weight up to 45 kg);
• reliability;
• long warranty (24 months).

Flaws:

• high cost (52-55 thousand rubles).

Baxi Luna-3 Comfort 240 Fi

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

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

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

Flaws:

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

Bosch Gaz 6000 W WBH 6000-24C

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

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

Advantages:

• compactness;
• modern design;
• high efficiency;
• stability of operation at constantly changing gas pressure;
• the ability to connect to a cylinder or line (after changing burner nozzles and adjustments);
• modern smoke exhaust system;
• high security;
• ideal price/quality ratio;
• high quality assembly.

Flaws:

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

Navien Deluxe 24K

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

Double-circuit gas boiler with increased functionality Navien Deluxe 24K

Peculiarities:

1. Built-in frost protection - if the temperature of the liquid in the heating system drops to 10 degrees, the pump automatically turns on; upon further cooling to 6, the burner starts until the water reaches 21ºС.
2. Stable operation at low pressure in the gas and water pipes - the system operates at the corresponding indicators of 4 bar and 0.3 bar.
3. A control panel is provided.

Advantages:

• separate stainless heat exchangers;
• modulated boost, increasing efficiency;
• internal components made of high quality copper;
• affordable price;
• high quality assembly;
• wide functionality.

Flaws:

• instability of outlet water temperature.

Protherm Cheetah 23 MOV

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

• ease of operation;
• a monitor showing all the necessary information about the operation of the device;
• automatic diagnostics;
• several modes - warm floor, comfort and winter/summer;
• there is an option for connecting automatic weather monitoring systems;
• built-in pump;
• protection against freezing and overheating;
• operates from a gas line or cylinder.

Wall-mounted gas heating boiler Protherm Gepard 23 MOV

Flaws:

• It is imperative to install a separate filter on the incoming water to protect the boiler system from salts;
• Possibility of installation only if there is a chimney in the home.

Rating of wall-mounted condensing gas boilers

Vaillant ecoTec plus VUW INT IV 246

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

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

Peculiarities:

1. Built-in function for increasing power in DHW mode.
2. Also suitable for low temperature heating systems.
3. External and internal oxygen supply to support combustion.
4. Backlit display.
5. Electronic ignition.
6. Heat exchanger made of stainless alloy.
7. Built-in pump.
8. Expansion tank 10 l.

Advantages:

• modern design;
• high quality;
• efficiency.

Flaws:

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

Baxi Duo-tec Compact 24

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

Important! The device has an adaptation system to different operating conditions. Even if the gas pressure drops, the rated power is maintained.

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

Advantages:

• light weight;
• compactness;
• high efficiency;
• low noise and vibration levels;
• efficiency;
• quality components and reliable assembly.

Flaws:

• dependence on power parameters in the network;
• quite high cost (45-53 thousand rubles).

Rating of floor-standing single-circuit gas boilers

Viessmann Vitogas 100-F GS1D870

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

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

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

Flaws;

• high cost (141-143 thousand rubles).

Prothrem Bear 30 KLOM

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

Single-circuit floor-mounted gas boiler Protherm Medved 30 KLOM

Advantages:

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

Flaws:

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

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