Wall-mounted boilers with two circuits operating on gas fuel make it possible to provide supply of hot water to radiators (one circuit) And taps (second circuit) Houses.

Gas boilers are most often used to heat private houses.

Features of wall-mounted gas boilers for heating a private house

The wall mounting method places special demands on the devices:

• compact dimensions;
• light weight;
• simple controls;
• modern design.

Often boilers are mounted on the walls not in separate buildings, like floor-mounted ones, but directly in the utility rooms of houses - for example, in the kitchen.

This is why boilers are made relatively small in size with a control panel on the front part. The body has a rectangular shape, which makes it easier to fit the device into the interior of the room.

The meaning of the parameters, which options are reliable

Power- a key parameter that allows the boiler to generate the required amount of heat for heating and hot water supply (DHW).

It is of great importance when choosing a suitable model and is calculated according to the principle 1 kW per 10 sq. m.

But no boiler should operate at maximum power, otherwise it will quickly fail. Therefore, when calculating the boiler power parameter, add 20% stock.

That is, for a house whose area is 100 sq. m., a boiler with a power of 12 kW.

Attention! If the boiler is required for year-round use, then you need to choose two-stage device or unit with adjustable power.

Camera type immediately affects a number of boiler operating characteristics. The combustion chamber closed type allows you to install the boiler in limited space. The main thing is that it is next to the outer wall of the building, through which the coaxial chimney used with a closed chamber is discharged.

For combustion chamber open type you will need to install a chimney and ensure air flow into the room. Thanks to the closed system, the closed type has higher productivity and savings than the open type. But a device with a closed chamber also costs more.

When choosing a fuel type It is important to note that modern boilers are designed to operate as on natural, and on liquefied gas. But it will be an advantage if there is a gas pipeline at the place where the boiler is installed, since it is cheaper, more convenient and safer. The characteristics of each device indicate what fuel consumption is when operating on natural and liquefied gas. By default, the gas boiler is configured to operate on natural gas, so when switching to a liquefied unit, you will have to reconfigure it.

Gas boiler efficiency- an important parameter from the point of view of the ratio of the costs of operating the device and the results of its operation. The optimal efficiency range for wall-mounted boilers can be considered 90—95%. At low efficiency, more fuel is wasted, and at high efficiency, more expensive elements for the device are required - for example, copper heat exchangers.

Wall-mounted double-circuit boilers use heat exchangers made of copper and stainless steel. First transfer heat well second- more reliable in operation.

In the boiler they can stand as couples solid-steel, so steel-steel heat exchangers. One is responsible for the heating circuit, the other for the hot water supply.

There are also models of boilers with bithermic copper heat exchangers, the operation of which is organized according to the principle "pipe in pipe".

Hot water supply- an important function of a double-circuit boiler. Therefore, when purchasing it, it is worth studying in the data sheet such an option as DHW performance. Usually the parameters indicate at what temperature And how many liters the boiler can heat? For homes where hot water from taps is used quite often, this point plays an important role.

All these parameters must be taken into account in order to effectively use a gas boiler. At the same time, it is worth using its resource sparingly - for example, do not turn it on at maximum power for a long time. In case of regular care ( technical inspection once a year) and proper operation, the device can serve properly for quite a long time - on average up to 15 years. You can choose the appropriate option for a particular building by studying the rating of models. In it, the boilers are located as the coefficient of performance (efficiency) decreases.

Rating of the best models and manufacturers

Wolf CGG 1K 24

The gas boiler made in Germany has maximum power 24 kW. It is enough to provide heat for a building with an area of about 200-odd sq. m. The device has a closed combustion chamber.

This involves the use of a coaxial chimney.

The use of a copper heat exchanger for the heating circuit and a steel heat exchanger for hot water allows a stable supply of heat from the boiler to the premises and to the hot water taps.

At a temperature +35 °C 8.6 l. The device occupies the first line of the rating due to its high efficiency - 93.0%. To other advantages Wolf CGG 1K 24 can be attributed to the light weight - 40 kg and noise level 38 dB. The device allows consumption of natural gas and 2.8 cu. m per hour and liquefied - 2.1 kg per hour.

Baxi Luna 3 Comfort 240 Fi

Made in Italy, this unit is designed to deliver 25 kW. It is suitable for heating rooms larger than 200 sq. m. The device has a closed combustion chamber, with which a coaxial chimney is used. They work in the boiler two separate heat exchangers: copper and stainless steel.

Photo 1. Wall-mounted gas boiler Baxi Luna 3 Comfort 240 Fi. The device is installed on the wall and connected to the heating circuit.

DHW performance at temperature +35 °C amounts to 10.2 l. According to efficiency 92.9% Baxi Luna 3 Comfort 240 Fi in second place, but some of its characteristics are higher than those of the leader. For example, the noise level is only 32 dB, and weight - 38 kg. However, the device has a slightly higher maximum natural gas consumption - 2.84 cu.m. m per hour, as well as liquefied - 2.12 kg per hour.

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Bosch ZWA 24 2K

This device was developed in Germany and manufactured in Turkey. Maximum boiler power 22.00 kW. This is enough to heat the room about 200 sq. m. The boiler has an open combustion chamber, which requires the presence of a chimney and ventilation in the room. A special feature of this model is the bithermic (pipe-in-pipe) copper heat exchanger, which makes the device more compact.

At a temperature +35 °C DHW circuit performance corresponds to 9.8 l. Efficiency reaches 92.0% . According to this indicator Bosch ZWA 24 2K ranks third in the ranking. The natural gas consumption of the device is equal to 2.52 cu. m per hour, and liquefied - 1.93 kg per hour. The boiler weight does not exceed 36 kg.

Photo 2. Wall-mounted gas boiler from the manufacturer Bosch, model ZWA 24 2 R. At the bottom there is a control panel.

Baxi Main 5 24 F

The boiler is designed and manufactured in Italy. Its maximum power corresponds to 24.00 kW. This is enough to heat a slightly larger room. 200 sq. m. The device has a closed combustion chamber, which implies the presence of a coaxial chimney. This boiler also has a bithermic copper heat exchanger, which increases its heat transfer.

At temperature +35 °C The performance of the DHW circuit of the device is 9.8 l. Your place in the ranking Baxi Main 5 24 F occupied due to lower efficiency than other devices - 90.6% . The device consumes natural gas within 2.78 cu. m per hour, and liquefied - 2.04 kg per hour.

Navien Deluxe 24K

The device is developed and manufactured in South Korea. Its power corresponds 24.00 kW, which makes it possible to provide heating for more than 200 sq. m. room area. The boiler has a closed combustion chamber. A coaxial chimney is used for it. The boiler has two stainless steel heat exchangers.

Photo 3. Navian Deluxe 24K gas boiler. The top cover of the device is removed, its internal structure is visible.

At a temperature +35 °C DHW productivity is 9.9 l. The boiler took its place in the ranking thanks to its efficiency 90.5% . The natural gas consumption in the boiler is 2.58 cu.m. m., and liquefied - 2.15 kg per hour. The boiler weighs only 28 kg and has one of the lowest noise levels - 35 dB.

Baxi Nuvola 3 Comfort

The Italian-made brand offers a whole line of models, of which the best option for a small home can be called Baxi Nuvola 3 Comfort 240 i. The boiler is designed for power 24.40 kW. This is enough to heat more than 200 sq. m. room area. An open combustion chamber requires a separate chimney and ventilation in the room.

Copper and steel heat exchangers work for the heating and DHW circuits. At temperature +35 °C DHW performance reaches 10 l. Its place in the ranking boiler model Baxi Nuvola 3 Comfort 240i occupied thanks to efficiency 90.3% . The natural gas consumption of the device corresponds to 2.87 cu.m. m per hour, and liquefied - 2.2 kg per hour.

If you have a gas main near your house, then the best and most cost-effective solution would be a gas boiler. And in order for your equipment to work smoothly and properly, you need to know how to choose gas boilers for, what criteria and parameters need to be taken into account. Our review will help you understand the existing variety of models and make the right choice of a functional and convenient design.

Areas of application of gas boilers for heating and hot water supply of a private home: types, pros and cons of designs

If you can choose a good one for a private home, then this can be an advantageous solution compared to - they are not particularly convenient to use, but are too expensive.

Here's why you should choose a gas unit:

• automated work that does not require your constant attention and control;
• fuel is not as expensive as, for example, electricity;
• you can start the unit at any time, and no preliminary preparation is required;
• with proper care, operation will be safe;
• high level of efficiency;
• Gas equipment can only be serviced once a year;
• In order for the device to work, you do not need to provide access to electrical networks.

The correct choice of unit will allow you to heat even houses with a large area. If there is no gas line, then the use of gas cylinders should not be ignored. But this method requires special care. For example, cylinders can be installed outside the house, and a special pipe can be installed from them. They must be covered from the outside. Most often, metal fences are used for this.

It is worth studying some of the disadvantages of such units:

• to connect to the gas line, a special permit is required;
• you need to consider the possibility of regular maintenance;
• gas leakage must not be allowed, as this will lead to an explosion;
• There are certain types of boilers that require a separate room.

When choosing a suitable device, pay attention to the heat exchanger. It can be steel, copper, cast iron or bimetallic. Copper options are known for ease of use. If they break, they can be easily repaired. If you value practicality, then the best solution would be bimetallic or steel heat exchangers.

The most reliable options include cast iron models, which heat up quickly and are resistant to corrosion. Such heat exchangers are more often used in floor structures.

Boilers can be double-circuit, single-circuit, convection, wall-mounted, floor-mounted and condensing. But that’s not all that such equipment can differ in. There are also some design features:

• the automation system can be in the form of mechanical control or based on electronic modules;
• The necessary piping of units includes expansion tanks and all kinds of security systems;
• Thermostats, remote control modules and special control panels can be used as control mechanisms;
• some models are provided with different capacity volumes. These tanks allow you to store supplies of heated water for a certain period of time.

Let's consider the main classification of gas devices. Here are the main categories:

• According to the installation method, the equipment is divided into wall-mounted and floor-mounted models;
• for heating liquids into single-circuit and double-circuit;
• According to the options for removing combustion products, the structures are turbocharged and chimney.

Wall variations appeared not so long ago. Inside the case there are all the necessary elements: expansion tank, pumping equipment, pressure gauge, heat exchanger and thermometer.

For your information! Gas equipment is the most budget option for organizing high-quality heating.

Gas boilers for heating a private home: how to choose the best option

The choice of a gas boiler for heating a private home is influenced by such a parameter as power. For wall-mounted products, the maximum rating is 60 kW, and for floor-standing products it can be more than 100 kW. Also, when deciding on a model, it is worth considering factors such as cost and manufacturer. If there is no main line, then liquefied gas will do. In this case, you can choose a boiler with a burner.

Also look at the prices of gas boilers for heating a private house up to 100m2. This parameter depends on the manufacturer, construction material and additional functionality.

Wall-mounted models can have two types of burners: turbocharged and atmospheric. Gas boilers can also be condensing. They can be used at low temperatures. In this case, the gas is not consumed so quickly due to vapor condensation.

For your information! To choose the appropriate option, first read reviews and study the opinions of experts and characteristics of different models.

Where to install the equipment: wall-mounted and floor-mounted gas boilers

The choice of equipment begins with the selection of placement options. You can purchase floor- and wall-mounted models of gas boilers for heating your home. The two varieties have certain differences and features:

• wall devices do not depend on electricity. To prevent the unit from creating a large load on the wall, production tries to reduce its weight using different alloys. Such models will appeal to those who want to save more space; for example, they can be built into a cabinet in the kitchen. In addition, many people like the easy installation of wall-mounted gas boilers;

• floor devices may have unlimited performance. There are double-circuit and single-circuit models with heat exchangers made of cast iron and steel. Such a device will take up a lot of space, so its installation should be thought out in advance. Depending on the configuration, the device may have an atmospheric or turbocharged burner.

Floor-standing models are often equipped with cast iron heat exchangers. Wall-mounted options are compact. The price of a wall-mounted double-circuit gas boiler for heating a private house depends on the material of manufacture.

For your information! When choosing the appropriate option, consider the area of ​​the building. If the house is more than 200 sq. m., it is better to choose a floor-standing unit. At the same time, the price of a floor-standing double-circuit gas boiler for heating a private house will be less than its wall-mounted counterparts, but they require a lot of free space.

Equipment and number of circuits

Gas units can be double-circuit or single-circuit. Each option has some advantages and disadvantages:

• The operating principle of a double-circuit gas boiler is based on the mode. This option is used for heating and water heating. Most often it is equipped with two heat exchangers. To reduce weight, the equipment is equipped with a bithermal heat exchanger that operates in an interchangeable heating mode;

• a unit with one circuit is equipped for heating the coolant. In the future, it is possible to convert the design of a single-circuit gas boiler with an indirect heating boiler.

Gas double-circuit boilers for heating a private home are much more compact, which allows them to be used in rooms with limited space. In double-circuit designs there is a boiler and a gas one. If the DHW circuit is running, the heating function is switched off.

Single-circuit models are larger and have more complex installation. If a boiler is additionally used, the design can be equipped with circulation pumps. Devices with one circuit are equipped with a heat exchanger and burner.

Types of combustion chambers

In gas boilers, an open and closed combustion chamber is installed depending on the equipment option. There are three configurations:

• atmospheric units They are highly reliable and have a simple design. There is an open combustion chamber inside. In order for the gas to be burned, air is taken from the room. Regulation is carried out using thermomechanical regulators. When choosing them, remember that the disadvantage of such devices is significant gas consumption and special installation requirements. But at the same time, the efficiency of the device is not so high;

• turbocharged model A floor-standing gas boiler with a closed combustion chamber is equipped with two fans, for gas removal and for air supply. In this case, these processes are carried out forcibly, which is called using turbines or fans. Many people prefer such units because of their efficiency. Gas consumption can be reduced by 20-30%. In this case, the efficiency reaches 95-98%, but noise may be felt during operation;

• The most economical options include condensing wall-mounted double-circuit gas boilers with a closed combustion chamber. Their efficiency can reach 109%. The device is equipped with a modulation burner. These models are non-volatile. The heat exchanger contains a condenser or unit responsible for collecting condensate. The units operate on liquefied or natural gas. They are used for connection to low temperature structures.

At home, equipment often operates according to a convection scheme:

• the burner produces thermal energy;
• the heat exchanger takes the heat;
• the heat moves into the heating system, and the remainder is released into the atmosphere.

How to calculate the power of a gas boiler

• calculations using an online calculator. In this case, you need to enter the area, the number of window and door openings and the level of thermal insulation;
• the approximate power can be found using the approximate formula - 1 kW = 10 kW. m.

However, this indicator may vary depending on climatic conditions. For northern regions it is 1.3-1.5 kW, and for southern regions it is approximately 0.8 kW. It is important to take into account heat losses, which are influenced by the following factors:

• window structures;
• insulation of the attic or heated second floor;
• Availability ;
• the presence of external walls;
• ratio of floor to wall area.

How to properly replace old equipment with new one: installation nuances

Over time, replacement may be required as it becomes obsolete and its efficiency decreases. If the efficiency of the equipment has decreased, the unit is noisy and smokes, then this is a sign that it needs to be replaced.

Since such equipment is a critical and dangerous part of housing, its installation and maintenance are carried out by special government agencies. You cannot make a replacement yourself and without notifying the relevant structures. Incorrect installation can endanger the lives of many people.

If you need to replace equipment, here are the steps you should go through:

• writing an application to a special responsible body. If the boiler is replaced with a similar one, its installation diagram remains unchanged. If you change the pipe supply diagram, location and type of the main unit, the project will need to be done anew;
• After permission has been received, you must obtain a passport, which is submitted to the gas service.

The replacement of a gas boiler is carried out by a company that has a special certificate for carrying out such work.

Before installing a new device, dismantle the old one:

• First you need to flush the entire system. This removes all old contaminants that could interfere with the operation of new devices;
• all water from the heating system is drained;
• the boiler is disconnected from the gas source, and then from the hot and cold water supply. There is also a disconnection from the ventilation system.

How to install a gas boiler in a private house: installation requirements

There are special standards for installing a gas boiler. You cannot install more than two devices in a room with an area of ​​less than 7.5 square meters. Here are the requirements for installing the floor structure:

• It is better to arrange a separate room for installing the boiler. It is important to ensure natural air flow through the grille or hole in the wall;
• a separate hole is provided for the supply and exhaust;
• the chimney must be sealed so that carbon dioxide and smoke do not penetrate into the room. To do this, a smaller pipeline is installed inside the main pipe;
• the room where you will install the device must be spacious enough to provide convenient maintenance and easy access to the device;
• the floor covering must be made of non-combustible materials;
• the width of the outer door should be approximately 80 cm;
• the upper part of the chimney must be installed above the roof;
• a separate valve must be connected for each device;
• boiler room walls only. You cannot use materials such as plastic or MDF for finishing.

In apartments, such equipment is often installed in the kitchen. There are some requirements for wall structures:

• the wall must be solid to withstand the load of the equipment;
• if the walls are lined with flammable materials, then a layer of some kind of fire-resistant material is installed between the unit and the wall;
• the minimum distances from the device to the walls and ceiling must be at least half a meter, and to the floor - 0.8 meters.

Before installation work and commissioning of equipment, it is necessary to obtain permits.

How to connect the boiler and features of installation work

Installation of a gas boiler in a private house is carried out using different connection diagrams. Two pipes for coolant can be connected to a single-circuit device. In this case, the coolant will flow through the system and return for additional heating.

When using an additional boiler, a connection via . While the water is heating up in the boiler, the coolant stops circulating. How long it will take the boiler to warm up depends on the size of its container.

The connection diagram for double-circuit gas boilers is due to the presence of two heat exchangers. In this case, the main one heats the water for heating, and the second heats the water for water supply. 5 pipes are connected to this design. Pipe with coolant, line with cold water, gas, with hot water and with hot coolant.

The connection to the gas source is carried out by gas workers. In this case, a shut-off valve must be installed to shut off the gas. A special filter must also be installed. A pipe from the boiler runs through it, which should be made of stainless steel. The line is mounted to the pipe using a union nut. All joints must be sealed.

Particular attention should be paid to equipment automation, as this will not only ensure safety, but also save on fuel.

Important information! To check the tightness of the equipment, all joints are treated with a soap solution.

How to choose a voltage stabilizer for gas boilers

For a gas boiler it depends on the following parameters:

• response time affects the quality of equipment automation. This indicator means how quickly the stabilizer can adjust the voltage;
• The voltage range is important, indicating within what limits the rectifier operates. When a certain value is reached, the mechanism turns off the equipment;
• the degree of correction affects the stability of the output voltage;
• operating temperature range is +5 - + 40 degrees.

For a gas unit, choose a relay, inverter or electronic type of stabilizer.

Review of manufacturers and rating of floor-standing gas boilers

We present to your attention an overview of some floor-standing models from well-known manufacturers. However, price categories can vary greatly. You can find cheap Chinese devices and expensive models with turbocharged combustion chambers. Among the manufacturers it is worth noting such companies as Bosch, Baxi, Ferolli And Valliant. Among domestic manufacturers, it is worth noting the Irbis company.

Image	Models	Prices, rub
	Protherm Bear 40 TLO	69600
		134500
	ZhMZ AOGV-23.2-3 Comfort N	29700
		140500
	Baxi SLIM 2.300 Fi	116300

PROTHERM BEAR 40 TLO

The Prothern plant is located in Prague. Boilers from this manufacturer are characterized by durability and reliability. The Bear 40 TLO unit is resistant to difficult hydraulic conditions, and it does not depend on the electrical network. The equipment is used for hot water supply and heating. The design includes a heat exchanger made of cast iron and a burner made of stainless steel. Using the control panel, you can monitor and adjust the operating parameters of the unit. A cooling circuit is used for control to prevent overheating of the coolant. Electric ignition is designed for convenient starting of the unit.

The equipment is available in different variations, with power varying from 18 to 45 kW. It is used for heating all kinds of buildings with a natural type of circulation, and in some cases with forced circulation. The boiler can also operate on liquefied gas.

Draft control for the chimney is provided. It is also resistant to complex hydraulic conditions. Additionally, you can purchase a storage broiler for heating water.

The advantages include:

• high efficiency;
• economical fuel consumption;
• significant protection class.

Floor-standing units are designed for heating domestic premises. Installation of indirect heating boilers is also provided. This model can last more than 15 years, thanks to a durable cast iron heat exchanger. The device operates on main gas, but can also operate on liquefied gas. Manufacturers recommend supplementing the device with a special voltage stabilizer.

The device assumes an open combustion chamber. It can function normally on both natural gas and liquefied gas. The design is installed on the floor and has an efficiency of 92%. The device does not have a circulation pump.

Here are some features of the Vitogas 100 F:

• high operational capabilities under pressure fluctuations;
• long service life;
• use of silent ignition;
• built-in ;
• compact dimensions and light weight.

The Zhukovsky Machine-Building Plant produces single-circuit AOGV and double-circuit AKGV models. The company's product range includes more than 30 types of boilers. All devices have high efficiency. The price of a heating boiler for a private home depends on the configuration and materials. The equipment is equipped with both domestic and imported automation. It is used to operate systems with forced and natural circulation.

AOGV Comfort is suitable for heating residential and office premises. Installation of the device, its commissioning and commissioning is carried out by gas service specialists. The unit can operate on liquefied and natural gas.

The automatic unit allows for smooth adjustment of gas flow. In this case, it is impossible to leave the working mechanism unattended for a long time (more than a day). The equipment is connected to a separate one, but ventilation ducts cannot be used in this capacity.

The Economy model is one of the best gas units. It is suitable for closed and open heating systems. The design is electrically independent. Control and launch are carried out using an automation unit. The boiler has a reliable safety system that protects against overheating.

If there is no connection to the central line, you can switch the boiler to liquefied gas. This can be done by replacing the injectors. Such a mechanism can be installed in a closed system with a membrane-type expansion tank.

Installation in a residential area is possible if there is a chimney with combustion products exhaust. In this case, the pipe must be at least 5 meters. The boiler must be installed near walls with non-combustible finishing at a distance of 15 cm.

Using a boiler of this brand, you can heat rooms with an area of ​​up to 380 square meters. m. If necessary, you can also install a broiler for hot water supply. A heat exchanger made of high-strength cast iron is provided inside.

It is worth noting some characteristics of this device:

• gas burner available;
• single-circuit design;
• maximum power 38 kW;
• efficiency is 93%;
• electronic control type available;
• There are options for a power indicator, flame modulation and auto-ignition.

The model is not equipped with a built-in boiler. Due to the high power, gas is not consumed economically.

If you decide to purchase a Baxi Slim 2300Fi gas boiler with a built-in boiler, then you should know that reviews of such equipment are positive. The units of this company are famous for their reliability, convenience and are suitable for use in domestic conditions.

The Slim 2300 device is a floor-standing model with a cast iron heat exchanger and an enameled steel boiler. There is a high-speed circulation pump with an automatic air vent, pressure gauge and safety valve. The device has a remote control device with a climate regulator.

The equipment has the following advantages:

• aesthetic qualities;
• ability to work at low pressure;
• a boiler with a pump and pressure meter is available;
• the burner is made of stainless alloy;
• smooth electric ignition is provided;
• there is an electronic type indicator;
• There is a self-diagnosis system.

This boiler belongs to the fourth generation equipment, its power reaches 48 kW. The device combines traditional devices and condensation technologies. Such a powerful unit can be used to heat houses with an area of ​​more than 500 square meters. m.

This equipment has the following features:

• high level of efficiency and productivity;
• suitable for replacing old heating systems;
• fuel efficiency.

Article

Gas boilers are designed not only for heating a house, but also for organizing a hot water supply system. There are several varieties, so before purchasing you need to determine which design will be most suitable.

All boilers on sale can be divided into two large groups: single-circuit and double-circuit. The first type is intended exclusively for creating a comfortable temperature in the room, while the second is also used to supply hot water. Double-circuit boilers are more compact in size, but the conditions of use are subject to increased requirements. In particular, to automatically shut off the hot water supply, the incoming flow must have a fairly high pressure. Because of this, it is almost impossible to save hot water.

For large rooms, double-circuit boilers will not be the most suitable option, especially if the water intake equipment is located quite far from the boiler. Single-circuit products are large in size and difficult to install.

Also, all boilers on the market can be divided according to the installation method - floor-mounted or wall-mounted. Floor-standing ones are more powerful, have significant dimensions, and can be used to heat a room of about 600 square meters. m. Our ranking of the top 10 best gas boilers presents all types of similar heating equipment. When compiling it, we take into account the price-quality ratio of the model, customer opinions and reviews, and many other factors. We hope that our rating will help you decide on the most suitable model.

List of the best models of gas boilers for home heating

10.BAXI SLIM 1.300 iN

High-quality floor structure equipped with a heat exchanger made of cast iron. It has an electronic system for adjusting the water temperature in the system and self-diagnosis. The device is easy to install, use and maintain, and does not require regular maintenance.

The boiler has an attractive appearance: even if it is in plain sight, it will not spoil the interior of the room at all; it has acceptable dimensions - only 35 cm in width. If necessary, you can connect to it an external storage-type boiler, which is used to supply hot water. The temperature range is 30-85 degrees in a standard heating system and 30-45 degrees when using the heated floor option. For the boiler, you can additionally purchase a remote control with a climate regulator; there is an outdoor temperature sensor, thanks to which the automation will adjust to weather conditions.

Advantages:

• Convenient overall dimensions;
• Heated area up to 365 sq. m - it is quite enough for a two-story house;
• Cast iron heat exchanger, characterized by a long service life;
• High efficiency – approximately 90%;
• Small overall dimensions;
• An electronic protection system is provided.

Flaws:

• The valves are not very tight - gas popping is heard during ignition;
• The need to connect to the power grid.

9. Ariston GENUS Premium EVO 24 FF

Wall-mounted double-circuit equipment equipped with improved consumer qualities. The appearance of the boiler is beautiful; on the front panel there is a small monochrome display and several buttons that allow you to adjust the temperature in the heating and hot water system.

It operates almost silently, consumes a small amount of gas - a maximum of 2.5 cubic meters per day. The design includes a modulating fan that adjusts automatically; there is a high-power circulation pump that ensures the rapid passage of water through the heating system. The primary heat exchanger has a significant volume, is made of stainless steel, and has a protection system against scale formation and freezing. If necessary, you can additionally purchase a number of accessories to adjust the temperature from a distance.

Advantages:

• Convenient multifunctional liquid crystal display;
• Modulation pump;
• Programmable timer;
• Primary heat exchanger made of stainless steel;
• Frost protection;
• The circulation pump is blocked if necessary.

Flaws:

• Quite expensive;
• Spare parts and repairs are also expensive.

8. Navien GA 35KN

It has small dimensions and low weight - the device is convenient to transport and easy to install, even on your own. The connecting pipes are located on both sides of the boiler, which has a positive effect on the installation and connection process. The design includes a SMPS (Switched Mode Power Supply) protection system, which protects equipment from voltage surges of up to 30% up or down. At the same time, the boiler will function reliably, without various failures, which increases its service life.

If the room temperature drops, the frost protection system automatically turns on. The inflatable burner has a special fan that effectively removes all combustion products into the chimney. The kit includes a remote control to make using the device easier. The menu is completely Russified, there is a liquid crystal display equipped with backlight.

Advantages:

• Convenient control system;
• It works quite quietly;
• The device is completely Russified;
• All elements are reliable and durable.

Flaws:

• Does not function without electricity;
• Sometimes problems arise with hot water supply if the water pressure in the supply system is insufficient.

7. Protherm Panther 25 KOO

This is the only single-circuit design in our rating of gas boilers designed for wall installation. If necessary, an external boiler can be connected to the device. The boiler has high performance capabilities and acceptable overall dimensions. This equipment is controlled using a special built-in processor, which is responsible for independently diagnosing the unit and adjusting the temperature in the system. The kit includes an automatic coolant circulation system, due to which the boiler will function reliably with any type of heating.

It is completely safe, has a protection system against overheating, freezing, serious voltage surges, short circuits, and can withstand even high indoor humidity. The boiler has good performance indicators; the front panel has a fairly informative display with a Russian-language menu. If desired, you can additionally purchase an accessory that is responsible for automatic adjustment depending on weather conditions.

The efficiency is more than 90%, the highest gas consumption is 2.85 cubic meters per hour. The boiler effectively heats houses whose area does not exceed 250 square meters; the coolant temperature ranges from 38 to 85 degrees. The design has a built-in expansion tank, its volume is 7 liters. The heat exchanger is reliable, made of copper, and brings the water temperature well to the specified limits.

Advantages:

• Easy to install and operate;
• Almost all work processes are automatic;
• Ability to function in high humidity conditions.

Flaws:

• There is no automatic start system when there is a power outage;
• Requires annual prophylaxis.

6. Bosch Gaz 4000 W ZWA 24-2 A

Wall-mounted equipment designed to operate on the basis of natural or liquefied gas. The device is equipped with a closed combustion chamber; combustion products are removed outside the room using a special fan. To ensure safe operation, the boiler has a Cotronic safety system, characterized by ionization flame control and several solenoid-type valves. It ignites automatically thanks to the presence of piezo ignition.

The heating pump is three-stage - this allows the device to be used for large areas: about 200 square meters. The design has a reliable feed tap, and also includes a sensor to protect equipment from overheating. The volume of hot water is about 17 liters per minute - this amount is quite enough for a family of four. The maximum gas consumption is 2.7 cubic meters per hour. If the draft is lost, the boiler automatically turns off. The boiler has a summer operating mode, when it will only function for preparing hot water.

Advantages:

• Low cost;
• Easy to maintain;
• Quiet operation;
• The controls are very simple.

Flaws:

• Requires electricity to operate;
• The kit does not include a voltage stabilizer, since surges in the network can negatively affect the functioning of the device.

5. Ariston CLAS B 24 FF

The wall-mounted boiler, which takes up a minimum amount of free space and is installed on the wall, has a power of 24 or 30 kW, depending on the configuration. It is used for both heating and hot water supply. The design has a built-in stainless steel boiler with a capacity of 40 liters. Essentially, this is a single-circuit product, but due to the storage tank, it is capable of producing enough hot water for a family of two or three people.

In the rating of gas boilers, this is the most original unit; moreover, the water in the boiler heats up very quickly - in just 10-15 minutes. The design has a digital liquid crystal display that makes it easy to control the device.

Advantages:

• There is a delay function for turning on the equipment;
• Availability of a protection system against freezing and scale formation;
• There are two heat exchangers - for heating and hot water supply. The first is made of copper, the second is made of stainless steel;
• Cost-effective;
• Virtually no extraneous noise;
• Minimum waste is released into the atmosphere.

Flaws:

• There is no filter at the cold water inlet;
• There is no programming mode.

4. Vaillant atmoVIT VK INT 324 1-5

One of the best floor-standing gas boilers, it compares favorably with other models presented in this rating due to its efficiency and compact overall dimensions. It is suitable not only for domestic use, but also for heating production areas - up to 320 square meters. It has the ability to connect an external boiler to provide hot water.

The heat exchanger is made of cast iron, resistant to corrosion processes, and has five sections. In order for the device to function as reliably as possible, it is advisable to connect it to the mains via a voltage stabilizer. The boiler is equipped with an open combustion chamber, so it must be connected to a vertical chimney so that combustion products escape into the atmosphere naturally. The control system is equipped with a digital display with a Russian-language menu, which makes setup as convenient as possible and also allows for complete control over the operation of this device.

Advantages:

• The boiler independently diagnoses problems in its systems;
• Reliability and durability;
• Possibility of connecting a boiler to create a hot water supply system;
• Gas supply level control system.

Flaws:

• Considerable mass;
• Lack of expansion tank in the design.

3. Buderus Logamax U072-24K

This double-circuit boiler is designed for wall installation, equipped with a closed combustion chamber and a dismountable casing, which is quite convenient for cleaning. Initially, it was created exclusively for Russian climatic conditions. A plate-type heat exchanger is capable of quickly heating water both in the heating system and for distribution to the required temperature. The volume of hot water is quite enough for a family of several people; the boiler itself shows itself effectively in a house of up to 240 square meters. m.

The controls are clear, so all parameters are set almost instantly. The user interface is displayed on a convenient liquid crystal display, due to which all changes will be viewed in real time. The boiler is capable of functioning in the most difficult conditions: it tolerates voltage fluctuations well, as it is designed for a range from 165 to 240 V, it can be used even with fairly hard water. The maximum gas consumption is 2.8 cubic meters of gas per hour, the maximum hot water temperature is 63 degrees, the coolant heats up to 85 degrees. The device weighs only 30 kg, so it can be installed by one person; connection to the main systems must be done by specialists.

Advantages:

• Light weight, attractive appearance;
• Easy to operate;
• All necessary information is displayed on the liquid crystal display;
• A reliable safety system that prevents the device from freezing, excessive or insufficient pressure, there is a flame sensor;
• Wide burner range, due to which the hot water temperature can be adjusted from 40 to 60 degrees;
• Service is simple and convenient;
• There is a built-in expansion tank with a working volume of 8 liters.

Flaws:

• Plastic supply tap, which quickly fails;
• The exhaust fan is another weak point of the boiler.

2.BAXI Main 5 24 F

One of the best gas boilers for a private home, it is equipped with an absolutely safe closed combustion chamber. This eliminates gas leaks during operation of the equipment; combustion products are discharged into a special turbine, through which they are forced into a coaxial chimney with a diameter of 60/100 mm or into a two-pipe system, the diameter of which should be 80 mm.

The design has a gas burner, equipped with nozzles made of stainless steel. The Grundfos circulation pump is equipped with an automatic air vent. The boiler is a double-circuit flow-through type, its maximum power is 24 kW, it is capable of heating a house with an area of ​​no more than 220 square meters. m.

Advantages:

• The design provides only all the necessary capabilities;
• Acceptable price;
• Small dimensions;
• Light weight;
• A large number of authorized service centers.

Flaws:

• The need to connect to the network through a stabilizer, since the board is very sensitive to voltage drops.

1. Protherm Bear 30 TLO

The recognized leader in our ranking of the top 10 best gas boilers is this model. It has the best ratio in terms of price and quality, and has high performance indicators. The product is equipped with a closed combustion chamber, which immediately makes it absolutely safe during use. The heat exchanger is made of thick cast iron.

The equipment is intended exclusively for heating a house, the maximum power is 30 kW, the boiler does not require connection to the electrical network, which gives it a tangible advantage over other models. Even in the absence of electricity, the house will remain warm. The performance is quite high - efficiency is 90% at 30% equipment load. The body is made of stainless steel, has small dimensions, and with this boiler you can heat a building with an area of ​​up to 270 square meters.

Advantages:

• Cost-effective;
• Acceptable price;
• Non-volatile (not dependent on the power supply system);
• Long service life;
• Ignition is produced using the “unquenchable flame” technology;
• Built-in thermocouple that produces the voltage required for normal operation of the boiler;
• A large number of protective and control systems;
• If necessary, you can connect a boiler;
• Assembly reliability.

Flaws:

• Not detected.

In conclusion, useful videos

Gas heating is often used to provide a comfortable microclimate in modern buildings.

More than half of all buyers in Russia choose this option.

Making the right choice of a gas boiler for a private home is not so difficult; it is enough to understand the main features of the device.

In fact, any gas boiler becomes the main component in the heating system.

Without it, the coolant does not heat up.

And is not able to circulate along the circuit that makes up.

Gas devices today are produced in a wide range.

There are the following signs according to which devices are divided into several groups:

• A number of features inherent in designs
• By what method does the coolant move?
• Where is the device mounted?
• How much power do they have?

These signs themselves are interdependent. Therefore, we can consider each of the points separately.

Power indicator

Domestic boilers include any boiler used in the system of a country house. Power is usually in the range of 5-500 kW. Most models need 10-35 kW.

How do you know how much power a particular customer needs? There is a concept of an average standard that is suitable for most situations. About 1 kW of device power is consumed to heat 10 square meters of area in standard rooms.

Power increases with ceiling heights of 3 meters or more. Therefore, devices are purchased with a reserve.

But in practice, the figures often become smaller. This is due to the technical features that the device has. The power distribution in this case is alternate.

The design of the house, climatic features are factors that receive no less attention. More power is required if the device is operated in northern regions.

Or in houses with very thin walls. Choosing a gas boiler for a private house of 70 sq.m. should not cause much trouble.

What to do with the location

According to this criterion, gas boilers are:

• Wall mounted
• Floor-standing

Floor-standing – those that are mounted only on the floor. It is advisable to place them in a vestibule or in another separate room.

Such devices have a number of advantages:

• Wide range of models.
• Long battery life. Typically, the device can operate uninterruptedly for 2 days - 1 month.
• Easy maintenance.
• Versatility. For work, you can use any available types of fuel.
• Economical.
• Performance, high power at 0.5 mW.

The efficiency of modern devices reaches 90 percent. Most of the devices are non-volatile. This means that they work without .

There are systems with a long burning function. They have only two main elements: equipment for automating fuel supply plus the boiler itself.

But floor-standing models are not without their disadvantages:

• They have large dimensions.
• Requires a separate place for installation.
• They do not work without a chimney that consistently performs its functions.

Floor-standing boilers require a solid base made of iron or. But this is the optimal solution for those who do not need a boiler specifically in residential premises.

A little about wall-mounted boilers

They make up about half of all gas devices that actually work in homes. The classic option is when the device is placed on the wall, in the hallway or in the kitchen.

Among the advantages:

• The system does not have a chimney in the classical sense. Mount a compact, coaxial version of this device.
• The operation is absolutely silent.
• High efficiency rate.
• Easy to use. It will not be difficult to select the required temperature mode.
• Almost complete automation.
• Attractive appearance.
• Light weight with size.

But it is not without its shortcomings.

• The boiler cannot immediately work both to heat the premises and to bring the water to the required temperature.
• There are some restrictions on the maximum power and area of ​​​​rooms that are heated in this way.
• The devices have strict requirements for the quality of coolants.
• Most models are volatile

Wall-mounted devices will be a good solution in small homes. They do not require much space for installation. Combustion products will be discharged through a coaxial chimney. is carried out directly into the wall.

How can coolant move?

The type of heating circuit is of great importance for those who choose a suitable boiler. To be more precise, the way the coolant circulation is organized plays an important role. Water usually moves in one of two ways:

• Forced intensification of the process. What are circulation pumps used for? Most boilers have such pumps already built inside. If they are not there, then the structures can be easily mounted separately - in the lower part of the heating circuit.
• Sometimes heat is responsible for the circulatory movement. The liquid moves upward along the circuit when it heats up to a certain temperature. Its place is taken by another liquid that did not have time to warm up. The cycles repeat endlessly until the device turns off.

Design features

First, the water ends up in the heating circuit.

And then moves on to the heat exchanger.

The latter heats up due to the combustion of gas.

With the help of burners, the gas begins to be compressed.

In total, each design has two burners - one pilot, the other - main.

The main one is needed to maintain normal operating conditions.

The second helps the main one to light up after the device stops working and turns on the “standby” mode.

Boilers are “ignited” in different ways - automatically, manually. Or using electricity. There is also a “piezo” option.

Gas boilers can be:

• With two circuits.
• Single-circuit.

The second type of model is equipped with only one circuit through which the coolant moves. This is where the heating system is heated.

In the second type of circuit there are two - the second is for water, used for domestic needs. It is suitable for those who want to choose a gas boiler for a private house of 200 sq.m.

It is the second circuit that is called the DHW circuit. Inside the structure there is a heat exchanger, one or two.

Boilers are divided into groups depending on the materials from which the heat exchangers are made:

• With copper as a base.
• Made from stainless steel.
• Silumin.
• Of steel.
• On a cast iron base.

Cast iron and steel are the most widely used. The first material retains heat for a long time, but remains fragile. Steel is short-lived, although it also conducts heat well. Stainless steel based on silumin also has high characteristics. But they are quite expensive.

In condensation-type boilers, preference is often given to silumin heat exchangers. They differ from others in that the coolant moves through them at a lower temperature.

The difference, compared to conventional models, reaches 10-20 degrees. Gas combustion products are used to heat water. Thanks to this operating mode, less condensation appears on the heat exchanger.

There are classic varieties where moisture condenses due to the difference that appears between the outgoing and incoming liquid temperatures. Such models are best used in conjunction with warm radiators with a large number of sections.

Then the low coolant temperature ceases to be a serious problem. Compensating devices have a high efficiency of up to 90-95 percent.

Many systems contain elements responsible for operational safety and automation. Such elements usually consist of:

• Draft sensors in chimneys.
• For working with fans.
• Valve mechanisms for relief, protection from dangers.
• Control units with indication of the corresponding operating mode. They use electricity or operate on an automatic basis.

Most of the space inside the structure is given to gas fittings. The same applies to the circulation pump, exhaust manifold with fan, burners with heat exchanger. Thanks to modern technologies, it is easy to choose one that fully meets the requirements of a particular buyer.

There is also a division into categories depending on where the gas is burned. They are equipped with closed or open chambers. In closed chambers, tightness is ensured; they are isolated from the external volume in all rooms. Only through the coaxial chimney does a sufficient amount of air enter inside.

Ignition method, burner and power

In the main highways of our country, gas pressure is far from ideal.

This is especially true in winter. Sometimes it drops to a minimum of 13 mbar.

Which leads to a decrease in the flame inside.

Then, for the same reason, burnout occurs.

Although the cost increases noticeably, and the work does not happen without extraneous noise.

Gas boilers are produced not only by domestic, but also by foreign manufacturers. Such models are designed for operation at a stable nominal pressure of 18-20 mbar.

When using imported equipment, the likelihood that customers will be left without heat during severe frosts increases.

As for the type of ignition, it all depends on the owner’s desire to save on electrical energy. One of the most convenient options is the so-called piezoelectric element. This means that a small igniter is permanently installed in the burner.

Heating calculations

Such calculations are carried out when the house itself is just being designed. Among the factors that have a serious influence on the choice of heating system: walls with their thickness, roofing and roofs with structural features, the quality of thermal insulation. These indicators determine what will be:

• Plumbing and household appliances with their total quantity.
• The circuit used to move the coolant.
• What type of wiring it is.
• Slopes of highways.
• Number of radiators near the pipes.
• The boiler itself.

The selection rules remain approximately the same for all boilers, not just gas ones. Electric models are considered a more profitable purchase. In this case, you do not need to constantly press the button to turn on the device.

The main thing is to purchase a voltage stabilizer so as not to suffer from voltage surges. It is best to purchase devices with all the necessary sensors included.

Among the main functions:

• Sensor that controls traction.
• To block the gas supply if the flame goes out.
• Blockers that stop work when the gas and water supply is turned off, or power surges.
• A blocking thermostat that prevents the supply of gas when the water reaches certain temperatures.

The right boiler

Savings are unacceptable when choosing the automatic part of the burners. In case of any interruptions in gas supply, the valves should work perfectly. Otherwise, serious problems will arise in the future. Annual losses can reach 500 euros for those who purchase cheap boilers with low efficiency.

You need to take a closer look at the materials from which the boilers are made. Cast iron and copper are more durable than thin-sheet steel.

Adjustment equipment is one of the most important aspects on which you cannot skimp. How efficiently the heat regulator works depends on them.

Installing gas boilers is not as simple as it seems to many. All requirements must be met. And installation is impossible without obtaining special permission. It is best to contact specialists who provide the relevant services.

Possible leaks and open flames are the main reasons why buyers consider it dangerous to purchase gas boilers. Such warnings are only partly justified.

The costs are paid off by savings and heat supply exactly at those moments when it is truly needed. The main thing is to carefully monitor your blood pressure readings. The advantages of the devices have been appreciated by many buyers.

You can watch the video on how to choose a gas boiler:

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

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

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

Which brand of gas boiler is better?

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

1. Wolf (Germany)
2. Vaillant (Germany)
3. BAXI (Italy)
4. Protherm (Slovakia)
5. Bosch (Germany)
6. Buderus (Germany)
7. Navien (Korea)

and some others.

Among our domestic manufacturers of gas boilers, we highlight two factories:

1. Zhukovsky Machine-Building Plant (ZhMZ). Manufactures boilers of brands AOGV(single-circuit, heating) and AKGV(double-circuit, heating and hot water supply).
2. LLC "Plant Conord" Located in the city of Rostov-on-Don. It produces gas boilers and heaters CONORD, solid fuel boilers DON, industrial boilers and other equipment.

How to calculate the optimal value of the thermal power of a gas boiler?

Why buy a boiler more powerful than required if this will certainly lead to unnecessary costs not only at the time of purchase, but also during operation. On the other hand, giving away a lot of money and freezing in the winter, washing your face with cold or lukewarm water is, to put it in TV serial language, a loss of losses!

The simplest method for selecting the golden mean: 1 kW per 10 m² of serviced area. However, this is very approximate and some important parameters are not taken into account. For example, such as: the climatic coefficient of a particular region, the degree of thermal insulation of the walls, the level of probable heat loss, the volume (and not just the area) of the room, etc.

This means that a more accurate calculation is needed. There are two ways: use publicly available formulas that take into account the above criteria (you have the opportunity to remember your school years) or act more rationally and use a special calculator, which are a dime a dozen on the Internet.