Now in Russia the most common type of home heating are gas boilers. And this is not surprising, because the reason for such popularity lies in the low price of main gas in our country.
To make the right choice of a gas boiler, to choose the best option, you need to know the principles of operation, the types of this equipment and key characteristics.
Principle of operation
To generate thermal energy for the purpose heating objects for various purposes and water heating by burning gaseous fuels.
When gas is supplied to the boiler, electronic or piezo ignition is switched on. The spark ignites the igniter, which burns constantly. The main burner ignites from the igniter, heating the coolant in the boiler to temperature set on the thermostat, then the burner turns off. When the boiler begins to cool down, the temperature sensor sends a command to open the gas supply to the valve and the burner is ignited again.
Classification and basic parameters of boilers
To solve various engineering problems for space heating, various options for gas equipment were developed. Gas boilers can be classified for various reasons. Here is some of them:
By location:
- floor (installed on the floor on a special platform);
- wall-mounted (more compact, but low-power - up to 100 kW).
Ignition type:
- electronic (start automatically and save gas);
- with piezo ignition (non-volatile, switched on manually by pressing a button).
Traction type:
- with forced draft (a fan is built into the design to take air from the street and remove combustion products there; it is well suited for installation in an apartment);
- with natural draft (for this type of boiler, a special separate room is required that meets certain standards).
By function:
- single-circuit (perform only the function of heating, additional equipment is required to ensure the supply of hot water);
- double-circuit (provide the function of both heating and heating water for various needs using the equipment built into the gas boiler).
The main parameters for choosing a boiler are power and size of the room, in which the boiler will be installed. It is better to transfer the task of calculation to the designers, since this issue is very important. With the optimal calculation of power, the house will be warmed in minimum terms, heat and gas will not go to waste. If the calculations are correct, this will provide a comfortable temperature in the heated room.
Floor and wall boilers
First you need to determine which boiler is more suitable for a particular room: wall or floor.
The floor boiler is quite bulky and must be installed in a separate room. Installation must be carried out by a specialist. The heat exchanger is made of cast iron or steel, there is no fundamental difference when choosing. The floor gas boiler differs in the type of burner. There are boilers atmospheric burner- simpler, silently operating, but low-power (up to 80 kW). Boilers with ventilation burner can have a power of several thousand kW. Such boilers have high productivity, but also a high cost.
A wall-mounted gas boiler differs significantly from a floor-standing one, and not only in the way of installation. Copper is always taken as the metal for the heat exchanger. Such a boiler is much more compact, lighter and cheaper than a floor-standing one. However, its disadvantages are small performance and power.
Traction types
- Be sure to pay attention to the type of thrust of the selected boiler. into the boiler with forced draft built-in fan. Removal of combustion products and air intake occurs with its help. In this case, the heated room does not need traditional chimney, it is enough to mount a compact coaxial chimney (these are two pipes of different diameters, fixed one inside the other, through which air is supplied and carbon monoxide is removed).
- If the choice fell on a boiler with natural pull, then in the room where it will be installed, a prerequisite is the presence of a conventional chimney, and the room where the boiler is directly installed must be well ventilated.
Multifunctionality
- You also need to know if the boiler is needed only for organizing heating at the facility or if additional heating is needed. water heating function. In the first case, a single-circuit gas boiler is suitable. A double-circuit boiler will also provide hot water, but it should be noted that a low-power boiler is able to heat a small amount of water. For example, if the boiler power is 7 kW, then only 3 liters of water will heat up per minute, and for normal hot water supply, this parameter should be at around 10 liters.
- Also, boilers come with one power level, two, switching between themselves and with smooth power control between two values. More economical and more convenient an adjustable boiler will be in use.
heat exchanger
- Additionally, double-circuit boilers are also divided into boilers with a separate heat exchanger and bithermic. In the boiler with separate heat exchangers water is heated separately for radiators and for hot water supply. The advantages of this design are durability and less dependence on bad water.
- In boilers with water is heated in one container, and then distributed for supply to radiators and mixers. This type of boiler is very sensitive to low-quality water, scale quickly appears in it and performance decreases.
Errors when choosing
The main parameter when choosing a heating boiler, as mentioned above, is power. If you initially calculate it incorrectly, you may encounter many difficulties during operation. For example, if power is not enough the room will heat up for a long time and cool down faster than the set time. If, on the contrary, you buy a very powerful boiler for a small room, it will be quite hot, you will often have to ventilate the room, which can lead to a cold due to constant drafts.
If there is a problem with lack of space(for example, the boiler must be installed in the apartment) and no chimney, It would be a mistake to buy a natural draft floor standing boiler, as it requires a spacious, well-ventilated area for installation. In this case, it is better to opt for the option with wall mounting and forced draft.
When choosing in order to save a boiler with bimetric heat exchanger don't be in a hurry to buy. You need to know what quality of water will flow into the system. If the water is contaminated, then the formation of scale will lead to a decrease in productivity and, as a result, to a breakdown of the boiler. If there is hot water supply in the room, you should not buy a double-circuit boiler, in such a situation it is a waste of money.
Summing up
When choosing a gas boiler are important:
- the size of the room to be heated;
- the presence of a chimney;
- Do you need additional hot water?
It is also necessary to evaluate the possibility of separating a separate room for boiler installation. And with all the collected data, contact a specialist. The more accurate the introductory conditions are, the more optimal version of the gas boiler will be selected by the consultant.
In this video, experts give advice on choosing gas boilers:
Article last updated date: 01/11/2019
For heating private houses, it is most advantageous to use gas heating equipment. This is due to the fact that gas is still considered the cheapest type of fuel. Such equipment is safe, economical and efficient.
We present to your attention the rating of gas boilers, compiled on the basis of feedback from consumers and specialists. If you decide to install gas heating in your house, then the overview of the devices below will help you navigate the variety of gas-fired boilers.
Gas boilers are divided into two types.
convection
The most common among boilers. The principle of its operation is quite simple. Gas through the burner nozzles enters the combustion chamber, where the flame flares up. It heats the heat exchanger with water, which enters the radiators through pipes and heats the room. As soon as the water temperature has reached the required temperature, the heating stops. The products of combustion are removed through the chimney. The efficiency of such a boiler is 90%. The remaining ten literally fly out into the pipe.
If the outlet temperature is below 57 degrees, then condensation will form on the walls of the combustion chamber, heat exchanger and chimney, which can lead to breakdowns, soot formation, and also to a reduction in the life of the device.
To prevent this from happening, as well as for more efficient use of thermal energy, a new type of boiler was designed.
Condensing
The efficiency of this device reaches almost 100% due to the fact that the energy is fully used for heating and no longer “flies into the pipe”. This was achieved with the help of another heat exchanger - a water economizer. It is there that carbon monoxide vapors cool down until condensate forms, which accumulates in a separate tank. When the vapor is converted into a liquid, useful thermal energy is released, which is transferred to the coolant.
The condensing boiler is bulkier and is usually installed in a separate room. The cost of the device is twice as much as that of traditional boilers.
Popular brands
Demand creates supply, which is probably why the market for gas heating equipment is so large. The more manufacturers, the more new models appear in stores. For an inexperienced user, this is a difficult choice, especially since few people are familiar with well-known brands. Still, this is a piece goods, I bought it once and forgot for a long time.
Which manufacturer's products should be considered reliable and of high quality?
- wolf. The German company produces boilers with very high efficiency. It is not yet very well known in the CIS, but it deserves the closest attention. Even budget models are of good quality and have built-in automation to ensure the most efficient operation.
- Vaillant. Also a German manufacturer. The products of this brand occupy more than twenty-five percent among other companies in the European market, which indicates quality, reliability and popularity.
- Bosch. This brand does not need advertising, it has long been a recognized leader in the production of equipment.
- STS and Bentone. Swiss companies. They have expensive products, but very high quality.
- Ariston, Beretta, Lamborgini and Ferroli. The Italians have firmly occupied the middle price segment. Their products are good value for money.
- Dakon. The Czech manufacturer produces budget models. It uses German high-quality components, modern automation systems, as well as careful quality control.
Just do not think that Russian companies do not produce quality products. By purchasing equipment of domestic manufacturers, the user can count on low cost, reliability and durability, high performance, as well as the availability of components and good after-sales service.
- "Zhukovsky Machine-Building Plant". Produces heating equipment for over 40 years. In some boilers it uses imported automation. None of the models is independent of the mains. Efficiency - up to 92%. High degree of reliability and long service life.
- Borinsky. This plant has been dealing with boilers for more than two decades. Almost all models are equipped with high-quality foreign automation, are non-volatile, have a relatively modern design and affordable price.
- Lemax. The Taganrog plant offers gas boilers with a special coating of heat exchangers that protects against corrosion. Models are also produced with cast-iron heat exchangers, which are rightfully considered the most reliable. All equipment has high efficiency and is non-volatile.
Rating of gas boilers - an overview of the best appliances
To choose the best gas boiler for heating a private house, we recommend that you carefully read the most popular models among domestic consumers.
12th place. Oasis RT-20
| Technical specifications | |
| Number of circuits | 2 |
| Power | 20 kW |
| Heated area | 200 sq.m. |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| tank capacity | 6 liters |
| Type of fuel | Natural and liquefied gas |
| Gas pressure |
|
| Temperature in the radiator | 30 - 80 °С |
| DHW temperature | 36 - 60 °С |
| Hot water at 25 °C | 10 l/min |
| Water pressure in the DHW circuit | 8 bar |
| 3 bar | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 420x740x310 mm |
| Weight | 35 kg |
| Price | 31 600 rubles |
It is used as the main heating device in apartments and houses with autonomous heating. Also responsible for hot water supply. Copper heat exchanger has good thermal conductivity, which increases work efficiency.
With the help of the electronic panel, convenient and understandable control is carried out. The user only needs to set the required temperature.
A well-thought-out pricing policy allows you to purchase a high-quality multifunctional unit at an affordable cost.
What are users saying?
Advantages:
- electronic control;
- good power;
- completely safe;
- build quality;
- compact size, does not interfere;
- modern design.
Flaws:
- few functions;
- there is no clear instruction for setting up hot water, you have to experiment by typing;
- too small expansion tank;
- turbine noise.
Gas boiler Oasis RT-20 20 kW double-circuit
11th place. Protherm Bear 30 PLO
| Technical specifications | |
| Number of circuits | 1 |
| Power | 18.20 - 26 kW, two steps |
| Combustion method | open |
| Performance | 90 % |
| Control | electronics |
| Mounting | floor |
| Radiator | Cast iron, two-way, 4 sections |
| Fuel consumption |
|
| Gas pressure |
|
| Maximum coolant temperature | 90 °С |
| water pressure | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 420x880x600 mm |
| Weight | 110 kg |
| Price | 48 540 rubles |
Excellent floor gas boiler for private homes. It works to provide heating, and complete with a boiler - for hot water supply. It is ignited using a piezoelectric element.
Combustion products are discharged naturally, in the presence of a chimney, or forcedly using a turbo attachment.
You can adjust the power by switching steps on the control panel.
What are users saying?
Advantages:
- heats a 3-storey house without problems (radiators and underfloor heating);
- easy to manage;
- you can connect the boiler;
- power adjustment;
- cast iron heat exchanger.
Flaws:
- the turbocharger is very noisy;
- the boiler rots in 5-7 years. Replacement is too expensive.
10th place. Baxi NUVOLA-3 Comfort
| Technical specifications | |
| Number of circuits | 2 |
| Power | 10.40 - 24.40 kW |
| Performance | 92.2 % |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| Boiler | 60 liters |
| tank capacity | 7.5 liters |
| Fuel consumption |
|
| Gas pressure |
|
| Temperature in the radiator | 30 - 85 °С |
| DHW temperature | 5 - 60 °С |
| 14 l/min (9.4 l/min) | |
| Water pressure in the DHW circuit | 6 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 600x950x466mm |
| Weight | 70 kg |
| Price | 81 900 rubles |
This is a real mini-boiler room, which includes not only a boiler for heating the house, but also a boiler that constantly maintains the desired DHW temperature. Thanks to this, you will not have problems with adjusting the water from the tap.
Using a room thermostat, the boiler automatically regulates heating depending on the weather outside. The coaxial chimney is not subject to freezing.
This is an ideal solution for those who need comfortable hot water supply and stable high-quality space heating.
What are users saying?
Advantages:
- reliable and stable operation;
- there is always hot water in the shower;
- high level of quality;
- you can connect "warm floors".
Flaws:
- complex remote control. It took a long time to deal with the remote control;
- Would like more hot water
- expensive pleasure;
- weak pneumatic relay.
Gas boiler BAXI NUVOLA-3 Comfort 240 Fi 24.4 kW double-circuit
9th place. MORA-TOP Meteor Plus PK24KT
| Technical specifications | |
| Number of circuits | 2 |
| Power | 8.90 - 23 kW |
| Performance | 90 % |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| tank capacity | 6 liters |
| Fuel consumption | 2.67 cu. m/hour |
| Gas pressure | 13 - 20 mbar |
| Temperature in the radiator | 30 - 80 °С |
| DHW temperature | 30 - 60 °С |
| Hot water at 25°C (35°C) | 13.1 l/min (9.4 l/min) |
| Water pressure in the DHW circuit | 6 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 400x750x380mm |
| Weight | 33.5 kg |
| Price | 41 500 rubles |
The reliable and safe copper works absolutely silently. Does not leak and does not break for years. Despite its small size, it perfectly copes with its task - heating the house and providing hot water.
Easy to connect, has a simple and clear control. Multi-layered protection provides security.
What are users saying?
Advantages:
- economical, low gas consumption;
- wall-mounted, does not take up much space;
- there is always hot water;
- power saving mode.
Flaws:
- not cheap;
- after turning off the gas, the boiler is turned on manually.
Gas boiler MORA-TOP Meteor Plus PK24KT 23 kW double-circuit
8th place. Oasis BM-18
| Technical specifications | |
| Number of circuits | Dual circuit, bithermic |
| Power | 18 kW |
| Heated area | 180 sq.m. |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| tank capacity | 6 liters |
| Gas pressure |
|
| Temperature in the radiator | 30 - 80 °С |
| DHW temperature | 36 - 60 °С |
| Hot water at 25 °C | 10 l/min |
| Water pressure in the DHW circuit | 8 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 420x740x310 mm |
| Weight | 34.8 kg |
| Price | 28 400 rubles |
The boiler has a bithermic heat exchanger, that is, one circuit is built into another. It is convenient, reliable and more economical than traditional models. But for efficient operation, it is necessary to monitor the quality of the water, as scale and lime deposits can lead to breakage.
Good performance and a copper heat exchanger allow you to quickly heat the house, as well as provide its inhabitants with hot water. Energy costs are minimal.
Warranty - 2 years.
What are users saying?
Advantages:
- nice appearance, does not look like a monster;
- convenient and clear control panel;
- heats up water quickly
- safe.
Flaws:
- no remote control;
- battery ignition.
Gas boiler Oasis BM-18 18 kW double-circuit
7th place. Lemax Premium-20
| Technical specifications | |
| Number of circuits | 1 |
| Power | 20 kW |
| Heated area | 200 sq.m. |
| Combustion method | open |
| Performance | 90 % |
| Control | Mechanics |
| Mounting | floor |
| Radiator | steel |
| Fuel consumption | 2.4 cu. m/hour |
| Gas pressure | 13 mbar |
| Temperature in the radiator | 90 °С |
| water pressure | 2 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 470x961x556 mm |
| Weight | 78 kg |
| Price | 22 780 rubles |
The body of the boiler is made of high-quality two-millimetric steel and meets all the necessary standards. The heat exchanger is cylindrical, which ensures stable operation at pressures up to three atmospheres.
The unit does not depend on electricity, is equipped with multi-level protection. The top panel is easily removed, the boiler is convenient to clean.
Product warranty - 3 years.
What are users saying?
Advantages:
- inexpensive for such power;
- simple;
- easy to clean;
- gas consumption is small;
- works silently;
- even in the most severe frosts the house is warm;
- Italian automation;
- safe to operate.
Flaws:
- strains the steel heat exchanger, let's see how long it lasts;
- heavy and bulky, he needs a separate room;
- makes noise;
- unfinished automation.
Gas boiler Lemax Premium-20 20 kW single-circuit
6th place. Baxi LUNA-3 COMFORT 310Fi
| Technical specifications | |
| Number of circuits | 2 |
| Power | 10.40 - 31 kW |
| Efficiency (COP) | 93.1 % |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| tank capacity | 10 liters |
| Fuel consumption |
|
| Gas pressure |
|
| Temperature in the radiator | 30 - 85 °С |
| DHW temperature | 35 - 65 °С |
| Hot water at 25°C (35°C) | 17.8 l/min (12.7 l/min) |
| Water pressure in the DHW circuit | 8 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 450x763x345mm |
| Weight | 40 kg |
| Price | 60 680 rubles |
A modern double-circuit unit is designed to continuously supply the house with heating and hot water. It is equipped with a removable digital panel, which also functions as a temperature sensor.
The boiler pleases with high efficiency - over 93%, which indicates not only efficient operation, but also efficiency. A nice feature is the ability to work in a wide pressure range, which is especially important for our country, where all kinds of drops often occur.
What are users saying?
Advantages:
- good performance;
- Italian assembly;
- reliable model;
- spare parts are always in the store;
- instant heating of the coolant;
- powerful pump.
Flaws:
- the backlight of the display falls into "sleep mode", it is inconvenient;
- no hot water circulation;
- the pressure sensor is inconveniently located;
- weak point - fan and pneumatic relay;
- nozzles for liquefied gas must be purchased separately.
Gas boiler BAXI LUNA-3 COMFORT 310 Fi 31 kW double-circuit
5th place. Lemax Premium-12.5
| Technical specifications | |
| Number of circuits | 1 |
| Power | 12.50 kW |
| Heated area | 125 sq.m. |
| Combustion method | open |
| Performance | 90 % |
| Control | Mechanics |
| Mounting | floor |
| Radiator | steel |
| Fuel consumption | 0.75 cu. m/hour |
| Gas pressure | 13 mbar |
| Temperature in the radiator | 90 °С |
| water pressure | 3 bvr |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 491x744x416 mm |
| Weight | 55 kg |
| Price | 18 115 rubles |
The domestic manufacturer is literally ousting the famous brands from the market. Excellent quality and complete lack of flaws. With proper installation and operation, this floor-standing boiler works efficiently and significantly reduces gas costs.
What are users saying?
Advantages:
- does not depend on electricity;
- powerful enough;
- economical;
- high performance;
- easy to manage;
- easy to connect to the heating system;
- Italian automation.
Flaws:
- not found.
Gas boiler Lemax Premium-12.5 12.5 kW single-circuit
4th place. Oasis BM-20
| Technical specifications | |
| Number of circuits | Dual circuit, bithermic |
| Power | 20 kW |
| Heated area | 200 sq.m. |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| tank capacity | 6 liters |
| Gas pressure |
|
| Temperature in the radiator | 30 - 80 °С |
| DHW temperature | 36 - 60 °С |
| Hot water at 25 °C | 10 l/min |
| Water pressure in the DHW circuit | 8 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 420x740x310 mm |
| Weight | 34.8 kg |
| Price | 28 700 rubles |
The wall-mounted boiler has forced water circulation, which ensures uniform heating. Safe to work and easy to use. The boiler can be hung on the wall in any room - kitchen, attic, basement.
The positive aspects are that the chimney designed during construction is not required, so the unit can be used in apartments with autonomous heating.
The model is equipped with a bithermic copper heat exchanger with high performance, which simplifies the design and ensures greater reliability. Excess condensate is discharged into a special container.
The service life is at least 12 years.
What are users saying?
Advantages:
- decent inexpensive unit;
- the quality of work is excellent;
- good design and cost;
- works quietly.
Flaws:
- a water filter is required;
- boiling water flows immediately;
- the ignition is powered by batteries, you often have to change them;
- low-quality automation;
- disposable dubious product.
Gas boiler Oasis BM-20 20 kW double-circuit
3rd place. Bosch Gaz 6000W WBN 6000- 12C
| Technical specifications | |
| Number of circuits | 2 |
| Power | 5.4 - 12 kW |
| Combustion method | closed |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| tank capacity | 8 liters |
| Fuel consumption |
|
| Gas pressure | Natural - 10.50 - 16 mbar Liquefied - 35 mbar |
| Temperature in the radiator | 40 - 82 °С |
| DHW temperature | 35 - 60 °С |
| Hot water at 25°C (35°C) | 8.6 l/min (5.1 l/min) |
| Water pressure in the DHW circuit | 10 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 400x700x299 mm |
| Weight | 28 kg |
| Price | 33 700 rubles |
A wall-mounted gas boiler is able to provide a high level of thermal comfort and the constant availability of hot water. It has a pleasant appearance, is hung on the wall and does not occupy a usable area. On the front panel there are control buttons and instructions for the user.
It is calculated on heating of the area not less than 120 square meters. Unpretentious to changes in pressure and voltage. The primary heat exchanger is made of copper, which improves thermal conductivity. Hot water is heated by a plate heat exchanger.
With low gas consumption, it has high performance.
What are users saying?
Advantages:
- compact;
- fit well into the interior;
- silent;
- economical;
- many precise settings;
- You can set it up yourself using the Internet.
Flaws:
- Chinese assembly, solid marriage, designed for a year of work;
- dependence on electricity;
- too much plastic;
- parts are hard to find.
Gas boiler Bosch Gaz 6000 W WBN 6000-12 C 12 kW double-circuit
2nd place. Baxi ECO Four 24 F
| Technical specifications | |
| Number of circuits | 2 |
| Power | 9.30 - 24 kW |
| Combustion method | closed |
| Performance | 92.9 % |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| tank capacity | 6 liters |
| Fuel consumption |
|
| Gas pressure | Natural - 13 - 20 mbar. Liquefied - 37 mbar. |
| Temperature in the radiator | 30 - 85 °С |
| DHW temperature | 35 - 60 °С |
| Hot water at 25°C (35°C) | 13.7 l/min (9.8 l/min) |
| Water pressure in the DHW circuit | 8 bar |
| Water pressure in the heating circuit | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 400x730x299 mm |
| Weight | 33 kg |
| Price | 40 600 rubles |
The Italian-assembled boiler is designed for heating and hot water supply, including in the summer. The range of features is beyond praise. Can be connected to the "warm floor" system.
The combustion chamber is turbocharged. There are seven levels of protection. Heating area - at least 180 square meters.
What are users saying?
Advantages:
- reliable and unpretentious;
- easily converted to liquefied gas by replacing the nozzle;
- average price category;
- fully adapted to Russian conditions;
- summer/winter mode.
Flaws:
- expensive;
- spare parts and components are not cheap;
- noisy;
- poor quality buttons on the control panel;
- sensitive to voltage drops;
- capricious electronics, a year later the control panel failed;
- volatile.
Gas boiler BAXI ECO Four 24 F 24 kW double-circuit
1st place. Vaillant turboTEC plus VU
| Technical specifications | |
| Number of circuits | 1 |
| Power | 8 - 24 kW |
| Combustion method | closed |
| Performance | 91 % |
| Control | electronics |
| Mounting | wall |
| Radiator | copper |
| tank capacity | 10 liters |
| Fuel consumption |
|
| Gas pressure |
|
| Water temperature in the radiator | 30-85 °С |
| water pressure | 3 bar |
| additional characteristics | |
| Sensors and Capabilities |
|
| Protective functions |
|
| Dimensions | 440x800x338 mm |
| Weight | 41 kg |
| Price | 60 000 rubles |
Despite its size, the boiler practically does not take up space, as it hangs on the wall. It is designed for space heating, as well as for water heating.
A feature of this model is a "hot start" - when you open a hot water tap, you do not need to wait until the heating starts, warm water will run immediately.
What are users saying?
Advantages:
- German assembly;
- the boiler is powerful, but economical in terms of gas consumption;
- copper heat exchanger evenly distributes heat;
- quality materials inside and out;
- digital control with LCD screen;
- multi-speed pump.
Flaws:
- turns off during power surges, a stabilizer is required;
- high price;
- began to buzz when the water was heated;
- depends on electricity.
Gas boiler Vaillant turboTEC plus VU 242/5-5 24 kW single-circuit
What features to look out for
In order to correctly and competently choose a gas boiler, carefully consider the following criteria.
- Power. The most important parameter. It completely depends on the area of the heated premises and the specific coefficient for the region of residence. For example, if you live in the middle lane, then the value of the coefficient for every 10 m² is 1-1.2 kW, in the south - 0.7-0.9 kW, in the north - 2 kV. To calculate the power of a boiler for a house of 300 m² in a temperate climate, you need to carry out the following calculations: 300 * 1/10 \u003d 30 kW.
- Mounting method. Boilers are wall and floor. The first ones are compact, do not take up much space, are silent and affordable. The second ones are more powerful, bulky, and often require a separate room for their installation.
- The number of contours. Single-circuit devices are designed only for heating, double-circuit devices also provide hot water supply.
- Safety. It is desirable that the boiler be able to automatically turn off in all abnormal and emergency situations.
Important factors when choosing a device are the consumption of gas and electricity, efficiency, the availability of programmable conditions for night and day heating, price.
- Be responsible for calculating power. If it is not enough, then the room will heat up for a long time and cool quickly. A powerful boiler, on the contrary, will lead to overheating - this is an unprofitable use of resources.
- If there is no separate, well-ventilated room and chimney, then a natural draft floor boiler will not suit you. It is better to opt for wall-mounted boilers with forced draft.
- Do you already have hot water? Then you should not spend money on a double-circuit boiler.
- A biometric heat exchanger requires high-quality water without impurities. So if you do not have a water filter built into the water supply system, then you will not save on such a boiler, because scale in the heat exchanger is guaranteed to lead to a breakdown.
Conclusion
As you can see, the choice of a boiler should be treated responsibly and with knowledge of the nuances. It is better not to rely on chance, but to turn to professional gas workers. They will help to correctly calculate the power and advise which boilers are suitable for heating your premises.
For heating a private house, gas is most often used; this fuel is beneficial for residents of Russia. Since heat generators are expensive, you need to know how to choose them correctly. The review describes the best floor-standing gas boilers, taking into account price and technical characteristics. The rating will help compare the pros and cons of devices, on the basis of which it will be easier to buy good equipment.
Floor gas boiler which company is better to choose
In the consumer market, you can find domestic and foreign models from different manufacturers. Russian firms make simple floor-standing gas boilers for the home. Products from foreign suppliers are convenient, but the price is higher. The review considers the products of the following companies:
- Lemax The products of this company are in great demand due to their quality. The production uses modern Italian and German equipment.
- Protherm– equipment is assembled at factories in Slovakia and Turkey. The first boilers of this company were brought to Russia in 1996.
- Siberia- the brand represents a line of devices with different characteristics. The boilers are made using basalt fiber, which is used to insulate spacecraft.
- Borinsky– the company supplies heating equipment to the regions of Russia and neighboring countries. The assortment includes more than 30 models of gas equipment for home heating.
- Baxi- today the Italian brand is owned by the BDR Thermea Group corporation. The company manufactures non-standard heating and hot water systems. The quality of products is confirmed by certificates.
- Ferroli- the Italian company since 1955 produces heating and climate equipment. Products are delivered to dozens of European countries. The boilers of this company are durable, reliable and safe.
- Viessmann– a large international concern supplies equipment for space heating and cooling. The main priority is the technological development of the industry and concern for the environment. Products are delivered to 74 countries of the world.
- Buderus- a European manufacturer of heating equipment began to produce the first boilers in 1731. The trademark belongs to Bosch Thermotechnik GmbH. German technology is reliable and efficient.
- Alpenhoff- a German company produces heating equipment. Production and research centers are located in Germany and Slovakia. The goods of this company are imported to 30 countries of the world.
- Atem- The first equipment of this company was released in 1988. Since then, the brand's products have become popular in Ukraine and other countries. Heating appliances are included in the IQenergy energy saving program.
- Termomax- Ukrainian company produces more than 100 thousand products for space heating every year. Simple equipment is in demand among Russian buyers.
- Navien- The Korean brand has been providing comfort and coziness for 40 years, producing high-quality heating equipment. The main goal of the company is to create favorable conditions for the environment. Products are delivered to 35 countries of the world.
Brands have a long history, good reputation and worldwide fame. Domestic producers are valued no less than foreign ones. In addition, the delivery of Russian goods is cheaper.
Rating of floor gas boilers
If you need to heat a room with an area of \u200b\u200bno more than 900 square meters, install a floor heat source. The TOP of the best includes the most reliable and energy-intensive models. Before buying, you need to study the characteristics of floor gas boilers. It is important to pay attention to the following parameters:
- Functionality. If a double-circuit boiler provides heating and water heating, then a single-circuit boiler can only heat.
- Control method. The electronic model works autonomously and does not require adjustments, while the mechanical one is easily repaired.
- Efficiency. Modern condensing boilers are highly efficient, while convection boilers lose a lot of heat.
- Power. The ability to heat the declared area of houses.
- Ignition type. The electronic type ignites the fuel system automatically, and the piezoelectric element with the help of a person.
- Burner type. The modulated element saves fuel, while the single stage is durable and quiet.
- Material. The heat exchanger is made of copper, cast iron and stainless steel. The weight and power of the model depends on this.
- The combustion chamber. Compared to an open chamber, a closed chamber requires the installation of a coaxial chimney for air intake.
- Method of output of processed products. For the removal of substances, a natural way or forced draft is used.
Good boilers are sold in specialized stores, on the Internet, in markets. But you should not buy cheap equipment, it is better to buy a model with full functions. This option will be convenient for use in everyday life.
The best floor single-circuit gas boilers
Floor single-circuit gas boilers can only heat. If hot water is needed, an additional flow boiler is installed. The design has one compact heat exchanger, the size of which depends on the power. Such equipment warms up residential buildings and industrial facilities. The list of the best includes the most popular boilers.
Lemax floor gas boilers use natural or forced water circulation. The combustion chamber is made of high quality steel, which guarantees a long service life of the product. Heat-insulating enamel with an inhibitory composition against corrosion is applied to the heat exchanger. The top panel can be easily removed for cleaning the boiler. To increase the efficiency, manufacturers have changed the design of the turbulator and increased the heat exchange area.
Advantages:
- Simple control;
- Low price;
- Easy to clean;
- Economical fuel consumption;
- Silent operation;
- High power.
Flaws:
- Gas pressure adjustment required;
- Poor build quality;
- Expensive repair.
The air in the living room is heated to the desired temperature within two hours. To prevent heat from escaping and save gas, it is recommended to insulate the walls. The boiler is equipped with overheating protection, but sometimes the system does not work.
Gas floor boiler Protherm Volk 16 kW is made of steel. The device does not depend on electricity, as it works without being connected to the mains.
The model is suitable for cottages, country and residential buildings, industrial premises.
The boiler is ignited by a piezoelectric element, which is convenient for many. The operation of the device can be monitored, as the pressure and temperature indicators are clearly displayed. This technique is chosen for its simple and reliable design. It automatically maintains the set temperature, above which the device turns off.
Advantages:
- Silent operation;
- Stylish design;
- Economical gas consumption;
- Simple control;
- Affordable price.
Flaws:
- Placement and installation requires a specialist;
- There are no additional features;
- No automatic ignition.
If you need inexpensive, simple and reliable equipment, then this model is suitable. In the event of a breakdown, spare parts can be easily purchased at any service center.
Floor gas heaters are designed for domestic water heating. The structure is made of basalt fiber, which provides good thermal insulation. The steel case is covered with powder enamel. The device is suitable for forced and natural circulation of water. The boiler is ignited with an electric piezoelectric element. The combination valve does not require adjustment, the level of flame and draft is controlled by a sensor. Due to its high power, the device is able to heat private houses and two-story buildings.
Advantages:
- Compact size;
- Not dependent on electricity;
- Italian spare parts are used;
- Modern design;
- Saves fuel;
- Simple control.
Flaws:
- Noisy;
- There are no condensation elements;
- The installation of a chimney is required.
Some users complain that the piezo ignition does not work the first time. When you first start the device, condensation may appear, which disappears after the room warms up.
Such a boiler with piezo ignition does not depend on electricity. This is very important for remote areas where power outages are possible. The manufacturer provides a three-year warranty for its product. If necessary, the device can be converted to liquefied gas. The domestic model is similar to the Zhukovsky boilers, which can be replaced without alteration. It can heat residential buildings up to 90 square meters. The design has an atmospheric gas burner. If the flame goes out, the gas pressure rises or the chimney fails, the security system is triggered.
Advantages:
- Compact dimensions;
- Not dependent on electricity;
- Replaces Zhukovsky boilers;
- Italian automation;
- Presence of a safety device;
- High efficiency.
Flaws:
- The thrust sensor may fail;
- Noisy at startup
- There are no additional features.
Floor standing gas boilers Baxi Slim have a modern design and compact size. Due to the small width of 35 cm, the device fits into the interior without any problems. An electronic system is used for ignition. If necessary, it is possible to switch to liquefied gas. The equipment works without problems in Russian climate conditions. The preset temperature in the boiler is maintained automatically. In case of overheating, protection is triggered and the boiler turns off. Another model with an open combustion chamber is protected from freezing.
Advantages:
- Electronic ignition;
- The heat exchanger is made of cast iron;
- High efficiency of 90.2 percent;
- The presence of a display;
- Low fuel consumption;
- Protected from overheating and freezing.
Flaws:
- Great weight;
- High price.
The single-phase model provides for the connection of a warm floor. Also, when installing an additional boiler, the device is used to supply hot water. The kit includes a pump and an expansion tank.
The Italian apparatus is capable of heating residential and industrial premises up to 320 square meters. The steel body is coated with white epoxy powder for thermal insulation. The model is equipped with an external sensor, a digital display that displays the operating temperature and pressure. The boiler with automatic ignition has a flame and pressure control system. This is a reliable, durable and simple device that is easy to install. If necessary, you can connect an external storage boiler. Liquefied gas is used for heating, it is also possible to install a special set of equipment and use natural gas.
Advantages:
- The presence of a self-diagnosis function;
- Weighs little;
- Simple control;
- Weather-dependent automation is installed;
- Digital control panel;
- Automatic ignition.
Flaws:
- Expensive;
- There is no circulation pump;
- There is no expansion tank.
This is an expensive model with convenient features. In order for the boiler to serve for a long time, it is necessary to undergo an annual service. Install the equipment in a room with natural ventilation.
This durable economic model of the compact sizes, its power makes 29 kW. The steel burner emits a minimum amount of harmful substances. The cast-iron surface retains the body well, and a special coating helps not to get burned.
Weather-dependent automation allows you to significantly save on fuel consumption. A boiler with an open combustion chamber fires up automatically and without noise. Due to the small size and weight, the boiler is easily transported and mounted. In the event of a failure in the fuel supply, the built-in relay automatically turns on the boiler.
Advantages:
- Compact dimensions;
- Weighs little;
- The presence of weather-dependent automation;
- Economical gas consumption;
- Simple control;
- Reliable construction.
Flaws:
- High price;
- Need help with setup.
The model from the German manufacturer is supplied as an assembled structure or as separate cast parts. The equipment meets the highest environmental requirements. Capacitive drives are easy to combine.
The cast iron gas boiler uses natural and liquefied gas for heating. The design allows you to install water-heating tanks with a capacity of 135, 160 and 200 liters. Since the fan is not used, the device operates silently. The maximum thermal power is 32 kW.
The system is easy to set up and use, the burner can be easily reconfigured to another type of gas. The equipment automatically turns on with the help of electric ignition. Due to the thick thermal insulation layer, heat loss is minimal. The design is fully assembled, which facilitates installation. The kit includes a heating boiler, a control system and reconfiguration to liquefied gas.
Advantages:
- Compact dimensions;
- Light weight;
- Universal design;
- Automatic ignition;
- Electronic control;
- Easy changeover to another fuel.
Flaws:
- High price;
- Requires permission to install and run.
The room where the boiler is located must be well ventilated. Any water heater is suitable for organizing hot water supply. But it is ideal to use a tank from the Logalux SU series.
A single-circuit gas boiler does not depend on electricity; piezo ignition is used to start it. The model has a low noise level. It allows you to heat the living space at any temperature. The body is made in a stylish European design.
If you install additional equipment, the boiler can heat using liquefied gas. The steel heat exchanger does not depend on sudden changes in temperature. Burners evenly distribute heat throughout the area. Due to the presence of a thrust stabilizer and gas pressure, complete safety is guaranteed.
Advantages:
- Does not make noise during operation;
- Looks stylish;
- Runs without electricity;
- Safe system;
- Liquefied gas can be used;
- Spare parts made in Italy.
Flaws:
- Many stores are overpriced;
- Expensive installation.
To buy the original model, you should contact the official store of the supplier. The manufacturer offers eleven different models of this series. They differ in size, weight, power and fuel consumption.
The best floor double-circuit gas boilers
This type of boilers provide not only heat, but also hot water. The design has two heat exchangers united by a common housing. Through a common inlet, heat is distributed to two separate circuits. But such an installation is usually large. Among the many boilers, 5 models were selected.
Floor installation heats apartments, private cottages, administrative and commercial premises. The heat from the boiler can spread over an area of up to 300 square meters. This device works without electricity, the degree of combustion is regulated by mechanical automation.
Manufacturers have provided protection against flame extinction and overheating. The coolant is heated to a maximum of +90 degrees. You can control the temperature with a thermometer. Thanks to the anti-corrosion coating, the device will last a long time.
Advantages:
- Powerful device;
- Large heating area;
- Reliable boiler;
- Uses inexpensive fuel;
- Economical gas consumption;
- Increased security system.
Flaws:
- Noisy during operation;
- Dear model.
Since the boiler is made in Russia, it is not difficult to find inexpensive spare parts for it. Natural and liquefied gas is used for heating. Turbulators provided in the design allow to enhance heat transfer.
The model attracts with its modern design, the case is covered with pleasant white enamel. Due to the dividers, the efficiency during fuel combustion is significantly increased. The design is equipped with high-quality burners from the Italian company Polidoro. They evenly distribute the flame and quickly heat the water.
Security automation is also provided by Italian manufacturers. Due to the effective insulation with fibers, the percentage of heat loss is minimal. This guarantees the reliability and durability of the product. The model can have a rear and top chimney outlet.
Advantages:
- Affordable price;
- Spare parts made in Italy;
- High-quality security system;
- Heats up large areas
- Low fuel consumption;
- The presence of an anti-soot system.
Flaws:
- Not the lowest gas consumption;
- A lesser degree of protection than in prestigious models.
The desktop double-circuit boiler heats rooms with a chimney up to 280 square meters. The thermal power of such models is from 10 to 40 kW.
The maximum temperature at the exit of combustion products reaches 120 degrees.
The device provides heat to residential premises and buildings equipped with a water heating system. Additionally, the boiler is able to heat water for household needs. Natural gas is used to operate the device, which helps to save on fuel. If necessary, you can switch to liquefied gas.
The technique in appearance resembles a heating boiler, but has a simple design. The device, independent of electricity, has an atmospheric gas burner made in Italy. If the flame goes out, the gas pressure rises or the chimney fails, the security system is triggered. Piezo ignition is used to start the flame.
Advantages:
- Can be used without electricity;
- Compact dimensions;
- Strict modern design;
- High efficiency of 87 percent;
- Economical fuel consumption;
- Simple control.
Flaws:
- A specialist visit is required for adjustment;
- There are no additional features.
The boiler heats an area up to 90 square meters. The manufacturer provides a three-year warranty on its product. Due to the low weight, the device is easy to mount.
The boiler heats and provides hot water to private houses, apartments, commercial premises up to 120 square meters. Since the device has a low hydraulic resistance, the installation of a pump is not required. The design provides for the presence of a chimney through which combustion products exit.
The steel boiler is covered with powder enamel, which allows you to use the device safely. The heating temperature is adjustable from 50 to 90 degrees. Electricity is not used, which is considered a big plus. The EUROSIT automation helps to save fuel, which regulates the gas supply depending on external conditions.
Advantages:
- Simple construction;
- Saving gas;
- Not dependent on electricity;
- High efficiency of 90 percent;
- Availability of gas control;
- Overheat protection.
Flaws:
- There is no automatic ignition;
- No flame modulation.
This is a simple design without additional modern features. The boiler does not provide for the connection of a warm floor. There is also no display, heating indicator and remote control.
If you need a double-circuit floor gas boiler with a beautiful design, you should buy this model. The device heats a residential area up to 350 square meters. Two separate heat exchangers are provided here, this is considered a big plus if hard water is used.
If necessary, the boiler can be converted to liquefied gas by purchasing a set of jets. The control board is powered by 220 V. The small size and light weight make it easy to transport the device. The microprocessor protects against sudden voltage drops and extends the life of the product.
Advantages:
- Low cost;
- Stylish design;
- Compact and lightweight design;
- There is frost protection;
- Location of connecting pipes on both sides;
- The system of removal of a smoke is thought over.
Flaws:
- Rotting quickly;
- The temperature sensor often fails;
- The boiler is leaking.
Which outdoor gas boiler is better to buy
Floor boilers are able to work autonomously and regardless of the availability of electricity. If you choose a model with a cast iron heat exchanger, it will last more than thirty years. Powerful equipment heats a large area without problems, but its price is much higher.
Mechanical models are easily repaired in the event of a breakdown, while electronic models provide comfort in operation. When choosing the best floor standing gas boilers, it is recommended to opt for the following models:
- Of the single-circuit devices, Baxi Slim230 iN is most often chosen. The equipment has a modern design, compact dimensions and the highest efficiency.
- The most popular boiler with a water tank is the Buderus Logano G124 WS-32.
- Lemax Premium-30B is considered the most reliable double-circuit boiler. It heats a large area using fuel economically.
Home heating systems using gas boilers as a heat source are becoming common and widespread.
Often, homeowners refuse the services of centralized networks in favor of autonomous systems.
They prefer to independently regulate the heating mode and the timing of the start or end of the heating season.
The set of functions of modern gas boilers is much wider than before, new features and additions have appeared.
Consider a group of double-circuit boilers, the most popular gas units.
Double-circuit boilers have two basic functions:
- House heating.
- Hot water supply for domestic needs.
All other features are considered additional, contributing to a more successful and efficient implementation of the main tasks. A feature of this type of boilers is the need to work throughout the year.
Single-circuit structures are stopped for the summer, which allows you to increase the resource of components and parts. Double-circuit units have to be operated in a constant mode, turning off only the supply of coolant to the heating system.
This increases the load on the parts and components of the unit, reduces the resource of the most loaded sections of the boiler.
As a rule, for such designs, the power level is limited to 40-50 kW; more productive units are already equipped with built-in storage or external boilers.
In terms of design, dual-circuit models are the basic version with an added secondary heat exchanger. However, there are other types of boilers that can demonstrate more stable and high performance.
These include:
- Designs with a combined heat exchanger. They provide more stable DHW heating, high performance and fast response to requests.
- condensation models. These are boilers with the function of preheating the coolant using thermal energy from the condensation of water vapor from flue gases. Manufacturers claim for them an efficiency equal to 107-109%, which from the point of view of physics is completely absurd. At the same time, condensing units are able to work only with low-temperature systems. Under normal conditions, they lose additional features and function as convection structures.
NOTE!
When choosing a boiler, you should make sure that its design can fully work in the proposed conditions. Otherwise, expensive equipment will be used only partially, which is unacceptable.
Kinds
Double-circuit gas boilers are distinguished according to certain characteristics.
According to the installation method:
- wall. Hanging mounting requires strong load-bearing walls. The dimensions and weight of such units are limited by the conditions of the permissible load.
- floor standing. They can be installed directly on the floor, which expands the capabilities of the boilers and allows them to be equipped with massive units of increased power and productivity.
Type of heat transfer:
- Convection. The heat carrier is heated by a gas burner.
- Condensing. A two-stage heating scheme is used, where the first stage is the return flow heating in the condensation chamber, and the second stage is the usual preparation process in the primary heat exchanger. For the proper course of the process, it is necessary to provide appropriate conditions, which is possible only in the southern regions.
Type of heat exchanger:
- Separated. The heat carrier is heated by the primary unit, and the secondary heat exchanger (usually plate type) is responsible for the preparation of hot water.
- Combined (bithermic). It is a coil from a pipe of a specific section, where two streams can flow simultaneously without mixing. Allows you to increase the productivity of hot water, but is difficult to clean from lime deposits.
Type of combustion chamber:
- Atmospheric (open). The traditional way of operating the boiler, where the smoke is removed naturally through a standard chimney, and the air is taken directly from the room.
- Turbocharged (closed). Air is taken from the outside using a coaxial chimney (pipe-in-pipe design). The supply of fresh air is provided by the turbo blower. It also displaces flue gases, providing a stable and adjustable smoke removal mode.
Turbocharged models are much more efficient and stable in operation, they are optimally suited for residential use.
What parameters should I pay attention to when buying
When choosing a suitable model of a gas double-circuit boiler, you should pay attention to the main technical parameters of the units:
Combustion chamber type
The most popular are boilers with a closed combustion chamber. The entire process of fuel combustion and smoke removal takes place in a system isolated from the atmosphere of the room, which increases safety for people.
In addition, a controlled smoke extraction process is much more efficient than unstable natural draft.
Power
The power level of the boiler is the main indicator that demonstrates the ability of the unit to provide thermal energy to rooms of different sizes.
Usually, the desired model is selected at the rate of 1 kW of power per 10 m2 of area.
It should be noted that a large margin should not be made, since the operating mode of the boiler should be close to the nominal one.
Heat exchanger material
For the manufacture of heat exchangers are used:
- stainless steel. This is the most affordable option, which is used in boilers of the medium and budget price range. The heat transfer and service life of such units are quite high, there is a possibility of repair or restoration.
- Copper. Heat exchangers of this type are installed in the most expensive and productive series of gas boilers. The indicators of copper heat exchangers are considered the highest.
- Cast iron. As a rule, it is used in powerful outdoor units. The heating mode is stabilized due to the large thermal inertia of the material.
Boiler type
There are two types:
- convection. The usual design of the gas unit.
- Condensing. In addition to the traditional method, these models are equipped with a coolant preheating function, which reduces fuel consumption and the load on the heat exchanger.
When choosing the type of boiler, it must be taken into account that the operation of condensing devices is possible only if the difference between the external and internal temperatures is not more than 21 °, which in Russia is impossible to ensure due to climatic conditions.
Energy independence
There are volatile and independent installations. The first ones have the maximum set of functions, but in case of a sudden power outage they become useless.
The latter do not use electricity, which expands the geography of their use. At the same time, non-volatile models have minimal capabilities and a complex ignition method.
TOP-10 rating
Consider the most popular models of double-circuit gas boilers, recognized by experts and ordinary users as the most successful in terms of design and operation:
Buderus Logamax U072-24K
Gas double-circuit boiler designed for wall mounting. Equipped with a closed-type combustion chamber and a separate heat exchanger - primary copper, secondary - stainless.
Heating area - 200-240 m2. It has several levels of protection.
Models with the index "K" perform heating of hot water in flow mode. It is possible to connect a room temperature controller.
Federica Bugatti 24 Turbo
Representative of Italian heat engineering, wall-mounted double-circuit gas boiler. Designed to work in a cottage or public space up to 240 m2.
Separate heat exchanger - copper primary and steel secondary. The manufacturer gives a 5-year warranty period, which indicates confidence in the quality and operational capabilities of the boiler.
Bosch Gaz 6000 W WBN 6000-24 C
The German company Bosch is known all over the world, so it does not need additional introductions. The Gaz 6000 W series is represented by wall-mounted models designed for operation in private homes.
The 24 kW model is the most common, it is optimal for most residential and public buildings.
There is a multi-stage protection, the copper primary heat exchanger is designed for 15 years of service.
Leberg Flamme 24 ASD
Leberg boilers are usually referred to as budget models, although there is no noticeable difference in cost with products from other companies.
The Flamme 24 ASD model has a power of 20 kW, which is optimal for houses of 200 m2. A feature of this boiler is its high efficiency - 96.1%, which is noticeably superior to alternative options.
Works on natural gas, but can be reconfigured to liquefied gas (replacement of burner nozzles is required).
Lemax PRIME-V32
Wall-mounted double-circuit boiler, the power of which allows you to heat 300 m2 of area. It is suitable for two-story cottages, shops, public or office spaces.
Produced in Taganrog, the basic technological principles of assembly were developed by German engineers. The boiler is equipped with a copper heat exchanger providing high heat transfer.
It is calculated on operation in difficult technical conditions.
Navien DELUXE 24K
Korean boiler, the brainchild of the famous company Navien. It belongs to the budget group of equipment, although it demonstrates high performance.
It is equipped with all necessary functions, has a self-diagnosis system and frost protection. The power of the boiler is designed to work in houses up to 240 m2 with a ceiling height of up to 2.7 m.
Mounting method - wall-mounted, there is a separate stainless steel heat exchanger.
MORA-TOP Meteor PK24KT
Czech double-circuit gas boiler, designed for hanging installation. Designed for heating 220 m2. It has several degrees of protection, blocking in the absence of liquid movement.
It is possible in addition to connect an external water heater, which greatly expands the possibilities of supplying hot water.
Adapted to unstable power supply voltage (permissible fluctuation range is 155-250 V).
Lemax PRIME-V20
Another representative of domestic heat engineering. Wall-mounted double-circuit gas boiler, designed to service 200 m2.
The modulating burner makes it possible to distribute fuel more economically by changing the gas combustion mode depending on the intensity of the coolant circulation. Has a separate stainless steel heat exchanger, can be connected to a room thermostat.
Possibility of remote control.
Kentatsu Nobby Smart 24–2CS
Japanese wall mounted gas boiler providing heating of 240 m2 and hot water supply. Model 2CS is equipped with a separate heat exchanger (primary in copper, secondary in stainless steel).
The main type of fuel is natural gas, but when changing jets, it can be converted to the use of liquefied gas. Most of the performance characteristics correspond to European boilers of similar power and functionality.
It is possible to use several design options for the chimney.
Oasis RT-20
Wall-mounted double-circuit gas boiler of Russian production. Designed to work in rooms of about 200 m2. Equipped with an efficient copper heat exchanger and a stainless secondary assembly.
The combustion chamber is of a turbocharged type, there is a built-in expansion tank and a condensate drain.
With an optimal set of functions and high build quality, the model has a relatively low price, which ensures its demand and popularity.
Reviews
The opinion of users is rarely unanimous, but its value lies in disinterest and the most realistic assessment of the situation.
Here's what their owners think about choosing dual-circuit units:
(( reviewsOverall )) / 5 Owner rating (4 votes)
Your opinion
Content- Advantages of wall-mounted boilers
- Which boiler to choose single-circuit or double-circuit?
- Which is better: closed or open combustion chamber?
- What is a condensing gas boiler?
Wall-mounted gas boilers are very popular among those who use main gas to heat their private house or apartment. Compared to floor standing ones, they are more economical, compact, easy to install, and have a stylish design that will organically fit into any interior. In the selection process, many are lost in the huge range of imported and Russian wall-mounted heating boilers on the market. In this article, we will try to understand all their types and help you make the right choice.
So, you have decided to buy and install a gas boiler in your home. The first question that any buyer asks himself is: which one is better wall-mounted or floor-mounted? These are high power devices designed for heating large areas. If you live in an ordinary apartment or a small private house, then you don’t need such a device, and a hinged gas boiler will cope with the task of heating.
Advantages of wall-mounted boilers
Wall-mounted boilers have a number of advantages that make them preferable for installation. For clarity, let's look at all their advantages in more detail:
- A wall-mounted gas boiler is essentially a mini-boiler room, which is very easy to install and tie. It already includes all the necessary elements for connection to the heating system, such as: a built-in circulation pump, an expansion tank that performs the functions of deaeration and pressure control of the coolant.
- Despite the large number of built-in elements, mounted boilers are very compact and have a modern design. Such a device can be easily located even in a small kitchen or other living space.
- Most often, a wall-mounted gas boiler does not require a complex chimney system in its classical sense. To remove combustion products, they are equipped with compact coaxial chimneys of short length, which you can easily install with your own hands.
- The price of a wall-mounted gas boiler is usually lower than that of a similar model in the floor version.
As you can see, for small private houses and apartments, installing a wall-mounted boiler is the best option both in economic terms and in terms of ease of connection and piping. Let's look at the main types of these devices.
Back to indexWhich boiler to choose single-circuit or double-circuit?
As a rule, all wall-mounted gas boilers are divided into two large groups according to the number of circuits. Single-circuit boilers are designed for only one function - space heating. If you need hot water for sanitary purposes, then you will additionally need to purchase a gas water heater or boiler. You can choose the capacity and performance of the DHW heater at your discretion, however, such a system of two devices will not be cheap.
Photo 1: Installation of a wall-mounted gas boiler and water heater
With a small need for hot water, an alternative solution would be to buy a double-circuit gas boiler. In addition to the main, heating, it has a built-in second circuit that performs the functions of producing hot water.
Comfortable for use is considered a temperature of hot water around 40 ° C. One faucet consumes approximately 6.5 liters of hot water per minute. Based on this parameter, you need to choose a double-circuit boiler. With two outlets (for example, a shower and a kitchen tap), the appliance should produce about 13 liters of hot water at a comfortable temperature. Usually, at the outlet of the DHW circuit, the water temperature is 35-55 °C.
Photo 2: Piping scheme for a hinged double-circuit gas boiler Advice: In order to avoid a drop in water temperature on the way to the distribution points, a wall-mounted gas boiler should be installed in close proximity to them.
The installation of a wall-mounted double-circuit boiler is optimal only if the demand for hot water is not great. For lovers of longer water procedures, some manufacturers produce models with a built-in storage boiler of 40-60 liters. If this is not enough, then the installation of a separate electric or gas water heater cannot be avoided.
A double-circuit boiler has one significant drawback: the heating of water in the DHW circuit starts at the moment when someone opens the tap. If you do not use hot water for a long time, cold water will flow instead until the gas boiler heats it up. This process does not take much time, but still causes discomfort.
Back to indexWhich is better: closed or open combustion chamber?
Most modern wall-mounted gas boilers are produced with a closed combustion chamber. This means that the gas combustion process is completely isolated from the room in which the heater is installed. This is very good for safety reasons: such a boiler can be installed directly in a residential area without any risk to residents. The air necessary for combustion is supplied to the combustion chamber through a small one, which can be brought out directly through the wall.
Photo 3: Wall-mounted gas boiler with a closed combustion chamber The disadvantages of such devices: high price and dependence on the mains. Due to the fact that mounted boilers with a closed combustion chamber operate on forced draft provided by fans, a permanent connection to the mains is required for their operation.
Photo 4: Mounted gas boiler with an open combustion chamber Wall-mounted boilers with an open combustion chamber are much cheaper, but they use air from the room in which they are installed for combustion. That is why the installation of such heating devices should be carried out in specially designated non-residential premises with a constant supply of fresh air. Plus, they require connection to a traditional chimney.
Among mounted boilers with an open combustion chamber, there are completely non-volatile models. The entire combustion process in them is regulated by mechanical automation that does not require connection to the mains.