The most popular gas heating boilers are wall-mounted double-circuit. The best gas heating boilers according to user reviews. What is a gas boiler

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

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 are no clear instructions for setting up hot water, you have to experiment by typing;
• too small expansion tank;
• turbine noise.

Gas boiler Oasis RT-20 20 kW double-circuit

11th place. Protherm Bear 30 PLO

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

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

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

What are users saying?

Advantages:

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

Flaws:

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

10th place. Baxi NUVOLA-3 Comfort

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

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

This 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

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

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

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

Warranty - 2 years.

What are users saying?

Advantages:

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

Flaws:

• no remote control;
• battery ignition.

Gas boiler Oasis BM-18 18 kW double-circuit

7th place. Lemax Premium-20

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

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

Product warranty - 3 years.

What are users saying?

Advantages:

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

Flaws:

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

Gas boiler Lemax Premium-20 20 kW single-circuit

6th place. Baxi LUNA-3 COMFORT 310Fi

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

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

What are users saying?

Advantages:

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

Flaws:

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

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

5th place. Lemax Premium-12.5

The domestic manufacturer is literally ousting the famous brands from the market. Excellent quality and complete lack of flaws. 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

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, often you have to change them;
• low-quality automation;
• disposable dubious product.

Gas boiler Oasis BM-20 20 kW double-circuit

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

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

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

With low gas consumption, it has high performance.

What are users saying?

Advantages:

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

Flaws:

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

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

2nd place. Baxi ECO Four 24 F

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

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

What are users saying?

Advantages:

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

Flaws:

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

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

1st place. Vaillant turboTEC plus VU

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

A feature of this model is a "hot start" - when you open a 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, 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.

If you have a gas pipeline near your house, then a gas boiler will be the best and most budgetary solution. And in order for your equipment to work without failure and properly, you need to know how to choose gas boilers for heating a private house, what criteria and parameters must 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.

A modern gas unit can be installed both in a private house and in an apartment

For such equipment, in some cases, a special boiler room is equipped

1 Scopes of gas boilers for heating and hot water supply of a private house: varieties, pros and cons of designs

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

2.1 Where to install the equipment: wall and floor gas boilers

2.2 Equipment and number of circuits

2.3 Types of combustion chambers

2.4 How is the power of a gas boiler calculated

3 How to change old equipment to new: installation nuances

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

3.2 How to connect the boiler and features of installation work

3.3 How to choose a voltage stabilizer for gas boilers

4.1 PROTHERM BEAR 40 TLO 4.2

4.3 AOGV-23.2-3 Comfort N 4.4 AOGV-11.6-3 ECONOMY

4.5 BUDERUS LOGANO G234 WS-38 4.6 BAXI SLIM 2300 Fi 4.7 VAILLANT ecoVIT VKK INT 366 5 Overview of wall-mounted gas boilers: rating of the best models

5.1 WOLF CGG-1K-24 5.2 BAXI LUNA 3 COMFORT 240 Fi 5.3 NAVIEN DELUXE 24K 5.4 ROTHERM GEPARD 23 MOV 5.5 BOSCH GAZ 4000 W ZWA 24-2 A Applications of gas boilers for heating and hot water supply of a private house: varieties, pros and cons structures

If you can find a good gas boiler for a private house, then this can be a profitable solution compared to alternative options - solid fuel ones are not particularly convenient to use, and electric ones are too expensive.

Manufacturers of gas equipment offer different options for functional and high-tech equipment

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 this does not require preliminary preparation;

with proper care, operation will be safe;

high level of efficiency;

gas equipment can only be serviced once a year;

for the device to work, it is not necessary to provide access to electrical networks.

Important components of the equipment are shown in the diagram.

The right choice of the 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 drawn from them. They must be covered from the outside. Most often, metal fences are used for this.

Wall unit for giving. A sheet of steel is placed between the wooden surface and the equipment

It is worth exploring 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.

Double-sided design for enhanced functionality

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. In the event of a breakdown, they can be easily repaired. If you appreciate practicality, then bimetallic or steel heat exchangers will be the best solution.

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

Wall type model for home

Boilers can be double-circuit, single-circuit, convection, wall-mounted, floor-standing and condensing. But this is 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 be based on electronic modules;

the necessary piping of the units should include circulation pumps, expansion tanks and all kinds of security systems;

thermostats, remote control modules and special control panels can be used as control mechanisms;

some models have boilers with different capacity. These tanks allow you to store supplies of heated water for a certain period of time.

Double-circuit equipment has many applications

Consider the main classification of gas devices. Here are the main categories:

according to the installation method, the equipment is divided into wall and floor models;

for liquid heating on single-circuit and double-circuit;

according to the options for removing combustion products, the structures are turbocharged and chimney.

You can install the unit in the basement

Wall variations appeared not so long ago. All the necessary elements are located inside the case: an expansion tank, pumping equipment, a pressure gauge, a heat exchanger and a thermometer.

For installation of the device, a special room can be used, for example, designed for various household needs

Note! It is gas equipment that is the most budget option for organizing high-quality heating.

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

The choice of a gas boiler for heating a private house is influenced by such a parameter as power. For wall products, the maximum figure is 60 kW, while for floor 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 line, then liquefied gas will do. In this case, you can choose a boiler with a burner.

Installation and maintenance of the equipment may only be carried out by a specialist

See also 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 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 consumed not so quickly due to the condensation of vapors.

Some units can be quite massive

Note! To choose the appropriate option, first read the reviews and study the opinions of experts and characteristics about different models.

Where to install the equipment: wall and floor gas boilers

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

wall-mounted devices are not dependent on electricity. So that the unit does not create a large load on the wall, in production they try to reduce its weight due to different alloys. Such models will appeal to those who want to save more space, for example, it is possible to build in a closet in the kitchen. In addition, many people like the simple installation of wall-mounted gas boilers;

Wall mount above washing machine

floor devices can have unlimited capacity. There are double-circuit and single-circuit models with cast iron and steel heat exchangers. 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 unit for boiler room

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

Note! When choosing a suitable option, consider the area of ​​\u200b\u200bthe building. If the house is more than 200 sq. m., it is better to choose an outdoor unit. At the same time, the price of a floor double-circuit gas boiler for heating a private house will be less than wall-mounted counterparts, but they require a lot of free space.

Equipment and number of circuits

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

the principle of operation of a double-circuit gas boiler is based on the flow heater mode. This option is used for heating and heating water. Most often equipped with two heat exchangers. To reduce the weight, the equipment is equipped with a bithermic heat exchanger operating in an interchangeable heating mode;

The diagram shows a connection option for a two-circuit design

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

One-loop design option

The devices of gas double-circuit boilers for heating a private house are much more compact, which allows them to be used in a room with a limited area. In double-circuit designs there is a boiler and a gas water heater. If the DHW circuit is running, the heating function is switched off.

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

The diagram shows the use of the boiler

Varieties of combustion chambers

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

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

Features of the atmospheric device device can be seen in the picture

a turbocharged model of a floor-standing gas boiler with a closed combustion chamber is equipped with two fans, for exhaust gases and for air supply. At the same time, these processes are carried out forcibly, which is called with the help of turbines or fans. Such units are preferred by many because of their efficiency. Gas consumption can be reduced by 20-30%. At the same time, the efficiency reaches 95-98%, but noise may be felt during operation;

Turbo model device

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 modulating burner. These models are non-volatile. In the heat exchanger there is a condenser or a unit responsible for collecting condensate. Units operate on liquefied or natural gas. They are used for connection to low temperature structures.

Condensing equipment device

At home, equipment often works according to the convection scheme:

the burner produces thermal energy;

the heat exchanger takes heat;

heat is transferred to the heating system, and the rest is released into the atmosphere.

Convection principle of operation

How is the power of a gas boiler calculated

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;

approximate power can be found by the approximate formula - 1 kW \u003d 10 kV. m.

The table shows the calculation of the boiler power

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

window structures;

attic insulation or heated second floor;

the presence of insulation in the walls;

the presence of external walls;

ratio of floor to wall area.

How to change old equipment for new: installation nuances

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

Since such equipment is a responsible and dangerous part of housing, special government agencies are involved in its installation and maintenance. You can not make a replacement on your own and without notifying the relevant structures. Incorrect installation can endanger the lives of many people.

Equipment replacement must be carried out by a specialist

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

writing an application to a special responsible body. If the boiler is changed to a similar one, then the scheme of its installation remains unchanged. When replacing the pipe supply scheme, the location and the variety of the main unit, the project will need to be done again;

after the permit is received, it is necessary to obtain a passport, which is transferred to the gas service.

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

Repair and installation is carried out in accordance with the necessary rules and regulations

Before installing a new device, the old one is dismantled:

First you need to flush the entire system. This removes all old contaminants that may 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 supply of hot and cold water. It also disconnects from the ventilation system.

Details of gas equipment

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

There are special standards for installing a gas boiler. It is impossible to install more than two devices in a room with an area of ​​less than 7.5 square meters. Here are the requirements for installing a floor structure:

to install the boiler, it is better to equip a separate room. At the same time, it is important to ensure a natural flow of air through a grill or a hole in the wall;

a separate opening is provided for supply and exhaust ventilation;

the chimney must be sealed so that carbon dioxide and smoke do not penetrate into the room. To do this, a smaller line is installed inside the main pipe;

the room where you will install the device should be spacious enough to provide convenient maintenance and free 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;

the walls of the boiler room are only plastered. It is impossible to use materials such as plastic, fiberboard or MDF for decoration.

Gas unit adjustment

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 finished with combustible 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.

Special equipment is used to install the device

Before installation work and start-up of the equipment, it is necessary to obtain permits.

How to connect the boiler and installation features

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

When using an additional boiler, a three-way valve connection is used. While the water is heated in the boiler, the coolant stops circulating. How long the boiler will warm up depends on the dimensions of its capacity.

The device of the gas boiler must be studied before proceeding with the installation work

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

Installation of equipment requires a professional approach

Connection to the gas source is carried out by gas workers. In this case, shut-off valves for shutting off the gas must be installed. It is also mandatory to install a special filter. A pipe from the boiler is led through it, which must be made of stainless steel. The line is mounted to the branch 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 soapy water.

How to choose a voltage stabilizer for gas boilers

Which voltage regulator is better for a gas boiler depends on the following parameters:

response time affects the quality of equipment automation. This indicator means how quickly the stabilizer can correct the voltage;

the voltage range is important, indicating the limits within which the rectifier operates. When a certain value is reached, the mechanism switches off the equipment;

the degree of correction affects the stability of the output voltage;

operating temperature range is +5 - + 40 degrees.

Voltage stabilizer circuit

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

Your attention is presented with an overview of some floor models from well-known manufacturers. However, price ranges can vary greatly. You can find cheap Chinese devices and expensive models with turbocharged combustion chambers. Of the manufacturers, it is worth noting companies such as Bosh, Baxi, Ferolli and Valliant. Among domestic manufacturers, it is worth noting the Irbis company.

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Prices, rub Protherm Bear 40 TLO 69600

Viessmann Vitogas 100-F GS1D870

ZhMZ AOGV-23,2-3 Comfort N 29700

Buderus Logano G234 WS-38 140500

Baxi SLIM 2.300Fi 116300

PROTHERM BEAR 40 TLO The Prothern factory is located in Prague. Boilers of this manufacturer are characterized by durability and reliability. The Medved 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 for heating. The design provides for a heat exchanger made of cast iron, and a burner made of stainless steel. The control panel controls and adjusts the operating parameters of the unit. For control, to prevent overheating of the coolant, a cooling circuit is used. Electric ignition is designed for easy start-up of the unit.

The equipment is available in different variations, while the power varies 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 run on liquefied gas.

Protherm Bear TLO 40 Draft control for the chimney is provided. There is also resistance to complex hydraulic conditions. Additionally, you can purchase a storage broiler for heating water.

The advantages include:

high efficiency;

economical fuel consumption;

significant class of protection.

VIESSMANN VITOGAS 100-F GS1D870

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

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

Viessmann Vitogas 100-F GS1D870

Here are some features of the Vitogas 100 F:

high operational capabilities with pressure fluctuations;

long service life;

use of silent ignition;

built-in pressure control relay;

compact dimensions and light weight.

AOGV-23.2-3 Comfort N At the Zhukovsky Machine-Building Plant, single-circuit models of AOGV and double-circuit AKGV are produced. The assortment of this company includes more than 30 types of boilers. All devices are highly efficient. The price of a heating boiler for a private house depends on the configuration and materials. The equipment is equipped with both domestic and imported automation. It is used for the operation of systems with forced and natural circulation.

AOGV-23.2-3 Comfort H AOGV Comfort is suitable for heating residential and service premises. Installation of the device and its start-up and adjustment is carried out by specialists of the gas service. The unit can operate on liquefied and natural gas.

The automatic block allows for smooth adjustment of the gas flow. At the same time, it is impossible to leave a working mechanism unattended for a long time more than a day. The equipment is connected to a separate chimney, but ventilation ducts cannot be used as this.

AOGV-11,6-3 ECONOMY

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 is carried out using the automation unit. The boiler has a reliable safety system that protects against overheating.

Double-circuit gas boilers are quite widespread. They are functional, reliable, but somewhat complex in their internal structure. Therefore, their choice is often complicated by the fact that consumers cannot choose a sufficiently reliable model. In this regard, we decided to compile a rating of double-circuit gas boilers for you so that you can make the right choice.

The following brands appear on the leaderboard:

• Vaillant;
• Protherm;
• Immergas;
• BAXI;
• Buderus;
• Bosch.

Boilers from BAXI

Models from the Slim, Luna and Nuvola lines appear in the reliability rating of double-circuit gas boilers. Reviews about the rest of the lines are not the most positive, so they were not included in our review. A typical representative of BAXI products is the double-circuit wall-mounted boiler LUNA-3 240i. The unit has a capacity of 24 kW, the performance of the DHW circuit varies from 9.8 to 13.7 l / min. The primary heat exchanger is made of copper, which is already a big plus. The boiler is adapted to Russian working conditions and has a good margin of safety.

Another notable boiler is the BAXI NUVOLA-3 Comfort 240 Fi. The unit has a high efficiency, which reaches 93.9%. Its thermal power is 24.2 kW, the primary heat exchanger is made of copper. The hot water circuit can prepare up to 14 l/min. It is possible to connect underfloor heating, and there is a boiler in the design of the boiler - an excellent model worthy of replenishing the rating of double-circuit gas boilers.

Equipment from Protherm

Equipment from the Protherm brand has leaked into our rating of wall-mounted gas double-circuit boilers in terms of reliability. The Gepard 23 MOV model has a power of 23.3 kW and a DHW circuit capacity of 11 l / min - not enough, but it is quite enough for one draw-off point. The efficiency of the presented sample is 90.3%, Possibility to work with underfloor heating. The device is equipped with strapping and numerous automation systems.

A series of gas double-circuit boilers Panther has a good quality and a margin of safety. The samples presented in it are worthy of inclusion in the rating. At the choice of buyers are presented units of 25 and 30 kW, as the most popular. The equipment is characterized by high efficiency, reaching 92.8%. On sale there are modifications with open and closed combustion chambers. The capacity of the hot water circuits reaches 14 l/min.

Equipment from Vaillant

The rating of double-circuit gas boilers in terms of reliability could not be imagined without boilers from Vaillant. They are distinguished by good technical characteristics and affordable prices. A typical representative is the boiler with the long name Vaillant atmoTEC pro VUW 240/5-3, which has a power of 24 kW. The unit is endowed with an open combustion chamber, built-in piping and electronic control with the ability to connect external control units.

Equally reliable is the wall-mounted double-circuit gas boiler Vaillant ecoTEC plus VUW INT IV 246. The device included in our rating belongs to the category of condensing equipment. Thermal power is 20 kW, but the efficiency reaches 98%. According to the manufacturer, this equipment can save at least 10% of gas when heating rooms. The combustion chamber is closed here, there is a strapping in the design.

Double-circuit gas boilers from Vaillant are becoming more and more popular, which ensured their entry into our rating. They are distinguished by a high level of reliability and resistance to breakage.

Models from Immergas

The presented trademark is not the most famous in the domestic market, but it includes many quite successful models. A typical representative of our rating was the double-circuit convection gas boiler Immergas Nike Star 24 3, whose power is 23.6 kW. The equipment is endowed with an open combustion chamber, it is characterized by efficiency and good economy. It didn’t work out only with the DHW circuit - it is capable of delivering a maximum of 11.1 l/min.

Another unit has entered the rating of double-circuit gas boilers in terms of reliability - this is the Immergas Eolo Star 24 3. We have one of the most frequently requested models with an efficiency of up to 93.4%. The device is turbocharged, for its operation you will need a coaxial chimney. The design contains a circulation pump and an expansion tank of 6 liters. The maximum productivity of hot water is 11.1 l / min.

Devices from Bosch

The rating of wall-mounted gas double-circuit boilers includes models from the world famous company Bosch. In general, its products tend to fall into various ratings, as it has a solid margin of reliability. One of the samples demanded and loved by customers is the Bosch Gaz 6000 W WBN 6000-24 C. The advantages of the unit:

• Affordable cost;
• Copper heat exchanger;
• Almost complete absence of breakdowns;
• Simple control.

The power of the unit from our rating is 24 kW, the temperature of the coolant in the heating circuit is not higher than +82 degrees. The combustion chamber is of a closed type. This double-circuit gas boiler is adapted to domestic operating conditions and withstands fluctuations in supply voltage, gas and water pressure in the water supply system.

Among low-power samples, Bosch Gaz 6000 W WBN 6000-18 C can be distinguished, which is an analogue of the model described above, but of lower power - it is 18 kW.

Gas double-circuit condensing boiler Bosch Condens 3000 W ZWB 28-3 C belongs to the category of reliable and economical heating equipment. The power of the unit is 21.8 kW, it can heat the coolant to a temperature of +90 degrees. Underfloor heating and additional control panels can be connected to it. Another advantage is a decent design - here we see a strict case with a disguised control panel.

Boilers Buderus

The rating of gas double-circuit boilers is continued by models from the German brand Buderus. The leader here is the Buderus Logamax U072-24K. Its power is 24 kW, the heating area can reach 250 square meters. m. The efficiency is not bad - the maximum mark is 92%. The temperature in the DHW circuit reaches +60 degrees, but performance is quite low - from 6.8 to 11.4 l / min. The boiler is equipped with a standard control panel, but for greater convenience, a room thermostat should be connected to it.

The presented equipment received excellent customer reviews due to the clarity of control, silent operation and gas savings.

Of the low-power models, it should be noted the double-circuit gas boiler Buderus Logamax U072-12K, which was included in our rating due to its reliability. It is an analogue of the above device, but it is focused on heating households up to 120 square meters. m. Here we will find a closed combustion chamber, separate heat exchangers (the primary one is made of strong and durable copper), as well as simple and intuitive controls.

Outcome

Many other models could have been included in our rating of the most reliable double-circuit boilers. Ariston, Navien, Wolf and even domestic brands have worthy devices. But we recommend paying attention only to the most famous manufacturers - they produce more reliable equipment, which is very important when building a home heating system. If well-known manufacturers have unsuccessful models, then little-known companies have even more of them.

However, there are exceptions - sometimes boilers that could not enter the rating have been working properly for many years, while well-known units, which took 2-3 weeks to choose, literally plague users with numerous breakdowns.

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Natural gas is the cheapest energy source in Russia, so the majority opts for gas heating. Heat and hot water can be obtained using a gas boiler. On sale you can find a huge number of various modifications of such equipment. Some of them are suitable for heating an apartment, while others are ideal for heating a large private house. Let's try to figure out which gas boiler is better for heating different types of rooms.

Which gas boiler is better to choose depends on many factors: the weather conditions of the region, the heated area, the type of housing (apartment or private house), etc. The main criteria by which the best boiler is determined are:

• power;
• the number of contours;
• fastening type;
• the nature of the coolant circulation;
• type of combustion chamber;
• type of heat source.

Consider what criteria the best gas unit should meet.

What should be the power of the gas boiler?

To heat rooms of different sizes, units of a certain capacity are needed. The required performance is calculated based on the rule - 1 kW is needed to heat 10 m². If you want to receive hot water, then the power reserve is increased by 20-30%. Also, the indicator of optimal performance may vary depending on weather conditions, thermal insulation of the house and the availability of additional systems.

The performance of a gas boiler depends on the operation of the gas burner. They can be:

• single-stage;
• two-stage;
• modulating.

Single-stage are able to maintain fire in only one mode. Gas boilers equipped with such burners are not economical, but they are inexpensive. To save fuel and pay less for it, you should opt for a unit with a two-stage or, even better, with a modulating burner. The first option has two levels of work power, and the second has several performance steps (from 5 to 10). Modulating or multi-stage burners increase the efficiency of the boiler and significantly save gas.

Which is better - a single-circuit or double-circuit boiler?

Single-circuit gas boilers are designed for heating only. Double-circuit units are capable of producing heat and hot water. However, the volume of heated liquid produced by boilers with two circuits is often not enough. If you need a large amount of water for showering and bathing, you will have to buy an indirect heating boiler. It can be connected to both a double-circuit and a single-circuit unit. The second option is cheaper than the first. In addition, the boiler system with a single-circuit unit is more reliable and durable.

It is impossible to say unequivocally which gas boiler is better for heating - single-circuit or double-circuit. It all depends on the need for hot water and the personal preferences of the consumer.

Mount type

According to the type of fastening, gas boilers are divided into:

• wall;
• floor.

Wall-mounted gas units are compact in size, but their power rarely exceeds 35 kW. Thus, the most powerful wall-mounted boilers can only heat a room up to 320 m². But they easily fit into any interior and can be hung even in a small kitchen or bathroom.

Floor-standing gas boilers are large, so you will have to look for a suitable place for them, and for models with an open combustion chamber - a separate room. Stationary units are more expensive, but they can also heat larger areas than wall-mounted counterparts.

Which is better - a floor-standing gas heating boiler or a wall-mounted one, is determined depending on the type of dwelling. To heat an apartment, especially a small area, a compact wall-mounted unit will suffice. To heat a large private house or industrial premises, the best option is a floor-standing gas boiler.

Natural or forced circulation of the coolant

Gas boilers differ in the type of coolant circulation. It can be natural or forced. In the first case, the coolant moves in the heating system due to the pressure that forms in it at a certain location of the boiler, radiators and expansion tank. This option is non-volatile and ideal for regions where power outages occur frequently. Such units are equipped with an atmospheric burner, so they can only be placed in a separate room with good ventilation.

In gas boilers with forced circulation, the coolant moves through a pump that runs on electricity. In such units, turbocharged gas burners are often used, which do not require a furnace device. Their efficiency is much higher than that of non-volatile systems. The disadvantage of boilers with forced circulation of the coolant is that when the electricity is turned off, they will not be able to heat the room.

If in the settlement where you live, the electricity is rarely turned off, then it is better to purchase a device with forced circulation of the coolant. If the electricity is turned off often, then the best option is a system with a natural movement of the coolant.

Features of open and closed combustion chambers

Gas boilers can be equipped with open or closed combustion chambers. Units of the first group are called atmospheric - their installation requires a separate room, since with this type of combustion chamber, the burner uses air from the environment and flue gases also enter the room in which the unit is located. Boilers with an open combustion chamber require the installation of a traditional vertical chimney for the smoke to exit to the street. The efficiency of atmospheric devices is low and amounts to 76-85%.

Gas boilers with a closed combustion chamber are also called turbocharged. They do not require a separate boiler room and a classic chimney. To remove the products of combustion, it is sufficient to install a coaxial type pipe with an exit through the wall. Turbocharged models can be placed in the hallway, pantry, kitchen or bathroom. They take combustion air not from the room, but from the street through a coaxial chimney and have a high efficiency = 88-95%.

Many are lost in the choice of which gas boiler is better for heating a house - atmospheric or turbocharged. If you are purchasing such a unit for the first time, then it is better to opt for a device with a closed combustion chamber, as it consumes fuel more economically and you can not spend money on a boiler room and a full-fledged smoke exhaust system.

If the boiler is bought to replace the old atmospheric unit into an already equipped furnace equipped with a chimney, then it will be more profitable to purchase a similar model.