Top 20 best two-circuit wall mounted gas boilers: price/quality rating 2024-2025

Gas boilers are by far the most convenient way to heat any room. To simplify the search for the right device, we have analyzed the models presented in online stores, studied their functionality and features, got acquainted with the technical characteristics and reviews of owners. Below is a ranking of the best, quality, and reliable two-circuit wall mounted gas boilers for 2024-2025, grouped by the most popular query categories.

Ranking of the best two-circuit wall mounted gas boilers

Place	Name	Price	Rating
Best two-circuit wall mounted gas boilers by price/quality for 2024-2025
1	Buderus Logamax U072-35K	Check price	4.9 / 5
2	Viessmann Vitopend 100-W A1JB011	Ask the price	4.8 / 5
3	BAXI ECO-4s 18F	Check out the price	4.7 / 5
Best double convection wall mounted gas boilers
1	Buderus Logamax U052-24K	Learn the price	4.9 / 5
2	BAXI ECO-4s 24F	Check out the price	4.8 / 5
3	BaltGaz Turbo E 18	Check out the price	4.7 / 5
The best two-circuit wall-hung gas condensing boilers
1	Buderus Logamax plus GB172-30 iK	Check out the price	4.9 / 5
2	Mizudo M24TK	Learn more about the price	4.8 / 5
3	Bosch Condens GC7000iW 20/28 C	Learn the price	4.7 / 5
The best two-circuit wall mounted gas boilers 24 kW
1	Mizudo M24T	Learn more about the price	4.9 / 5
2	Navien DELUXE COMFORT 24K	Learn more about the price	4.8 / 5
3	BaltGaz Turbo E 24	Check price	4.7 / 5
The best two-circuit wall hung gas boilers with closed combustion chamber
1	BAXI LUNA-3 310 Fi	Check out the price	4.9 / 5
2	Buderus Logamax U072-28K	Learn more about the price	4.8 / 5
3	Ariston ALTEAS X 30 FF NG	Learn the price	4.7 / 5
Best single wall mounted gas boilers
1	Bosch Gaz 6000 WBN 6000-18 H	Learn the price	4.9 / 5
2	Buderus Logamax U072-24	Learn more about the price	4.8 / 5
3	Protherm Panther 25 KTO	Check out the price	4.7 / 5
The best inexpensive two-circuit wall mounted gas boilers
1	Navien Deluxe S COAXIAL-24k	Learn more about the price	4.9 / 5
2	Neva Lux 7210	Learn more about the price	4.8 / 5

How to choose a two-circuit wall mounted gas boiler?

Often the buyer is faced with the question, which boiler to buy? What is better wall-mounted or floor-mounted equipment?

In order not to make a mistake with the choice, the following criteria are taken into account:

• Boiler type. Can be floor standing and wall mounted. Wall-mounted boilers are smaller than their counterparts and are better suited for heating an apartment or apartment building, since they do not need a boiler room.
• Thermal capacity. On average, 1 kW of appliance power can heat about 8 m2. Calculate the total area you need to heat and divide by 8, then you will get the required number. Add another 1 kW for heating water. Do not forget about the additional parameters in the calculation: the thickness of the walls, their material, the number and quality of windows and doors, the presence of the attic, etc.
• Contours. Gas wall mounted boilers can be single-circuit and double-circuit. One-circuit only heats the room, and two-circuit in addition to this heats the water. The cost of double-circuit models will be only 10-15 percent higher.
• Type of combustion chamber. Can be open closed. In boilers with an open chamber, the air will be taken from the room where the boiler stands, so there must be a chimney where it is located.
• Principle of operation. Convection boilers are ordinary appliances that accumulate heat energy by burning gas in the combustion chamber. Some of the heat is lost in the process. Condensing type - more expensive and advanced, with an additional heat exchanger that accumulates the heat of the condensate from the exhaust gases. The temperature of the latter is very low, and the energy, accumulated by an additional heat exchanger, is used to heat the return line.
• Ignition method. The ignition can be done manually or with the help of built-in elements. The first method is more accessible and easier, and the second - more economical. The minus of the second will be the dependence on the availability of electricity.

The best two-circuit wall mounted gas boilers by price/quality for 2024-2025

Buderus Logamax U072-35K.

Introducing a powerful two-circuit gas boiler from one of the most reliable manufacturers. This is probably the most iconic model of the 2015 lineup. The device features an impressive value of the useful thermal capacity (35 kW), medium size, clear and simple control system and a significant efficiency.

The manufacturer presents it as a mid-priced unit, which is used to create the structure of heating and hot water supply in private houses, apartments and office premises with a total area of up to 280 m2. Stylish and pleasing to the eye design along with compactness will allow the boiler to blend into any room. Closed combustion chamber and forced flue system allows the device to work with a relatively simple coaxial chimney system and is safe for installation in residential areas. The closed chamber also allows the unit to be installed directly in residential areas without harming the environment.

This model tolerates moderate voltage fluctuations in the electrical network and remains operational even with low gas pressure. The device is controlled electronically, so you will not need to constantly monitor its work. The disadvantage may be the disconnection at sudden spikes in electricity.

Technical characteristics

• Boiler type: gas, convection;
• thermal capacity: 12.20 - 35 kW
• combustion chamber: closed
• control: electronic;

2. Viessmann Vitopend 100-W A1JB011

Let's consider another two-circuit wall mounted gas boiler, which was included in the top of the best. This is a model of 2017, which is in the medium price category. Closed combustion chamber will allow you to install it in the living room without disturbing the residents. The unit is great for heating and hot water structures of a house or large apartment with a total area of up to 239 m2.

Stylish and eye-catching design along with its compact size allows the boiler to fit into any interior. The appliance is almost silent and can therefore be installed directly in the living space. The well and smoothly adjustable gas burner and the proprietary control system make the unit economical to operate. There is a screen on the body, which allows you to view the necessary parameters of the device. The boiler shows a good efficiency (91%) in conditions of domestic gas and electric networks.

It also has several safety systems: automatic gas shutoff when the flame goes out, overheating and freeze protection, and pump lockout. When the weather is cold, the boiler occasionally warms itself up so that there is no breakdown. The model is perfectly adapted for operation in conditions of moderate fluctuations in gas pressure and voltage. In the case of sharp fluctuations, there may be a shutdown.

Technical characteristics

• heating boiler type: gas, convection;
• Max. heat output: 29.90 kW;
• EFFICIENCY: 91%;
• Control: electronic;

3. BAXI ECO-4s 18F

Two-circuit gas boiler of medium power for wall mounting. It is characterized by its small size, low noise level and reasonable cost for its parameters. The unit is equipped with a closed combustion chamber and forced venting, which allows it to be installed within residential areas without harming the residents. Useful heat output is 18 kW, it can heat a small house or apartment up to 144 m2.

The electronic control system, which is equipped with an informative display, is user-friendly and intuitive. The boiler works with a remote thermostat and a programmable timer. It is perfectly adapted to the peculiarities of domestic gas networks and is equipped with numerous safety systems: flame control, pressure and water temperature.

It can be used at very low temperatures because it has frost protection, warming up periodically so that it does not break down. Stylish and pleasing to the eye design along with compactness will allow the boiler to blend into any interior.

Technical characteristics

• Type of heating boiler: gas, convection;
• thermal capacity: 9.30 - 18 kw;
• thermal load: 10.60 - 20 kw;
• EFFICIENCY: 92.5 %;
• control: electronic;

The best two-circuit convection wall mounted gas boilers

Buderus Logamax U052-24K

Model two-circuit gas boiler, suitable for domestic conditions. The apparatus is characterized by a fairly good useful thermal capacity (24 kW), the moderate size of the body, clear and convenient control system, as well as high efficiency (more than 90%) in domestic conditions of use. The manufacturer presents it as a device of medium price category, designed for heating and hot water supply systems in houses, apartments and other premises with a total area up to 280 m2.

The stylish and eye-pleasing design along with its compactness will allow the boiler to blend into any interior. The ignition method is auto ignition. Electronic control system allows you to save fuel and does not require your constant presence. Through the use of closed combustion chamber and forced flue system, works with a simple chimney system and safe for installation in residential areas.

This model well tolerates moderate voltage fluctuations in the electrical network and is able to function stably even with low gas pressure. Special mention should be made of the frost and overheating protection, which allows the unit to be used in any season. Special sensors measure the temperature of the coolant, and if it drops, the boiler turns on for a short time.

Technical characteristics

• Type of heating boiler: gas convection;
• thermal capacity: 9.80 - 24 kw;
• heat output: 11.20 - 26.20 kW
• EFFICIENCY: 90.03 %;
• control: electronic;

BAXI ECO-4s 24F.

Two-circuit gas boiler for wall installation. It is characterized by its small size and low noise level. Stylish and pleasing to the eye design, along with its compactness will allow the boiler to fit into any interior. The unit has a closed combustion chamber and forced venting, which allows you to install it in residential and work areas without harm or danger to people.

Useful thermal power is not bad - 25 kW, it is enough to heat a small house or a city apartment. The electronic control system, which is equipped with an informative screen with the necessary parameters about the device, is simple and will be intuitively understandable to the buyer. The boiler works with a remote thermostat and a programmable timer. It is perfectly adapted to the peculiarities of domestic conditions of use and is equipped with numerous protections, including reliable control of flame, pressure and water temperature.

It can be used at very low temperatures because it has sensors for measuring the temperature of the coolant. If the temperature drops, the boiler will automatically turn on for a short time to warm up. Another feature of the model is that it works well even when the gas pressure drops to 5 mbar.

Technical characteristics

• Type of heating boiler: gas, convection;
• Thermal output: 9.30 - 24kW;
• Heat output: 10.60 - 25.80 kW; - Heating load: 10.60 - 25.80 kW
• EFFICIENCY FACTOR: 92.9 %;
• control: electronic;

3. BaltGaz Turbo E 18

An energy-efficient, small-sized wall-mounted gas boiler model that can be used at any time of year. It has a function of programming the work for the week ahead, and protection against overheating allows you to safely leave it unattended. The stylish and eye-pleasing design along with its compact size will allow the boiler to fit into the interior of any room.

The functionality of the device has several modes: Winter connects heating and hot water, Summer leaves only hot water working, and Underfloor heating optimally regulates the temperature of the heating medium to avoid overheating. Eco mode allows you to save gas by controlling the unit. The body has a display, which displays all the necessary information on the functioning of the device.

The heat exchanger here is made of copper, which is a sample of environmentally friendly material. The anti-freeze function allows you to use the device even at low temperatures, you will not be left without heating in winter. Temperature sensors will help to understand if the coolant is too cold, and the device will briefly turn on to warm up. Hourly and weekly programmer will allow you to set the order of the device on and off.

Technical characteristics

• Boiler type: gas;
• combustion chamber type: closed;
• power type: single-phase;
• control: electronic;

The best two-circuit wall-hung gas condensing boilers

Buderus Logamax plus GB172-30 iK

Productive energy efficient wall mounted gas boiler from a well-known manufacturer, which perfectly covers the needs of a family of 3-5 people. The manufacturer presents it as a product of the upper price category, designed for heating private houses, large multi-bedroom apartments, office or other premises. The stylish and eye-catching design along with its compactness allows the boiler to fit into the interior of any room.

The useful maximum heat output can reach 30 kW, which will help heat an area up to 240 square meters. The main advantage of this model over other two-circuit gas boilers is energy efficiency. With the same useful power as other appliances you will save gas considerably.

Special design provides additional cooling of combustion products and allows you to use the latent heat of condensation of water vapor present in the hot flue gases. Water is heated quickly, you can heat up to 12 liters per minute if heated to 35 degrees.

Technical characteristics

• Boiler type: gas condensing boiler;
• thermal capacity: 4.20 - 30 kw;
• combustion chamber: closed;
• EFFICIENCY FACTOR: 109 %;
• control: electronic;

2. the Mizudo M24TK.

Wall mounted gas boiler at an affordable price. It can easily fit in small spaces due to its compact size. The stylish and eye-pleasing design along with its compactness will allow the boiler to fit in the interior of any room.

On its body there is a color display, which will tell you the main parameters of operation and status of the unit. The heat exchanger and burner are made of stainless steel, a material with high thermal conductivity. "Noise accompaniment" during the work of the boiler is quite low, up to 32 dB, it will not interfere even if you mount it in the kitchen. It is possible to set the timer for heating the coolant, and there is a daily programmer. The boiler provides a high temperature and heating rate of water.

Another plus will be easy access to the nodes of the device, which greatly facilitates its repair. In case of problems, the boiler can perform self-diagnosis and show the cause on the screen. Safety of the unit is well thought out, there is protection against overheating, smoke evacuation and automatic air venting. The device allows you to connect a room thermostat, remote temperature sensor, Wi-Fi module, as well as a cascade regulator. For cold water a filter is built in.

Technical characteristics

• heating boiler type: gas, condensing;
• thermal capacity: 4.80 - 24 kw;
• thermal load: 5.30 - 24 kW
• heated area: 160 sq.m;
• EFFICIENCY FACTOR: 95%;
• control: electronic;

3 Bosch Condens GC7000iW 20/28 C

Two-circuit wall mounted gas condensing boiler with an additional heat exchanger. Thanks to its size, the device perfectly fits into any room. Pleasing to the eye design along with compactness will allow the boiler to fit into the interior of any room.

In conditions of domestic networks gives an efficiency of 90%, so it can be recommended as suitable for use. At a temperature of 30 degrees, the boiler can heat up to 11.8 liters per minute of hot water. The flame of the burner is continuously adjustable, which will give the possibility to change the intensity of gas supply, reducing and increasing it, which can help to reduce consumption. The model is controlled electronically, on its body there is an informative display, which shows the main characteristics.

The disadvantage of this system can be that it sometimes fails in case of sudden power surges. Manometer shows the pressure inside the coolant, it allows you to avoid exceeding and breakdowns. Separately need to say about the system of protection of the device: there is a gas control (gas automatically stops fed when the flame goes out), the system of removing excess air, coolant protection against freezing (independent switching on when the temperature drops), safety valve that protects against increasing pressure, and coolant protection against overheating.

Technical characteristics

• Type of boiler: gas, condensing;
• thermal capacity: 3.80 - 20.50 kW
• max. heating load: 28.70 kW; control: electronic; pressure switch
• control: electronic;

The best two-circuit wall mounted gas boilers 24 kW

Mizudo M24T

Wall mounted gas boiler with good performance and proven safety system. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room. The "noisiness" of the device is quite low, the values can reach only 32 dB. The manufacturer has provided an opportunity to set the timer for heating the coolant, as well as daily programming. The boiler provides a high temperature and water heating rate.

Another plus will be free access to the nodes of the device, which will greatly facilitate its repair. In case of malfunction, the boiler can perform self-diagnosis and show the cause on the screen. Safety of the device is well thought out, there is protection against overheating, smoke removal and automatic air venting.

The device allows you to connect a room thermostat, remote temperature sensor, Wi-Fi module, as well as a cascade regulator. A filter is built in for cold water. After one hour of operation in the DHW system, the boiler automatically switches to heating mode. Another advantage will be protection against boiling water and exceeding the maximum temperature.

Technical characteristics

• Type of heating boiler: gas, convection;
• thermal capacity: 8.20 - 24 kw;
• heat output: 9.60 - 24 kW; - heating load: 9.60 - 24 kW
• EFFICIENCY: 90.5 %;
• control: electronic;

2. Navien DELUXE COMFORT 24K

Another model of wall mounted two-circuit gas boiler. Its small size helps it successfully fit into even the smallest space. The model is mounted on the wall, which also greatly saves space in the room. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room.

The closed combustion chamber allows you to place the device directly in the living quarters. In domestic networks, the efficiency is about 91%, which is very good and quite suitable for our places. Operated electronically, the model has a display on its body, which displays basic information on the functioning.

The advantage of the electronic system is that it is undemanding to your constant supervision, and the main disadvantage - it often fails during sudden spikes in voltage. The safety system here is a little worse, but there is gas control, i.e. stopping the gas supply when the flame goes out. The device can operate autonomously in case of power outage, which will not freeze the system in winter or just keep the hot water and heating.

Technical characteristics

• Type: gas;
• Heat output: 8 - 24 kW;
• heated area: 240 sq.m;
• COP: 91.4%;
• control: electronic;

3. BaltGaz Turbo E 24

Energy efficient model of wall mounted gas boiler of small dimensions, which can be used at any time of the year. The simple and pleasant design along with its compactness will allow the boiler to fit into the interior of any room. It has a function of programming work for the week ahead, and protection against overheating allows you to safely leave it unattended.

The functionality of the device has a Warm Floor mode, which allows you to optimally regulate the temperature of the coolant to avoid overheating. Eco mode will help to make the gas consumption less by controlling the power of the unit. There is a display on the housing, which displays basic information on the operation of the device.

The heat exchanger here is made of copper, which is a sample of environmentally friendly material. The anti-freeze function allows you to use the device even at low temperatures, you will not be left without heating in winter. The boiler will turn on by itself for a short time when it cools to warm up and eliminate the possibility of failure. Hourly and weekly programmer will allow you to configure the order of switching on and off the device.

Technical characteristics

• Boiler type: gas, convection
• thermal capacity: 9 - 24 kW;
• heated area: 240 sq.m;
• EFFICIENCY FACTOR: 92 %;
• control: electronic;

The best two-circuit wall-hung gas boilers with closed combustion chamber

BAXI LUNA-3 310 Fi.

Two-circuit gas boiler of the automatic type. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room. Its installation is made on the wall, which will save space. The efficiency of the accumulator when working in domestic networks will reach 93%, which makes the device suitable for use in our realities.

It is a convection type device, that is, it generates heat from the combustion of gas fuel. Auto ignition will allow you to start and stop the device according to an algorithm to save gas. Burner flame regulation allows you to change the intensity of gas supply, which also makes the device more ergonomic. The control system here is electronic, its advantage is that there is no need to constantly monitor the operation.

Minus can be called some instability in case of sudden surges of electricity. Thermometer and manometer show the temperature and pressure of the water in the coolant to avoid overheating and breakdowns. The protection system is very good here: gas control (turning off the gas in case of power outage), safety valve, air vent to remove excess air, freeze protection (periodic inclusion of the device when idle and lowering the temperature in it to avoid damage), overheating and lock the pump.

Technical characteristics

• Boiler type: gas, convection;
• thermal capacity: 10.40 - 31 kw;
• thermal load: 11.90 - 33.30 kW
• heated area: 310 sq.m;
• EFFICIENCY FACTOR: 93.1%;
• control: electronic;

2. Buderus Logamax U072-28K

Powerful two-circuit gas boiler from one of the largest manufacturers. This is probably one of the most functional models in the line of Logamax U072. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room. The unit is characterized by a good value of the useful heat output (28 kW), as well as the average size of the body.

The control system will be clear and simple, and the efficiency under the conditions of domestic networks will be high (92%). The manufacturer presents it as a product of the medium price category, designed for the organization of heating and hot water supply in private houses, apartments and office space. The boiler is connected by auto ignition.

Thanks to the use of a closed combustion chamber and forced smoke extraction system, it can function with a simple coaxial chimney system and is safe for installation in residential buildings without danger to the occupants. This model tolerates small voltage fluctuations in the network and can operate stably even with low gas pressure.

There is an indicator on the housing that shows if the device is working. Can be used in the cold season, because it has protection against freezing in the form of temperature sensors that "notice" the cooling of the coolant. After this, the boiler will turn on itself for a short time to prevent the system from freezing.

Technical characteristics

• Boiler type: gas, convection
• Thermal capacity: 8.40 - 28 kw;
• heat output: 9.30 - 31 kW; - heat output: 9.30 - 31 kW;
• EFFICIENCY: 92%;
• Control: electronic;

3 Ariston ALTEAS X 30 FF NG

Convection wall mounted gas two-circuit boiler of a well-known brand. It is mounted on the wall, which helps to save space in the room. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room.

In the conditions of domestic networks the device has an efficiency up to 94%. Convection allows you to generate heat by burning fuel, which is gas. Burner flame regulation allows you to switch the intensity and helps you save gas. Auto ignition switches the burner on and off when required by the algorithm.

The case of the device has a display and a connector for connecting additional devices (thermostats, remote control, programmers). The device is controlled electronically, so it does not require constant monitoring of operation. Sometimes malfunctions can occur due to sudden power surges. Of the protection systems here is the gas control, which allows you to stop the gas supply when the flame goes out, safety valve that protects against excessive water pressure, bleeding excess air, as well as protection against freezing and overheating of the coolant.

Technical characteristics

• Type of boiler: gas, convection;
• thermal capacity: 13 - 30 kw;
• Heating load: 14.40 - 33.30 kw;
• EFFICIENCY: 93.8 %;
• control: electronic;

The best single-circuit wall mounted gas boilers

Bosch Gaz 6000 WBN 6000-18 H

Single-circuit wall mounted gas boiler, which is one of the younger models of its family. Thanks to its dimensions, the device fits perfectly in any room. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room.

In conditions of domestic networks gives a good efficiency, and its ability to work does not suffer from sudden changes in voltage. Works almost noiselessly and is resistant to freezing. The burner's flame control will allow you to smoothly change the intensity of the supply by turning it up and down, which can help reduce gas consumption.

The model is controlled electronically and has an informative display on its body where the main characteristics are shown. Separately it is necessary to tell about a system of protection of the device: there is a gas control (the gas automatically stops fed when the flame goes out), the system of removing the excess air, a safety valve for pressure protection. The manufacturer presents the device as a product of the medium price category. The closed combustion chamber allows you to install the device directly in residential areas.

Technical characteristics

• Type of heating boiler: gas, convection;
• thermal capacity: 5.40 - 18 kw;
• thermal load: 6 - 20 kW
• heated area: 180 sq.m;
• control: electronic;

2. Buderus Logamax U072-24

Powerful wall mounted gas boiler, which will significantly save space due to its installation. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room.

This is one of the most interesting models in the Logamax line. The apparatus is characterized by a good value of the useful heat output (28 kW), medium-sized dimensions of the housing, clear and simple control system, as well as high efficiency (92%) in domestic networks. The manufacturer presents a product of the average price category, designed for heating and hot water supply in houses, apartments and other premises with an area of 110-240 square meters.

The boiler is connected by auto ignition. Thanks to the use of a closed combustion chamber and forced flue extraction system, works with a relatively simple chimney system and is safe for installation in a room or the kitchen. This model tolerates moderate voltage fluctuations in the electrical network and is able to maintain stable operation at low gas pressure. There is an indicator light on the body to show if the unit is working. It can be used in cold seasons as it is protected against freezing. Temperature sensors mark its decrease, then the boiler switches itself on for a while to prevent the system from finally cooling down.

Technical characteristics

• Boiler type: gas, convection;
• Thermal capacity: 7.20 - 24 kw;
• thermal load: 8 - 26.70 kW
• EFFICIENCY FACTOR: 92%;
• control: electronic;

3. Protherm Panther 25 KTO

Single-circuit wall mounted gas boiler. Its dimensions are small, and the possibility of mounting it on the wall will further free up space in the room. Simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room.

The closed type of the combustion chamber allows you to place the device even directly in the living room. In domestic networks, its efficiency will be 90%, which is a very good indicator. Heat is generated from the combustion of gas. Electric ignition or auto ignition allows you to turn the burner on and off according to the algorithm. Burner flame regulation allows you to reduce or increase the intensity of supply and save gas.

The appliance is controlled electronically. On its body there is a display with information about the state of the boiler. Protection here is impressive: gas control, which allows to stop gas supply when the flame goes out, safety valve against excessive water pressure, extra air venting, as well as protection against freezing and overheating of the coolant and pump blocking, which is activated when the boiler is idle for a long time. In the case of a drop in the temperature of the coolant boiler starts automatically to warm up the system.

Technical characteristics

• Type of heating boiler: gas, convection;
• heat output: 8.40 - 25 kW;
• heating load: 9.40 - 27.10 kW;;
• heated area: 250 sq.m;
• control: electronic;

The best inexpensive two-circuit wall gas boilers

Navien Deluxe S COAXIAL-24k

Budget two-circuit wall mounted gas boiler, which easily fits even the smallest room due to its size. Wall mounting will also save a lot of space in the room. A simple and pleasant design along with compactness will allow the boiler to fit into the interior of any room.

In domestic conditions, the efficiency will be about 91%, so you can safely take the device for heating water or space heating. It is equipped with a display that shows all the necessary information and is controlled electronically. This system is economical and does not require your constant presence, but on the other hand it is more vulnerable to voltage fluctuations. Manometer shows the pressure inside the coolant to avoid overpressure and breakdowns.

The protection system of the boiler is not bad: there is gas control (automatic shutdown of gas when the flame goes out), safety valve, which protects against increasing water pressure, frost protection and overheating, as well as protection against pump blockage, which is activated if the equipment does not work for a long time. The boiler sometimes turns on automatically for a time to warm up the system.

Technical characteristics

• Boiler type: gas, convection;
• thermal capacity: 8-24 kW;
• heated area: 240 sq.m;
• EFFICIENCY: 91.4%;
• Control: electronic;

2. the Neva Lux 7210

Budget class two-circuit boiler that can easily fit into even the smallest room. Closed chamber type with forced venting of combustion products will allow you to hang it directly in the living room without harming the residents. The simple and pleasant design along with its compactness will allow the boiler to fit in the interior of any room.

The model is controlled electronically and has an informative and ergonomic display. Electronic control allows the user to pay less attention to the device, but on the other hand can not always protect against power surges. The lightweight lid and hinged side panels provide the possibility to repair the product. Silent operation will be another plus for those who place the unit directly in the house or apartment.

The heating and DHW circuits and pipes are made of copper, which greatly increases their thermal conductivity. The choice of protective functions here is smaller, but impressive for its segment: gas-control, which automatically shuts off the gas supply when the flame goes out, air vent and fuse, protecting against high water pressure.

Technical characteristics

• Boiler type: gas;
• thermal capacity: 8.90 - 10 kw;
• heated area: 100 sq.m;
• EFFICIENCY FACTOR: 91 %;
• control: electronic;

What company to choose?

Reliability and long life of use are distinguished by units produced by companies: Ariston, Baxi, Ferroli, Bosch, Viessmann, Protherm, also not bad GAZLUX, Konord, Lemax.

Conclusion

Choose a two-circuit wall mounted gas boiler is possible if you pay attention to the characteristics and criteria you need. If you determine for what purpose and what power of the device you need, the search will not be long, and the result in the form of the purchase will bring the pleasure of long-term use.

Useful Video

In this video you will get acquainted with the rating of the best two-circuit wall mounted gas boilers: