Wall-mounted gas boilers significantly reduce the cost of heating the premises and providing hot water supply. Compact size and stylish design allow placing heating equipment in the living area of an apartment or house.
The choice of the best gas boiler in 2020 must be made taking into account personal conditions of use and standard selection criteria. Modern boiler models meet all safety requirements and have built-in power modulators. With their help, you can maintain a comfortable temperature of the room and water, control it remotely.
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Selection criteria for gas boilers
When the decision to install heating equipment is made in favor of a wall-mounted gas boiler, it's time to get acquainted with the main selection criteria in more detail.
Thermal power
The power of the thermal gas equipment is calculated based on the area of the living space. This takes into account the number of walls, ceiling height, window sizes, number of exits, climatic zone, wind rose.
As initial data, we take the following standards: for heating a room with an area of 10 m2located in the middle lane, it is necessary to spend 1 kW of thermal energy.
To take into account the climatic zone, we use the coefficients:
| Climatic zone | Coefficient |
| Northwest | 1,5-2,0 |
| Moscow suburbs | 1,2-1,5 |
| Middle lane | 1,0-1,2 |
| Southern regions | 0,7-0,9 |
If you plan to use the boiler not only for heating the room, but also for heating water, you need to add another 20-25%.
In cold weather, energy consumption can increase, so add another 10%.
When the equipment is operating at full capacity, its service life is reduced, therefore we take a reserve of 20%.
As an example, we will calculate the required power for heating water and heating a residential building with an area of 77 m2, with a ceiling height of 2.65 m, located in the northwest region.
- Let's calculate the power by area: 77 m2/ 10 m2= 7.7 kW.
- Let's take into account the correction factor for the region: 7.7 × 1.5 = 11.5 kW.
- To heat the water, add 25%: 11.5 + 2.87 = 14.37 kW.
- Let's take into account the increase in consumption in cold weather (10%): 14.37 + 1.43 = 15.8 kW.
- Let's add a power reserve (20%): 15.8 + 3.16 = 18.96 kW.
After rounding, we obtain the required power of the heating equipment of 19 kW.
Number of contours
Boilers are 1 and 2 contour.
Single-circuit boilers are installed for heating. If over time it becomes necessary to heat water, you can connect a boiler to the boiler, but it should be borne in mind that the load on the coolant will increase.
In addition to heating, double-circuit gas boilers provide hot water.
Combustion chamber type ignition and burner
The combustion process is impracticable without oxygen. It enters the firebox from the premises, or from the street. Thus, two types of combustion chambers are distinguished:
- Open. Oxygen enters the chamber from the room. The discharge is carried out through the chimney.
- Closed. Oxygen enters the chamber from the street through the chimney.
Availability of automation
The built-in automatic control mode will help make the use of gas equipment more comfortable, as well as take care of safety and save money. It allows you to configure the operation of the boiler in such a way that in the absence of tenants, it will function with minimal energy costs, and some time before their return, it will return to standard mode.
The easiest option is to operate with one button.Advanced models have several power control modes. Advanced devices are equipped with a modulator that regulates the operation of the burners depending on the set temperature and water flow rate.
Protection system
The protection system prevents all malfunctions during the operation of the wall-mounted gas boiler: in case of voltage surges or power outages, it extinguishes the burner flame and stops the gas supply. In case of breakdowns, it displays information on the display.
Which manufacturer's gas boiler is better to choose?
There are a large number of models of gas boilers from different manufacturers on the market. The most proven:
- BAXI... The leader among manufacturers of goods for heating and hot water supply. The company is constantly developing, introducing the latest technologies into production. It specializes in the production of gas boilers with a low carbon dioxide content in the combustion products.
- Buderus... The largest European manufacturer of heating technology. Thanks to a developed network of branches around the world, it provides service support to end users.
- Vaillant... Produces a complete range of heating and water heating systems. Develops ways to obtain energy from renewable resources.
- Navien... Heating equipment manufacturer from Korea occupies a leading position. The main invention is the boiler with the highest efficiency.
- Bosch... Uses the latest technologies in the production of heating and hot water supply systems. The units are distinguished by ease of control, modern design and the ability to connect to the Internet.
- Protherm... Much attention is paid to production control and the quality of finished products.
- Ariston... By introducing modern technologies and providing timely service support, it allows the end user to save on service and spare parts.
12 best wall mounted gas boilers
The rating of wall-mounted boilers is based on the selection criteria for products presented above. We also take into account that the wall mounting option entails a number of technical limitations:
- Less power reserve;
- The close location of the main working elements.
The advantage of wall placement is compactness and aesthetics.
- Atmospheric burner is cheap, works silently, but burns oxygen in the room and has a low efficiency. It is better to place in a separate room.
- Pressurized burner can be placed in any room.
- Modulating burner it has a high performance, allows you to save on fuel, but has a high cost compared to other models.
One of the best wall-mounted boilers for the home. Thermal power varies in the range of 9.3-25 kW, this is enough to heat an apartment up to 250 m2... The efficiency is 92.9%. Designed for heating and hot water supply. Dimensions 450 × 763 × 345 mm.
3rd generation equipment. A distinctive feature is a removable digital control panel. The panel design assumes the ability to install in any convenient place. Equipped with a temperature sensor. There are 2 thermostats - for heating radiators and floor heating systems.
Advantages:
- Reliability;
- High performance;
- High-quality material and components;
- Not noisy.
Disadvantages:
- Price;
- Build quality.
Review: Decent model for heating and hot water supply to an apartment or house. The closed combustion chamber and low noise level will allow you to place the device in any part of the room. Thanks to the removable control panel, you can control the operation of the water heater from a distance.
A good wall-mounted gas boiler for a private house is compact, its size is 400 × 700 × 299 and a weight of 29 kg allows you to install attachments even in a small apartment. A high efficiency of 92% indicates high performance.
Advanced automation allows you to adjust the heating and hot water supply modes, oriented to your own needs. The protection system monitors the operation of the device in case of voltage surges, unintentional fire and freezing.
Advantages:
- Dimensions;
- Intuitive interface;
- Low noise level;
- Low gas consumption.
Disadvantages:
- Low heat output.
Feedback: High efficiency and low gas consumption can significantly save on heating and hot water supply. The compact model can be easily placed in an apartment.
Nice wall mounted heating boiler. The power reserve of 24 kW assumes the use of equipment in the house, and not in the apartment. A turbocharged boiler with a closed combustion chamber allows you to adapt to the design features of the boiler room and organize a system for supplying and removing air through the wall.
All kinds of built-in protection systems, "Winter-Summer" switch, the ability to install a remote panel.
Advantages:
- Quiet;
- Reliable;
- Stylish;
- Remote panel.
Disadvantages:
- Not adapted for operation in Russia;
- There is no water heating sensor;
- Expensive service.
Feedback: A well-equipped and assembled apparatus is not suitable for operation in Russia. Problems can arise with hard water (softeners required) and power surges.
A good double-circuit wall-mounted boiler with a heat output in the range of 8.9-23 kW. Powered by natural gas. An electronic control panel helps maintain a constant room temperature. Gas consumption - 2.67 m3/hour.
After heating the water to a certain temperature, the economy mode is activated. Remote control can be connected.
Advantages:
- Low gas consumption;
- Auto ignition;
- Built-in expansion tank;
- Security.
Disadvantages:
- Price.
Feedback: adapted for pressure and voltage differences. Allows you to significantly save on heating. The ease of operation and the intuitive control panel make the use as comfortable as possible.
Model with bithermic heat exchanger. The electronic control panel performs self-diagnostics and displays error codes. Power of 20 kW is suitable for heating and hot water supply of rooms up to 200 m2... The copper heat exchanger has high heat dissipation.
Autodiagnostics, the ability to connect the "warm floor" system. Gas control and protection against freezing, overheating and pump blocking.
Advantages:
- Build quality;
- Price;
- Power;
- Monometer.
Disadvantages:
- Not found
Review: Do you want to choose a good and inexpensive wall-mounted gas boiler for a private house? Great budget model. The device will provide heat and hot water without loss of pressure to a room up to 200 m2... Easy to operate, easy to install. The bimetal heat exchanger increases the heating rate.
Convection double-circuit boiler with an average efficiency (90.5%). The steel heat exchanger is resistant to damage and rust. Compact size 440 × 695 × 265 mm.
The presence of a room thermostat and a remote control increases the comfort of using the equipment.
Advantages:
- Cost;
- Adapted for operating conditions in Russia;
- Automatic frost protection system.
Disadvantages:
- Steel heat exchanger.
Feedback: Despite the fact that the service life of a steel heat exchanger is longer than that of other materials, it has a lower thermal conductivity. The heating equipment performed well under conditions of poor water pressure in the system.
Domestic heating equipment. The double-circuit boiler with a power range of 11-32 kW is characterized by high performance. A closed combustion chamber and a chimney with a turbine ensure high efficiency (92.2%).
Built-in 8 liter expansion tank, remote control.
Advantages:
- High-quality boiler assembly;
- LCD display;
- High performance;
- Remote access.
Disadvantages:
- High gas consumption
Testimonial: A reliable boiler of a domestic manufacturer, created taking into account the operating conditions in Russia and using foreign technologies. Meets all safety requirements. Heats up a large room quickly, hot water dispensing starts immediately after switching on.
Single-circuit boiler with a closed combustion chamber. Thermal power range from 9.3 to 25 kW. Built-in expansion tank with a volume of 8 liters. Electronic control.
Sophisticated automatic control program, remote control, remote control panel, heated floor connection.
Advantages:
- Sophisticated automation;
- High efficiency;
- Low gas consumption.
Disadvantages:
- Single-circuit.
Feedback: easy to operate. Can be completed with an indirect heating boiler. Easier to operate and maintain than dual-circuit models. Built-in automation deserves special attention, which makes the use of heating equipment as comfortable as possible.
A double-circuit boiler with a power interval of 5.4-12 kW is designed to heat a room with an area of up to 100 m2... Equipped with a closed combustion chamber, built-in expansion tank with a volume of 8 liters. Capable of producing 5.1 L / min.
The software allows you to set precise personal settings.
Advantages:
- Stylish design;
- Compact dimensions;
- Low noise level.
Disadvantages:
- Low power;
Feedback: Bosch equipment, as usual, is thought out to the smallest detail.A large number of settings allow you to adapt the device to your own needs and save on fuel. Various protection options make the equipment as safe as possible.
Convection type double-circuit boiler. High efficiency - over 94%. Gas consumption - 1.44 m3/hour. Expansion tank with a volume of 5 liters.
A feature of the model is the ability to connect external control and underfloor heating.
Advantages:
- Price;
- Fast heating of water;
- High-quality assembly;
- Clear control.
Disadvantages:
- Low power;
- Unstable water flow at two exit points.
Feedback: High-quality assembly and the use of quality materials have a positive effect on the functionality of the device. Absolute safety and external control connection smooth out the negative impression of low power of the device. A great option for a small area.
Stylish double-circuit device that provides a maximum heat output of up to 24 kW. A closed combustion chamber and a convection type heating boiler increase the efficiency up to 93.7%.
Supports external control connection.
Advantages:
- Stylish design;
- Remote control via wi-fi access;
- Low gas consumption.
Disadvantages:
- Marking surface.
- high price
Testimonial: The perfect combination of advanced technology and design. Maximum comfort during use is ensured by silent boiler operation, remote control and compact dimensions.
Gas boiler with an open combustion chamber. Provides high heat output in the range of 9-24 kW. The hot water output is 11.5 l / min. Equipped with sensors for protection against overheating, freezing and pump blocking, a safety valve. It has built-in self-diagnostics. Minimum required side clearance of 10 mm, all nodes are accessible from the front
Built-in expansion tank for 10 liters, display, remote control option.
Advantages:
- Hot water performance;
- Low gas consumption;
- Automatic control;
- Adjustable power.
Disadvantages:
- Open combustion chamber.
- High price.
Feedback: Installation of the device is possible only in a separate room, or supply ventilation is required. The built-in power modulator reduces gas consumption.
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