TOP 10 energy-independent gas boilers for heating a private home: review of models + selection rules

The leader is the “Patriot” series boiler from the manufacturer Lemax, which works with both natural and forced heating systems. The design is chimneyless, so installation is possible not only in a cottage or country house, but also in a city apartment. Combustion air is taken in and combustion products are removed through a coaxial chimney mounted in the wall near the unit.

The heat exchanger is made of 2-mm high-quality steel that meets the requirements of GOST, and is coated on top with corrosion-resistant enamel that protects the metal from mineral oils and salt solutions. The gas valve and micro-flare burner are original parts made in Italy.

To create a convection effect, the front panel is perforated. Safety is increased due to the built-in gas control system and overheating protection. The efficiency is 87%, the warranty period is 3 years.

Specifications:

• type – convection;
• contours – one;
• Max. power – 12.5 kW;
• gas consumption – 0.75 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation - parapet;
• dimensions (w/h/d) – 595/740/360 mm;
• weight – 50 kg.

Thanks to the removable lining, servicing the unit is easy and quick, and you can monitor the operation of both burners, pilot and main, through the viewing window.The efficiency is 87%, the warranty period is 3 years.

In second place is a Ukrainian-made product, the Termomax series “C” single-circuit boiler, which won positive reviews for its reliable assembly and simple controls. Even a non-technical user can handle servicing the unit. The model is ready for installation in a private house or apartment; operation requires the installation of a coaxial chimney.

The boiler copes “excellently” with heating the coolant; temperature settings are regulated within the range of 50-90 °C. If you plan to install the unit in a system with high hydraulic resistance, it is recommended connecting a circulation pump.

The pilot burner is started by piezo ignition and is protected from emergency situations by a protection system.

Specifications:

• type – convection;
• contours – one;
• Max. power – 10 kW;
• gas consumption – 1.12 m³/h;
• pressure – 12.74 mbar;
• control – mechanical;
• installation - parapet;
• dimensions (w/h/d) – 475/690/335 mm;
• weight – 43.8 kg.

For preventive purposes, it is recommended to clean it 1-2 times a year. The control unit with piezo ignition button, thermo/pressure gauge and control knob is located on the front panel. The efficiency is 90%, the warranty period is 3 years.

The floor-standing model of the Ukrainian brand ATON took third place in the rating due to its successful set of technical characteristics and user-friendly design. The boiler’s performance is enough to heat a room of 160 m², that is, it is suitable for a large cottage or multi-room apartment.

The manufacturer recommends installing the unit against an external wall to facilitate installation coaxial chimneynecessary to ensure the combustion process. It is also necessary to create optimal conditions in the room for the operation of the boiler and its maintenance, that is, to establish natural air circulation.

Despite the word “Compact” in the name of the model, it looks bulky in comparison with analogues from other brands. But, unlike the others, it has little depth.

Specifications:

• type – convection;
• contours – one;
• Max. power – 16 kW;
• gas consumption – 1.8 m³/h;
• pressure – 1.5 bar;
• control – mechanical;
• installation - parapet;
• dimensions (w/h/d) – 740/700/275 mm;
• weight – 61 kg.

As coolant It is recommended to use purified water without minerals such as lime, and install filters. Distilled or melt water is suitable. The efficiency is 90%, the warranty period is 1 year.

The second Lemax model to be included in the rating of the best boilers with closed-circuit valves.It has less power than the previous one - only 10 kW, but is not inferior in operating efficiency. Recommended for installation in small cottages, seasonal country houses, city apartments.

Fuel consumption is economical - only 0.6 m³/h. Management is done manually. There is a temperature indicator on the front panel. The unit is turned on by simultaneously turning the control knob and pressing the piezo ignition button. The maximum heating temperature is 80 °C.

If there is a large hydraulic resistance, the manufacturer recommends including in the installation diagram circulation pump, expansion tank, drain and safety valves.

Specifications:

• type – convection;
• contours – one;
• Max. power – 10 kW;
• gas consumption – 0.6 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation - parapet;
• dimensions (w/h/d) – 595/740/360 mm;
• weight – 50 kg.

To clean the elements involved in the combustion process, it is enough to remove the lining. The operation and condition of the burners are monitored through inspection windows. The efficiency is 87%, the warranty period is 3 years.

Operation at the highest level

The top three with a closed combustion chamber is completed by the third model, Lemax Patriot, with a power of 20 kW. It is intended for equipping heating systems of large private houses. The installation method and principle of smoke removal are the same as for all units of this brand.

The boiler is more bulky than its low-power counterparts, and this must be taken into account during installation. It is recommended to strengthen the base for installation, since the weight of the equipment is 67 kg, and to finish the adjacent wall with non-combustible materials. It is best to line the surrounding surfaces with metal sheets.

Like other equipment in the Lemax Patriot series, the boiler is equipped with a POLIDORO injection burner and an Italian-made SIT gas valve.

Specifications:

• type – convection;
• contours – one;
• Max. power – 20 kW;
• gas consumption – 1.2 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation - parapet;
• dimensions (w/h/d) – 670/790/400 mm;
• weight – 67 kg.

The unit does not require constant monitoring. Maintenance is carried out with the cover removed; it is convenient to control the burners through special windows. The efficiency is 87%, the warranty period is 3 years.

The first place in the TOP 5 boilers with an open combustion chamber is occupied by the “Leader” model with a power of 16 kW from the same manufacturer Lemax. In the top five, 4 out of 5 units belong to this popular brand in Russia. The boiler is designed to heat an area of ​​160 m², that is, it is suitable for heating 1- and 2-story cottages.

A distinctive feature of Leader boilers is a Czech-made cast iron heat exchanger.Thanks to high quality 4mm gray cast iron components manufactured by VIADRUS, maximum heat transfer and anti-corrosion properties are ensured.

The unit is equipped with overheating protection and a gas control is installed that blocks the fuel supply when the fire dies out. The thermometer allows you to monitor the temperature of the liquid in the circuit, and the pressure gauge allows you to monitor the pressure.

Specifications:

• type – convection;
• contours – one;
• Max. power – 16 kW;
• gas consumption – 1.9 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation – floor;
• dimensions (w/h/d) – 431/856/515 mm;
• weight – 95 kg.

Constant monitoring of the unit is not required. It is possible to switch from natural gas to liquefied gas if there is no chance to connect to the public pipeline. The efficiency is 90%, the warranty period is 3 years.

The model has many positive reviews from users who like literally everything - from a clear, intelligently assembled design to effective heating and excellent technical data. The model is single-circuit, designed only for heating the room. If hot water is also needed, we recommend considering double-circuit gas boilers.

The maximum area that can be heated with a 20-kilowatt boiler is 200 m² - this is a large cottage or industrial area. The powerful unit requires more fuel - 2.4 m³/h, however, it belongs to the economical models.

Thanks to the cylindrical heat exchanger, the equipment copes with work in closed heating systems, the pressure in which reaches 3 atm.

Specifications:

• type – convection;
• contours – one;
• Max. power – 20 kW;
• gas consumption – 2.4 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation – floor;
• dimensions (w/h/d) – 556/961/470 mm;
• weight – 78 kg.

All boiler elements are maintained manually by first removing the lining. The gas burner and safety elements are made in Italy. The efficiency is 90%, the warranty period is 3 years.

A relatively small-sized, medium-power model for equipping heating systems in country houses, as well as non-residential premises for various purposes. A good solution for autonomous networks connected to natural gas. Equipped with a single-stage injection burner. Not suitable for other fuels such as propane.

Thanks to the pressure and temperature indicator, it is easy to control the heating process and make timely adjustments. Like other boilers, protection against overheating and flame extinction is provided. The steel heat exchanger has good thermal conductivity and quickly heats the water.

The dimensions are compact, the design is minimalist. Thanks to its small width and depth, installing the unit is much easier than more bulky and powerful models.

Specifications:

• type – convection;
• contours – one;
• Max. power – 16 kW;
• gas consumption – 1.9 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation – floor;
• dimensions (w/h/d) – 390/745/460 mm;
• weight – 46.5 kg.

Caring for the boiler is not difficult: you need to clean the burner on time and carry out a preventive inspection of the automatic components. The efficiency is 92.5%, the warranty period is 2 years.

Another “cast iron” model of Russian production, the most powerful of the Leader brand units presented in the rating. Suitable for open and closed heating systems. A heat exchanger with 4 mm walls, made of gray cast iron, holds heat well, but significantly increases the weight of the unit.

Italian burners and the security system work flawlessly, as confirmed by service center employees. If boilers from the “Leader” series are repaired, it is mainly due to the fault of the users - due to operational errors.

Not the largest dimensions of the unit are deceptive - it weighs more than other models. This must be taken into account during transportation and installation. The efficiency is 90%, the warranty period is 3 years.

Specifications:

• type – convection;
• contours – one;
• Max. power – 35 kW;
• gas consumption – 4 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation – floor;
• dimensions (w/h/d) – 600/856/520 mm;
• weight – 140 kg.

The unit is designed for heating systems serving areas up to 350 m².For standard country houses these are too powerful boilers, but we recommend that owners of large 2-story cottages consider this option.

Rounding out the top five units with OKZ is another model from the “Leader” series, but with a power of 25 kW. In design and functions, it completely replicates the previous boiler, but differs only in technical characteristics: power, fuel consumption, dimensions, weight. Suitable for heating an area of ​​240 m².

The main advantages still include a cast-iron heat exchanger with 4 mm thick walls, thoughtful assembly, and timely automatic operation. Italian parts fail in rare cases, but in general the system with the boiler works smoothly, almost flawlessly.

Specifications:

• type – convection;
• contours – one;
• Max. power – 25 kW;
• gas consumption – 3 m³/h;
• pressure – 13 mbar;
• control – mechanical;
• installation – floor;
• dimensions (w/h/d) – 515/856/515 mm;
• weight – 115 kg.

This 25-kilowatt model is quite compact for its power, but it weighs a lot. For installation, you must provide a stable and level base. The efficiency is 90%, the warranty period is 3 years.