Top 20 best gas boilers: rating 2024-2025 by price/quality

This rating included gas boilers for heating a private home, which are characterized by simplicity and cost-effectiveness in everyday life. This option is suitable for those whose home is not connected to the general heating and hot water system. Gas boilers can be installed both in high-rise buildings and in rooms with a small area. Despite the popularity of gas boilers, almost everyone does not know how to choose and what to focus on when buying.

Rating of the best gas boilers 2024-2025

Location	Name	Price	Rating
Best gas boilers by price/quality for 2024-2025
1	Buderus Logamax U072-28K	Check price	4.9 / 5
2	Mizudo M24TK	Learn the price	4.8 / 5
3	BAXI SLIM EF 1.22	Learn the price	4.7 / 5
4	Lemax Premium-25N	Learn the price	4.6 / 5
The best single-circuit gas boilers for heating
1	Protherm Bear 20 KLOM	Learn the price	4.9 / 5
2	Buderus Logamax U072-24,	Check out the price	4.8 / 5
3	BAXI SLIM 1.230 iN	Learn the price	4.7 / 5
4	Lemax Premium 12,5N	Learn the price	4.6 / 5
The best two-circuit gas boilers
1	Lemax Premium-30B	Learn the price	4.9 / 5
2	Protherm Bear 20 KLZ	Check out the price	4.8 / 5
3	BAXI SLIM 2.300 Fi	Check out the price	4.7 / 5
Best condensing gas boilers
1	Buderus Logamax plus GB172-30 iK	Learn the price	4.9 / 5
2	Bosch Condens GC7000iW 20/28 C	Learn more about the price	4.8 / 5
3	Viessmann Vitodens 050-W BPJC	Check out the price	4.7 / 5
The best gas boilers for heating at 24 kW
1	BAXI ECO-4s 24F	Check out the price	4.9 / 5
2	Bosch Gaz 6000 WBN 6000-24 H	Learn the price	4.8 / 5
3	Buderus Logamax U052-24K	Learn the price	4.7 / 5
The best inexpensive gas boilers for heating
1	Lemax Gazovik AOGV-6	Learn the price	4.9 / 5
2	Signal S-TERM 12,5	Learn more about the price	4.8 / 5
3	Arderia B18	Ask the price	4.7 / 5

How to choose a gas boiler for heating a private house?

It is necessary to take into account the following indicators:

1. Power.
2. Type of combustion chamber.
3. Presence of loops.
4. Type of installation of the gas boiler.
5. Functionality.

When choosing gas equipment, pay attention to what capacity the boiler is suitable for the room. Very often consumers, choosing a gas boiler, do not pay attention to the capacity. Thus, it turns out that they will buy a boiler more powerful than necessary for the house where it will work.

To select the boiler, consumers use average values, on average, for a room with an area of 10 m2 supposedly requires 1 kW of heat, but this is an approximate figure. Always based on the choice of boiler capacity is the calculation of heat loss of the building, which will be heated by the boiler.

Best gas boilers for heating by price/quality for 2024-2025

This category presents the best gas boilers for heating a private home 2024-2025, which not only have excellent technical characteristics, but also differ from many others with high reliability and reasonable cost.

1. Buderus Logamax U072-28K

Buderus Logamax U072-28K automatic type with a capacity of 28 kW is designed for heating 280 m2. High-quality heating equipment, able to work reliably in conditions of average latitudes. A distinctive feature of the boiler is the fan and the burner of modulated type. With their help it is possible to conveniently change the output of the device according to the requirements of the heating system, which significantly increases the efficiency.

There is a magnetic overlay on the decorative facing of the boiler, on which there is a reminder icon, how to regulate and change the temperature of the heating system and hot water preparation, how to switch the boiler to summer mode. If you use an uninterruptible power supply will work even if the power goes out. This is useful when you need to protect the system from defrosting in winter or just to keep the heat and hot water supply going.

Technical Specifications

• Heat output - 8.40-28 kW
• Heat load - 9,30-31kW

2: Mizudo M24TK

Built-in innovative system of monitoring parameters of the boiler MIZUDO constantly monitors the performance of the boiler, informs the user about possible malfunctions and the need for timely maintenance. The boiler has 2 modes of operation - for radiators or for underfloor heating - and can operate in economic mode. The difference in the temperature of the heated water, water supply and water purification is adjustable.

For incoming cold water there is a filter. There is a daily programmer, as well as a timer for heating the coolant. The boiler provides a high output of hot water. Optimization of the heating temperature reduces the energy costs. The equipment is equipped with a protection system: from exceeding the maximum temperature of water in the heating system, from boiling of heating water and electronic protection against loss of heating water pressure - the boiler turns off when the coolant pressure drops to 0.5 bar.

Technical characteristics

• Thermal energy - 8,20-24 kW
• Heat loads - 9,60-24kW
• Dimensions - 403x693x247 mm

3. BAXI SLIM EF 1.22

Baxi SLIM EF 1.22 outdoor with atmospheric burner (single circuit). Equipped with an atmospheric burner and made of cast iron. The line features a safety function: if the flame goes out, the gas valve automatically closes. Therefore, there is no need for watering. It is controlled mechanically, which means that the main parameters can only be adjusted manually. The warranty period of Baxi is two years from the date of commissioning of the unit, but not more than 30 months from the date of sale of the unit. Regular maintenance is at the customer's expense or is included in the cost of the equipment maintenance contract.

Technical characteristics

• Maximum heating power - 22 kW
• EFFICIENCY - 88%
• Dimensions - 400x850x595 mm

4. Lemax Premium-25N.

Steel gas boiler Lemax premium 25N - a solid, safe and durable device for connecting autonomous heating in rooms for various purposes. The body is made of 2 mm thick steel. The enamel coated heat exchanger is treated with an inhibiting compound, protected against corrosion and overheating. The top panel is removable for easy maintenance and cleaning of the boiler.

The front panel has a temperature regulator and thermometer. Maximum efficiency by increasing the heat transfer area and using an innovative design of turbulators for maximum retention of exhaust gases. Soft start system, providing acoustic comfort when starting the boiler Easy boiler maintenance through the use of an easily removable top panel.

Technical characteristics

• Maximum heating capacity - 25 kW
• Heated space - 250 sq.m.

The best single-circuit gas boilers for heating

This category presents the best models, which have proven themselves only from the best side.

Protherm Bear 20 KLOM

Protherm Bear 20 KLOM automatic type with a capacity of 17 kW for heating 170 m2. Gas stationary heating boiler. The power of the device is regulated by means of a modulating burner. The heat exchanger consists of several cast-iron profiles.

There is an electronic system of ignition and flame control. The average efficiency during the heating season is 92%. Possibility of controlling the boiler for hot water preparation. Natural or forced type flue gas exhaust. Constant freeze and anti-cycling function.

Control the functions of the unit with the display and buttons. Automatic diagnostic function is to display codes of boiler operation status. The presence of a pressure gauge is the display of pressure readings in the heating system. Use of turbocharger for removal of combustion products through the outer walls. Control of the boiler temperature sensor and boiler pump for hot water.

Technical specifications

• Thermal energy - 12-17 kW
• EFFICIENCY - 92%
• Dimensions - 335x880x600 mm
• Weight - 90 kg

Buderus Logamax U072-24.

Buderus Logamax U072-24 have a design that differs little from the device of most similar units. The main element is a closed gas burner, which heats the coolant in the copper primary heat exchanger. The hot water coming out of it enters the secondary plate-type heat exchanger, where hot water is prepared. It has an electronic control, equipped with a display.

Technical characteristics

• Heat energy - 7,20-24 kW
• Dimensions - 400x700x299 mm

3. BAXI SLIM 1.230 iN

BAXI SLIM 1.230 in is a floor standing gas boiler with a cast iron heat exchanger and natural discharge of flue gases into the existing chimney. Modern design and small dimensions make it easy to place the boiler in any room. Two temperature control ranges in the heating system. Built-in weather-dependent automation. Regulation and automatic maintenance of the set temperature in the heating circuit. Regulation and automatic maintenance of the set temperature in the boiler. The draught sensor is a thermostat for controlling the safe removal of combustion gases.

Technical characteristics

• Thermal energy - 11,80-22,10 kW
• Heat load - 13,50-24,50 kW
• Dimensions - 350x850x600mm
• Weight - 103 kg

4. Lemax Premium-12,5N.

Model Lemax Premium-12,5N is installed on the floor in accordance with all the necessary edging from the walls. Natural gas pressure must be at 13 mbar to obtain the declared power of 12.5 kW, reduction of these parameters will lead to a reduction in heat energy. Convection type equipment assumes heat generation from combustion of gas fuel, while the boiler operates on natural gas. Improved system of protection against overheating of the heat exchanger, loss of draught, soot formation, boiler blowdown. Easy maintenance of the boiler thanks to the use of an easily removable top panel.

Technical characteristics:

• Maximum heating area - 125 m2
• Dimensions - 416х744х491 mm
• Weight - 60 kg

The best two-circuit gas boilers

The design of two-circuit boilers has everything you need for heating and hot water. In this category there are models that combine safety, reliability and optimal performance. The top two-circuit gas boilers for private homes include the following models:

1. Lemax Premium-30B.

Steel gas boiler Lemax Premium-30B is designed to create an autonomous heating in rooms and houses. The device has a solid steel casing with removable liner elements. It is treated with an inhibiting compound and has protection against overheating.

Boiler with microflare burner works on natural or liquefied gas (after reconfiguration). The unit can be cleaned simply by removing the front panel. Coolant overheat protection shuts down the burner if abnormal water temperature is noted.

Technical characteristics:

• Power - 30 kW
• Maximum heating surface - 300 m2
• Dimensions - 556x961x470 mm
• Weight - 88 kg

2. the Protherm Bear 20 KLZ

Protherm Bear KLZ is the easiest solution for those who do not want to worry not only about heat, but also about the availability of hot water. Outdoor boilers with cast iron heat exchanger have a built-in boiler of 90 liters. It has an electronic control and is equipped with a display. Designed for heating country houses, cottages and other premises. Can heat an area of up to 350 m2. In two-circuit units it is possible to heat water without additional equipment on the flow principle. This boiler is two-circuit. This is a modern, reliable equipment, which has a 24-month warranty (EV) and meets all safety requirements.

Technical characteristics

• Thermal energy - 12,10-17 kW
• Heat load - 13-18,50 kW
• Dimensions - 505x1385x730 mm
• Weight - 140 kg

3. BAXI SLIM 2.300 Fi

Outdoor gas boiler with cast iron heat exchanger. Thin-walled boiler is equipped with all the necessary controls and devices that provide the necessary protection during operation. Floor standing boilers made of cast iron are supplied by the Italian brand.

The models are adapted to Russian operating conditions, equipped with atmospheric burners and characterized by the capacity of 15-62 kW. The equipment is made in two-chamber single-circuit format, has all controls, safety features, including devices for automatic shutdown of boilers in the absence of gas. The models are compact, suitable for enclosed spaces, equipped with electronic automatic diagnostic capabilities that detect ten possible types of faults.

The range includes boilers with closed chambers, suitable for operation if there is no possibility to arrange a chimney. Gas saving is achieved by continuous modulation of the fire rather than by staged switching. Control and automatic maintenance of the set temperature in the boiler (for models with built-in or separate boiler). Electronic temperature indication.

Technical characteristics

• Thermal energy - 14,90-29,70 kW
• Heating load - 17-33 kW
• Dimensions - 350x850x680 mm
• Weight - 126 kg

The best condensing gas boilers

Condensing gas boilers differ from conventional boilers by increased efficiency and power, which are successfully combined with economical fuel consumption.

1. Buderus Logamax plus GB172-30 iK

Buderus Logamax Plus GB172-30 iK is characterized by high performance and reduced energy consumption. The new model from the titanium product line has received class A certification under the European ERP certification system. Massive glass front, large touch screen. No minor innovations are hidden inside the boiler: an improved heat exchanger with a 10-year warranty; a clever arrangement of components to ensure reliable orientation and optimized service and installation time; various sensors and assemblies to enable efficient operation with renewable energy sources. The condensing boiler has a capacity of 30 kW and is designed for heating and hot water systems. It is already equipped with an energy-saving hydraulic unit. The black color of the glass front panel makes it modern and spectacular. It can easily become part of a completely different interior. Thanks to its compact size and low weight, this boiler can be installed quickly in any room.

Technical characteristics

• Heat energy - 4,20-30 kW
• EFFICIENCY - 109 %
• Dimensions - 440x840x350 mm
• Weight - 52 kg

2. Bosch Condens GC7000iW 20/28 C

Bosch GC7000iW 20/28 C - this is a two-circuit gas boiler, which allows you to simultaneously organize a heating system in the house and hot water system. The device has a fairly compact size and modern design, so it can be installed in any living room (bathroom or kitchen), completely without damaging its interior. Stylish, economical and multifunctional.

Efficient operation is controlled by various sensors, there is protection against overheating, freezing and dry start. Special technology allows you to monitor the tightness of closing of the gas valve. The circulation pump has an energy-saving function. The boiler has the ability to connect the floor heating. The only disadvantage is the price.

Technical characteristics

• Thermal energy - 3,80-20,50 kW
• Dimensions - 440x840x360 mm

3. Viessmann Vitodens 050-W BPJC

The Vitodens 050W type BPJC is small, highly efficient and environmentally friendly, and quiet in operation. The size of the boiler is very small, it is easy to allocate space for this model, even in the kitchen. Condensing boiler uses not only the heat released during direct combustion of gas, but also the latent heat contained in the steam products. As a result, the efficiency of the boiler can reach 108%.

The boiler's cylindrical burner, which maintains a modulation range of 1, also helps save fuel. If a high load is not required of the boiler, the burner will be able to consume significantly less gas. Made of stainless steel, it is durable and acid resistant.

The boiler is equipped with an expansion tank of 8 liters and an energy efficient circulation pump, as well as the necessary accessories and safety devices. The boiler has a closed combustion chamber, it can be equipped with a coaxial chimney of 100 mm diameter for supply air and exhaust gases.

Technical characteristics

• Max. heat output - 24 kW
• EFFICIENCY - 97.1%
• Dimensions - t400x707x350 mm
• Weight - 35 kg

The best gas boilers for heating at 24 kW

The review examines the characteristics of the best models of gas single-circuit units with a closed combustion chamber, which have high performance when supplying heat and hot water to rooms up to 200 m2.

BAXI ECO-4s 24F

Baxi ECO4S 24 F - is an inexpensive household appliance equipped with separate heat exchangers: the primary is made of copper and has a special anti-corrosion coating, and for the hot water system uses stainless steel plate. Also convenient boiler control interface, with which the table displays complete information about the operating parameters, as well as data on self-diagnosis.

Designed to run on natural gas, but if necessary, it can also run on liquefied fuel. Coolant temperature is regulated by a built-in thermometer, but for economical use of fuel it is also possible to install an external thermometer, which is responsible for reading the temperature of the outside air. A three-way valve, which together with the pump provides protection against blockages, is responsible for the safety of the operation.

Technical characteristics

• Heat energy - 9,30-24,kW
• Heat load - 10,60-25,80 kW
• Dimensions - 400x730x299 mm
• Weight - 30 kg

2. Bosch Gaz 6000 WBN 6000-24 H

Bosch boiler is used for heating systems. The area in which the boiler is able to provide a high level of thermal comfort reaches 350 square meters. The unit develops a maximum output of 24 kW for heating and 24 kW for hot water. Removal of combustion products is carried out by a coaxial chimney with a fan.

The unit allows the installation of a duct separator or removal of combustion products through a system of separate chimneys. Combustion products are evacuated by means of a coaxial smoke exhaust system. In the case of separate smoke evacuation through a system with a diameter of 80 mm. The weight of the unit is 30 kg. The low weight was achieved by reducing metal consumption. The hydraulic group is made of plastic.

Technical characteristics

• Heat energy - 7,20-24 kW
• Heat load - 8-26. 70 kW
• Weight - 30 kg

3. Buderus Logamax U052-24K

This boiler refers to the model with a closed chamber and forced evacuation of combustion products (such boilers are often called turbine). This model has a capacity of 24 kW and is equipped with a copper bithermal heat exchanger. The unit is guaranteed for 2 years from the date of sale. Electronic flame modulation is available. You can assign the control over the comfort in the rooms by means of weather-dependent automation. These boilers are aimed at consumers who want to create a modern heating system in their home with separate temperature control in different directions. The model range is designed for use in residential buildings.

Technical characteristics

• Heat energy - 9,80-24 kW
• Heating load - 11,20-26,20 kW
• Dimensions - 400x735x360 mm
• Weight - 41,5 kg

The best inexpensive gas boilers for heating

Finding a model that fits any budget will not be difficult, and the installation of such a device will save significantly on heating.

Lemax Gazovik AOGV-6

Floor standing boiler Lemax AOGV-6 Gazovik is equipped with modern automation and a burner made in Italy. This is an energy-independent model with gas hot water with removable cladding and profile elements for seamless integration into the interior and ease of maintenance. Thanks to the coating with anti-corrosive enamel "CERTA" (exposure temperature 750°C) and treatment with inhibiting composition the exchanger is protected from aggressive factors: saline solutions, mineral oils. Works in closed systems with operating pressure up to 1 atm.

Technical characteristics:

• Max. heat output - 6 kW
• The heated premise - 50 sq.m.
• Dimensions - 282x685x473 mm
• Weight - 31 kg

2. Signal S-TERM 12.5

S-TERM 12,5B (KOV-12,5 SCWS) - two-circuit hot water boiler is designed for hot water and heating the premises up to 125 m2. If you want to buy efficient and high-quality heating equipment at an affordable price, you should choose this device.

This is a modern single-circuit boiler with an open combustion chamber, which uses imported components and modern technology. Equipped with the Italian automatic system eurosit 630, Polidoro burner with reduced noise level, a new type of pilot burner. The source of thermal emf is a thermocouple.

Adapted for Russian heating systems. They are easy to install and operate, and service components are available in all regions of Russia. The compact size of the device allows it to be installed in small rooms. Thanks to the reliable protection and control systems you can be sure of safe operation of the device.

Technical characteristics:

• Max. heat output - 12,50 kW
• EFFICIENCY - 90%
• Dimensions - 260x690x470 mm
• Weight - 40 kg

3. the Arderia B18

This wall mounted gas boiler with a closed combustion chamber, designed for heating and hot water. The area of heated space ranges from 53 to 250 m2. Produced in-house in Russia.

They combine economy, high quality and reliability. Boiler is economical and simple. Operation of the facility is aimed at producing heating and hot water. There is a function of self-diagnosis, in case of internal faults, the device beeps and displays an error code. Another advantage of the model is the low noise level. It is possible to connect a room thermostat. The device is equipped with a two-thermal dual circuit heat exchanger.

Technical characteristics

• Heat energy - 4,20-18 kW
• EFFICIENCY-90%
• Dimensions - 420x652x243 mm

What company to choose?

Among the manufacturers of gas boilers, European, Asian and Russian companies have proven themselves. You can choose, for example, the German manufacturer Buderus, the Italian brand Ariston or Japanese Rinnai. Of the Russian firms it is worth noting Lemax, which collects positive feedback from customers. One of the main requirements for gas equipment, including heating boilers, is safety. All well-known manufacturers attach special importance to this.

We have tried to briefly tell you which option is better to choose, how to choose a modern and efficient gas boiler for heating in a private home. Before making a decision, we recommend to consult with experts. Gas is a source of increased danger.

Useful video

In this video you will get acquainted with the review of the best gas boilers: