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Rating of floor gas boilers in 2023

Gas floor boilers


  •  Although the efficiency of floor boilers is less than that of wall-mounted boilers, the former are cheaper and break less often due to the simplicity of the design. Some models have cast iron heat exchangers, very durable – 25 years or more. Steel serves, on average, 12-13 years. Copper heat exchangers – 5-8 years.

  •  So that you can choose the best option for the price and characteristics, I studied the reviews of experts and ordinary users, and made a rating of floor gas boilers in 2023.

Rating of single-circuit floor gas boilers

10. BAXI SLIM 1.230 iN, 22.1 kW

BAXI SLIM 1.230 iN, 22.1 kW in the ranking of single-circuit floor standing gas boilers

  • Combustion chamber type: open
  • Dimensions (WxHxD): 350x850x600 mm
  • Management: electronic

  •  The convection floor boiler, with an efficiency of 90.2%, differs from other participants in the review by the material of the heat exchanger. It is made of cast iron, hence the weight of the device – 103 kg.

  •  This gas boiler can operate in underfloor heating mode, and its rich functionality puts it on a par with the best wall-mounted boilers. The device provides for the connection of an outdoor temperature sensor, protection against freezing or boiling of the coolant is implemented.

  •  There are also self-diagnosis of faults, electronic flame modulation, gas control and pump blocking protection.

Pros and cons reliable design convenient electronic control rich functionality can be reconfigured to work on liquefied gas price

9. Lemax Gazovik AOGV-23.2

Lemax Gazovik AOGV-23.2

  • Combustion chamber type: open
  • Dimensions (WxHxD): 451x938x566 mm
  • Non-volatile: yes
  • Management: mechanical

  •  This Russian-made unit is designed for space heating up to 200 sq.m, and runs only on natural gas, consuming 1.2 cubic meters. m/hour. The efficiency is not bad for a floor model – 87%. Working pressure – up to 3 atmospheres.

  •  The heat exchanger is made of 2 mm thick steel, and an easily removable top panel provides quick access to the inside of the appliance.

  •  Of the safety features, the manufacturer announced a protection system against interruption of thrust, soot formation and blowing out of the boiler. Management is as simple as possible – mechanical.

Pros and cons

8. Arideya CCGO 25

Arideya CCGO 25

  • Combustion chamber type: open
  • Management: mechanical
  • Max. thermal power: 25 kW
  • Chimney diameter: 130 mm

  •  The high cost of this model is due to the cast-iron heat exchanger 4 mm thick, and the ability to work on both methane and liquefied gas. Consumption – 2.6 m³ / hour. Efficiency – 92%, which is higher than that of many similarly priced models.

  •  Although the heat exchanger is Russian-made, the gas valve and parts of the gas burner device from the Italian company SIT Group and the injection microtorch burner manufactured by the Italian Worgas are used in kchgo 25.

Pros and cons high-quality assembly reliable and durable heat exchanger no

7. Siberia KCHGO–16, 16 kW

Siberia KChGO–16, 16 kW

  • Combustion chamber type: open
  • Dimensions (WxHxD): 410x850x610 mm
  • Non-volatile: yes
  • Management: mechanical
  • Weight: 95 kg

  •  One of the best floor gas boilers, both in terms of service life (cast iron heat exchanger), and in terms of the size of the heated room – up to 200 m² and efficiency – 90%.

  •  Both natural and liquefied gas are suitable for this model, fuel consumption is moderate – 1.7 cubic meters. m/hour or 1.21 kg/hour respectively.

  •  In addition to the standard protection in the form of Siberia gas control, KCHGO-16 is equipped with a gas filter to prevent dust and debris from entering the boiler system.

Pros and cons powerful durable there is a pressure gauge and thermometer heavy

6. Lemax Premier 17,4 kW

Lemax Premier 17,4 kW

  • Combustion chamber type: open
  • Dimensions (WxHxD): 415x865x615 mm
  • Non-volatile: yes
  • Management: mechanical
  • Weight: 60 kg

  •  In addition to high efficiency (90%), this model attracts attention with a stylish design. Of course, gas boilers are not created for the sake of beauty, but it's nice that the manufacturer made sure that his appliance became a decoration of the room.

  •  The heat exchanger is steel, the boiler consumes 1.74 cubic meters per hour of operation. m. of natural gas. The chimney can be connected both horizontally and vertically.

Pros and cons design simple mechanical control minimum noise level no

5. Protherm Bear 20 KLOM

Protherm Bear 20 KLOM in the top 5 floor standing gas boilers

  • Thermal power: 12 – 17 kW
  • Combustion chamber type: open
  • Dimensions (WxHxD): 335x880x600 mm
  • Management: electronic

  •  The most expensive option in the ranking of gas single-circuit floor boilers. Let's look at why this "Bear" has such an expensive "skin":

  1. Reliable cast-iron two-way three-section heat exchanger.
  2. Frost/overheat protection.
  3. Efficiency 92%.
  4. There is a self-diagnosis.
  5. Auto ignition.
  6. flame modulation.
  7. Display showing the current temperature.

  •  The device operates on natural or liquefied "blue fuel", consuming, depending on the type of gas, 2 cubic meters. m/hour or 1.6 kg/hour. Suitable for space heating up to 170-200 sq.m.

Pros and cons build quality wide functionality for remote control, you can connect the ZONT H-1V GSM module price weight (90 kg)

4. Pechkin KSG-10

Pechkin KSG-10

  • Combustion chamber type: open
  • Dimensions (WxHxD): 340x620x490 mm
  • Non-volatile: yes
  • Management: mechanical
  • Functions: overheating protection
  • Weight: 35 kg

  •  A model with a funny name is suitable for heating a room of 100 m². The efficiency is 87%. Pechkin runs on natural gas, with a very economical consumption – 1.1 cubic meters. m/hour.

  •  When the coolant overheats or the flame goes out, the device will turn off on its own, so everything is fine with safety.

  •  The heat exchanger of this model is steel.

Pros and conscompacteconomical none

3. Signal S-TERM 25

Signal S-TERM 25

  • Combustion chamber type: open
  • Dimensions: 257 x 717 x 552 mm
  • Non-volatile: yes
  • Management: mechanical
  • Functions: overheating protection

  •  Buyers consider a Russian product manufactured in Engels to be one of the best floor boilers. The boiler is the most modern – that is, its efficiency is high (90%), and little fuel is consumed – 1.5 cubic meters. m/hour.

  •  Such a boiler will quickly warm up the house and will not plunge the owners into a debt hole. And it works almost silently and is elementary in control – why not a model of perfection?

Pros and cons small size economical no



  • Combustion chamber type: open
  • Dimensions (WxHxD): 340x640x448 mm
  • Functions: overheating protection
  • Weight: 33 kg
  • Maximum heat output: 12 kW

  •  A small and inexpensive boiler that can maintain heat in a room of 120 sq.m. It runs on methane and liquefied gas, has a good efficiency of 92% and an average fuel consumption of 1.2 cubic meters. m/hour or 0.9 kg/hour.

  •  It is easy to connect (although specialists should do such work), the heat exchanger is made of steel. Installed automation TGV307, which is easy to find on sale.

Pros and cons small inexpensive easy to operate cheap spare parts no

1. Lemax Premium-30N, 30 kW

Lemax Premium-30N, 30 kW the best single-circuit floor gas boiler

  • Combustion chamber type: open
  • Dimensions (WxHxD): 470x961x556 mm
  • Non-volatile: yes
  • Management: mechanical
  • Functions: overheating protection

  •  Although this boiler was manufactured in Taganrog, it has imported Italian components for a gas burner and safety automation from SIT.

  •  High power allows the boiler to heat an area of up to 300 square meters, with an efficiency of 90%. The gas consumption in this case is 3.5 cubic meters. m/hour.

  •  The boiler is equipped with a draft sensor, protection against overheating of the heat exchanger, blowing out the boiler, or soot formation. There is a temperature controller on the front panel.

  •  A room thermostat can be connected to the appliance for the most precise adjustment of the indoor temperature.

Pros and cons simple and reliable mechanical control high power durable steel heat exchanger (steel thickness – 2 mm) no

Rating of double-circuit floor gas boilers

5. Conord AOGVK – 11,6-1, 11.6 kW

Conord AOGVK – 11,6-1, 11.6 kW opens the rating of floor double-circuit gas boilers

  • Combustion chamber type: open
  • Dimensions (WxHxD): 320x953x406 mm
  • Non-volatile: yes
  • Management: mechanical

  •  A small and inexpensive double-circuit floor boiler designed for rooms up to 116 sq.m. Producer – Rostov company "Concord".

  •  The boiler can only run on natural gas, while consuming 1.38 cubic meters. m / h, with an efficiency of 90%. Management, like other inexpensive floor models, is mechanical, but this is a plus – there is practically nothing to break. From protection – gas control.

Note: there is a version of this boiler with the abbreviation AOGV. It does not have a hot water circuit.

Pros and cons

4. Lemax Classic-20W

Lemax Classic-20W

  • Combustion chamber type: open
  • Dimensions (WxHxD): 451x926x568 mm
  • Non-volatile: yes
  • Management: mechanical

  •  A gas boiler operating with both natural and liquefied gas has an efficiency of 90% and is designed for space heating up to 200 square meters. Management – mechanical, heat exchanger – steel, safety automation – 630 EUROSIT. In the absence of gas, the boiler automatically stops working.

  •  Fuel consumption when using natural gas is 2.4 cubic meters. m/hour.

Pros and cons easy to connect and operate since the production is Russian, there are no problems with spare parts reliable no

3. ZhMZ AKGV-17,4-3 Universal N, 17.4 kW

ZHMZ AKGV-17,4-3 Universal H, 17.4 kW

  • Combustion chamber type: open
  • Dimensions: 420 x 1050 x 480 mm
  • Non-volatile: yes
  • Management: mechanics

  •  Massive floor boiler, which, despite its impressive dimensions, looks modern and elegant. The build quality and materials are excellent.

  •  The device has a good efficiency (about 88%), however, according to buyers, it is not easy to turn it on – the control is far from intuitive and requires a good acquaintance with the instructions.

Pros and cons build quality and materials nice appearance difficult control

2. Atem Zhitomir-10 KS-G-010SN

Atem Zhytomyr-10 KS-G-010SN

  • Type: convection gas double-circuit
  • Combustion chamber type: open
  • Non-volatile: yes
  • Management: mechanical
  • Functions: overheating protection

  •  I must say right away: the boiler is massive – it weighs 56 kg. This is both a boiler and a column, and it heats the water instantly, and the performance at a water temperature of 35 ° C is 6.5 l / min.

  •  This model has excellent efficiency – 94% and low fuel consumption – 1.09 cubic meters. m/hour. The primary heat exchanger is made of steel, and the boiler capacity allows heating a room of 100 sq.m.

Pros and cons

1. Lemax Premium-25B, 25 kW

Lemax Premium-25B, 25 kW the best floor gas boiler for a private house

  • Combustion chamber type: open
  • Dimensions: 556 x 961 x 470 mm
  • Non-volatile: yes
  • Management: mechanical
  • Functions: overheating protection

  •  And Russian buyers give the laurels of the best outdoor gas boiler for a private house to Lemax models. This is a floor boiler that can heat both air and water. Designed for areas up to 250 m².

  •  It is reliable, unpretentious, easy to operate and inexpensive. Another nice feature is the additional protection of the heat exchanger with a special heat-resistant paste.

Pros and cons reliable safe easy handling heavy – 88 kg

Boilers of which company is better in terms of reliability

The best brands of gas boilers

  1. Atem

  •  Atem boilers are manufactured by a factory in Zhytomyr, Ukraine. They are well known in the CIS countries due to the combination of simplicity, reliability and low prices.

  1. Baxi

  •  The Baxi brand belongs to the European association BDR Thermea Group, whose products are supplied to more than 70 countries around the world. Representative office was opened in 2002.

  1. Protherm

  •  Protherm boilers are assembled outside Russia, but not in China, but in Slovakia – the company's production facilities are located there. According to the press service, the boilers are of high quality – both due to the high standards of the organization, and the personal responsibility of the assembler for the resulting product.

  1. Siberia

  •  Heating boilers called "Siberia" are produced by southern residents – production is located in the city of Rostov-on-Don, where winters are not so severe. However, this does not harm the quality and reliability of the boilers: the company specializes exclusively in home equipment, so it can afford to hone its products to perfection.

  1. Conord

  •  One of the oldest and largest factories for the production of heating equipment – it was built back in 1979. Since then, according to the Conordovites, more than 2 million Russians have been heating their homes with the company's products. Despite its authoritative age, Conord's products are the most modern – boilers of European quality, which, at the same time, are adjusted to the harsh Russian weather conditions.

  1. Lemax

  •  The Taganrog company "Lemax" has long been well known to buyers of heating equipment – it has been on the market since 1992, which is raren conditions. The company has two own factories, where they produce the whole variety of boilers – from solid fuel to electric ones.

How to choose a floor gas boiler, how to calculate power

Natural or liquefied gas

  •  The first thing to think about is not the brand of the boiler, but what type of fuel is most common in your area, how cheap it is and whether it is easy to get it. It is best to choose a model that can run on both methane and propane.

Single-circuit or double-circuit?

  •  If you want to use the boiler only as a means of heating and nothing else, then the best option is a single-circuit one. Such boilers are easy to install, maintain and manage, their design is simple, their dimensions are compact compared to double-circuit counterparts. If hunting is also warm water, you can theoretically connect a flow-through boiler, but you will have to pay extra for this.

  •  And if you want to have a full-fledged hot shower in a country house, then the right choice is a double-circuit boiler. One of the circuits goes to heating, and the second to hot water.


  •  It's one thing – a country house, where someone is always there. Another thing is the dacha, where the owners come only on Sundays. In the latter case, you need a non-volatile device with high autonomy, which is able to work on its own for a long time, in the case of power outages. However, it is important to remember that for the circulation of the coolant in the heating circuit, a circulation pump is required, which must also be provided with autonomous energy during a power outage.

Heat Exchanger

  •  If you plan to leave this boiler to your children and grandchildren, you will have to think about buying a model with a cast-iron heat exchanger, the life of which is at least a quarter of a century. Of course, if you use it correctly.

  •  A heat exchanger can be made from a variety of materials, but three are most commonly used.

  • Copper, although the best in terms of thermal conductivity, is expensive and wears out quickly, so it is rarely used.
  • Cast iron are considered the most indestructible. However, cast iron has a weak point – vulnerability to temperature changes.
  • Steel heat exchangers, although less capricious and weigh much less than cast iron, however, serve less, can rust or burn out.


  •  Here the main parameter is the type of burners. If the burner is single-stage, then it is impossible to regulate the degree of heating – it will always be maximum. A two-stage burner has more options – full or half power. Modulating burners are the most advantageous here: they can work with an intensity from 10% to a maximum, and the adjustment is not on a scale, but smooth.

High temperature or condensing?

  •  High temperature boilers are great for radiator heating at home; after heating, the temperature of the coolant reaches 40-50 °. For condensing boilers, the carrier temperature can be below 40 °, but such boilers consume gas more economically. This type reveals all its strengths if the house is warmed up with warm floors.

  •  Alas, savings in one cost in another – a condensing boiler requires a neutralizer tank, into which diluted (1:10) acid condensate will fall, and it also costs more.

How to choose the right power

  •  Here you need to take into account several factors: the area of \u1b\u10bthe house, the height of the ceilings, the walls – how thick they are and what they are made of, whether there is insulation and what kind it is, where exactly the boiler will be located, and so on and so forth. The simplest and most primitive calculation is 2 kW per XNUMX mXNUMX. For accurate calculations, it is better to contact a specialist.

Boiler placement

  •  Floor boilers are available with a capacity of up to 100 kW or more. Please note that if a boiler with a capacity of more than 60 kW, then it needs a special room, equipped in accordance with all fire safety rules.