TOP 15 best floor-standing gas boilers: Rating 2021-2022 and which double-circuit or single-circuit model to choose for heating a private home

If a gas main is connected to the house, you can choose a gas boiler without further hesitation: this is the most profitable, least labor-intensive and completely autonomous option for organizing heating. Floor-standing models are heavier, relatively simple and reliable; they can be equipped with a durable cast-iron heat exchanger with a service life of more than 30 years. They can work with almost any coolant.

In this material, we tried to describe in as much detail as possible all the criteria and nuances of choosing a floor-standing gas boiler, and gave examples of the most successful, efficient and best price-quality ratio household single-circuit and double-circuit floor-mounted gas boilers for 2020.

Rating of the TOP 15 best floor-standing gas boilers for a private home for 2021-2022

Selection of coolant

Usually two options are used:

• water. Experts recommend using distilled water if the volume of the system allows it. This method avoids the formation of lime deposits, but it will not protect against freezing of pipes in winter;
• ethylene glycol (antifreeze) . This is a liquid that does not freeze when circulation stops. Contains a set of anti-corrosion additives, does not form scale, and does not have a destructive effect on polymers, rubber, and plastic.

For systems that need to be drained frequently, water is the best and most economical choice. The use of antifreeze is recommended for heating circuits that operate under difficult conditions.

How to choose a floor-standing gas boiler?

Focus on the following parameters:

• Power. An average power reserve will allow the boiler to last not 1 or 2 years, but significantly longer. Add 25% to the optimal power indicator, and the result will be the very figure from which you should build.
• Material of manufacture. Gas boilers made of cast iron last the longest. But get ready to shell out a hefty sum for such a boiler.
• Device type. A condensing boiler is cheaper and more economical.
• Control. Choose a model with manual temperature control: sooner or later you will want to choose the appropriate indicators yourself.
• Safety. The boiler must have protection systems: gas control (which turns off the unit if there is a gas leak), protection against hypothermia and overheating.

Convection or condensation?

The traditional method of heat transfer from a gas boiler is heating the coolant in flow mode. It passes through a heat exchanger, and the gas burner heats the liquid according to the specified operating mode.

This type of boiler is called convection boiler. Relatively recently, a new design of units appeared - condensing. It uses preheating of the coolant from the heat released during condensation of the exhaust smoke.

The temperature of the liquid increases by a small amount, but this is enough to reduce the heating mode of the main heat exchanger.

As a result, a positive effect is achieved:

• fuel consumption is reduced;
• the load on the burner and heat exchanger is reduced;
• The service life of the boiler increases.

With properly organized operation of the unit, fuel savings reach 20%. However, there are some specific conditions that sharply limit the scope of application of condensing boilers.

The reason is that the condensation process can only occur when the temperature of the walls of the condensation chamber is higher than the return flow temperature. This is only possible on underfloor heating systems or radiator circuits with a low degree of heating.

It is calculated that the operation of the first stage is possible only if the difference between the outside and inside of the house is no more than 20°. For Russia, such a ratio is simply impossible. If condensation is not possible, the boiler operates as a conventional convection model.

Considering the almost twofold difference in prices, one should weigh the feasibility of such an expensive purchase with its dubious effectiveness.

The best manufacturers of gas boilers

The reliability and quality of heating equipment directly depend on the brand. The most famous manufacturers of gas floor-standing boilers are the following companies.

• Lemax is a Russian manufacturer of heating equipment from Taganrog. Gas heaters from this company are highly reliable and affordable.
• BAXI is an Italian manufacturer of heating equipment. The history of the company dates back to 1924. The products of this brand are of the highest quality, confirmed by various international certificates.
• Protherm is a manufacturer from Slovakia. The brand is relatively young, however, thanks to the quality of its products, it is among the top manufacturers of heating equipment. The company belongs to the German giant Vaillant Group. To improve product quality, it uses the “one boiler – one master” assembly technology.
• MORA is a Czech company that is part of the Gorenje Group corporation. Its history begins in 1825. During this time, it has established itself as a first-class manufacturer of heating equipment.
• Pechkin is a manufacturer of heating equipment from Russia. The company is located in the city of Taganrog. The products of this company are highly reliable and unpretentious.

Advantages and disadvantages

The advantages of floor-standing boilers include:

• no restrictions on the power of the unit;
• strength, reliability of all components and parts;
• ease of installation;
• stability of operation, the ability to maintain a given mode regardless of external conditions;
• no unnecessary additions;
• powerful models can be connected in a cascade of up to 4 units, forming high-performance thermal units.

The disadvantages of floor structures are:

• large weight, size;
• the need for a separate room;
• for atmospheric models it is necessary to connect to a common house chimney

IMPORTANT!

In addition to a separate room, for floor-standing boilers it is necessary to ensure the possibility of connecting to a vertical chimney or leading a horizontal pipe through the wall.

Customer Reviews

Oleg K.

Lemax Premium-16

Italian boiler automation Lemax Premium is a guarantee of a long service life of the boiler without failures or problems. Modern boiler protection - gives complete confidence that its protection will work in the event of overheating, interruption of draft, soot formation or blowing out of the boiler. The boiler does not depend on electricity - this is the ability of the boiler to operate when the electricity is turned off. All these indicators are important to me, so I installed a Lemax Premium boiler and in 2 years I have not regretted my choice at all!

Evgeny A.

BAXI SLIM 1.230 iN, 22.1 kW

Pros: Well made! Will fit into any interior if there is no boiler room. There is access from all sides. Cast iron! Working with an indirect heating boiler. Disadvantages: It is inconvenient to connect the upper supply pipe. The thread is also internal. Doesn’t keep the flame on the socket, constantly ignites it... resulting in unusually audible popping noises every time it starts.

Ivan Chirkov

Lemax Premium-10

I installed Lemax Premium at the end of last summer. Just a couple of years ago I wouldn’t have even looked at it. Before it there was an expensive but popular unit. And I understand very well those who say that Europe is doing great. Yes it is. And when everything is fine with your expensive boiler, you live and don’t give a damn. But as soon as problems appear, that’s it. Do you know how much it costs to change a heat exchanger or automatic ignition? Yes, it’s easier to install a new boiler. I had no illusions about Lemax, but at least I knew that if something happened they would help me, our service technicians know our products better and spare parts are always within easy reach. That's why I took the course that it would be cheaper to maintain. There is little to say about the boiler itself yet. It works and doesn't make any noise. At first I was confused by the condensation that appears when it warms up to 50 degrees. But the support service assured that this was normal for such a temperature, and I myself later saw in the passport that this was written. Pah-pah, let it continue to work.

Roman Belov

Lemax Premium-20

I tried to find a powerful and compact gas boiler. For my 180 square meters (2 floors and an attic) I picked up Lemax-premium for 20 kW. During the first heating season, it seemed that I paid a lot on gas. It’s easy to control: I set it to 5-6, that is, up to 80 degrees. The boiler was ticking. But it was warm. This season I thought about saving, but the craftsmen shrugged their shoulders, saying the settings were correct. Only the neighbor came up with the idea to insulate the walls so that the warmth would remain inside. When I had already completed 2 rooms, less gas began to escape.

Klochkov Oleg

Siberia 17, 17.4 kW

An excellent boiler for the money, very heavy, more than 50 kg, which speaks of the thickness and durability of the heat exchanger steel. Piezo ignition, flame control, maintaining and regulating the set temperature using the best Italian mechanical automation. With a well-made heating system, this boiler will last a lifetime, which will not have to be repaired or even maintained.

Elena S.

Lemax Premium-10

Problems with commissioning initially spoiled the impression of Lemax. The burner went out, it was an infection. I later found out that it was due to pressure. I called the Lemax hotline, and that’s what they answered. And it seems like the gas pressure is written down in the passport, right? But the gas was still not adjusted properly, the pressure was lower, the burner went out. And so I chose a simple boiler without unnecessary automation, so that no power surges would “eat up” my brain, but here is such a setup. I had to invite the gas workers, but they screwed it up and that’s it, and it doesn’t matter that I suffered for a week

Nikolay V.

Lemax Premium-30B

Last year we selected a gas boiler for heating. We looked at more than one option and chose the Lemax Premium-30V boiler. We consulted with neighbors and gas workers. We looked on the Internet. Lemax is produced in Russia. This means they are adapted to our Russian realities, unlike imported ones. This is a floor-standing, double-circuit boiler with an open combustion chamber; combustion products are removed naturally through the chimney. It will heat the house and heat the water. Electronic control. The quality is top notch. This is confirmed by those who already use such boilers and those who service them. The boilers are reliable, and if something happens, they are repairable. Spare parts are always available and at low prices compared to imported ones. We ourselves were convinced of the quality of the boiler. Last winter, and it was frosty, he proved himself to be the best.

Lev D.

Lemax Premium-10

I installed it in the fall, at first when I started it for the first time there was something rustling inside, I thought it was a leaky heat exchanger, but everything went well - just factory paint and condensation. There was a problem: the gas went out. We figured it out - it turned out that because the exhaust pipe was made of asbestos and there was no insulation, the exhaust hood was weak and disappeared, so the automation was triggered and plus condensation formed. I insulated the pipe and the problem disappeared. For a log house of 60 m in position 3, the temperature in the house is 24 degrees while the outside temperature is -20.

Ksenia S.

Lemax Premium-30B

I specifically took a boiler from Lemax for a private home, because I already had a bitter experience with imported ones - they focus on the milder European climate, but here we have even -20, sorry. I heard only good things about the manufacturer, and a colleague advised my husband that he has Lemax, only a different model. This particular model suited us, the house is 200 m2, it is enough for him with a margin, and it is also efficient in terms of gas consumption. We haven’t regretted it even once; finally we don’t freeze in winter. It was installed for us by invited gas workers) and they did it quickly. The only thing is that it’s really, as they wrote here, a little noisy (it’s not really critical for me, but suddenly for someone it will be a problem.

Types of boilers by type of smoke removal and which one is better?

There are two options for removing combustion products:

• atmospheric. This is a traditional way of removing flue gases using natural stove draft. The technique is well studied, but is unstable and highly dependent on external conditions. Most often used on non-volatile models;
• using a turbofan . The combustion chamber of such boilers is isolated from the outside atmosphere, so the combustion process and smoke removal are ensured by a turbocharging fan. It supplies fresh air, which supports the flame and displaces smoke into a specially designed chimney (coaxial).

Turbocharged boilers are considered more convenient designs for use in residential premises - there is no smell of smoke, oxygen does not burn out, the unit is completely safe.

However, such boilers need to be connected to the power supply.

Review of the best models in terms of price-quality ratio

Lemax Premium-30B 30 kW

The Premium series boiler is a Russian unit, powerful and reliable. In the first year of its release to the market, it received a lot

flattering reviews from customers.

The controls are electronic and intuitive, capable of heating a large living area. The unit itself is dual-circuit, compact, and takes up little space. The build quality is excellent. Heat exchanger material is steel coated with anti-corrosion enamel, fuel is natural gas (flow rate - 3.5 cubic meters per hour).

There is protection (gas control), a thermometer and overheating protection. Warranty period - 3 years. This model has proven itself well in 2021-2022.

Specifications:

• Maximum thermal power: 30 kW;
• Heated area: 300 sq.m;
• Efficiency: 90%;
• Weight: 88 kg;
• Dimensions: 556x961x470 mm.

pros

• easy to buy spare parts for repairs;
• powerful;
• economical;
• no problem with cheap fuel.

Minuses

• makes noise during operation.

Lemax Premium-30N 30 kW

Single-circuit boiler with good power, packed in a steel box (steel thickness - 2 mm).

No electrical connection required. Burner - micro-flare injection POLIDORO, Italian automatics. Anti-corrosion enamel can withstand temperatures up to 950°C and does not deteriorate even under aggressive environmental influences.

The temperature regulator is fixed on the front panel of the boiler. The top panel can be easily removed. There is a gas control function. Warranty - 3 years.

Specifications:

• Maximum thermal power: 30 kW;
• The approximate area of ​​the heated room is 300 sq.m;
• Efficiency: 90%;
• Weight: 77 kg;
• Dimensions: 556x961x470 mm.

pros

• low gas consumption;
• there is enough power to spare;
• you can choose a comfortable thermal mode yourself;
• affordable;
• pleasant appearance;
• easy setup.

Minuses

• There is no protection against overheating and freezing.

BAXI SLIM 1.150 i 14.9 kW

Single-circuit floor-standing unit with average efficiency and good protective functions: gas control, air vent

, safety valve. There is frost protection, flame modulation, automatic ignition and underfloor heating.

There is a display on the front panel. The heat exchanger is made of cast iron. The combustion chamber is open. An indirect heating boiler with additional piping can be connected to the boiler.

The warranty period is 24 months. The fuel can be either natural or liquefied gas.

Specifications:

• Dimensions: 350x850x520 mm;
• Thermal power: 8.50 - 14.90 kW;
• Weight: 93 kg.

pros

• electronic control;
• reliable;
• economical;
• pressure gauge;
• pump blocking protection.

Minuses

• high price.

Boiler room area

According to regulatory documents, the size of the room for a gas boiler is determined depending on the power of the equipment. This is the indicator that determines the degree of heating of the room. Therefore, it is better to entrust its calculation to professionals. For the smooth functioning of the heating system, a specialized company develops a design and technical specifications. You can independently select the room for installing the boiler and its brand, but you cannot connect the boiler without agreement with the necessary structures.

Depending on the power of the gas boiler, the overall dimensions of the room should provide the following area:

• 7.5 m2 - with the main characteristic of 30 kW;
• 13.5 m2 - with a power within 60 kW;
• 15 m2 - more serious boilers with an output of up to 200 kW.

Navien

When the brand is important to the consumer, and the price is high enough, Korean heating equipment will come to the rescue.

The advantages of the Navien product line, in addition to the affordable price, are:

1. A specialized device in the form of a chip that monitors and regulates voltage drops.
2. Possibility of working with low pressure.
3. Remote control with display.
4. Automatic power control.
5. Compactness.
6. A two-circuit system that allows, in addition to heating, hot water supply.

Interesting models include wall-mounted gas boilers for a private home, the size of which does not exceed 240 m2. Installers call Navien Deluxe 24K one of the most attractive examples in terms of cost. Unlike more expensive models, the boiler mostly performs the same functions as branded devices, but for less money. Technical characteristics that can evoke positive emotions are:

• dual-circuit operation of the device;
• closed combustion chamber;
• temperature inside the system up to 80 degrees;
• electronic control;
• the presence of a circulation pump;
• ability to accept natural liquefied gas.

Comfortable operating conditions are achieved due to automatic ignition, the presence of a thermometer, remote control and room temperature meter. Security is ensured by 6 additional options. The compact size of the gas boiler - 440 x 695 x 265 and low weight make installation and subsequent maintenance of the presented model easier.

"Conord"

The manufacturer talks about the competitiveness of its product and at the same time warns buyers about special installation rules:

1. On mandatory approval of the project with specialized organizations.
2. During installation work, it is necessary to achieve uninterrupted water circulation by placing the lower pipe below the level of the radiators.
3. When connecting to a heating system by welding, it is recommended to leave the threaded connections for subsequent dismantling for repair purposes.
4. The equipment must be installed on a fireproof covering that exceeds the dimensions of the gas boiler by 50 cm in all directions.
5. It is necessary to ensure the removal of combustion products through vertical risers or maintaining a slope when they are horizontal.

In addition, the general installation rules approved for all types of heating equipment cannot be neglected.

Experts call the floor-mounted single-circuit boiler KSts-G10 a popular model of domestic production. Among the advantages of the model, experts call the low cost and note a number of additional bonuses in the form of:

• Efficiency 90%;
• thermal power from 10 kW;
• maximum gas flow 1.2 m3/h;
• light weight;
• the presence of automation capable of modulating the flame;
• permissible pressure up to 5 atmospheres;
• ease of installation and maintenance.

A special feature of this specimen is also called the acceptable dimensions of a gas boiler for a private home. However, installation of equipment of this kind in an apartment is not permissible due to the impossibility of hanging the sample on the wall.

ZhMZ

The plant produces 5 series of gas boilers: “Beetle”, “Comfort”, “Universal”, “Economy” and “Economy Plus”. The last two series are represented by 3 options, and the popularity of the AOGV-17.4-3 model is very high due to the excellent combination of affordable equipment cost and long-term reliability. As the name suggests, the power of the unit corresponds to 17.4 kW, and the area to be heated should not exceed 150 m2. A floor-standing single-circuit boiler does an excellent job of heating a small private house. The boiler's weight of 47 kg and dimensions of 1200 x 456 x 458 mm do not cause any particular difficulties during transportation and installation of the product.

The brand has proven itself due to its use in boilers:

• technology for seamless welding of the heat exchanger tank;
• automation units that ensure safety and ease of use;
• a simple burner that can be replaced and is not difficult to clean;
• overheating sensor;
• room thermostat.

Types by combustion chamber type

There are two types of combustion chambers:

• atmospheric (open) . They work on the traditional principle - air is taken directly from the surrounding atmosphere, and smoke is removed using natural draft. For the operation of such boilers, appropriate conditions are required, so they are not in great demand. However, atmospheric units are capable of operating in energy-independent mode;
• turbocharged (closed) . The fully sealed design requires air supply, which is done using a turbofan. This method allows you to regulate the combustion mode and the removal of combustion products. It is considered the most convenient and safe.

The choice of combustion chamber is determined by the design of the boiler - all non-volatile models are atmospheric, and dependent units can be either open or closed.

Turbocharged vehicles are preferred.

Product installation requirements

The main indicators that determine the possibility of installing a heating device in a particular room are:

• preventing combustion products from accumulating in the room;
• no smoke;
• prevention of emergency situations including fires.

When a gas boiler is operating, the dimensions of the boiler room or other room with equipment are regulated by SNiP. The same standards establish fire safety, which is ensured during installation in compliance with the following rules:

1. The distance from floor to ceiling should not be less than 2.5 meters.
2. The installed hood carries out three air exchanges.
3. It is necessary to have a window with an area allowed by the standards.
4. The door must be equipped with a lower grille or replaced with another sample with a gap to the floor of 0.025 m2.

It is not permitted to dismantle a previously installed door and replace it with arches or curtain structures.

Types of boiler ignition methods and which method is the most optimal?

There are three ignition options:

• electronic. The burner is ignited at the touch of a button using a special unit. This option is present on all models of volatile boilers;
• piezoelectric. The principle of operation of such a system is similar to all piezo devices - in order for a spark to appear, you need to press on a special crystal. Used on non-volatile boilers. Many users find this type of ignition inconvenient;
• manual. The flame is ignited with an ordinary lit match (spear). For ignition, you need to have a certain supply of such elongated wooden sticks.

Most users unanimously prefer the electronic type of ignition, but it is not possible on non-volatile units. You have to get used to using a piezoelectric element or ignite the burner with a burning torch.