Gas floor-standing boiler, selection criteria. Top 10 best floor-standing gas boilers for heating a private home

Choosing a boiler for a heating system is an important and responsible procedure that determines the microclimate of the house for the coming years.

Errors in this matter are unacceptable, but most users do not have sufficient knowledge on this topic.

You need to clearly understand the design features of gas boilers and be able to determine the most successful parameters and set of functions.

Sales consultants often try to sell stale goods and give distorted information, so it is useful to have some information about the most important aspects.

Let's consider one of the most effective and popular groups of heating gas boilers - floor-standing models

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Single-circuit and double-circuit floor-standing boilers

The basic function of any boiler is to heat the coolant for the heating circuit. All models have it, regardless of what additional capabilities they have .

There are units designed only for the preparation of coolant. These are single-circuit boilers that perform a single, main task. In addition, there are double-circuit boilers that can simultaneously prepare hot water for domestic needs while heating the heating agent.

They are equipped with an additional heat exchanger, which uses part of the excess thermal energy of the coolant.

These units are called dual-circuit. They allow you to get the maximum range of functions, but have some limitations in the performance of the DHW circuit.

Heating occurs in a flow mode, so it is not yet possible to achieve a uniform and stable temperature.

NOTE!

Single-circuit boilers can be connected to external storage boilers. This will require some expenses, but as a result it makes it possible to obtain a stable and even hot water supply.

Ferroli gas boilers

At the moment, Ferroli products are in great demand throughout Europe. This result was due to the high quality and affordable cost of manufactured goods. The company's enterprises produce electric wall heaters, floor heating units and gas boilers. The buyer has a huge range of units, including nine current series. Due to consumer requirements, there are two and single-circuit models equipped with completely different heat exchangers. These include ordinary plate exchangers and designs of three tubes with a coil. The next criterion that you should pay attention to when choosing is the combustion chamber. They come in two types:

1. Open - such systems have a chimney;
2. Closed - the boiler is equipped with a special pipe through which harmful gases are removed.

The long service life of Ferroli boilers is influenced by the composition of the construction materials. The burner injection rod is made of stainless steel, and the combustion chamber is covered with a dense aluminum layer. The boilers are quite simple to use and are controlled electronically. The system in the devices is equipped with safety components, thanks to which the operation of the boilers is completely safe. If the burner goes out, gas automatically stops flowing into the boiler. The units have a pump blocker, self-diagnostics and protection against movement, thanks to which the system will work in severe frosts.

All Ferroli products are characterized by stylish design, small dimensions, reliability, safety and low cost.

Ferroli gas boilers

Advantages and disadvantages

Advantages:

• Nine series of gas boilers;
• Huge selection of units;
• Reliability and durability of the system;
• Simple controls;
• Availability of a safety system.

Flaws:

• Low level of efficiency.

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.

Gas boilers "Buderus"

The manufacturer Buderus is considered one of the most affordable on the domestic market, as it has located its production capacity in Russia. Thanks to this, high-quality equipment in the form of gas boilers is affordable for every consumer. The models of the German company are perfectly adapted to Russian communication systems and function even in the harshest weather conditions. The Buderus assortment includes a wide variety of models, fundamentally different in size, design and technical characteristics. The company produces wall-mounted boilers, which have lower power and are produced under the name “Logamax”. This option is more suitable for residential premises with a small area. Floor-standing units, in turn, produce more power (20-250 kW) and come out with the name “Logano”. Boilers equipped with a closed combustion chamber emit decomposition products to the street, thereby simplifying system maintenance.

The main advantages of Buderus products are ease of use, safety in operation and silent operation. If the consumer is looking for high quality at a reasonable price, these boilers are the best option.

Gas boilers "Buderus"

Advantages and disadvantages

Advantages:

• Ability to operate in harsh winter conditions;
• High power of floor units;
• Quiet operation of boilers;
• Easy system maintenance.

Flaws:

• The service network cannot provide quick service for units in the Russian Federation.

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.

Gas boilers "Bosch"

The reputation of the devices of this manufacturer has been tested over the years. Bosch boilers are capable of providing heat in the house, regardless of possible voltage drops in the network. The main advantages of the equipment include simple operation and a number of useful features. Among these is the ability to function during gas and water pressure interruptions. Due to their small dimensions and discreet design, the boilers are suitable for any interior. The units have the ability to connect to a “warm floor” system. All models of the manufacturer have a built-in three-speed pump, which provides continuous circulation of liquid. Control of the system is provided through a multifunctional display. Before going on sale, each model undergoes special inspection and testing, which guarantees safe and reliable use in the future.

Gas boilers "Bosch"

Advantages and disadvantages

Advantages:

• Ease of Management;
• Operation taking into account pressure interruptions;
• Wide selection of units;
• Support for the "Warm Floor" function.

Flaws:

• Not found

What is the difference between non-volatile and conventional boilers?

Conventional (volatile) boilers require an electrical supply, without which they cannot operate. The turbofan, circulation pump, and electronic control board require high-quality and stable power supply.

Particularly capricious are control boards, which immediately fail when the current parameters change. Manufacturers claim the ability to withstand large voltage fluctuations, but in practice this is not observed.

At the same time, volatile units have a set of additional capabilities - they can be controlled remotely, integrated into a smart home system, and programmed for some time in advance..

Non-volatile boilers do not have all these additions. They work exclusively with the help of mechanical components and parts, like a regular gas stove.

The design of such units is devoid of all unnecessary components, it is functional and therefore very reliable. In addition, owners of non-volatile boilers do not face the risk of being left without heating in the event of a sudden power outage.

Dilapidated and overloaded networks are a typical phenomenon for remote villages, so the use of independent heating systems is very valuable for many users.

Gas boilers "Viessmann"

The main advantage of these units is the optimal ratio of quality and price. Viessmann boilers have proven themselves to be reliable and functional devices. Thanks to this, the system is suitable for buyers looking for a budget option that will function properly throughout the entire planned period. The advantages of the device include high efficiency and cost-effectiveness. The manufacturer Viessmann provides its products with an intelligent control system, with which you can adjust the temperature depending on climatic conditions. There is support for the Smart Home system. It is worth noting that the boilers have a manual temperature control mode via the display. The unit system has a number of useful functions, for example “economy” and “vacation”. Manufacturers produce a huge range of gas boilers, each of which has unique characteristics and a unique design.

Gas boilers "Viessmann"

Advantages and disadvantages

Advantages:

• Advanced technologies are used to manufacture boilers;
• The optimum ratio of price and quality;
• Long service life of boilers;
• High build quality;
• Availability of environmentally friendly materials in the boilers.

Flaws:

• To obtain high efficiency, it is necessary to connect the device to a low-temperature heating system.

Types of heat exchanger materials – what to choose?

The heat exchanger is the main component of a gas boiler. The coolant is heated in it, so the parameters and design of this unit are of great importance.

For production use:

• stainless steel . This is a budget option, although the parameters of steel heat exchangers allow you to get quite effective results. Typically, such units are installed on inexpensive medium-power boilers;
• copper tube (coil) . This option is used on expensive models of gas boilers. Copper has a high heat transfer coefficient, so the effect of using such heat exchangers is very high;
• cast iron. It is resistant to mechanical and thermal loads. For the manufacture of heat exchangers, gray ductile metal is used, which is resistant to changes or different values ​​of liquid temperature at individual points. Massive units help equalize the degree of heating and soften sudden temperature changes.

Copper heat exchangers are considered the most preferable, but steel and cast iron units are also quite functional and can provide high-quality heating of the heating agent.

Gas boilers "Protherm"

The main advantage of the units from this manufacturer is the very high heating rate of the liquid. Thanks to this, the company quickly gained wide popularity in the domestic market. The safe operation of boilers also contributed to this. Protherm products meet all international standards and are equipped with fuses against overheating and overcooling of heat exchangers. In case of emergency, the system of units has a pump blocker. These boilers are designed for use in residential and industrial premises. The manufacturer's assortment includes a wide variety of types of heaters:

• Single-circuit;
• Dual-circuit;
• Supporting boiler connection;
• Functioning as a geyser;
• Turbocharged.

The last type is currently considered the safest and has a closed combustion chamber. All models of units are equipped with liquid crystal displays, which display the status of important components. The main advantage is that all the necessary components are available on the domestic market, so replacing parts is not difficult.

Gas boilers "Protherm"

Advantages and disadvantages

Advantages:

• Availability of protection against overheating and hypothermia;
• Large selection of components on the market;
• Reliability and safety when using boilers.

Flaws:

• Floor-standing models are too heavy and bulky.

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.

Gas boilers "Ariston"

Ariston devices are known to consumers for their reliability and are widely used as heating systems in industrial areas, offices, apartments and houses. The company focuses on producing a wide range of boilers, both in terms of technical characteristics and appearance. There are single-circuit models used for heating rooms, and double-circuit models that are capable of heating water. It is worth considering that floor-standing boilers are used for production areas, while wall-mounted boilers are more suitable for residential premises.

Ariston boilers have several mechanical filters installed that purify the water. The most useful feature in Italian boilers is the intelligent self-diagnosis system, which can identify serious problems in advance and solve them. Premium class boilers are especially popular among consumers - one of the types of condensing systems. A special feature of these boilers is the release of secondary heat from the heat exchangers from the flue gas as it exits the combustion chamber. This approach increases efficiency. It is noteworthy that Ariston boilers are best adapted to communication systems and weather conditions of the Russian Federation. The units operate reliably at low gas pressure and during power surges.

Gas boilers "Ariston"

Advantages and disadvantages

Advantages:

• Availability of independent diagnostics in the boiler system;
• Availability of premium condensation class;
• A huge selection of units on the domestic market.

Flaws:

• To eliminate pressure surges, additional adjustment units must be installed.

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.

Gas boilers "Baxi"

Baxi is a widespread manufacturer that produces high-quality equipment for organizing heating systems and supplying hot water. The company's assortment includes products that are suitable for installation in both industrial and residential premises. The main advantages of Baxi boilers include:

• Ability to program the system for a long time;
• Availability of self-diagnosis, which automatically detects emergency situations and corrects them;
• Protection against overheating and freezing of the heating system;
• All boilers are manufactured with different combustion chambers and are equipped with an electronic modulation function;
• There is built-in automation that responds to climate change.

The manufacturer produces units with four combustion chambers: open, closed, turbocharged and condensing. The last two types have the highest level of efficiency. It is worth emphasizing that Baxi boilers have decent quality and reasonable prices.

Gas boilers "Baxi"

Advantages and disadvantages

Advantages:

• Large selection of functions;
• Wide range of units;
• Reasonable prices and good quality;
• Reliability and safety during use;
• Availability of manual programming.

Flaws:

• Some models with an open combustion chamber are not equipped with a chimney.

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.

Gas boilers "Immergas"

The units of the Italian company have always been famous for their durability, reliability and versatility. For more than thirty years, the company has been manufacturing wall-mounted gas boilers, which are gaining more and more popularity among domestic consumers. At the moment, there are about 80 different models, each of which differs in appearance, dimensions and functions. Users often emphasize the ease of use of Immergas units. Starting from the initial stages of development, all boiler components undergo special testing for strength and wear at test sites. The vast majority of units have the ability to be electrically ignited and have frost protection. The boilers have the ability to connect room thermostats. The circulation pump is equipped with special protection that helps prevent jamming during operation. The boiler system has self-diagnosis, which displays all information on the liquid crystal display. It is worth noting that immergas units are a high-quality product that guarantees long service life and safety.

Gas boilers "Immergas"

Advantages and disadvantages

Advantages:

• The widest range of models;
• Multifunctionality of boilers;
• Availability of protection against jamming in circulation pumps;
• The units are easy to use;

Flaws:

• High cost of production.

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.

Gas boilers "Vaillant"

This product has earned its reputation due to its affordable price and high quality. Among buyers with an average budget, Vaillant boilers are a universal solution for connecting a heating system and water heating. The company's product range includes floor-standing and wall-mounted boilers. Floor-standing ones are distinguished by a high level of power, efficiency and minimal emissions of harmful substances. Mounted boilers are notable for the fact that they are installed in any convenient place, and not just in specially designated areas. The manufacturer produces both double-circuit and single-circuit gas boilers. Double-circuit units (VUW) are designed to simultaneously heat a room and supply hot water. Single-circuit (VU) units can only operate as a heating system. There are also turbocharged boilers - the most reliable and functional, operating with a closed combustion chamber.

Vaillant devices do not require constant human intervention, since all systems are adjusted automatically. All boilers are equipped with the necessary sensors and pressure regulators that stop the operation of the system in the event of a gas supply interruption. The efficiency of devices from this manufacturer is 94%.

Gas boilers "Vaillant"

Advantages and disadvantages

Advantages:

• Availability of safety sensors in the boiler system;
• High quality of Vailant products;
• High level of power and efficiency of units;
• Good selection of boilers.

Flaws:

• There is no chimney in atmospheric models.

Rating of TOP 10 floor-standing gas boilers

Let's look at the features of some of the most popular models of floor-standing gas boilers:

Protherm Wolf 16 KSO

The company from Slovakia produces a wide range of gas boilers. The Volk 16 KSO model is a single-circuit boiler with a capacity of 16 kW. It can successfully heat a house of 160 square meters. m .

The boiler heat exchanger is two-pass, made of stainless steel.

Main settings:

• Efficiency - 92%;
• coolant temperature - 30-80°;
• system pressure - up to 1 bar;
• gas consumption - 2.1 m3/hour;
• dimensions - 390x745x460 mm;
• weight - 46.5 kg.

All series of Protherm boilers are named after various animals. By their appearance, you can determine whether a given model belongs to a specific equipment group.

Lemax Premium-12.5

Floor-standing single-circuit gas boiler made in Russia. With a power of 12.5 kW, it is capable of heating rooms up to 125 sq. m. m.

Main characteristics:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 bar;
• gas consumption - 1.5 m3/hour;
• dimensions - 416x744x491 mm;
• weight - 55 kg.

Non-volatile units make it possible to increase operational reliability and relieve concerns about the safety of heating in the winter.

Lemax Premium-20

Russian floor heating boiler. The power of the unit is 20 kW, making it a good choice for owners of houses up to 200 sq.m.

A non-volatile boiler with a steel heat exchanger has the following parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 bar;
• gas consumption - 2.4 m3/hour;
• dimensions - 556x961x470 mm;
• weight - 78 kg.

Single-circuit non-volatile models have the simplest design possible, which increases the reliability and stability of their operation.

BAXI SLIM 1.230 iN

Italian engineers have developed a high-quality and productive model of a floor-standing gas boiler with a capacity of 22.1 kW. This allows the unit to heat an area of ​​up to 220 square meters. m .

• Efficiency - 90.2%;
• coolant temperature - up to 85°;
• system pressure - up to 3 bar;
• gas consumption - 2.59 m3/hour;
• dimensions - 350x850x600 mm;
• weight - 103 kg.

BAXI boilers belong to the group of elite heating equipment and are one of the leaders in European heating technology.

Lemax Premium-25N

Another representative of domestic heating equipment, manufactured in Taganrog. This is a single-circuit, non-volatile gas boiler designed for floor mounting.

Its parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 bar;
• gas consumption - 3 m3/hour;
• dimensions - 470x961x556 mm;
• weight - 83 kg.

The warranty on Lemax boilers lasts 36 months, which increases the technical support of the manufacturer by one and a half times and allows the user to receive specialized repairs or maintenance of the units.

Siberia 11

Rostov products. The power of this floor-standing energy-independent unit is up to 11.6 kW , allowing you to heat a house up to 120 sq. m.

All controls are mechanical; a power outage will not affect the heating system in any way.

Boiler parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 bar;
• gas consumption - 1.18 m3/hour;
• dimensions - 280x850x560 mm;
• weight - 52 kg.

The company's arsenal includes single- and double-circuit models of boilers of this series.

MORA-TOP SA 20

Czech floor-standing boilers with a cast iron heat exchanger provide high reliability and stability of home heating. The MORA-TOP SA 20 model has a power of 15 kW and is designed for operation in rooms up to 150 sq. m. m.

Boiler characteristics:

• Efficiency - 92%;
• coolant temperature - 85°;
• system pressure - up to 3 bar;
• gas consumption - 1.6 m3/hour;
• dimensions - 365x845x525 mm;
• weight - 99 kg.

The heat exchanger design is sectional and consists of 3 compartments. The boiler is non-volatile, but is equipped with two types of pipes - for natural and forced circulation .

Lemax Premium-10

Floor-standing non-volatile gas boiler with a power of 10 kW. of heating a house up to 100 sq.m.

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 1 bar;
• gas consumption - 1.2 m3/hour;
• dimensions - 330x748x499 mm;
• weight - 48 kg.

The boiler is single-circuit, all controls work on a mechanical principle.

Lemax Premium-16

Floor-standing gas boiler, designed to service the heating system of a private house up to 160 sq. m.

Its power is 16 kW, other parameters:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 3 bar;
• gas consumption - 1.9 m3/hour;
• dimensions - 416x744x491 mm;
• weight - 55 kg.

This model is one of the most popular on the market, since its power is optimal for most private homes.

Lemax Clever 30

Single-circuit floor-standing gas boiler. Its power is 30 kW, which allows you to heat 300 sq. m. usable area. The unit is volatile, has electronic control and a comprehensive protection system.

Characteristics:

• Efficiency - 90%;
• coolant temperature - 90°;
• system pressure - up to 2 bar;
• gas consumption - 1.75 m3/hour;
• dimensions - 470x961x556 mm;
• weight - 85 kg.

The power of the unit is excessive for one residential building, so owners often buy such boilers together and use them to operate in 2 systems.

Summary table of gas boiler manufacturers

Gas boilers "ATEM"

The Ukrainian manufacturer of gas boilers occupies one of the leading positions among companies producing heating systems in the domestic market. All this is deserved thanks to the huge selection of units, numbering more than 80 different models with power from 2 to 200 kW. The manufacturer has both floor-mounted and wall-mounted boilers, with single and double-circuit types. During production, specialists develop new techniques and conduct various tests in order to create new technologies and improve existing ones. The burners in the units are made of stainless steel, thanks to which the efficiency is 94%. The material used for heat exchangers is high-altitude steel with an anti-corrosion coating, which contributes to a long service life.

Italian automatic components are used in the design of the devices. This indicates the reliability, safety and efficiency of heating equipment. The interior of the housing is insulated with basalt fiber, providing the best level of insulation. Thanks to this layer, heat is retained in the system longer, and the efficiency of the boiler is significantly increased. The units are quite simple to operate; for this purpose, there are special programmers, with the help of which the required temperature is set. Each model has an attractive appearance, so you don’t have to worry about a bulky boiler ruining the interior. It is also worth noting that ATEM equipment is environmentally friendly.

Gas boilers "ATEM"

Advantages and disadvantages

Advantages:

• Wide range of equipment;
• Reliability and safety of heating systems;
• High level of insulation of the inside of the case;
• Easy to use;
• Environmentally friendly materials in boilers.

Flaws:

• Fuel consumption can hardly be called economical.