Bimetallic radiators. Bimetallic heating batteries Bimetallic heating batteries what

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Today, the market for bimetallic radiators is represented by manufacturers from such countries as:

Russia is famous for its good total power of sections up to 200 Watts.

Italy - in demand due to the build quality, reliable materials and a very long warranty on products.

Germany is characterized by high operating temperatures and pressures.

China - represented by models with an optimal price-quality ratio.

These are the manufacturers that appear in our rating, based on customer reviews. The presented devices also answer the question: which ones are better for a private home.

Brand	Manufacturer country	Warranty, years	Characteristics in the rating
Global	Italy	25	High build quality. Buyers' choice.
Sira Group	Italy	20	Better heat dissipation. Quiet operation.
Royal Thermo	Italy	25	Excellent heat dissipation.
Fondital	Italy	20	Premium segment in terms of quality and cost.
Rifar	Russia	25	The best ratio of price and quality.
Radena	Italy. China.	15	Minimum coolant volume per section. The optimum ratio of price and quality.
Warma	Russia. China.	10	Increased strength. Manufactured according to GOST.
Könner	Russia. China.	15	Increased anti-corrosion resistance of the metal and high strength.
Tenrad	Germany	10	German quality.
Rommer	Russia. China.	5	Minimum defects. Long service life.
Lammin	Finland. Russia.	7	High-quality filling and neat appearance. Very durable coating.
Gordi	China	10	Optimal price/quality ratio.

Bimetallic heating radiators: the best companies

Radiators from Global.

The Italian company Global was founded by the Fardelli brothers in 1971, at the very beginning of the emergence of the aluminum radiator. Over almost fifty years of history, the company has grown from a small workshop to a large production plant producing not only aluminum batteries, but bimetallic radiators.

The company has its own testing laboratory, in which all raw materials entering the enterprise are subject to strict quality control. We are constantly developing new models and improving the technical and operational characteristics of existing product samples. What gives them the right to give on their products 25 year warranty!

GLOBAL sells about 20% of its products in Italy itself and exports about 80% to Western and of Eastern Europe, as well as to the CIS countries and other countries of the world. The wide distribution area of ​​GLOBAL radiators indicates the great trust of customers in the brand.

Bimetallic radiators from Sira Group

The Sira Group, created in Italy over 50 years ago, is a pioneer in the production of bimetallic radiators. After all, the first such radiator was released in 1961, and the patent was received by this Italian company. The main office of the company is located in Italy, and production sites are located in many countries around the world. The design of Sira radiators contributes to resistance to pressure changes and high heat transfer, which makes these heaters and the entire heating system reliable. By purchasing a product from this brand you get 20 years warranty.

Royal Thermo

These radiators are created by an Italian company. Leading scientists from Russia are working on the project together with Italian developers. Over half a century of its existence, the company has been constantly improving its products, improving their technical and operational characteristics.

The model of each collection is distinguished by a unique design, patented innovative technologies, impeccable workmanship and high operational reliability. The radiators are available in three basic colors - white (Bianco Traffico), black (Noir Sable) and silver (Silver Satin).

Fondital

The Fondital company was founded by Silvestro Niboli in 1970 in the city of Weston, Italian province of Brescia, and since its inception has been engaged in the design and production of heating systems. Over its half-century history, the small enterprise has grown into a large company with several large production facilities under its own brand. Today it is a dynamically developing company, whose products are well known to many consumers around the world. High-quality equipment and the constant production of new products, coupled with a realistic assessment of the market and its development course, make the company competitive.

Rifar

The manufacturer of this equipment is the Russian company Rifar, which has reliably proven itself in the market for such products. The company gives 25 year warranty for your products. Its production facilities are located in Russia. In its work, the company constantly uses innovative technologies, introducing them into production; the development of radiators was carried out jointly with the best engineers in Italy.

Bimetallic heating devices of this company are equipped with an internal monolithic collector made of steel and housed in an aluminum housing. Batteries are produced with bottom and side connections, in three sizes.

Radena

An Italian company whose office, design bureau and testing laboratories are located in Italy, but the products themselves are manufactured again in China, at the WANGDA Group plant, under the close supervision of Italian specialists.

This brand of radiators has decent quality. The products have been presented on the Russian market since 2010, and during this time they have gained wide popularity, despite the relatively high price. This is explained by the fact that buyers are attracted by the quality and reliability of these radiators.

The center distance used is from 150 to 500 mm. Most models are perfectly suited for Russian operating conditions in a central network, under the technical guidance of Russian engineers.

Warma

A Russian-Chinese company whose production facilities are equipped with high-quality European equipment. All produced radiators comply with GOST 31311-2005. The batteries of this company are used for both autonomous and central heating systems. The steel core of these radiators is made of carbon steel - its vertical channel has a wall thickness of 2 mm and inner diameter 20 mm, and the thickness of the steel of the horizontal collector sections of the sections is 4 mm.

Könner

Radiators are made of high quality aluminum and steel. The radiator manifolds are made entirely of steel, which allows aluminum to be protected from exposure to environments that steel is resistant to. Thus, the service life and resistance to water hammer of such a radiator is much longer than that of radiators that are lightweight for the sake of economy. . KONNER radiators are distinguished by the highest quality of surface treatment and painting.

Tenrad

TENRAD Heizung und Sanitar Armaturen GmbH is a company founded in 2005 by Sebastian Tengler and Paul Radenfeld (the first three letters of the founders' surnames formed the name of the company), young employees of the Faculty of Civil Engineering of the Technical University in Dresden (Germany). A German company placing orders for production in China. All products undergo quality control; adherence to technological discipline, ensuring the highest quality of products, is guaranteed by leading specialists from TENRAD who are constantly present at the plant.

Rommer

The Rommer radiator production plant is located in Yongkang, Zhejiang Province, in eastern China. Control is carried out by an official Rommer representative, who is always at the production site and is responsible for ensuring that each radiator meets the established requirements

Lammin

The Lammin company has been operating since 1989 and initially specialized in the complex design of water radiator heating systems.
During the first 5 years the company was engaged in designing, completing and organizing installation work at large engineering facilities in Europe and Asia.
Since 2000, the accumulated experience and increased financial capabilities have allowed the company to invest in production workshops and laboratories to create an engineering office. Even at the beginning of their activities, specialists from our engineering bureau took part in the development of heating equipment for several brands, which to this day are considered the premium segment and are in wide demand in the markets of Europe and Asia.

Today Lammin is high tech, aimed at developing all kinds of complex equipment, automatic and semi-automatic production lines and machines for various fields of activity.

Gordi

Gordi radiators are manufactured in China. Available in two versions - bimetallic (steel plus aluminum) and all-aluminum. The entire model range belongs to the middle price segment.

What are the best bimetallic heating radiators to buy?

The most popular and best-selling radiators in our country are heating devices with a center distance of 500 mm. It is in this category that our rating is compiled. best batteries heating.

One of the best bimetallic radiators made in Italy. Certified quality, with maximum heat transfer. We definitely recommend purchasing.

Advantages:

The inner part, which is in direct contact with water, is made entirely of steel, and the outer layer is made of aluminum

Working pressure up to 3.5 MPa (35 atm)

Pressure during hydraulic tests up to 5.25 MPa (52.5 atm)

Destructive pressure over 6.2 MPa (62 atm)

Flaws:

They heat poorly if the temperature of the coolant (water in the radiators) is less than 100 degrees, compared to panel radiators.

Italian premium quality. The unusual rounded design will not leave anyone indifferent.

Advantages:

Withstands sudden changes in pressure and temperature that often occur in our heating networks.

High heat transfer rate of 1 section - 199 W

20 year warranty

Working pressure - 40 bar

Coolant temperature up to 110°C

Flaws:

High price

The top three is also completed by a purebred Italian with an extraordinary design.

Advantages:

Absolute brand guarantee of 25 years

Additional fins on the vertical section manifold increases the heat transfer of the radiator by 5%

The unique design of the device with an asymmetrical arrangement of sections provides the 3D Heating effect, increasing the heat transfer of the radiator by 5% due to front convective windows

The use of only all-steel manifolds guarantees reliable operation in systems subject to water hammer and with chemically aggressive coolants

Ultra-resistant 7-stage NANO painting TECNOFIRMA®

Flaws:

High price

And again the Italian with its innovative technology can be used in mixed heating systems consisting of various structural materials, both in residential, industrial and public buildings.

Advantages:

Good heat dissipation of 1 section 191 W

20 year warranty

Working pressure 40 bar

Can be used with different coolants

Radiators Russian made. The sections are connected using innovative domestic technology of flash-butt welding.

Advantages:

Suitable for use in aggressive environments

25 year warranty

No center joints

Operating coolant pressure - up to 30 atm

Flaws:

Serially produced from 4 to 14 sections, without an even number of 5 and 7 sections

high price range for domestic producers

Radiators jointly produced in Italy and China. Full bimetallic radiators with carbon steel frame.

Advantages:

Increased strength and reliability

Coolant temperature up to 110°C

Low cost

Flaws:

Working pressure up to 25 atm

Advantages:

Absolute 15 year guarantee

Increased power, POWERSHIFT technology.

New generation all-steel manifold

Maximum operating pressure up to 30 Bar

Relatively low cost

Flaws:

Weak heat dissipation of 1 section 168 W

One of the most powerful among bimetallic radiators, which makes it a priority when choosing radiators for heating large and poorly insulated rooms.

Advantages:

Excellent heat dissipation of 1 section 197 W

Coolant temperature up to 135°C

Increased corrosion resistance

Flaws:

It is allowed to use only specially prepared water

The model was developed by leading engineers of the Russian Federation, which guarantees reliability, durability and high thermal conductivity.

Advantages:

All steel manifold

No sharp corners or edges

Flaws:

Working pressure up to 20 bar

Low heat dissipation section 143 W

Advantages:

Low affordable price

Maximum operating pressure 25 Bar

High heat output of 1 section 180 W

Maximum operating coolant temperature 110°C

Made from high quality aluminum and steel.

Advantages:

All steel manifold

High quality assembly and painting

High heat output of 1 section 190 W

Working pressure up to 30 bar

Full bimetallic heating radiators, the design of which eliminates contact of the shell metal with the coolant.

Advantages:

All steel core, heat dissipating jacket

Can be used in low temperature networks

Operating pressure 24 bar

Maximum coolant temperature 120°C

Bimetallic heating radiators: features, types, how to choose

5 (100%) votes: 3

Today, various types of radiators are used for heating the house. The most popular bimetallic batteries that combine the properties of steel and aluminum. In the article we will consider the design features, pros and cons of such batteries, and also answer the question: how to choose bimetallic Radiator?

Bimetallic heating radiators

How do bimetallic radiators work?

As already mentioned, bimetal batteries are based on two materials: steel and aluminum. The internal part of the structure (pipe), through which the coolant flows, is usually made of stainless steel (sometimes copper). This metal is very durable and does not give in negative influence aggressive environment of heated coolant.

Outer side made of aluminum and is a casing with fins. Aluminum has high thermal conductivity, warms up in the shortest possible time and the air in the room begins to warm up instantly.

Device bimetallic radiators

The inner and outer parts of each section are joined together by casting. This process is carried out under pressure or spot welding. Using steel nipples and heat-resistant gaskets that can withstand a maximum temperature of no more than 200°C, the sections are assembled into a battery.

The fact that in the design bimetallic The radiator contains parts made of steel, due to a number of positive characteristics that this metal has:

• steel can withstand pressure changes;
• steel is highly resistant to electrochemical influences, while internal surfaces made of aluminum quickly rust, and therefore their service life is short.

However, in turn, aluminum is characterized by high thermal inertness. On the one hand, this is an advantage, but on the other, it is a kind of disadvantage. Aluminum surfaces react very quickly to even minimal changes in temperature. Thanks to this property, you can very quickly adjust the temperature parameters of the heated room.

Due to the high heat transfer of aluminum, less coolant is consumed, while the amount of heat released is identical to that coming from cast iron radiators. That is why the dimensions of bimetallic heating radiators are more compact, and the shapes are very attractive in appearance.

Advantages and disadvantages

By purchasing an installation made of bimetal, your heating system will be provided with many positive points:

1. First of all, it has a long service life. Thanks to the high quality of the design, which combines two good material, such radiators can operate effectively for 30-50 years.
2. Durability and reliability. These qualities are ensured thanks to the steel core, which is able to withstand high operating pressure and hydraulic shocks.
3. Bimetallic heating radiators are suitable for any heating system, even with coolant Low quality.
4. High heat transfer is another important positive quality. Due to the fact that the outer casing is made of aluminum, heat is distributed throughout the room very quickly. Standard models, in which the distance between the axes is 500 mm, have a heat transfer of up to 190 W, which is significantly more than in radiators made of only one metal.
5. Thanks to the built-in, you can control and regulate the heating temperature.
6. Externally, bimetal batteries are very attractive. Various color and design solutions allow everyone to choose a radiator to suit their taste.

As you can see, bimetallic radiators have a large number of advantages, which determine wide demand for such products. However, there are some disadvantages that cannot be ignored when choosing:

1. Different coefficients of expansion of steel and aluminum. In this regard, after long-term operation, noise and squeaks may occur in the heating circuit, and the strength of the structure will be lower.
2. During the installation of radiators in a central heating system, heat-conducting pipes can quickly become clogged. This is due to the fact that they have a small diameter. Given this feature, it is better to be careful and install a coarse filter.
3. High price of bimetallic radiators.

Types of bimetallic radiators

Radiators made of bimetal come in two types: monolithic and sectional.

Sectional ones are constructed from sections, each of which, inside horizontal pipe sections on both sides, has a multidirectional thread, through which connecting nipples with sealing gaskets are screwed in.

It is this design that is one of the most important shortcomings of bimetal batteries. The downside is that defects very often appear at the joints, for example, from low-quality coolant. As a result, the service life of radiators is reduced.

Also, in areas where sections are connected, leaks may occur under the influence of high temperatures. To avoid such unpleasant moments, another technology for the production of bimetallic heating radiators has been created. Its essence lies in the fact that initially a one-piece welded manifold is made of steel, then it is laid in special form and under high pressure aluminum is poured over it. Such radiators are called monolithic.

Both varieties have their advantages and disadvantages. We have already talked about the disadvantages of sectional ones, but their advantage is that if one section is damaged, then you just need to replace it. But if a breakdown or leak occurs in a monolithic structure, you will have to purchase a new radiator.

Let's carry out comparative analysis monolithic and sectional bimetallic radiators.

The cost of a monolithic radiator is approximately 20% higher than a sectional one.

Selection of bimetallic heating radiators

When choosing bimetallic batteries, you should pay attention to a number of criteria on which the operating efficiency will depend.

Design

As already noted, radiators can be monolithic or sectional. In order to choose the most optimal option for a specific heating system, you need to know what the operating pressure is in the system. If it is exposed to powerful water hammer, then it is better to give preference to monolithic models. In all other cases, it is recommended to purchase sectional ones, since they are much cheaper.

To purchase a more reliable device, you should know that there are two types. The first type is made of a steel frame, the other is equipped only with steel-reinforced channels through which the coolant moves.

Batteries belonging to the first type are characterized by greater strength and reliability. In such designs, the coolant does not come into contact with the aluminum alloy, as a result of which the risk of corrosion is minimal.

The main features characterizing the first type are weight and cost. They are produced by the following companies: Royal Thermo BiLiner, Global Style, Rifar (Monolit model) and the domestic company Santekhprom BM.

Another type is called semi-bimetallic radiators. The main characteristics of such devices: high heat transfer and more low price. The most popular brands of devices Gordi, Sira and Rifar, excluding Monolit model.

Center distance

Most manufactured models of bimetallic radiators are equally functional. However, the distance between the axles varies among models. Standard distances between axles: 35 and 50 cm.

You can find radiators in which the gap is 20 cm; this length is considered the minimum. Batteries with this distance are produced by the following companies: Sira, BiLUX and RIFAR. The maximum distance is 80 cm; such models are available from the manufacturer Sira.

Material of manufacture

It is important that the radiator withstands the effects of an aggressive environment well if the coolant is of insufficient quality and contains a large amount of alkali and acidity. This is mainly typical for batteries in apartment buildings.

1. It is important that the internal channels are made of the same metal, preferably stainless steel.
2. The wall thickness of the inner pipe should be 3-3.5 mm.
3. The quality and elasticity of the gaskets plays a very important role. They are the ones that influence the reliability of the connections, so rubber or silicone is usually used as the material used for them. To check the quality o-ring, just bend it with your fingers. If the gasket is rigid and inelastic, then this indicates its low quality.
4. If the radiator is sectional, then you should pay attention to the nipples. It is important that they are made of high quality steel. The low quality of these parts is evidenced by the softness of the metal. If it is of poor quality, then the hooks for the key will definitely break off and in this case the nipple will need to be sawed using grinder and remove its parts from the openings of the sections.
5. The width of the front part of the radiator fin should be more than 70 cm. If this figure is lower, this will affect the heat transfer of the radiator in negative side. The most optimal ratio of section size to cross-section is 80*80 mm. With such indicators, heat transfer will definitely be high.
6. The thickness of the protruding ribs also indicates quality. This figure should be no lower than 1 mm.

Guarantee

The warranty period also speaks about the quality of the product. If the manufacturer gives a service life of only 1-2 years, this means that the likelihood that the radiators will work with high efficiency is small, because The operational period of a quality product is 20-30 years.

Specifications

The technical characteristics of batteries include dimensions. The height of radiators ranges from 20 to 80 cm. To select a radiator of the right size, you need to take into account the distance between the base of the window and the floor and subtract 20 cm from this number. The width is directly dependent on the location where the device will be installed.

Another important indicator is the working pressure, which varies between 15-35 atm. For centralized heating systems, it is better to choose the maximum values; for autonomous ones, the minimum values ​​are also possible.

One of the most important and significant criteria affecting the efficiency of radiators is power. This indicator is determined based on the power of one section (it is indicated in the data sheet).

Calculation of sections of bimetallic heating radiators

In order to effectively heat 1 m² of area, you need 100 W of thermal energy. To calculate the area of ​​a room, you need to multiply the width by the length.

N= S*100/P N - number of radiator sections, S - room area, m², P - specific thermal power of one section.

Use the calculation calculator required quantity bimetallic radiator sections.

Installation of heating radiators made of bimetal

Bimetal batteries must be installed in accordance with the instructions specified in the device passport.

In order to connect a radiator with your own hands, you need to take into account a number of factors:

• It is better to choose the middle of the window as a location for the battery;
• installation is carried out exclusively in a horizontal position;
• You need to maintain a distance of 3-5 cm from the wall to the battery. If you place the radiator too close to the wall, the result will be uneven distribution of heat;
• the distance to the window sill should be 8-12 cm, if it is less, it will negatively affect the heat transfer of the batteries;
• the distance from the floor to the battery is 10 cm.

Installation of all system elements is carried out in a plastic radiator package. This packaging must not be removed until the entire installation process has been completed.
The procedure for installing bimetallic heating radiators:

• Initially, you need to mark the proposed area on the wall where the brackets will be attached;
• then the brackets are fixed;
• batteries are installed on them;
• Next, the radiator must be connected to the pipes;
• then a thermostatic valve or faucet is installed;
• An air valve is installed at the top of the battery.

Manufacturers

Currently, on the heating equipment market you can find a large number of different models of bimetallic radiators produced by both Russian and foreign manufacturers. Let's look at the main characteristics of the most popular models.

Model	Distance between axles, mm	Section size: width*height*depth (mm)	Maximum working pressure, Bar	Thermal power of the section, W
Rifar (Russia)
Rifar Forza 350	350	415*90*80	20	136
Rifar Forza 500	500	570*100*80	20	202
Rifar MONOLIT 350	350	415*100*80	100	136
Rifar MONOLIT 500	500	577*100*80	100	194
Global Radiatori (Italy)
Style 350	350	425*80*80	35	125
Style 500	500	575*80*80	35	168
Style Plus 350	350	425*80*95	35	140
Style Plus 500	500	575*80*95	35	185
Royal Thermo (Italy)
BiLiner Inox 500	500	574*80*87	20	171
BiLiner 500	500	574*80*87	20	171
Tenrad (Germany)
Tenrad 350	350	400*80*77	24	120
Tenrad 500	500	550*80*77	24	161
Gordi (China)
Gordi 350	350	412*80*80	30	460
Gordi 500	500	572*80*80	30	181
Sira Industrie (Italy)
Gladiator 200	200	275*80*80	30	90
Gladiator 350	350	275*80*80	30	140
Gladiator 500	500	423*80*80	30	185
LLC Litiz (Ukraine)
Altermo LRB	500	575*82*80	18	169
Altermo RIO 500	500	570*82*80	18	166
Grandini (Italy)
Grandini 350	350	430*80*82	16	130
Grandini 500	500	580*80*80	16	167

Thus, high-quality bimetallic heating radiators are able to operate effectively for a long period of time.

Article outline

Buying a heating radiator (HR) is not a trivial task. There are many models, they cost differently, and it is not always clear which of those presented on store shelves meets our requirements. Therefore, we will save your time and tell you what to consider when choosing. We present to your attention rating of the 20 best heating radiators for apartments and private houses. Choose any of them - you won't go wrong!

For a private house or apartment?

There are dozens and hundreds of companies specializing in the production of radioactive materials. The competition is crazy. Marketers are coming up with new arguments in favor of their products. This makes the choice of characteristics richer, and making a purchase more difficult for the average buyer. Let's start with the simplest thing.

If you need a device for a private house or apartment with an individual heating system, then choose by power and design. Those. We saw a model we liked in appearance, selected it based on power/size – and that’s it. For an apartment in a multi-storey building, where the coolant is supplied through the pipes of a centralized heating system, you also need to take into account the working pressure set by the manufacturer. It should not be lower than 10-12 atmospheres. Otherwise, the structure will tear when water is supplied.

Now let’s look at the types of heating radiators, traditionally presenting the data in the form of a “tiny” table.

Device options and their features

Comparison criterion	Varieties	Characteristics
Execution	Sectional	+ it’s convenient to vary the power of the device by changing the number of sections – collapsible design – risk of leaks at joints with poor quality gaskets
	Tubular	+ similar to sectional ones, but without their disadvantages - high price
	Panel	+ minimal risk of leaks, easier to select by size, quick control of the temperature of the RO (due to the smaller volume of coolant inside) – many models are designed for relatively low pressure and are only suitable for use in private homes that have a heating system with a circulation pump
Radiator material	Cast iron	+ durable, inexpensive - heavy, only sectional, with high thermal inertia, which does not allow you to quickly regulate the temperature in the room, the design of available devices is not for everyone - more interesting models are expensive
	Steel	+ variety of types of structures made from this material, fast heating, affordable price – susceptibility to corrosion caused by the use of low-quality alloys. Due to the relative simplicity of production, you may encounter inexpensive products from unscrupulous manufacturers. Accordingly, such companies use the cheapest steel, while the thickness of the radiator walls is minimal. All this causes rapid failure of the RO.
	Aluminum	+ lightweight and durable, easy installation, due to low thermal inertia they allow you to quickly change the room temperature - more expensive than steel ones, due to special requirements for the coolant - suitable only for individual heating systems (in private houses or apartments with a heating boiler)
	Bimetal (steel+aluminium)	+ considered more durable than aluminum and steel - high price
	Copper	+ durable, high heat dissipation – direct connection to steel pipes is unacceptable, high cost, impossibility of painting
Gasket material	Silicone	Withstands high temperatures, effectively compensating for the expansion of metal structures. Perfect option for heating systems with low pressure, for example in private houses.
	Paronitis	Paronite is pressed rubber mixed with asbestos and other components. Durable, withstands high temperatures. It is most often used in centralized heating systems.
	Fluoroplastic	A product made of heat-resistant polymer that can be installed without lubrication. Withstands exposure to any type of coolant.
	Cardboard	Impregnated with oil paint, special cardboard successfully copes with its function in aluminum and bimetallic RO installed in private homes.
Coolant	Water	We are not talking about plain water, but about specially prepared water. This is exactly what circulates in the centralized heating system. It limits the content of hardness salts (due to which salt deposits - scale - form in pipes) and oxygen (due to which the material corrodes and breaks down). Water requirements in the EU and the Russian Federation are different, so when purchasing a foreign-made heating radiator, it is recommended to take into account the chemical composition of the water in your heating system. If desired, you can find it out at the Housing Office.
	Antifreeze	Antifreezes or “anti-freeze” agents are used for systems with an individual heating circuit. They are needed if there is a risk of the coolant freezing due to the boiler being turned off. As you know, coolant is always in the system. If, for example, in winter the water in the system freezes, then due to expansion it will rupture the pipes, radiator, etc. Antifreeze does not freeze at average subzero temperatures. Ethylene glycol, propylene glycol, and alcohol solutions can serve as such coolants.
Installation location	Stationary	Traditional heating radiators installed in most apartments. Mounting to the wall is carried out using special pin or corner brackets
	Floor	The same as stationary devices, only they are installed on special legs.
Operating pressure*	up to 10 atm.	Such values ​​are predominantly typical for panel-type devices.
	up to 20 atm. and higher	For tubular and sectional RO.
Center distance	350, 400, 500, 600, 700 mm	The distance between the axes of horizontal collectors, along which a device is selected for connection to the existing pipe distribution.
Connection method	Lateral one-sided. (subtype of side connection)	The most common and effective solution in terms of using the capabilities of RO. Connection from the side: from above - to the pipe supplying coolant, from below - to the outlet.
	Diagonal (subtype of lateral connection)	Most often used when connecting long devices (from 2 m and above), which allows the coolant to be evenly distributed throughout the entire volume of the structure. Inlet from above, outlet from the lower opposite side.
	Saddle (subtype of side connection)	For sectional ROs when it is impossible to use other methods. Inlet and outlet from the side from below on opposite sides of the device. In this case, the heat exchanger power may drop by 10-20%.
	Lower	For connecting panel RO with hidden pipe routing under the floor. Inlet and outlet from below at a short distance. The efficiency of the radiator is lower than with lateral and diagonal connections.
Thermal power**	values ​​in a wide range	Characterizes the radiator’s ability to transfer a certain amount of heat from the coolant to the room per hour of operation. It depends not only on the size and design of the RO, but also on the temperature of the coolant, as well as the air in the room.
Dimensions	On average: height from 260 to 800 mm, width from 270 to 1800 mm, depth from 50 to 100 mm	Directly affect the thermal power of the device, because The volume of coolant circulating in the device depends on this.

* Before choosing a device, you need to check with the housing office about the maximum pressure in the heating system. Remember that all radiators except aluminum ones are suitable for a centralized heating system!

** We are often asked about how to choose the right heating radiator based on power. To make life easier for you and yourself, we have developed a convenient calculator. Enjoy it for your health!

For those who want to estimate the thermal power on their own, you can use the following method. We determine the required values ​​per unit area of ​​the room: 100 W/m2 – one window and one external wall; 120 W/m2 – one window and two external walls (corner room); 130 W/m2 – two windows and two external walls (corner room). For example, there is corner room 20 m2 with two windows. Then the approximate power of the RO will be: 20 × 130 = 2600 W. Let's make an allowance for the fact that the nameplate characteristics of radiators are tied to the ideal operating conditions of the device - 10% is quite enough. In total, we get the required thermal power: 2600 × 1.1 = 2860 W.

All that remains is to decide the right model, which you can find among the 20 devices we selected.

Brief description of RO models from the rating

Brand and country of manufacture	Model and section/panel dimensions (W×H×D)	Material, rated heat flux per section/panel, W	Approximate price per unit/section
1.	STYLE PLUS 500 (80×575×95)	bimetal, 185	from 1041 rub.
2.	ALP-500 (81×570×75 mm)	bimetal, 158	from 630 rub.
3.	RS 500 (80×572×95)	bimetal, 201	from 850 rub.
4.	Monolit 500 (80×577×100)	bimetal, 196	from 850 rub.
5.	PianoForte 500 (80×591×100)	bimetal, 185	from 1500 rub.
6.	ISEO 500 (80×582×80)	aluminum, 180	from 790 rub.
7.	Standard Plus 500 (79×531×72)	aluminum, 198	from 400 rub.
8.	Al 500/80 (79×531×72)	aluminum, 170	from 420 rub.
9.	ALICE ROYAL 95/500 (80×580×95)	aluminum, 190	from 560 rub.
10.	Indigo 500 (80×591×100)	aluminum, 185	from 630 rub.
11.	Logatrend K-Profil 33 300 1200 (1200×300×155)	steel, 670	from 2000 rub.
12.	Harmony 2-500-12 (70×545×80)	steel, 180	from 2250 rub.
13.	type 22 500×1000 LU 22-510 (1000×500×47)	steel, 697	from 2850 rub.
14.	FKO 22 0510 (1000×500×100)	steel, 965	from 2650 rub.
15.	Style (60×580×130)	cast iron, 70	from 1500 rub.
16.	MS-140M-05 (104×588×140)	cast iron, 160	from 500 rub.
17.	Modern 3-745/600 (45×745×100)	cast iron, 102	from 2000 rub.
18.	Aero H (325×900)	steel, 290	from 41,000 rub.
19.	Karotherm KM90 (500×943×22)	steel, 481	from 100,000 rub.
20.	Apollo 765/05 (76×768×250)	cast iron, 145	from 6600 rub.

In addition to the heat exchanger itself, do not forget about the control valves (thermal head) and the Mayevsky tap (if not included), which must be purchased separately. In some cases, the same applies to installation kits. Single-pipe heating systems will require a bypass.

We offer you a small rating that contains the best models of heating radiators. To make it easier to compare, we tried to select devices with the same number of sections - most often there will be 6 of them. This edge solution is most popular for standard apartments. All prices are for comparison purposes only.

5 bimetallic radiators

1. Global STYLE PLUS 500, 6 sections – from 4600 rub.

STYLE PLUS 500 model of the famous Italian manufacturer Global. A special feature of STYLE PLUS 500 is an increased safety margin - the product can withstand pressure up to 35 atmospheres - as well as an increased diameter of the vertical channels connecting horizontal collectors. To seal the connections of the sections, special silicone gaskets are used, designed for contact only with treated water - other types of coolants are not allowed. This bimetallic product is designed in such a way that there are no air pockets inside that prevent proper operation device. Warranty – 10 years.

2. RIFAR ALP-500, bimetal, 6 sections – from 3800 rub.

In 2002, the Russian company Rifar quickly burst into the production of heating radiators for private houses and apartments, and since then has achieved considerable success. The main specialization of RIFAR is the development and production of bimetallic and aluminum devices. In the RIFAR ALP-500 bimetallic radiator model, high heat transfer is achieved due to the developed lateral surface of the section. Therefore, the design turned out to be very slender - only 75 mm thick! There are models on sale with a number of sections from 4 to 14, connected through silicone gaskets that provide uncompromising tightness. RO can be made in any of the colors of the RAL 9016 palette. However, it must be taken into account that the coolant for such a device should only be specially prepared water - “anti-freeze” agents used in heating systems of private houses will not be suitable here. 10 year warranty.

Check out the ten-minute video about making the Rifar radiator:

3. SIRA RS 500, bimetal, 6 sections – from 5100 rub.

The Sira brand produces high-quality Italian ROs, including the model we are interested in - RS 500. Reliable, stylish and efficient - this is how this product can be characterized. The company has been around for more than half a century, so only proven solutions are used: a solid steel frame with an outer layer of aluminum, high-quality painting. It differs from other solutions in the absence of sharp corners. The warranty is 20 years. However, you need to take into account that the installation kit is non-standard and is not available for sale everywhere, so it is better to buy it first.

4. Rifar Monolit 500, bimetal, 6 sections – from 5600 rub.

It is no coincidence that the Monolit 500 model from the previously mentioned manufacturer Rifar was included in our rating. This is all due to the fact that the Russian company has really succeeded in developing innovative heating solutions. The product fully lives up to its name - it is monolithic, the sections are conventional, because they are welded together, forming a solid structure. Thus, the possibility of coolant leakage is reduced to zero. This RO can withstand pressure up to 100 atmospheres! Plus, there are practically no restrictions on the coolant used. The manufacturer's warranty is 25 years.

5. Royal Thermo PianoForte 500, bimetal, 6 sections – from 9,000 rub.

Do you want a bimetallic radiator to be not only reliable, but also look sophisticated? Check out the features that look like a piano keyboard. In addition to the fact that the product from the Italians has an original appearance, many technologies were used for its production: additional fins on vertical channels (POWERSHIFT), asymmetrical arrangement of sections (3D HEATING), the ability to use any coolant, including antifreeze (ABSOLUTBIMETALL), seven-stage painting etc. The device is available in three colors. Warranty – 25 years.

Watch the video about the main advantages of Royal Thermo:

5 aluminum radiators

6. Global ISEO 500, aluminum, 6 sections – from 3200 rub.

– compact sectional cast aluminum radiator. It can operate on specially prepared water or at temperatures up to 110×C and pressure up to 6 atm. - for a couple. There are 8 modifications on sale, differing in color, the number of sections can reach 14 pieces. The manufacturer positions it as a model designed for use in the Russian Federation. This is due to the design feature: the developed area and the large volume of coolant circulating in the device. Due to this, it works effectively even with low temperature water. Warranty – 10 years.

7. Thermal Standard Plus 500, aluminum, 6 sections – from 2400 rub.

This and other RO models have been produced in the Russian Federation for almost 20 years at Zlatmash OJSC, which is a defense enterprise. Specializes in aluminum devices; instead of casting technology, pressing from hardened profiles is used. The main advantage is the price and high rated thermal power. The section volume is small, which allows you to quickly adjust the temperature of the product. A working pressure of 24 atmospheres is more than enough for normal functioning in any apartment buildings. The number of sections in the standard delivery varies from 3 to 16. With a declared service life of 25 years, the manufacturer’s warranty is 5 years. Only specially prepared water can be used as a coolant.

8. Oasis Al 500/80, aluminum, 6 sections – from 2500 rub.

The Oasis brand belongs to the Forte Prom GmbH holding, and, despite the English-language name, we are again dealing with Russian products. The aluminum radiator Al 500/80 is produced by injection molding: each section is cast and then the bottom is welded to it. A classic design with a developed side surface, a significant volume of coolant in the system, as well as a 15-year warranty - this is how this device can be characterized. Models are supplied in 4, 6, 8, 10 and 12 sections.

9. Sira ALICE ROYAL 95/500, aluminum, 6 sections – from 3300 rub.

Smooth lines give the ALICE ROYAL 95/500, produced under the Sira brand, a universal appearance. Therefore, the device will look advantageous in any room. The product is made using injection molding technology and is reliable and durable. The operating pressure limit of 16 atmospheres is enough for installation in most high-rise buildings. Warranty – 15 years.

10. Royal Thermo Indigo 500, aluminum, 6 sections – from 3800 rub.

Despite its Italian roots, it is produced in the Russian Federation. In addition to the original design, this device uses interesting technology reverse convection, due to which cold air is cut off from the windows. This became possible due to the design of the upper part of the RO, with the help of which a reverse flow of warm air is formed. Additional fins on vertical channels increase thermal power by 5%. A super-resistant layer of paint ensures the original appearance of the product throughout its entire service life. Warranty – 10 years.

Watch a video about Royal Thermo innovation:

5 steel radiators

11. Buderus Logatrend K-Profil 33 300 1200, steel – from 6000 rub.

The famous German brand Buderus produces a wide range of heating equipment, so we simply could not help but add the successful model of the steel radiator Logatrend K-Profil 33 300 1200 to our rating. This is a steel panel unit with three panels and fins, as well as side connection. It features safety edges - a huge plus for families with children. Among the features include the presence of a built-in thermostatic valve Danfoss, which increases the efficiency of the device by 5%. In addition, the RO itself can be installed on either side - it does not have a designated rear part. There are many modifications in the series with 1, 2 and 3 panels, with and without convection plates. Warranty – 5 years.

12. KZTO Harmony 2-500-12, steel – from 27,000 rubles.

Another interesting steel model is presented by the Russian enterprise KZTO RADIATOR, operating since 1997. We are talking about the Harmony line of sectional devices, in which the section is made in the form of a pipe with a double wall - the coolant circulates inside. This design ensures efficient heat exchange, looks stylish, and is easy to maintain. By default it is supplied for wall mounting. The service life is 25 years, the warranty is 5 years.

Watch a video about installing the KZTO Harmony radiator:

13. Lideya type 22 500×1000 LU 22-510, steel – from 5700 rub.

The products of Belarusian manufacturers are represented quite widely on the Russian market. Radiators are no exception, competitive due to their affordable prices and good quality. The Lideya model type 22 500×1000 LU 22-510 from the Lidselmash plant is made of cold-rolled steel, the panel thickness is 1.2 mm. Already from the designation it is clear that the design of this device looks like this: 2 panels, 2 convectors. The mount is universal (supplied in the kit), in addition to the pipes for the side connection, there is also a pair for the bottom. This RO can be installed in any heating systems, including gravity ones. Warranty – 5 years.

At the time of writing, there were problems with access to the official website of the plant (http://lidselmash.by/).

14. Kermi FKO 22 0510, steel – from 5300 rub.

Devices from Kermi are in great demand in the CIS. At the moment, the German company offers four lines of steel RO. We are interested in the therm-x2 Profil-K or FKO series, model 22 0510. This is a two-panel device with fins to increase heat transfer. A small amount of coolant guarantees a rapid change in the temperature of the product. There are top and side screens that give the product a finished and aesthetic appearance. Side connection. Warranty – 5 years.

15. Terma Aero H (325×900), steel – from 41,000 rub.

The fairly well-known Polish company Terma produces many heating devices, and Aero H (325×900) is one of the most successful. This design solution, so you should not overestimate its thermal capabilities. The smooth lines of the device will be appropriate in any modern room, be it residential or office. The low weight allows you to hang the device even on a plasterboard base. The only caveat is that such a RO can only work in a private heating system with low pressure, i.e. not suitable for apartments. Available in several sizes, there are horizontal and vertical modifications, and many colors.

5 cast iron radiators

16. Viadrus Styl, cast iron, 6 sections – from 9,000 rubles.

Positioned by the Czech manufacturer as designer, but in reality almost classic cast-iron radiators also made it into our small rating. Unlike its counterparts, the capacity of each section of such a RO is small, which means that the amount of heat received can be quickly varied. The disadvantage of this approach is low power. Regarding the advantages, one cannot fail to note the possibility of side and bottom connections. The product already has a temperature-controlled valve built in for these purposes. Various color solutions are possible. Manufacturer's warranty – 10 years.

17. MZOO MS-140M-05, cast iron, 7 sections – from 3500 rub.

Such radiators can often be seen in old houses. Many still consider them the best solution for heating an apartment. We are talking about a real legend - the cast iron product MS-140M. IN in this case The product is manufactured at the Belarusian enterprise OJSC MZOO. What can you say about such devices? It is enough that they are bought even second-hand and boldly added to their apartments - the low price decides everything. Almost indestructible with proper use, although the manufacturer gives a modest warranty of only 3 years.

18. EXEMET Modern 3-745/600, cast iron - from 12,300 rubles.

The cast iron tubular design of the radiator looks stylish and interesting. This is a floor product whose name speaks for itself – its laconic lines can decorate almost any room. The device is available in various colors, texturing is possible, as well as additional surface treatment, for example, polishing, patination, etc. The number of sections in one RO can reach 26 pieces.

Basic specifications EXEMET Modern 3-745/600 (x6)

Swiss-German Arbonia design radiators are priced in the premium segment, so you shouldn’t be surprised at such a high cost. What does the famous manufacturer offer us? A stainless steel product that will become an organic addition to the interior of a modern home. Precisely at home, because it has a working pressure limitation of 4 atmospheres. This device can only be considered as an auxiliary RO, because its thermal power is small, and increasing the size (and power) can increase the cost to sky-high heights.

Characteristics	Meaning
Material	cast iron
Thermal power, W	612
Number of sections, pcs.	6
Max working pressure, atm.	10
Center distance, mm	600
Connection	lateral/diagonal
Water volume in one section, l

Main technical characteristics of Arbonia Karotherm KM90

German design radiators GuRaTec Apollo 765/05 are in high demand among antique lovers. The design of the product is copied from a French model of 1890, this reproduction is the most accurate one produced today. A device with an elegant ornament will fit perfectly into the interior of a room designed in classic style. Three versions with different heights are available to buyers: 475, 765, 970 mm.

Watch a one-minute video about the variety of GuRaTec Apollo radiators:

Editor's Choice

Among bimetallic radiators, two models deserve special attention: and. The first is interesting for its increased safety margin. The second is notable for its unusual design, which makes the radiators an original part of the interior design.

Among aluminum devices, RO stands out for adapting the design to operating conditions in the Russian Federation.

Among the steel ones, a very interesting solution has been implemented - the radiator will not only warm you up, but will also be an excellent addition to the minimalist interior design.

Characteristics	Meaning
Material	steel
Thermal power, W	481
Number of sections, pcs.	1
Max working pressure, atm.	4
Center distance, mm

Bimetallic batteries Today they occupy one of the leading places in popularity. They are inferior in this position, probably, only to the usual cast iron radiators, and even then, most likely, only due to the extreme prevalence of the latter, the adherence of many consumers to established traditions, and a kind of “inertia of thinking.”

Bimetallic radiators are increasingly being chosen for installation in the heating circuit of both a private house and a city apartment, since they, unlike aluminum and steel, have a pronounced resistance to increased pressure loads and temperatures. However, when choosing these heating devices, it is very important not to run into low-quality fakes or purchase products from a manufacturer that has not yet passed the test of time. Therefore, let's consider the question formulated in this way: “bimetallic rating of manufacturers” - since this selection criterion plays far from a secondary role.

It is very difficult to give an accurate assessment of all bimetallic radiators on sale. Therefore, the publication will consider only a few companies, but they have already gained indisputable authority with the quality of their products.

General information about bimetallic radiators

Before moving on to considering the products of various manufacturers, a few minutes of attention should be paid to the design of these heating devices. It’s worth figuring it out, if only so as not to purchase aluminum batteries at the cost of bimetallic ones, since they look very similar in appearance, but performance– is already at a completely different level, and the difference in price is considerable.

Their outer heat exchange casing has almost the same shape and is made of the same material - aluminum. But that's where the main similarities end.

Bimetallic battery models can be divided into two parts - internal, made of steel, and external, heat-exchange, made of aluminum - hence the name. The steel vertical channels of each section consist of pipes that are connected by welding in the lower and upper parts with horizontal sections of larger diameter, which form collectors when assembling the battery. This entire tubular steel structure is intended for coolant circulation.

Sections can be assembled into a single battery using a threaded coupling connection; factory welding is less commonly used. Depending on the type of this connection, the battery can be sectional, collapsible, or a block one-piece design. A single block may include several (for example, 3÷4) sections, but if necessary, it is quite possible to add the required number of sections to it or assemble a battery from several such blocks.

Steel channels are much more resistant to aggressive components of the central heating system coolant than all-aluminum batteries. Therefore, the permissible acid-base indicator (pH) of the coolant can lie in an extended range, from 5 to 11 units - aluminum batteries have never even dreamed of such indicators.

The internal steel tubes are a kind of “skeleton” of the bimetallic radiator, which makes the entire structure more rigid and durable. Steel, especially if it has a protective coating, or if high-quality stainless steel is used for the manufacture of channels, is inert to corrosive processes, and the connection of such pipes can withstand increased pressure.

This type of battery has excellent heat dissipation, and this is due to the fact that steel is capable of accumulating and retaining heat when warming up, and an aluminum outer casing with a sufficiently large area, due to the high thermal conductivity of this metal, effectively transfers thermal energy to the premises.

You might be interested in information on how it is calculated

Almost all modern designs of bimetallic devices are equipped with additional ribs - “petals”, which form convection channels. And the more there are, the larger the heat exchange area and the higher the heat transfer from the heating device. Moreover, these elements are configured in such a way that convection currents of warm air are directed towards the room.

High-quality bimetallic radiators must be designed for a pressure of at least 40 bar, therefore, when choosing them, you need to pay special attention to this parameter. It is usually indicated as used when testing products. You shouldn’t be surprised at such a high figure - such pressure may well be caused by water hammer in the central heating system.

By the way, bimetallic radiators fully reveal their operational capabilities precisely under conditions of high pressure and heating temperature, therefore they are preferable for central heating systems. And if this type of battery is planned for an autonomous system, then you will have to install a powerful water pump in it, which will create the necessary coolant circulation pressure.

You might be interested in information about what

Popular manufacturers of bimetallic radiators

The Russian market offers products from various manufacturers, both domestic and foreign, and their products differ in their characteristics and price levels. To give an idea of ​​these parameters, a number of models of bimetallic radiators manufactured by different companies will be considered below.

And it’s worth starting with the most affordable option.

Company "WARMA"

"WARMA" is a Russian-Chinese company that produces sectional cast bimetallic radiators. Production facilities are located in China, but they are equipped with high-quality European equipment, and technical control of manufactured products is carried out by Russian specialists.

These products fully comply with GOST 31311-2005 and all other standards of the Russian central heating system.

Bimetallic batteries “WARMA” are designed for installation in autonomous circuits of private houses and high-rise apartments connected to heating plants.

WARMA BIMETALL models are produced in two versions - WB350 and WB500. They differ in the center distance and, accordingly, in some other operational parameters. The main characteristics of these batteries are summarized in the table below.

The steel core of these radiators is made of carbon steel - its vertical channel has a wall thickness of 2 mm and an internal diameter of 20 mm, and the thickness of the steel of the horizontal collector sections of the sections is 4 mm.

The manufacturer declares the following technical and operational characteristics of its products:

Name of parameters	Radiator model “WARMA BIMETALL”, numerical parameters
	WB350	WB500
Working pressure, atm.	25	25
Test pressure, atm.	40	40
	130	180
	110	110
Hydrogen index, pH	6-10,5	6-10,5
Section volume, l	0.17	0.23
Section weight, kg	1.45	1.64
Center distance, mm	350	500
Section height, mm	410	560
Section depth, mm	80	80
Section width, mm	80	80
	1	1
Radiator color	White	White
Guarantee	10 years	10 years

To make it easier for the consumer to decide on the number of WARMA radiator sections required to heat a room of a certain area, the manufacturer provides tables indicating the recommended solution.

Model WB350 with a height of 410 mm, a depth of 80 mm and an interaxial distance of 350 mm, is assembled into batteries from a different number of sections and has the following heating capabilities:

Number of sections in the battery, pcs	Radiator width, mm	Heat dissipation from battery, W.	Room area, m²
4	320	520	5÷6
5	400	650	6÷7
6	480	780	8
7	560	910	9
8	640	1040	10
9	720	1170	11÷12
10	800	1300	13
11	880	1430	14
12	960	1560	15÷16

The WB500 model, having a height of 560 mm, a depth of 80 mm and an interaxial distance of 500 mm, composed of a one-piece structure, also of a different number of sections, has greater heat transfer, which is:

Number of sections in the battery, pcs.	Radiator width, mm	Heat dissipation from battery, W.	Room area, m²
4	320	720	7
5	400	900	9
6	480	1080	10÷11
7	560	1260	12÷13
8	640	1440	14
9	720	1620	16
10	800	1800	18
11	880	1980	19÷20
12	960	2160	21÷22

In order not to return to this issue again, it should immediately be noted that this approach to determining the number of radiator sections based only on the area of ​​the room is very approximate. It does not take into account many other features of the room and the way the batteries are installed. Therefore, in the appendix to this article we will provide a convenient universal calculator that allows you to calculate the number of sections of a radiator of any brand with high accuracy.

The cost of one section of the “WARMA” radiator is approximately 450÷500 rubles for the WB300 model, 600÷630 rubles. for model WB500. The price level, naturally, may vary somewhat in different regions of the country.

Radiators "Könner"

“Könner” - despite the clearly German-language name, a Russian company is registered under this trademark. Its products (again, completely Russian-made) are in no way inferior in quality to other European analogues, since they are designed on the basis of modern technologies and taking into account the characteristics of the regions of Russia. Könner's main production facilities are located in China.

The company began its work on the production cast iron batteries about 25 years ago, but responded sensitively to market demands and launched the development and production of more modern heating devices. Thus, already at the beginning of the 2000s, aluminum and bimetallic radiators of their own design began to arrive in Russian construction stores. In this short period of time, the product managed to become quite popular, thanks to its affordable prices and high quality.

The company's engineers, knowing the special specific conditions of the Russian central heating system, improved and adapted the technical characteristics of the devices, the design of which was taken as a basis. That is why these radiator models compare favorably with other foreign analogues. Due to their reliability, Könner radiators are suitable for installation in both central and autonomous heating systems.

Heating devices of this brand have high anti-corrosion characteristics, have good resistance to pressure loads, and can easily withstand water hammer. Radiators owe their reliability to durable pipes vertical pipes and a horizontal collector, which are made of high-alloy steel and are the backbone of the structure. Die-cast aluminum housing with a large contact area provides excellent heat dissipation.

The high quality of Könner products is confirmed by international ISO certificates and full compliance with domestic GOST 31311-2005, section “Heating Appliances”. Products from this manufacturer have repeatedly taken first place in the Russian Federation in terms of consumer demand.

The technical characteristics of these products are presented in the table:

Name of parameters	“Könner” radiator model, numerical parameters
	350	500
Working pressure, atm.	30	30
Test pressure, atm.	44÷45	44÷45
Heat transfer of one section, W.	140	190
Maximum coolant temperature, ˚С	110	110
Hydrogen index, pH	7-9,5	7-9,5
Section volume, l	0.14	0.18
Section weight, kg	1.35	1.75
Center distance, mm	350	500
Section height, mm	413	560
Section depth, mm	80	80
Section width, mm	80	80
Inlet diameter, inch	G 1"	G 1"
Radiator color	White	White
Guarantee	15 years	15 years

Bimetallic radiators "Könner" go on sale in sectional and block versions. The block can include from 4 to 12 sections. The price for one section averages from 400 to 500 rubles. It is more profitable to purchase a block version - prices for a block decrease as the number of sections increases, and can even be less than 400 rubles per section.

Radiators "TENRAD"

"TENRAD" - a company producing radiators, was established in 2005 in Germany in the city of Dresden. The enterprise was organized by young talented engineers working in the design of heating systems.

Like many other companies, the production of these heating devices, due to favorable conditions on the labor market, was located in China. The TENRAD radiator manufacturing plant is equipped with its own chemical-technological laboratory, state-of-the-art “Farm New Brass” metal casting complexes, and robotic manipulators developed German company"Kuka" and body painting lines made in Switzerland. All this equipment turned a small factory into a high-tech enterprise, in no way inferior to leading European factories. The production of radiators is carried out under the watchful supervision of German technologists from the parent company TENRAD.

The walls of the TENRAD VM radiator collector on horizontal channels have a thickness of 3.6 mm, and on vertical channels - 1.8 mm. The fins, installed in three rows, create two convection gaps in the upper part of the radiator, through which heated air enters the room. The radiators are coated with high-quality paints and varnishes in two layers, and the outer one consists of sprayed epoxy polyester, which meets the requirements of SanPiN 2.1.2.729-99 and standards RD 52.04.186-89, which establish the hygienic safety of materials. In addition, TENRAD VM products comply with GOST 31311-2005, which confirms their adaptation to Russian systems heating.

Prices for bimetallic radiators TENRAD

bimetallic radiators TENARD

The technical characteristics of these devices are as follows:

Name of parameters	Radiator model “TENRAD VM”, numerical parameters
	VM350	VM500
Working pressure, atm.	24	24
Test pressure, atm.	36	36
Heat transfer of one section, W.	120	161
Maximum coolant temperature, ˚С	120	120
Hydrogen index, pH	5÷11	5÷11
Section volume, l	0.15	0.22
Section weight, kg	1.22	1.45
Center distance, mm	350	500
Section height, mm	400	550
Section depth, mm	77	77
Section width, mm	80	80
Inlet diameter, inch	G 1"	G 1"
Radiator color	White	White
Guarantee	50 years	50 years

The average cost of TENRAD VM radiators is from 620 to 720 rubles per section, but can vary up or down, depending on the region of the country. You can purchase batteries already assembled into blocks of 4÷12 sections.

Bimetallic radiators "Radena"

Radena is an Italian company whose office, design bureau and testing laboratories are located in Italy, but the products themselves are manufactured again in China, at the WANGDA Group plant, under the close supervision of Italian specialists.

This brand of radiators has decent quality and good adaptation to Russian networks heating, so it’s difficult to find negative reviews about them. The products have been presented on our market since 2010, and during this time they have gained wide popularity, despite the relatively high price. This is explained by the fact that buyers are attracted by the quality and reliability of these radiators.

The model range is presented in three names - with different center distances: 150, 350 and 500 mm.

The design features of these radiators include the following:

• Self-aligning gaskets installed between sections are made of graphite, so there will be no distortions when assembling and disassembling the battery. Thanks to this, a high degree of sealing is achieved and no leaks form at the connections.
• The threads on the section connections are absolutely straight and never filled with paint.
• The ends of the radiators are perfectly cleaned and ready for installation.
• High-quality original packaging reliably protects products from damage during transportation.

This brand of radiators is one of those products that are characterized by increased thermal conductivity and durability. All manufacturing materials fully comply with European environmental standards.

This table presents the technical characteristics of different-sized Radena models:

Name of parameters	Radena radiator model, numerical parameters
	Bimetall CS 150	Bimetall CS 350	Bimetall CS 500
Working pressure, atm.	25	25	25
Test pressure, atm.	40	40	40
Heat transfer of one section, W.	120	135	185
Maximum coolant temperature,˚ C	110	110	110
Hydrogen index, pH	6.0 ÷ 10.5	6.0 ÷ 10.5	6.0 ÷ 10.5
Section volume, l	0,1/0,13	0.16	0.22
Section weight, kg	0,88/1,19	1.43	1.85
Center distance, mm	150	350	500
Section height, mm	241	403	552
Section depth, mm	120	85	85
Section width, mm	74	80	80
Inlet diameter, inch	G 1"	G 1"	G 1"
Radiator color	white	white	white
Guarantee	15 years	15 years	15 years

All surfaces of these radiators, both internal and external, undergo special anti-corrosion treatment before painting. After this, they are dipped into a bath with a colorful composition, and then dried well and subjected to a second stage, during which they are sprayed upper layer high strength epoxy coating.

The price of Radena radiators with different center distances may vary not only depending on this parameter, but also on the region where they are purchased. So, “CS150” - 420÷500 rubles; “CS350” - 600÷800 rubles; “CS500” - 645÷ 850 rubles.

Radiators "Rifar"

"Rifar" is a well-known domestic manufacturer specializing in the production of aluminum and bimetallic batteries. Bimetallic heating devices are equipped with an internal monolithic collector made of steel and housed in an aluminum housing. Batteries are produced with bottom and side connections, in three sizes.

Production facilities are located in Russia, in the city of Gai, Orenburg region. The equipment of automated lines, from beginning to end of the entire technological chain, is at an ultra-modern level.

Heating appliances of this brand comply with European quality and Russian regulatory documents GOST 31311-2005, TU 4935-004-41807387-10. This version of radiators is largely intended for installation in multi-storey residential and administrative buildings, since they have high strength and performance characteristics suitable for domestic heating systems.

• "Rifar Monolit" is produced in two dimensional versions - with an interaxle distance of 500 and 350 mm. Due to the fact that this Rifar model range is clearly resistant to corrosion processes, housing management companies often recommend it for installation in apartments in multi-storey buildings.

Technical and operational characteristics of Rifar Monolit radiators look like this:

Name of parameters	Radiator model “Rifar Monolit”, numerical parameters
	350	500
Working pressure, atm.	98	98
Test pressure, atm.	148	148
Heat transfer of one section, W.	134	196
Maximum coolant temperature, ˚С	135	135
Hydrogen index, pH	7÷9	7÷9
Section volume, l	0.18	0.21
Section weight, kg	1.5	2
Center distance, mm	350	500
Section height, mm	415	577
Section depth, mm	100	100
Section width, mm	80	80
Inlet diameter, inch	G 1", optional 1/2" and 3/4"	G 1", optional 1/2" and 3/4"
Radiator color	White	White
Guarantee	50 years	50 years

The average price for domestic Rifar Monolit radiators is quite high and is approximately 715 - 850 rubles, but it can also vary and be different for individual regions.

• Another model line of bimetallic batteries from this company is “Rifar Base Venti”. It, in turn, is divided into three options, which have an interaxle distance of 200, 350 and 500 mm.

In terms of color quality and design, the models in this series are more aesthetically pleasing than those of the Rifar Monolit, however, they are significantly inferior to them in their technical and operational characteristics. Therefore, the manufacturer gives a guarantee for these products for only 10 years, and estimates the operating period at 25 years.

Prices for bimetallic radiators Radena

Radena bimetallic radiators

It should be noted here that the manufacturer clearly warns that this battery option is more suitable for autonomous heating systems, since all indicators are designed specifically for it. For example, “Rifar Base Venti” radiators require a clean coolant, which can only be provided in an autonomous system. In addition, the test and operating pressure of these heating devices is several times lower than that of Rifar Monolit.

So, the main technical and operational characteristics of this line are as follows:

Name of parameters	Radiator model “Rifar Base Venti, numerical indicators of parameters
	200	350	500
Working pressure, atm.	20	20	20
Test pressure, atm.	30	30	30
Heat transfer of one section, W.	104	136	204
Maximum coolant temperature, ˚С	135	135	135
Hydrogen index, pH	7÷8.5	7÷8.5	7÷8.5
Section volume, l	0.16	0.18	0.2
Section weight, kg	1.02	1.36	1.92
Center distance, mm	200	350	500
Section height, mm	261	415	570
Section depth, mm	100	90	100
Section width, mm	80	80	80
Inlet diameter, inch	G 1"	G 1"	G 1"
Radiator color	White	White	White
Guarantee	10 years	10 years	10 years

The cost of radiators in this line is quite high, ranging from 725 to 900 rubles per section, but can also vary.

Bimetallic radiators "Fondital"

The Fondital company was founded in 1970 in the city of Weston in the Italian province of Brescia, and since its inception it has been engaged in the design and production of heating systems. Over the years of work and constant development, the small enterprise has turned into a large company with several large production facilities. Today Fondital is one of the world leaders in the development and manufacture of devices and components for heating systems. This manufacturer mainly produces aluminum radiators as heat exchange devices, but its product range also includes a bimetallic model, which is quite popular among consumers.

The bimetallic model “Fondital” has a name that speaks for itself - “Alustal”, and is intended for installation in central system heating of multi-storey buildings.

"Fondital-Alustal" is characterized by the following technical and operational indicators:

Indicator name	Numeric parameter values
Working pressure, atm.	40
Test pressure, atm.	60
Heat transfer of one section, W.	190
Maximum coolant temperature, ˚С	110
Hydrogen index, pH	7-10
Section volume, l	0.14
Section weight, kg	1.23
Center distance, mm	500
Section height, mm	559
Section depth, mm	80
Section width, mm	97
Inlet diameter, inch	G 1"
Radiator color	White
Warranty from installation	20 years

Radiators "Fondital-Alustal" can be block, and the batteries presented for sale can include from 4 to 14 sections, to which they can easily be added additional blocks or separate sections. The devices are quite expensive: the average cost of one section in different regions of the country is 740–950 rubles.

The manufacturer provides a guarantee for free elimination of all types of defects in production for a period of 20 years from the date of installation. However, such a guarantee only applies if the installation is carried out by a qualified technician in compliance with all installation conditions specified by the manufacturer in the product passport.

Bimetallic radiators from the Global company

The Italian company “Global” was created in 1971 and, we can say that it was at the very origins of the development and production of aluminum radiators. Having come a long way from a small workshop where assembly was done by hand to industrial automated workshops, today the Global company produces not only aluminum versions of heating devices, but also four models of bimetallic radiators of different sizes.

The company has its own testing laboratory, in which all raw materials entering the enterprise are subject to strict quality control. We are constantly developing new models and improving the technical and operational characteristics of existing product samples. The Global company received certification for the production of radiators according to the European standards ISO 9002 and ISO 9001-2000, and in 1996, the products of this manufacturer were certified in the GOST system of the Russian Federation. Year after year, the demand for heating appliances from this company is growing, which indicates high consumer confidence in products bearing the “Global” logo.

The main characteristics of bimetallic radiators produced by the company are given in the table:

Name of parameters	“Global” radiator model, numerical parameters
	"Style" 350/500	"Style Extra" 350/500	"Style Plus" 350/500	"Sfera" 350/500
Working pressure, atm.	35	35	35	35
Test pressure, atm.	52	52	52	52
Heat transfer of one section, W.	125/168	120/171	140/185	119/165
Maximum coolant temperature, ˚С	110	110	110	110
Hydrogen index, pH	6.5 ÷ 8	6.5 ÷ 8	6.5 ÷ 8	6.5 ÷ 8
Section volume, l	0,16/0,18	0,17/0,21	0,17/0,19	0.16÷0.20
Section weight, kg	1,50/1,87	1,42/1,87	1,50/1,94	1,40/1,87
Center distance, mm	500/350	500/350	500/350	500/350
Section height, mm	425/575	418/568	425/575	418/568
Section depth, mm	80	80	95	80
Section width, mm	80	80	80	80
Inlet diameter, inch	G 1"	G 1"	G 1"	G 1"
Radiator color	8 colors	8 colors	8 colors	8 colors
Guarantee	20 years	20 years	20 years	20 years

The color range of GLOBAL bimetallic radiators is wider, but the coloring of released models is often carried out at the request of consumers, and the standard color for batteries remains glossy white.

Bimetallic radiator “GLOBAL STYLE PLUS” 500 - 7 sections in basic color

All radiators undergo a two-stage painting process. The first stage involves immersing the products in a special bath and is called anaphoresis. The second stage involves spraying a dye based on the prepared surfaces. epoxy resins with the addition of coloring pigment.

As you can see from the table above, GLOBAL produces four models of bimetallic radiators, named “Style”, “Style Extra”, “Style Plus” and “Sfera”. Each of the models is available in two versions - with center distances of 350 and 500 mm. The table also shows the difference in some parameters of radiators from this manufacturer - this makes it easier to navigate when choosing batteries for specific conditions.

Please note the warranty period is 20 years. This once again indicates that the manufacturer is completely confident in the quality of its products.

The price of GLOBAL radiators is quite high (the highest of all those discussed in this publication), but they are justified by the reliability, durability and efficiency of the devices. Thus, the average cost of one section of a heating device starts from 800 and reaches 1200 rubles. More information about the price can be found at this link

Appendix: How to independently calculate the number of sections of a bimetallic radiator

A frequently practiced method of calculation is based on 100 W of thermal energy per square meter area, does not differ in accuracy - each of the rooms has its own characteristics, which also need to be taken into account. Therefore, we will take the liberty of offering the reader a more accurate algorithm, which is implemented in the program of the calculator located below.

Necessary comments on the calculation program

A few brief explanations on the calculations:

• The total amount of heat loss is affected by the presence and number of walls in contact with the street, as well as their location on the cardinal points and in relation to the prevailing winter winds. The program provides appropriate fields for entering this data.
• The climatic features of the region will be taken into account when indicating minimum winter temperatures. In this case, you should indicate not abnormal, but quite normal frosts for your region in the coldest decade of winter.
• The wall insulation parameter may raise questions. Here it is better to approach from the position that a wall is considered fully insulated if its thermal insulation was carried out in full on the basis of completed thermal calculations. There should be no uninsulated walls in residential buildings at all - no heating with this approach simply will not help: the room will still be cold, and the walls will be damp.
• The characteristics of the room, that is, its height and proximity below and above, directly affect the required amount of thermal energy to warm up the volume of the room and replenish heat loss through the ceilings.
• After entering the window parameters, the program will calculate the percentage of glazing (from the area of ​​the room) and enter the appropriate correction factor. A similar approach is used if there are regularly opened doors to the street or an unheated balcony.
• Finally, the overall heat transfer from heating radiators is significantly influenced by the scheme of their connection to the circuit and the features of their location on the wall. All this is taken into account by the calculation algorithm.
• Attention! The program is capable of producing two total values.

— If a calculation is selected for a non-separable radiator model, then the result should be taken into account "A"- this is the required total radiator power for a given room, expressed in kilowatts.

You may be interested in information about what to consider when choosing

Prices for popular bimetallic heating radiators

— If the goal is to calculate the number of sections of a collapsible radiator, then after selecting this path an additional field will appear in which you must enter the nameplate power of one section of the selected model (in watts). The result is taken from the point "B"- this is the required number of sections, rounded up to the nearest whole number.

The first heating radiators made from two metals (bimetallic) appeared in European countries more than sixty years ago. Such radiators coped well with the assigned function of maintaining comfortable temperature indoors during the cold season. Currently, the production of bimetallic radiators has been resumed in Russia; the European market, in turn, is dominated by various radiators made of aluminum alloy.

Bimetallic radiators are frame made of steel or copper hollow pipes (horizontal and vertical), inside which the coolant circulates. Aluminum radiator fins are attached to the pipes outside. They are attached using spot welding or special injection molding. Each section of the radiator is connected to another by steel nipples with heat-resistant (up to two hundred degrees) rubber gaskets.

In Russian city apartments with centralized heating radiators of this type perfectly withstand pressure up to 25 atmospheres (when pressurized up to 37 atmospheres) and, thanks to high heat transfer, perform their function much better than their cast iron predecessors.

Radiator - photo

Externally, it is quite difficult to distinguish bimetallic and aluminum radiators. You can make sure that your choice is correct only by comparing the weight of the specified radiators. Due to the steel core, the bimetallic one will be approximately 60% heavier than its aluminum counterpart and you will make an unmistakable purchase.

Video - Bimetallic radiator

Positive aspects of using bimetallic radiators

• Bimetallic panel-type radiators fit perfectly into the design of any interior (residential buildings, offices, etc.) without taking up much space. The front side of the radiator can be one or both; the size and color scheme of the sections are varied (self-painting is allowed). The absence of sharp corners and overly hot panels makes aluminum and steel radiators suitable even for children's rooms. In addition, there are models on the market that are installed vertically without the use of brackets due to additionally present stiffening ribs.
• The service life of radiators made from an alloy of two metals reaches 25 years.
• Bimetal is suitable for all heating systems, including central heating. As is known, low-quality coolant in municipal heating systems negatively affects radiators, reducing their service life, but bimetal radiators are not afraid of increased acidity and low quality coolant due to the high corrosion resistance of steel.
• Bimetallic radiators are the standard of strength and reliability. Even if the pressure in the system reaches 35-37 atmospheres, this will not damage the batteries.
• High heat transfer is one of the main advantages of bimetal radiators.
• Regulating the heating temperature using a thermostat occurs almost at lightning speed due to the small cross-section of the channels in the radiator. The same factor allows you to halve the volume of coolant used.
• Even if there is a need to repair one of the radiator sections, thanks to the well-thought-out design of the nipples, the work will take a minimum of time and effort.
• The number of radiator sections required to heat a room can be easily calculated mathematically. This eliminates unnecessary financial costs when purchasing, installing and operating radiators.

Negative aspects of using bimetallic radiators

• As mentioned above, bimetallic radiators are suitable for use with low-quality coolant, however, the latter significantly reduces the service life of the radiator.
• The main disadvantage of a bimetallic battery is the different expansion coefficient of aluminum alloy and steel. After prolonged use, creaking may occur and a decrease in the strength and durability of the radiator.
• When operating radiators with low-quality coolant, steel tubes can quickly become clogged, corrosion can occur, and the level of heat transfer can decrease.
• A contested disadvantage includes the cost of bimetal radiators. It is higher than that of radiators made of cast iron, steel and aluminum, but considering all the advantages, the price is completely justified.

How to calculate the number of radiator sections

Thanks to a simple mathematical formula, you can make a calculation and find out how many radiator sections are needed to heat the room.

Before making calculations, you need to know the area of ​​the heated room and the power of the radiator. The second value is indicated on product packaging or provided by radiator manufacturers in price lists.

So, to find out the number of radiator sections (A), you should multiply the area of ​​the room (S) by 100 and divide by the radiator power (P).

A = S×100÷P

With a room area of ​​20 sq.m and a radiator power of 180 watts, we get:

A = 20×100÷180

Accordingly, the number of sections can be 11 or 12. But, since radiators with a number of sections exceeding 10 heat up less efficiently, it is better to install two or three radiators with fewer sections.

Installation (installation) of bimetallic heating radiators

The design of the heating system includes pipes and the radiator itself. The connection of the radiator and pipes is made by spot welding. Installation is carried out by plumbers or other qualified specialists in a short time without serious damage to the wall partitions. Self-installation is possible if you have the necessary tools, instruments and an understanding of the procedure for the work to be carried out. Installation instructions from the manufacturer are usually included with bimetallic radiators.

As practice shows, polypropylene pipes (reinforced with fiberglass or aluminum) are most successfully combined with bimetallic radiators. When using pipes with deep aluminum reinforcement, the use of a shaver and stripping process become unnecessary. This significantly reduces the installation time for radiators. Less popular pipes for connecting bimetal radiators due to frequent leaks and blockages are iron (steel) and metal-plastic pipes in combination with collet clamps.

The installation of bimetallic heating radiators is carried out in place of the dismantled old ones after preparing the working area, which includes dismantling the pipelines from the riser, marking the place for installing a new radiator and drilling holes for the brackets.

— The distance from the bottom of the radiator to the floor level is taken in the range of 60-120 mm. If the radiator is installed above or below the specified height, the heat transfer rate is reduced. In this case, about 20 mm is left from the back of the radiator to the wall, and at least 50 mm should be left from the top of the radiator to the window sill to improve convection and ease of installation.

— Traditionally, radiators are mounted strictly horizontally under the window, in the center. Moreover, if there are already radiators in the room, their level must strictly correspond.

After marking (using building levels), holes are drilled on the wall for the brackets and the latter are secured with dowel nails and cement mortar. The brackets must be positioned so that the hooks pass freely between the horizontal collectors. In this case, the radiator housing will be securely fixed to the wall.

Before installation, the bimetallic radiator is equipped with everything necessary: ​​a Mayevsky valve (to remove excess air from the system) on top, adapters and fittings at the junction of the radiator with the pipes.

Radiator connection diagrams

— Traditional one-way circuit or side connection. With this option, the pipe supplying coolant to the radiator is connected to a pipe located on top of the radiator. Accordingly, the outlet pipe is mounted to the lower radiator pipe. Heat loss with this connection method is no more than two percent.

— Bottom diagram. It is practiced when the heating system is hidden or built into the floor covering. Coolant outlet and supply pipes are connected from opposite sides of the radiator, to the lower pipes. Heat loss reaches 12%.

— Diagonal pattern suitable for radiators with a large number of sections. The coolant supply pipe is connected to the upper branch pipe, and the outlet pipe is connected on the other side, from below.

After connection, the system is filled with coolant. To do this, the stabilizing valve is closed 2/3 to prevent water hammer.

Bimetallic radiators with a decorative coating (two layers of heat-resistant paint) cannot be cleaned abrasive materials and powders. It is recommended to paint no more than once every ten years. However, painting over the thermostat is strictly prohibited.

Video - Dismantling the old radiator and installing a bimetallic one

Bimetallic radiators, which are better?

Bimetallic radiators on the Russian market are fully certified, but they differ not only in the company and country of manufacture; there are small but very important nuances that are worth paying attention to when purchasing.

Price is one of the most important aspects that consumers pay attention to. But before judging the quality of a product by its price, you should understand what makes up the cost of a radiator.

The most inexpensive bimetal radiators presented by manufacturers from China and Russia. The price of one section does not exceed four hundred rubles. The low cost is due to the simplified design and material savings in the production of the product. The working pressure of such radiators is slightly lower than analogues produced in other countries, and the appearance is not perfect.

If we compare bimetallic radiators from the price category from 400 to 600 rubles for each section, we will meet two manufacturers from Italy (Global, Sira) and another brand from Russia – RIFAR. Radiators from these companies look more aesthetically pleasing and attractive when coated in snow-white or cream shades. Some models are equipped with an air vent or thermostat. There are different installation methods and some production nuances (center-to-center distance, configuration, etc.), which do not significantly affect the performance (power) and reliability of radiators. But they all managed to prove themselves on the positive side among satisfied consumers.

In a special series RIFAR MONOLIT models of radiators specially designed for operation at operating pressures of up to one hundred atmospheres are presented. If you need to choose a radiator with a rounded shape rather than a straight one, you should evaluate the quality and design of the series RIFAR FLEX. And if your choice fell on radiators with a copper core, which has increased resistance to corrosion, then models of such heating devices are presented by the company PILIGRIM.