Comparison of heetal and aluminum heating radiators

Which heating radiators are better aluminum or bimetallic

Designing a heating system or just going to make repairs in a house or apartment, we think about buying radiators. If we take into account that today the shops are simply clogged with all kinds of products, then the purchase becomes difficult. In addition, technology is constantly being improved, so that the assortment is constantly growing. Which radiator is better, aluminum or bimetallic? Since these two varieties of heating batteries are the most common, we will try to understand their differences. We will judge aluminum and bimetallic radiators by the following criteria:

  • Resistance to pressure and hydraulic boards;
  • Stability to corrosion;
  • Degree of heat transfer;
  • Temperature excerpt;
  • Ease of installation;
  • Price;
  • The scope of application.

Consider these radiators in more detail.

To decide on the choice, they compare the main technical parameters. This is the only way to choose the most accurate batteries for a specific heating system as accurately as possible. After a thorough study of parameters, the difference in bimetallic and aluminum heating radiators will immediately be visible even to an inexperienced person.

Comparison of the parameters of aluminum and bimetallic heating devices will help to find out the difference between them

comparison, aluminum, heating, radiators

The efficiency of heating depends on the parameter Each section is able to give up to 200 watts of thermal energy.

Bimetallic heating devices in a similar way give heat, only thermal energy due to a steel core, they radiate less. It will take longer to wait until the radiator warms up and heat begins to feel in the room.

comparison, aluminum, heating, radiators

Which batteries hold pressure better

Bimetallic batteries win the pressure. Steel core allows them to operate in central heating of apartment buildings Sections will not be destroyed even from the hydraulic jacket.

Aluminum radiators, depending on the model, are designed for working pressure 6-16 atmospheres. Reinforced batteries are able to withstand 20 atmospheres. The sections are not adapted to the hydraulic boards. With such indicators, radiators are best used for home autonomous heating.

Comparison of the maximum temperature of the coolant

The parameter is not so relevant, since the coolant is rarely brought to a temperature above 100 O C. The exception is only boiler rooms with steam boilers, but they are more often found in production. However, for comparing radiators, you need to know that aluminum models withstand the maximum heating of the coolant to 110 ° C, and bimetallic batteries. Up to 130 ° C.

Durability and life

Aluminum radiators are able to last up to 15 years. However, the conditions are not always perfect. For this reason, the period is sometimes reduced to 10 years. Bimetallic devices of quality production are guaranteed to serve 20 years. Under good conditions, the life of the operation is able to increase.

Simplicity of installation

There are no differences by the simplicity of installation. The configuration of aluminum and bimetallic devices is the same. The mass varies a bit, but not significantly. The only nuance is the increased strength of bimetallic models. You can pack without fear that the steel core will crack from excessive overstrain. Aluminum products in this regard are slightly lost.

Comparison of the cost of radiators

If we compare radiators with the same number of sections, then aluminum products are about 30% cheaper. However, the price also depends on the manufacturer. If you take a cheap Chinese fake, then such a bimetallic radiator can cost cheaper from the branded aluminum battery. However, we are not talking about the quality of the product. It is reasonable to compare only branded or Chinese fakes among the cost.

Comparison of appearance

It is difficult to distinguish new radiators outwardly. They have a stylish design, compact, on the front side resemble the panel. The case is usually painted in classic white. Outwardly only sizes are noticeable. In each product you can quickly calculate the number of sections.

Bimetall or aluminum. How to choose the right radiator.

Bimetallic radiators quickly heat up and hold heat longer;

Bimetallic radiators are stronger than aluminum;

Aluminum radiators cool faster and allow you to easily configure the temperature regime;

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The bimetallic elements of the heating system are more expensive, and aluminum radiators are available to every family;

From the point of view of design, both types of radiators look modern and aesthetically pleasing, which means that they can be used to arrange any rooms.

From the above features it follows that bimetallic radiators are characterized by greater heat transfer. They quickly heat the room and hold a given temperature regime for a long time for a long time. But it can be uncomfortable. For example, guests came to the house. In a heated room will become very uncomfortable and stuffy. In this case, aluminum radiators are more profitable. They cool quickly, as they are characterized by low heat capacity. Therefore, using such a heating system, adjusting the temperature regime is easy and simple.

But it is also worth noting that aluminum is a soft metal that can easily bend. So, aluminum radiators are less durable than their bimetallic competitors. In addition, steel is considered more resistant to corrosion and mechanical destruction than its competitor. Aluminum. All these characteristics ultimately increase the cost of bimetallic radiators. And aluminum devices remain accessible in terms of the price range. The appearance of both radiators and their modern powder coating make it possible to harmoniously place them in any interior and house.

But in general, bimetallic radiators are gaining more and more popularity, displacing aluminum. The bimetallic radiator section consists of a steel pipe, poured under high pressure aluminum alloys, t.E. Inside. A steel frame, and outside. “shirt” of aluminum. Thus, such a radiator combines the best properties of two metals. High heat transfer of aluminum and high steel strength.

The main advantages of the bimetallic over an aluminum radiator:

The bimetallic radiator is not afraid of an aggressive environment, for example, water with high Mloty and mud impurities. And dirty water is the trouble of most Russian cities.

Withstands very high pressure up to 35 atmospheres (aluminum. 10-15 atm), so it is often installed by the central heating system in multi-storey buildings.

It has the best heat transfer. The power of the section of the bimetallic radiator 204 watts, and in aluminum. 180-190 watts.

Our company offers customers bimetallic radiators Rifar.

Rifar radiator is evident for working in water and steam heating systems, with the maximum coolant temperature 110 C!

The Rifar radiator section consists of a steel pipe, poured under high pressure aluminum alloys with high strength and excellent foundry properties. The resulting monolithic product with thin nuts provides effective heat transfer, with the maximum margin of strength.

Characteristics: Rifar radiator has high technical indicators and characteristics:

  • Working pressure: 20 atm.;
  • The maximum temperature of the coolant: 110 ° C;
  • Fully adapted for use in Russian central heating systems;
  • Press pressure 30 atm.;
  • Color. White (RAL 9010);
  • Radiators are insured by Ingosstrakh.

What does the phrase “insured by Ingosstrakh” mean ” ?

This phrase means that “the manufacturer undertakes during the warranty period (10 years) to compensate for harm to health, life and property caused as a result of using the goods. Containing constructive, production and/or other disadvantages, as well as goods, which is presented with incomplete and inaccurate information or goods, the safety of which does not comply with the rules and rules “.

It was an excerpt from the insurance certificate. If you transfer it from legal into Russian, it can be said that if the sold radiator is defective or inappropriate to the declared characteristics and because of this the buyer, or his property, or property of neighbors, the manufacturer undertakes to financially compensate for this harm.

In general, if the radiator was drunk and the parquet and furniture in the room were injured, as well as, for example, the apartment is lower, then the manufacturer will compensate everyone for the damage. Limit. 30 thousand.Euro.

Tips for the correct installation of radiators:

comparison, aluminum, heating, radiators

Central heating Radiators types, what the heck is k1 p or type 11 ect.

Heating devices, regardless of their type and material, is preferable to place under the window. This is done so that the warm air rising from them blocks the movement of cold air from the window. It is desirable that the width of the radiator located under the window is at least 50-75% of the width of the opening.

In order for the heating of the room to occur rationally, the following parameters should be observed: the distance from the heating device to the wall. At least 3 cm, to the windowsill and to the floor-10-12 cm.

Go to section: Heating and ventilation → Bimetallic Rifar radiators

Call us right now if you have questions after reading the article or need additional consultation. We will definitely help with the solution of your issue. 7 (812) 318-318-2

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Chemical stability

The difference between aluminum and bimetallic radiators in chemical resistance is quite significant. Here aluminum also loses. With an increase in the level of PH of the coolant more than 8, it is quickly corroded. Over, such a high level of pH is the norm for water, which circulates in our central heating systems. Steel in chemical resistance is not considered a more reliable alloy. Bimetallic devices are much longer and more efficiently opposed by corrosion.

The question of which heating radiators are better: aluminum or bimetallic, should be considered in the context of the type of mounted system. In individual systems, there are no excessive water pressure, there are no changes and hydraulic boards, and the quality of the coolant is controlled and maintained at a high level by the user. Therefore, aluminum radiators are well suited for such systems. They will last at least 10 years, providing effective and economical heating of the premises.

For centralized systems, the use of aluminum batteries is contraindicated. Therefore, in this case, bimetallic radiators are better suited, which well withstand difficult operating conditions. They are much more expensive, but their service life is increased by about 2 times.

Often users are interested in the question of whether aluminum and bimetallic radiators in the house can be combined. There are no contraindications in this regard. The use of bimetallic and aluminum radiators in one system is quite allowed, however, its operational characteristics must satisfy the parameters of aluminum batteries, which are a weaker link. In other words, you can put bimetallic radiators in a system designed for aluminum batteries, and not vice versa.

Comparative analysis of bimetallic and aluminum radiators

For all the external similarity of two types of products between them, there is a rather big difference regarding many signs and characteristics. Often, the consumer is faced with the problem of determining which heating radiators are better. Aluminum or bimetallic. Each of these two types of heating batteries has its pros and cons of.

In this article, we seek to convey to the consumer all the advantages and disadvantages of these types of heating radiators. Comparing their qualitative characteristics with local conditions of their own or centralized heating system, it will be easier for the consumer to make a choice in favor of a particular model.

Features of the autonomous heating system

Installation of an autonomous heating system (ASO) of private housing construction allows you to use many of its advantages compared to a centralized analogue, despite some disadvantages.


  • One water heating boiler can provide a house with radiator heating, warm floors, supply hot water to the kitchen and bathroom.
  • Heating fully works regardless of the seasonal disconnects of the central heating system. This allows you to maintain a comfortable microclimate in the house during a sharp drop in temperature in the off.Season.
  • Closed contours of heating and hot water supply allow the use of clean coolant without harmful impurities. To do this, filters of rough and fine water cleaning are set into heating systems.
  • The owner of the house himself draws up a schedule and carries out repair and preventive work to maintain a house heating system.
  • The autonomous heating system is the only alternative to central heat supply for suburban cottages, large mansions and cottages.
  • During the absence of the owners of a private house, you can put the mode of operation of the heating system on the minimum heating temperature of a private house, which will save the cost of heating.
  • The owner of the house can independently choose a class, type of heating radiators and determine their number.
  • There is no threat of a hydraulic jacket.
  • The ability to connect to the Smart House system.


With all the advantages, autonomous heating has a number of minuses:

  • It is necessary to spend time and money on the arrangement of ASO, and the owners of the apartments receive a ready.Made heating system;
  • Carrying out maintenance and repair of ASOs are a direct duty and care of the owners of housing, and in an apartment building this “lies on the shoulders” of the service company;
  • You need to constantly control and adjust the temperature regime.

The design of bimetallic radiators

These products combine the best qualities of two metals. The case consists of an aluminum alloy with silicon. Silumin. From above, its surface is covered with a persistent paint that retains the color for the entire period of operation. Internal collectors and channels connecting them are made of steel. The coolant is in contact only with persistent steel elements.

Water enters the case, circulates it, giving heat, and goes into the return. Thermal radiation and convection flows heat the air in the room.

Types of bimetal batteries:

  • Sectional. Consist of several sections connected by nipples with carvings and sealing gaskets. In modern thermal devices, heat.Resistant polymers are used, so the water part does not flow at the joints and is not afraid of pressure. Sectional constructions can be increased, disassembled and repair.
  • Monolithic. Consist of silumin corps and an integral steel frame installed inside. Unlike sectional, they have no joints, so they maintain very high pressure. Monoliths are non.Combination. When failing, the unit is replaced. When buying, you need to carefully calculate the power, since it will not work to increase such a model. Another minus is a relatively high price.
  • Incomplete bimetallic. In such models, only longitudinal channels are made of steel, and collectors are made of silumin. This design costs the manufacturer cheaper, but for the consumer, the savings ends poorly. Water is in contact with aluminum inside the collector, and at the junction of two metals there is a chemical reaction with the release of oxygen. Air traffic jams are formed, the metal parts are destroyed, the product begins to flow. Knowing this, manufacturers are limited to a 5-year warranty period.
  • Full bimetallic. Total Bimetall. In such thermal devices, all parts in contact with water are made of steel. The coolant does not contact silumin, so the metal does not corrode. Total Bimetall is more expensive than combined options, but the costs will pay off long.Term operation and reliability. The manufacturer gives a guarantee of 15 years, and the service life is 25 years.
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Advantages of bimetallic design batteries:

  • High resistance to pressure drops and hydraulic boards.
  • Weak sensitivity to low quality coolant. Bimetall withstands acidity above 8.5 and does not destroy from contaminated fluid.
  • Corrosion resistance. Fluid proceeds through steel tubes that do not react with the coolant. With the rest of the device, it does not contact.
  • The maintainability of sectional options.


  • Higher price and greater weight compared to aluminum.
  • The worst thermal conductivity compared to silumin.
  • Small water chamber. The incoming coolant cools faster and warms worse, compared to aluminum.

Which bimetallic batteries are better

The best option is sectional constructions from complete bimetall. It is reliable, durable, if necessary, batteries can be built, connected or repair.

  • Monolithic options expensive and non.Combination. The advertised increased resistance to colossal pressure indicators is not needed even in high.Rise.
  • Incomplete bimetallic constructions. An unsuccessful option. They are unreliable and serve less than others.

About the ability to withstand high pressure (especially water drivers)

The worst of all is an aluminum product. The working pressure of this material is up to 16 atmospheres. And this is not enough to withstand its jumps in the heating system.

Hydrodar. A large one.Time pressure jump. Aluminum radiators cannot be saved from him, they will scatter into fragments, like shells. It’s good if this does not happen in the heating season. Otherwise you cannot avoid hot water flood. That is why aluminum radiators in multi.Storey buildings are better not to use.

Bimetallic batteries, due to a strong steel core inside, can withstand the pressure of a large pressure of up to 40 atmospheres. With a lightning.Fast opening or closing of the crane of the accident pump, there will be no. In terms of reliability in conditions of system instability, when hydraulic boards are inevitable, only bimetall should be used.

But this is important to consider for apartments with the central heating system, since in the pipes of a private house there is no high pressure and, accordingly, a threat to further flood.

comparison, aluminum, heating, radiators

The dependence of the heat transfer of the radiator on the temperature of the coolant

The passport thermal power of one section of the radiator is calculated for the standard values ​​of the temperature of the coolant at the input (90 0 C) and the output (70 0 C) of the heating device. These conditions relate to centralized heat supply networks.

In autonomous heating systems of private houses, the temperature difference may be different. In this case, heat transfer 1 can differ significantly from the values ​​declared by the manufacturer. The thermal capacity of the heating device is in direct proportional dependence on the temperature of the coolant in the supply pipe. The larger it is, the greater the heat transfer of the battery and vice versa, the less heating of the coolant, the less the thermal power of the radiator becomes.

To exclude unexpected jumps in the temperature regime, thermostats are used, which are cut into the input pipeline into the radiator. Thermal drives are manual adjustment, semi.Automatic and automatic, controlled online.

Алюминиевые радиаторы. Обзор.

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