What is the difference between aluminum heating radiators from bimetallic and which radiator to choose?

With so many options on the market, selecting the ideal heating system for your home can be difficult. The type of radiator that best meets a homeowner’s needs is one important decision that they must frequently make. We’ll go over the main distinctions between bimetallic and aluminum heating radiators in this post to help you choose wisely for your insulation and heating requirements.

Let’s examine these radiators’ composition first. Aluminum is a lightweight and effective heat conductor, and aluminum radiators are made entirely of aluminum. Conversely, bimetallic radiators are made of two metals, usually an aluminum alloy coated over steel or cast iron. By combining the benefits of both materials, this combination seeks to provide a compromise between heat transfer efficiency and durability.

Heat conductivity is an important consideration when deciding between bimetallic and aluminum radiators. Because of their superior heat conductivity, aluminum radiators heat up rapidly and disperse heat evenly throughout the space. They are perfect for rooms like living rooms or bedrooms where instantaneous heating is required because of their quick response time.

Nonetheless, bimetallic radiators are highly valued due to their durability and toughness. The aluminum covering improves the efficiency of heat transfer, while the steel or cast iron core offers strength and durability. This combination produces radiators that are suitable for demanding environments such as commercial buildings or industrial settings because they can tolerate high pressures and temperature fluctuations.

The visual appeal and design versatility that each type of radiator offers is another important consideration. Aluminum radiators’ sleek, contemporary designs go well with modern interior decor because of their simplicity. Because they come in a range of hues and textures, homeowners can select a style that perfectly complements their interior design.

However, because of their steel or cast iron core, bimetallic radiators might appear more conventional. Even though they might not be as versatile in terms of design as aluminum radiators, they can give older or period properties a timeless charm. Furthermore, certain bimetallic radiators have elaborate decorations and detailing that improve the room’s aesthetic appeal.

In conclusion, a number of considerations, such as heat conductivity, durability, and aesthetic preferences, influence the decision between bimetallic and aluminum heating radiators. Bimetallic radiators provide strength, durability, and a more conventional appearance, while aluminum radiators excel in quick heat distribution and contemporary design. Homeowners can choose the radiator that best meets their needs for insulation and heating by being aware of the differences between these options.

Which radiator to choose

The following two types of radiators are the ones that will be covered in this article:

  • aluminum;
  • Metal.

The former are made of an alloy of aluminum and silicon, known as silumin, rather than pure aluminum. It is advisable to purchase these batteries using names that are produced domestically. The low quality of water in Russian heat systems is considered in their manufacturing process. It is frequently supplemented with various chemical additives intended to minimize heat loss during water circulation. This situation makes it possible to produce alloying alloys with less reactive properties.

Two methods are used to produce aluminum radiators:

  1. Polding under pressure

The enhanced stability of completed goods produced with this technology against external damage and hydraulic boards is one of its characteristics. This occurs as a result of the installation’s internal voltages being distributed uniformly. It is distinguished by precise forms as well.

  1. The blanks are squeezed through the matrix

We refer to this technique as "extrusion." Once each block is prepared, the press will be used to join them together. Although this method of manufacturing is far less expensive than casting, the operational indicators of the final product are substantially lower. Due to its inefficiency, the production of batteries using extrusion has long since been discontinued overseas.

Extrusion-based manufacturing of heating radiators

Interior radiator

Take note! Regardless of the options above, make sure to focus on this moment: Aluminum instantly starts to collide when it comes into contact with any other metal within the water supply. This process moves extremely quickly because the pipes contain hot water. As a result, reinforced polypropylene pipes must be used to connect the battery to the heating system.

Radiator sections are joined to one another by means of nipples and seals. It’s critical to understand which fluid functions as a coolant for installed batteries in order to choose the appropriate material for you. She could be:

  • Ordinary water. In this case, simple rubber products that are quite reliable for good operation of batteries are perfect;
  • Antifreeze on glycerin, ethylene glycolia or propipylene glycolia. In addition to it, it is best to purchase paronite seals, since rubber is quickly destroyed under the influence of the above chemical compositions.

Radiator section connections

One of the radiator’s aluminum dimensions

Advantages and disadvantages of aluminum batteries

With good reason, aluminum radiators are among the most widely used on the market. They overtook the leaders because of the many indisputable benefits of their operation:

  • batteries very quickly warm the air of the premises;
  • Those models that were cast under pressure, during use can be equipped with additional sections;
  • increased working pressure: for standard models, it is approximately 10 – 15 atm., and for reinforced – reaches 25 atm.;
  • the ability to set a heating temperature comfortable for you;
  • Small dimensions of the device allow you to save more free space in the living room;
  • The installation of batteries does not require much effort due to the small weight of the case;
  • An aluminum radiator can become a stylish addition to the modern interior, the main thing is to beat it correctly;
  • The cost of such installations is available to everyone.

The choice to have an aluminum radiator appear

But as they say, there are two sides to a coin. Other disadvantages of the radiator type that is being presented are:

  • The serviceability of the aluminum case directly depends on the quality of the coolant. In the case when the water pH level becomes higher than 8, corrosion reactions will begin in places of joints. Therefore, if you are not sure as a liquid that will circulate inside the heating system, it is better to abandon this option;
  • Private leaks in the places of connection of the case sections. Low -quality products never serve for a long time, therefore, in order to avoid such a trouble, when buying, give preference to more expensive products;
  • Mandatory installation of the air vent. It is needed to filter hydrogen accumulating inside aluminum radiators;
  • Small operational period of the air vent. Unfortunately, the device will serve you for no more than 15 years, after which you will have to replace it with a new.
  • it is necessary to participate a specialist when installing radiators. Errors made during independent installation will lead to the rapid failure of the device. All money saved on a professional repairman will go to the purchase of new batteries, but you still have to pay for work.

Radiator as an internal component

Features of bimetallic radiators

A bimetallic radiator is the other choice you have for the store. "Two" is the meaning of the prefix "bi" in the word "bimetallic." This kind of battery gets its name from the fact that it is made of two metals: aluminum and steel.

Let us now focus on the positive attributes of this kind:

  • Steel in the material from which the case is made will perfectly withstand any jumps in water pressure. She is also not subject to corrosion. These properties of the metal provide high strength and for many years of the correct service of the device;
  • a steel sheet provides serious protection of the case from external mechanical damage;
  • active circulation of the coolant;
  • Aluminum coating will provide quick warming up in the living room;
  • The operating pressure of the battery can reach 40 atm.;
  • The maximum value of the possible temperature of the coolant is approximately 130 degrees, while aluminum products have only 110;
  • Persistent colorful coating of the case. This stability is achieved due to the two -stage staining mechanism:
  1. First of all, the product is placed in a staining solution and completely covered with a paint;
  2. Then another polymer layer made on the basis of epoxy resin is sprayed on top of the dried first staining. The radiators processed using this technology not only look very aesthetically pleasing, but also acquire more clear geometric forms;
  • easy installation and transportation, especially if you resort to the help of professionals. The device of bimetallic batteries is no more complicated than that of simple aluminum, however, their installation is also better to entrust professionals. How correctly the batteries will be installed, they will last you for so long;
  • the ability to build additional sections directly at your house. However, if you admit that you still want to increase their number, when buying, pay attention to the design of the radiator case. Some of the models presented on the market have a whole steel core, so they do not divide into sections.

The bimetallic radiator section

Among the first things to appear was the bimetallic radiator.

We focus on the following drawbacks of bimetallic devices:

  • Aluminum, used in pairs with steel loses its high heat -rolling properties. Due to the presence of a steel core inside the battery, you will have to wait for the air heating to the desired temperature a little longer than you are used to;
  • increased price. Since the price of steel is higher than for silicon, the cost of bimetallic batteries also increases by about 30% compared to aluminum;
  • Increased operating costs. Since bimetallic devices boast of increased hydraulic resistance, the amount of energy spent on water circulation will also increase;
  • Incorrect use of radiators can lead to corrosion of its steel parts. This will certainly happen if the bimetallic batteries are installed in your cottage, which is not used in winter. As soon as the heating autumn season comes to an end, it will be necessary to carry out the procedure for draining water from the system. It is because of this that corrosion processes will begin: simultaneous contact of steel with air and water instantly launches them.
  • A small passage hole of the tube inside the device is subject to rapid clogging. This reduces the operational period of the device.

Crucial! Because steel and aluminum have different coefficients of thermal expansion, violent crackling starts to occur from the battery after a short while. This noise in no way indicates that there was a problem with the equipment. You don’t need to worry about your health!

These days, radiators can function even in rooms with higher air humidity levels on a regular basis. There is no chance of corrosion on their surface. The radiator’s leaf steel, which provides a protective layer over the device’s casing, gives it this resistance to the harsh effects of the outside world.

There are small-section water channels inside the bimetallic radiators. Owing to their small size, they are quickly filled with hot water from an independent boiler or a centralized water supply system.

One of the best functional upgrades to the apartment, according to construction experts, is the installation of bimetallic batteries that are purchased and installed during repair. Over time, the money spent on these gadgets is fully repaid by their use.

Choosing the correct radiator is essential for efficiently heating your home. Radiators made of aluminum and bimetallic materials are two common choices, each with pros and cons of their own. Aluminum radiators are perfect for spaces that need to heat up quickly because they are lightweight, affordable, and have a rapid heat-up rate. Bimetallic radiators, on the other hand, offer efficiency and longevity by fusing the strength of steel with the heat conductivity of aluminum. Think about things like your spending limit, the amount of heat you require, and the particular needs of your house when choosing between the two. The decision ultimately comes down to personal taste and what suits your particular circumstances the best.

How to distinguish in appearance a bimetallic heating radiator from aluminum?

You’ve already made up your mind regarding which radiator to purchase after we discussed the benefits and drawbacks of each specific model. The most important thing when making a purchase is to avoid confusing the products, as this will waste all of your time trying to weigh the benefits and drawbacks, leaving your fate up to chance.

You must be able to tell immediately which radiator is which if two different radiators are placed in front of you. An aluminum radiator differs from a bimetallic radiator primarily in that it is composed entirely of aluminum, i.e., the incoming and output pipe (allotment) that connects to the main heating system should be made of aluminum. You can tell what kind of metal it is just by tapping it!

How to distinguish the type of metal by knocking

A knock on steel will produce a more sonorous, "metallic" sound, whereas a knock on aluminum will produce a more deaf sound. This is something that you should hear once and keep in mind forever. You can explain it in words, but the only way you can truly understand the difference is by experiencing it firsthand. Locate an aluminum and steel piece at home, then use different techniques to knock on it:

  • fingers;
  • nail;
  • hammer;
  • plastic stick;
  • wooden stick.

I promise you, there will be a noticeable difference!

You can perform the same manipulation in the store, familiarizing yourself with the "sounds" of various metals.

The second method

Examine the radiator’s structure closely. For bimetallic radiators, check the visual "integrity of the structure" on the back side. You should be able to see the "not integral" structure where the coolant passage passes through. It is evident from the outside that aluminum has overflowed the steel inner pipe.

Video – how to choose a bimetallic radiator

Comparison of the fundamental differences of aluminum and bimetallic radiators

Both of the radiators that are being presented have a very similar appearance. Their shape is flat and they are formed like metal rectangles. Both types’ structures have anywhere between six and twelve sections. Their respective rates of heat transfer also nearly coincide, totaling roughly 170-200 W.

These days, it’s very common to beat up every little home accent and turn it into a fashion piece. This also holds true for any bimetallic batteries that are installed in your house. Products are always painted in neutral white or gray on the outside. Standard store options, however, can be independently enhanced by applying specialized bright paint to them. Put your favorite pattern on the radiator and breathe in the unique atmosphere that fills the space.

Choices for the manufacturer’s color scheme

Decorative heating radiators

Crucial! Get advice from experts before making any paint purchases. To protect your health, it’s critical to select items that are non-toxic and heat-resistant.

Thus, let’s sum up and designate the primary distinction between the functioning of bimetallic and aluminum batteries as follows:

  • Aluminum batteries are well suited for installation in country cottages and ordinary private houses. It is there that it is necessary to receive maximum heat transfer from radiators, especially in winter. Provided for low pressure and high quality coolant – this is the ideal option for heating of country housing equipped with an autonomous heating system. It makes no sense to install bimetallic sections, as they can quickly fail;
  • Bimetallic batteries were developed just for operation in a city centralized heating system. Impurities from aggressive chemicals have been added to the water circulating on them for a long time to reduce heat loss. The steel core of bimetallic installations easily copes with these impurities, and also stubbornly withstands hydrodynamic blows and pressure drops in the system. That is why it is better to use this variety for installation in an apartment, office, etc.D.

Video – choice between bimetallic and aluminum radiator

Feature Aluminum Radiators
Material Made entirely of aluminum, lightweight and corrosion-resistant.
Heat Efficiency Quick to heat up, but also cool down rapidly.
Cost Generally less expensive compared to bimetallic radiators.
Compatibility Suitable for low-temperature systems like underfloor heating.
Maintenance Easy to clean but can be prone to damage from water quality issues.
Appearance Sleek and modern design, often available in various colors.
Bimetallic Radiators
Material Combines aluminum with steel, offering durability and efficiency.
Heat Efficiency Slower to heat up but retains heat longer, providing more stable temperatures.
Cost Typically more expensive due to the combination of materials.
Compatibility Works well with high-temperature systems and larger spaces.
Maintenance Less susceptible to water quality issues, offering better longevity.
Appearance Varies but often more traditional in design compared to aluminum radiators.

It is important to understand the distinctions between aluminum and bimetallic options when selecting radiators for your home’s heating system. Aluminum radiators are renowned for their rapid heat conduction and lightweight construction. Their rapid heating efficiency makes them perfect for areas like kitchens and bathrooms where quick heating is needed.

Conversely, bimetallic radiators combine the benefits of steel and aluminum. Compared to pure aluminum radiators, they are more robust and corrosion-resistant. Additionally, bimetallic radiators retain heat better, keeping your house at a more constant temperature over time.

In the end, the type of radiator you select will depend on your personal preferences and needs. Aluminum radiators can be a better choice if you value quick heating and have a tighter budget. Nonetheless, purchasing bimetallic radiators might be the best course of action if long-term performance and durability are crucial considerations.

In addition, take into account elements like your climate, your budget, and the size of the room you need to heat. Speaking with a heating specialist can also give you important advice about the kind of radiator that would work best in your house.

In conclusion, there are benefits and drawbacks specific to both aluminum and bimetallic radiators. Selecting the ideal radiator for your home’s heating and insulation needs will be easier if you are aware of these variations and take your unique needs into account.

Video on the topic

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Anna Vasilieva
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