The question of how many kilograms of copper is contained in the refrigerator most often arises among those who plan to scrap household appliances or are engaged in professional collection of non-ferrous metals. Owners of old Soviet units often assume that there is a real treasure hidden in their ZIL or Biryusa, but modern realities dictate completely different figures. To make a real profit, you need to clearly understand the design of the refrigeration unit and distinguish between the total weight of the equipment and the mass of useful non-ferrous scrap.
The main source of valuable metal is the compressor, which is often mistakenly called the engine. It is inside this sealed unit that the winding is wound, which is of interest to buyers. However, simply by weighing the entire refrigerator, you will not know its real cost, since the lion's share of the mass is made up of case steel, insulation and plastic. It is important to consider that yield of pure metal depends on the year of manufacture and model of the device, since production technologies have changed over the decades.
In this article we will look in detail at what the amount of copper depends on, how to extract it correctly and why the numbers on the Internet can be very different from reality. You will find out whether it is worth spending time disassembling for the sake of a few hundred grams or whether it is better to hand over the entire equipment. We will also touch on the topic aluminum alloyswhich are often confused with copper, and explain how to distinguish them at home without sophisticated equipment.
Compressor design and distribution of metals
The heart of any refrigerator is compressor-condensing unit. Visually, this is a black “pot” located at the lower rear of the case. Inside this sealed casing there is an electric motor that drives the piston group. It is the stator windings of this motor that contain non-ferrous metal. The design is made in such a way as to withstand high pressure and vibration, which makes it quite massive.
Inside the compressor housing, copper is used mainly in the form of varnished wire wound around the core. The number of turns and thickness of the wire directly affect the power and energy efficiency of the device. Older models, designed to work with R12 type freons, often had more massive windings. Modern units tend to miniaturize, which reduces material consumption. It is important to understand that in addition to copper, there is a lot of cast iron. electrical steel and cast iron.
In addition to the compressor itself, copper is contained in the sealed tubes of the heat exchanger (condenser and evaporator). In old Soviet refrigerators, these tubes were entirely copper, which made them very heavy. In modern technology produced after the 2000s, manufacturers have massively switched to aluminum or copper-plated steel, as it is cheaper. Therefore, when disassembling a modern refrigerator, you may not find copper tubes at all, except for those that fit directly to the motor.
⚠️ Attention: When you try to open the compressor yourself or depressurize the system, there is a risk of releasing residual refrigerant and oil. Some gases may be toxic or flammable, so work should only be carried out in a well-ventilated area, away from open fire.
Why is the copper in the winding varnished?
The varnish coating is necessary to insulate the turns from each other. If the turns touch, a short circuit will occur and the motor will burn out. When handing over scrap, this coating is burned or chemically removed to obtain pure metal, but this reduces the final weight by 10-15%.
Factors influencing the weight of copper in different models
The answer to the question of how much copper is in a refrigerator engine cannot be a single-digit number. There are many factors that dramatically change the final figure. The first and main factor is year of manufacture techniques. Soviet refrigerators produced before 1990 were extremely material-intensive. They used thick-walled tubes and abundant winding, which made them a valuable source of scrap.
The second factor is the energy efficiency class and country of origin. European and Japanese models, even modern ones, are often made better than their Chinese counterparts in the budget segment. They can use more non-ferrous alloys heat exchangers for better heat transfer. Budget models often suffer from the use of copper-colored steel tubes, which is a common pitfall for beginners in metal assembly.
The third factor is the volume of the refrigerator compartment. Obviously, a two-chamber giant with a volume of 350 liters will contain more metal than a compact single-chamber hotel refrigerator. However, the relationship is not linear: the increase in volume is compensated by thinner walls and a less powerful, but high-speed compressor. Therefore, in a large refrigerator there may not be proportionally more copper, but only a little.
Average indicators: copper content table
In order for you to roughly assess the potential of your equipment, we have compiled a summary table. The data is based on statistics from recycling plants and the experience of scrap metal buyers. Please note that the figures are given for complete compressor and for tubes separately, since it is often the entire units that are handed over.
The table shows average values. Actual weight may vary depending on the specific model and condition of the device. For example, a burnt-out engine may have burnt-out insulation, which will lighten its weight but contaminate the metal. It is also worth considering that in two-compressor models (where one motor is for the freezer, the other for the refrigeration compartment), the amount of copper doubles.
| Refrigerator type | Year of manufacture | Copper in the compressor (kg) | Copper in tubes (kg) | Total approximate weight (kg) |
|---|---|---|---|---|
| Soviet (ZIL, Biryusa) | 1970–1990 | 1.0 – 1.5 | 1.5 – 2.0 | 2.5 – 3.5 |
| Post-Soviet / Import | 1991–2005 | 0.7 – 1.0 | 0.5 – 1.0 | 1.2 – 2.0 |
| Modern (No Frost) | 2006–2026 | 0.4 – 0.7 | 0.1 – 0.3 (often aluminum) | 0.5 – 1.0 |
Analyzing the table, you can notice a sharp decrease in performance in modern models. This is due to the rising cost of raw materials and the desire of manufacturers to reduce costs. If you expect to make money by handing over a modern refrigerator, then focus on the minimum values. Scrap yield here is the minimum, and it is often more profitable to hand over the device as is, for the weight of ferrous metal and plastic.
The difference between Soviet and modern technology
Soviet industry did not know the concept of “saving non-ferrous metals” in the form in which we know it now. Refrigerators of those years were created with a huge margin of safety. The compressors were heavy and hummed loudly, but contained a lot of quality copper. The condenser tubes located at the rear were made of pure copper, which provided excellent heat transfer, but made the unit expensive to manufacture.
Modern technology is a triumph of engineering in reducing weight and size. Instead of heavy copper tubes, aluminum is used, which is lighter and cheaper, but conducts heat less well. To compensate for this, increase the heat exchanger area or use forced air circulation (No Frost). Modern refrigerator motors also contain less copper due to the use of more efficient magnets and optimized winding geometry.
⚠️ Warning: Do not try to determine tube material by color alone. Aluminum is often coated with bronze-colored paint or varnish to imitate copper. The best way to check is a magnet (copper and aluminum are not magnetic) or a spark test (copper does not produce sparks on impact, steel produces sparks).
In addition, in older models there were often brass fasteners and additional copper elements in the control system. In new refrigerators, plastic and cheap alloys rule the roost. Therefore, if you see an advertisement for the sale of an “old Soviet refrigerator for copper,” it may indeed be worthwhile, as opposed to dismantling modern equipment for the sake of a few hundred grams.
How to properly remove copper from a compressor
If you decide to do dismantling in order to obtain non-ferrous metal, you will need a certain set of tools. Simply sawing off the “pot” with a grinder is a bad idea, as you risk damaging the winding or getting tangled in the steel casing. The process requires accuracy and compliance with safety precautions. The first step is to disconnect the refrigerator from the network and let it cool.
To extract copper from the compressor, the following algorithm is usually used:
- 🛠️ Cut off the sealed copper tubes that fit the compressor body, leaving “stumps” 5-10 cm long.
- 🔨 Carefully knock down the top cover of the casing or saw it in a circle, being careful not to touch the insides.
- 🧵 Remove the core with the winding. Copper is located inside the stator grooves.
- 🔥 To facilitate extraction, you can heat the stator with a torch to burn off the varnish and insulation, but this will reduce the weight and contaminate the metal.
It is worth noting that modern compressors often use technology in which the winding is filled with a compound or tightly pressed, which makes its removal extremely difficult labor-intensive. In such cases, buyers may accept the entire compressor at a lower price or require its preliminary cutting. Pure copper windings are valued higher than scrap assembled with iron.
☑️ Tools for disassembly
Economic feasibility and disposal
When wondering how much copper is in the refrigerator, many hope for a quick profit. Let's do the math. Let's say you have an old refrigerator from which you extracted 2 kg of copper. At the average price of scrap (conditionally 600-700 rubles per kg, prices vary), you will receive about 1200-1400 rubles. But if you subtract the cost of gasoline to the collection point, the depreciation of the tool and the time spent (2-3 hours of work), the benefit becomes dubious.
Modern refrigerators contain so little copper (often less than 500 grams) that disassembling them is economically pointless. In this case, it is more profitable to hand over the entire unit as household scrap or ferrous metals. Large collection points do the cutting themselves and have equipment for efficient extraction of non-ferrous metals on an industrial scale.
In addition, it is important to remember about the environment. Refrigerators contain freon, which when released into the atmosphere destroys the ozone layer. Professional disposal involves removing the gas safely. By releasing gas when disassembling it yourself, you are harming nature. Therefore, if the goal is not sporting, but financial, it is better to consider the option of handing over the entire device.
Frequently asked questions (FAQ)
Exactly how much copper is in a compressor from an Atlant or Indesit refrigerator?
In compressors of the Atlant brands and "Indesit", produced in 2000-2010, contain an average of 0.6 to 0.9 kg of copper in the windings. The exact amount depends on the motor power (usually 1/5 or 1/4 hp).
Is it possible to hand over the entire refrigerator as non-ferrous metal?
No, the entire refrigerator will be accepted as household scrap or ferrous metal, since non-ferrous metal (copper, aluminum) makes up a small part of the total mass. They will not pay for the full weight of non-ferrous metal; cutting is required.
Where is there copper in the refrigerator besides the engine?
Copper (or a material similar to it) is located in the heat exchange tubes (condenser at the back, evaporator inside). In older models it is pure copper, in newer models it is often steel or coated aluminum. There is also copper in electrical wiring and control boards.
Is it true that there is more copper in old refrigerators?
Absolute truth. Soviet equipment was produced without saving resources, so the copper content in compressors and tubes of refrigerators produced before 1990 can be 2-3 times higher than in modern analogues.