The question of how much copper is contained in one refrigerator often arises among those who plan to sell household appliances for scrap or are engaged in professional waste recycling. Refrigeration equipment is not just a white box for storing food, but a complex engineering structure containing a significant amount of valuable resources. Non-ferrous metalssuch as copper form the basis of heat exchange systems, making the old unit a valuable raw material for recycling.
However, the exact answer depends on many factors, including the year of manufacture models, type of refrigerant and design features of the compressor. In old Soviet units, the amount of precious metal can differ significantly from modern energy-efficient models. The average refrigerator contains from 1 to 3 kilograms of pure copper, but this figure varies depending on the specific design.
Understanding the internal structure is necessary not only for assessing the profit when selling scrap, but also for correct recycling. Improper disassembly may result in the release of harmful substances or damage to equipment that cannot be repaired. In this article we will look in detail at where exactly the copper is hidden, how to remove it and what to look for when estimating the weight.
⚠️ Attention: When disassembling the refrigerator, remember that there may be refrigerant in the circulation system. Some old gases (freons) destroy the ozone layer, and new ones require special disposal. Do not release the gas into the atmosphere - this can be hazardous to health and is prohibited by law.
Main sources of copper in the design of a refrigerator
To understand where copper comes from, you need to look “inside” the unit. The main consumer of this metal is compressor-condensing unit. This is where gas compression and cooling processes occur, requiring efficient heat transfer. Copper is used due to its exceptional thermal conductivity and corrosion resistance.
The first and most obvious element is copper pipelineconnecting the compressor to the evaporator and condenser. In modern models, some of the tubes can be replaced with aluminum or steel with copper coating to reduce the cost of construction, but in high-quality equipment, copper remains the standard. The length and diameter of these tubes directly affect the total weight of the scrap.
The second important source is the compressor motor windings. Inside the sealed housing there is a motor, the stator of which is wound copper wire. The weight of this winding makes up a significant part of the total copper in the device, but it is almost impossible to remove it in its pure form without damaging the housing.
- 🔹 Copper refrigerant tubes are the main source of pure high-quality scrap.
- 🔹 Compressor windings - contain a lot of copper, but difficult to remove.
- 🔹 Heat exchangers (condenser and evaporator) - can be made of copper or bimetal.
- 🔹 Electrical wiring - power cables and internal wiring contain small amounts of copper.
The weight of copper in the compressor: hidden potential
The compressor is often called the heart of the refrigerator, and from the point of view of the content of non-ferrous metals, this statement is true. Inside the sealed casing is hidden an electric motor that drives a piston or inverter system. Stator winding made of varnished copper wire.
The weight of copper in the compressor depends on its power and volume. In medium-power household refrigerators, the weight of the winding can range from 300 to 700 grams. However, it is worth considering that the compressor weighs about 10-12 kilograms as a whole, and copper makes up only a small part of the total mass of the ferrous metal of the casing.
To extract copper, the compressor must be opened by sawing the body with a grinder. This is a labor-intensive process that rarely pays off when delivering a small amount of equipment. Most often, compressors are sold as a whole electric motor scrap, which is estimated according to a separate price list.
| Compressor type | Approximate weight of copper (winding) | Total weight node | Difficulty of extraction |
|---|---|---|---|
| Single-phase piston | 300-500 g | 9-11 kg | High |
| Inverter | 400-600 g | 10-12 kg | Very high |
| Twin-engine (old) | 600-800 g | 15-18 kg | High |
| Commercial | 800-1200 g | 20+ kg | Average |
It is important to note that in some modern models, manufacturers can use aluminum for windings in order to save money, although this is less common in refrigerator compressors than in air conditioners. You can check the material using a magnet (copper and aluminum are not magnetic, but a color and weight test is needed) or visually if you have access to the contacts.
Why is copper in a compressor so expensive?
Copper in the form of a winding wire (enamel wire) is valued slightly lower than a pure copper pipe (M1), but is still considered expensive lomu. However, the time and energy costs for cutting the body and burning off the varnish often make this operation unprofitable for a single copy.
Pipelines and heat exchangers: where to look for clean scrap
The most valuable part of the refrigerator from the point of view of scrap delivery is the system of pipes and heat exchangers. This is where pure copper brand M1 or M2 is located, which does not require complex cleaning of varnish and insulation. The tubes going from the compressor to the condenser and then to the evaporator are usually made of copper.
The condenser located at the back of the refrigerator (black grille) is completely copper in older models. In modern budget models, manufacturers often replace copper tubes with steel ones, and the grille itself is made of steel with aluminum fins. You can determine the material by the color of the cut or using a magnet.
The evaporator inside the freezer may also contain copper, but aluminum is more common. If you see shiny silver plates or tubes, it's aluminum. The reddish-red color indicates the presence of copper. The weight of this part varies from 200 to 800 grams depending on the dimensions of the chamber.
- 🔸 Heating tube around the perimeter of the door - often contains a thin copper core to prevent condensation.
- 🔸 Capillary tube - a very thin copper tube running along the main line, weighs a little, but this is pure copper.
- 🔸 Connecting fittings - can be brass (an alloy of copper and zinc), which is also appreciated.
⚠️ Attention: When dismantling tubes, use only pipe cutters or special scissors for copper. Do not use an open flame to anneal copper indoors - when the varnish insulation and freon residues burn, toxic substances are released.
Differences in copper content: old vs new models
The evolution of refrigeration equipment directly affects the amount of non-ferrous metals in the design. Soviet refrigerators, such as ZIL, Biryusa or Saratov, were famous for their maintainability and the use of natural materials. In them, copper made up a significant part of the heat exchange system.
Modern models, especially those released after 2010, have undergone strict cost optimization. Manufacturers strive to reduce the weight of the product and the price of raw materials. Therefore, in new refrigerators, copper tubes are often replaced with aluminum or steel with copper plating, and the capacitors are made hinged and less material-intensive.
The type of refrigerant also affects. The transition from freons R12 and R134a to new environmentally friendly mixtures (R600a - isobutane) made it possible to reduce the diameter of the tubes and the amount of gas charged, which also reduced the total volume of copper used in the circulation system.
Below is a comparison of the approximate copper content in different types of units:
- 🔹 Soviet refrigerators (up to 1990): up to 2.5–3 kg of copper (including a massive compressor and radiators).
- 🔹 Imported models (1990–2005): about 1.5–2 kg of copper.
- 🔹 Modern budget models: 0.7–1.2 kg of copper (mainly in the form of thin tubes).
It is worth considering that even if the refrigerator looks modern on the outside, time-tested components can be used inside. However, the trend towards cheaper production is inexorable, and today it is becoming increasingly difficult to find a new unit with an all-copper capacitor.
How to properly extract and prepare copper for delivery
If you decide to sell your refrigerator for scrap, proper preparation can increase your income. Reception points are often separated copper scrap (M1, M2) and mixed scrap (copper assembled with other metals). The purer the metal, the higher its price per kilogram.
To remove the tubes, you must dismantle the back panel of the refrigerator. Disconnect the compressor by cutting the tubes. Then remove the condenser grille. If it is glued to the body, it will have to be carefully beaten or sawed off. The tubes should be straightened and any remaining insulation removed if it interferes with the assessment.
It is better to hand over the compressor separately as “electric motor scrap” or “micromotor”, if there is such a category at the collection point. It makes sense to saw it yourself only if there is a large volume (dozens of pieces), since the effort on one unit is disproportionate to the profit.
☑️ Preparing scrap for delivery
Do not forget about safety precautions. The edges of the cut tubes are sharp, and sparks fly when working with an angle grinder. Wear safety glasses and gloves. It is also important to make sure that there is no pressure left in the tubes, although in old non-working refrigerators it is usually already released.
Economic feasibility and scrap market
The cost of copper on the scrap market fluctuates (fluctuates) and depends on world stock exchange quotations. At the time of writing, the price of pure copper (M1) is significantly higher than the cost of iron or aluminum. However, by handing over one refrigerator, you are unlikely to receive a large amount.
The main value is the copper component. A steel body (black scrap) costs a penny. Plastic and insulation are not accepted at all or go as trash. Therefore, when dismantling a refrigerator, you are actually selling 1-2 kilograms of copper and 5-10 kilograms of aluminum/steel.
If you are engaged in professional collection, it makes sense to accumulate copper from dozens of pieces of equipment. For an ordinary user, it may be more profitable to sell a working used refrigerator or its components (compressor, thermostat) for repair than to scrap it.
⚠️ Attention: Prices for non-ferrous scrap may vary depending on the season and economic situation. Before traveling to the collection point, check the current prices and requirements for metal sorting, since conditions may vary in different regions.
Frequently asked questions (FAQ)
How much does copper cost from one old refrigerator?
The cost depends on the current exchange rate and the weight of the extracted metal. On average, about 1-1.5 kg of pure copper comes out of one refrigerator. If the price of scrap is, for example, 600-700 rubles per kg, then the proceeds will be about 600-1000 rubles for the copper component, plus a small amount for aluminum and ferrous metal.
Is it possible to hand over the entire refrigerator without disassembling it?
Yes, most collection points accept entire refrigerators. However, in this case, they will evaluate it as “scrap of household appliances” or “meal”, the price for which is much lower than for sorted copper. Disassembly is beneficial only if you are willing to spend time and have the tools.
Is it harmful to burn insulation from copper wires?
Yes, it is extremely harmful and dangerous. When insulation (PVC, rubber) is burned, dioxins and other carcinogenic substances are released. In addition, burnt copper loses its properties and can be accepted at a lower price as “burnt copper.” It is better to hand over the wires in insulation or strip them mechanically.
Is there copper in the No Frost system?
In the No Frost system, copper is present in the form of tubes connecting the compressor to the evaporator, and in the evaporator itself (although it is often aluminum). Fans of the No Frost system contain a small amount of copper in the motor windings, but the bulk of the metal is concentrated in the refrigerant lines.