Modern household appliances are a complex conglomerate of materials, where, along with plastic and steel, valuable non-ferrous metals are hidden. The question of how to get copper out of the refrigerator often arises among those who recycle old equipment or want to hand over equipment to scrap metal collection points for profit. However, this process is not as simple as it seems at first glance, and requires an understanding of the structure of the unit, as well as strict adherence to safety measures.
The main value for the deliverer lies not only in the body, but also in internal components, such as capacitors, evaporators and, of course, electric motor windings. It is these units that contain the largest amount of pure metal, which is in high demand in the secondary market. It is important to understand that simply breaking a refrigerator with a sledgehammer is an ineffective and dangerous way that can lead to injury or environmental pollution with freon.
In this article we will analyze in detail the stages of dismantling, the necessary tools and the economic feasibility of this operation. You will learn exactly where to look for non-ferrous metal and how to separate it from steel elements. We will also touch on the legal and environmental aspects of recycling household appliances so that your trip to the collection point is successful and without problems with the law.
Where is copper in the refrigerator: anatomy of the device
Before taking up the tools, you need to clearly understand where exactly in the design of the refrigerator the required resource is hidden. Unlike washing machines, where copper is mainly found in the motor, in a refrigeration unit the distribution of the metal is more complex. The main sources are compressor (motor-compressor) and the refrigerant circulation system.
The compressor is the heart of the refrigerator, and inside it there is an electric motor with copper windings. It is this detail that most often attracts the attention of those who are looking for a way to remove copper. However, it is worth noting that in modern models the amount of copper in the windings may vary depending on the manufacturer and year of manufacture. Also, a significant amount of metal is contained in the tubes of heat exchangers, which are often made of aluminum or copper alloys.
The second important unit is capacitor array, usually located on the rear wall of the unit. In old Soviet-made models, it could be made of pure copper, but in modern refrigerators it is more often replaced with copper-plated steel or all-aluminum alloys. Therefore, before starting disassembly, it makes sense to carry out initial diagnostics using a magnet in order to assess potential production.
- 🔧 Motor-compressor: contains coils with windings made of high-quality electrical copper.
- ❄️ Pipelines: connect the compressor to the evaporator and condenser, often made of copper alloys.
- 🌡️ Thermoregulator: inside may contain small elements made of non-ferrous metals, although their volume is insignificant.
- 🔌 Electrical wiring: Wiring harnesses going to the control panel and lighting also need to be cut.
⚠️ Attention: Not all tubes in the refrigerator are copper! Modern manufacturers actively use aluminum and steel. Checking with a magnet is mandatory: if the tube is magnetic, it is steel; if not, and it is light, it is most likely aluminum. Pure copper is not magnetic and has a characteristic reddish tint when cut.
Necessary tools and workplace preparation
For high-quality cutting of the refrigerator and extraction of non-ferrous metals, you will need a set of specialized tools. Using the wrong equipment can not only slow down the process, but also make it hazardous. The main tool for working with metal is angle grinder (grinder) with metal discs, which will allow you to quickly cut a steel body and thick tubes.
You will also need hand tools: a set of wrenches, screwdrivers (phillips and flat-nose), pliers and side cutters. Removing the compressor often requires a ratchet wrench or socket of a certain size, as the mounting bolts may be over-tightened or rusted over time. It would be a good idea to have a hammer and chisel on hand to knock out jammed elements.
Particular attention should be paid to personal protective equipment. Working with metal and power tools requires safety glassesthick gloves and a respirator. Cutting metal produces fine dust and sparks that can damage your eyes or respiratory tract. It is best to work in a well-ventilated area, for example, in a garage or outside, covering the floor with thick film or cardboard to collect small debris.
☑️ Preparation for disassembly
Before starting work, the refrigerator must be completely defrosted and disconnected from the power supply at least 24 hours. This is necessary so that there is no ice left inside, which can make work difficult, and also so that condensation has time to drain out. Water and power tools are a dangerous combination, so keeping the unit dry is critical.
Removing the compressor: the main source of copper
The most time-consuming, but also the most profitable stage is removing and disassembling the compressor. This is where the bulk of the copper is concentrated in the form of motor windings. To get to them, you must first remove the unit itself from the refrigerator frame. The compressor is usually mounted on four legs with rubber shock absorbers and welded studs or bolts.
First of all, you need to use wire cutters or saw through the copper tubes going from the compressor to the cooling system. This must be done carefully, as residual pressure and oil may remain in the system. After disconnecting the tubes, the mounting bolts are unscrewed or the studs holding the motor to the frame are cut off. Now you have the compressor in your hands, but the copper is still inside.
To remove the winding, the compressor housing will have to be opened. This is done using a grinder: you need to make a circular cut along the equator of the body, dividing it into two halves. Inside you will see a stator with copper wire wound around it. Copper winding in modern engines it has high purity and is valued higher than mixed metal scrap. To pull it out, you often have to cut out the end parts of the stator with a chisel or heat the housing to loosen the varnish with which the winding is filled.
| Compressor type | Approximate weight of copper (g) | Complexity extraction | Features |
|---|---|---|---|
| Soviet (Biryusa, Dnieper) | 1000 - 1500 | High (heating required) | Thick wire, a lot of copper |
| Imported (Danfoss, Electrolux) | 500 - 900 | Medium | Compact size, thin wire |
| Inverter (modern) | 300 - 600 | Low (little copper) | Often contains rare earth magnets |
What to do with oil from the compressor?
Inside the compressor there is technical oil that cannot be drained into the sewer or onto the ground. It must be collected in a separate sealed container and taken to a waste oil or hazardous waste collection point. The oil volume usually ranges from 200 to 400 ml depending on the model of the unit.">
Disassembling heat exchangers and tubes
After working with the compressor, attention turns to the tube system. As already mentioned, in old refrigerators the condenser (black grille at the back) could be copper. To check this, just make a notch with a small file or knife in an inconspicuous place. If the metal is yellow-red and soft, you're in luck. If it's silver or gray, it's aluminum or steel.
To remove the tubes from the refrigerator body, you often have to remove the internal plastic lining or even foam the insulation if the tubes are embedded in the walls (as is often the case with the evaporator in the freezer. It's dirty and dusty). work. Evaporator modern models are often made of aluminum, but in Soviet-era technology there was also a copper version.
Connecting elements and capillary tubes deserve special attention. They are thin and can get lost in the overall volume of scrap. Collect all colored tubes in a separate bag, clearing them of insulation and steel fasteners. The cleaner the scrap, the higher the price that you will be offered at the collection point.
- 🔍 Visual inspection: look for the characteristic reddish shine on cuts and bends.
- 🧲 Magnet test: copper and aluminum are not magnetic, steel is magnetic.
- ⚖️ Sorting: keep copper, brass, aluminum and steel in different containers.
⚠️ Attention: When dismantling the tubes built into the body (foamed), a huge amount of small particles is formed glass and plastic dust from insulation. Be sure to use a respirator with a protection class of at least FFP2 and safety glasses. Getting this dust into your eyes or lungs can cause serious irritation.
Electrical parts and additional components
You should not ignore the electrical part of the refrigerator. The wires running from the plug to the compressor, light bulb and thermostat contain copper strands. Although the weight of copper in one refrigerator is small here (usually 100-200 grams), with mass recycling this becomes a tangible bonus. To remove the cores, you can burn the wires (which is environmentally harmful and prohibited in many places) or use a special cable stripping machine.
Other non-ferrous metals may also be found in refrigerators. For example, in some models, radiators or heat sink plates can be made of aluminum or brass. Brass valves and fittings also have value, although less than pure copper. All these elements should be assembled separately.
It is important to remember about electronic control boards, if your model has them (in modern refrigerators with displays and complex logic). The boards contain gold, silver and copper, but they cannot be recycled at home. It is better to hand them over separately as an electronic board or “computer scrap.”
Ecology, safety and legal aspects
When disassembling a refrigerator, you are faced not only with metal, but also with refrigerant (freon). Old models used freons, which destroy the ozone layer, while new ones use freons that are safer, but still require caution. Freon release emitted into the atmosphere by simply cutting the tubes is a violation of environmental standards. Although this is rarely monitored on a domestic scale, professional recycling involves pumping out the gas before cutting.
In addition, the refrigerant circulation system may contain oil, which is a petroleum product. Its discharge into the soil or sewer is strictly prohibited. Collect all technical liquids in sealed containers for subsequent transfer to specialized organizations.
From a legal point of view, the delivery of non-ferrous metal scrap in Russia and many CIS countries requires a passport. Reception points are required to record the data of the donor in order to combat the theft of infrastructure (cables, hatches). If you are handing over a large amount of metal, you may be asked for documents confirming the origin of the scrap, although this is rarely required for one or two refrigerators.
| Component | Type of metal | Danger | Where to hand over |
|---|---|---|---|
| Motor winding | Copper (M1, M2) | No | Non-ferrous metal scrap |
| Compressor housing | Steel | Sharp oil | Black scrap |
| Tubes (old) | Copper/Brass | Residues freon | Non-ferrous metal scrap |
| Tubes (new) | Aluminium/Steel | No | Aluminium/Black scrap |
Economic feasibility: is the game worth the candle?
Let's do the math. Let's say you have an old Soviet refrigerator. From the compressor you can get about 1-1.2 kg of copper. From the tubes - another 0.5-1 kg, if you're lucky. Total, maximum 2-2.5 kg of non-ferrous metal. At current scrap prices, this could amount to the equivalent of a few loaves of bread or a taxi ride. If the refrigerator is modern, the copper yield will be even less - often no more than 500-700 grams.
If we consider the process as a business, then it is more profitable to collect equipment in bulk. Disassembling one refrigerator takes from 40 minutes to 2 hours (depending on the degree of automation and the presence of built-in tubes). Labor costs, consumption of grinder discs and electricity often cover the profit from handing over a couple of kilograms of metal.
However, if the refrigerator has already ended up in your landfill or you are engaged in professional dismantling of household appliances, then copper extraction becomes a mandatory step in maximizing profits. The steel body of a refrigerator costs a penny, and it is non-ferrous metals that make recycling profitable.
⚠️ Attention: Prices for scrap non-ferrous metals are volatile (subject to fluctuations) and depend on the exchange price of copper. Before traveling to the collection point, check the current prices, as they may change weekly. Also keep in mind that for “dirty” scrap (with oil, solder, steel) the price can be reduced by 10-20%.
Frequently asked questions (FAQ)
Approximately how much copper can be obtained from one refrigerator?
On average, from an old Soviet refrigerator you can extract from 1.5 to 2.5 kg copper (including winding and tubes). Of modern models, the yield is much smaller - usually from 300 to 800 grams, since manufacturers save materials and use aluminum.
Is it possible to hand over the entire refrigerator without disassembling it?
Yes, many collection points accept entire refrigerators as scrap or household appliances. However, the price in this case will be significantly lower, since you will not receive payment for non-ferrous metal separately, and the cost of steel is low. Disassembly increases profits by 2-3 times.
Is it dangerous to open a compressor?
Opening a compressor with an angle grinder is safe if there is no pressure in it. Before cutting, make sure that all the tubes are cut and the gas has escaped. There may be oil inside, so wear gloves. The main danger is the flying off of metal filings and sparks, so glasses are required.
What to do with freon during disassembly?
It is impossible to safely dispose of freon at home. When the tubes are cut, it will simply evaporate into the atmosphere. Professional recyclers use vacuum pumps to remove the refrigerant before disassembly. At home, all that remains is to ventilate the room as quickly as possible when working.
Will they accept copper if it has turned black after heating?
They will accept it, but they can be classified as “burnt copper” or “copper with contamination,” the price of which is lower than that of pure (shiny) copper. Oxidized metal (cuprite) loses weight and quality, so receivers often make allowances for waste.