When the refrigerator stops cooling or starts making suspicious sounds, the first thought that comes to the owner is to find the “heart” of the unit. This is what a compressor is often called in everyday life, although it is technically more correct to use the term compressor-condensing unit. Understanding where this unit is located is necessary not only for diagnosing malfunctions, but also for proper care of equipment, as well as for safe movement of the device.
In most modern models, the compressor is located in the lower part of the housing, at the back. However, its location may vary dramatically depending on the year of manufacture, brand and type of refrigerator design. In old Soviet models or budget options, it is often in the public domain, while in modern expensive devices it can be hidden behind decorative panels.
The engine is the main driving force of the refrigeration cycle, compressing the refrigerant and forcing it to circulate through the system. If you are planning to carry out independent diagnostics or simply want to know the structure of your household appliance, it is important to understand that access to this unit does not always mean dismantling it. Inverter compressors, for example, often require more careful handling during inspection.
Classic arrangement: rear lower niche
The most common layout option, which is found in approximately 80% of all household refrigerators, is the installation of a compressor in the lower rear part of the case. If you walk up to the refrigerator and look behind it, you will see a black, round or oval metal piece that resembles a barrel. This is a hermetic compressor.
Usually it is mounted on a frame or special shock absorbers to dampen vibrations during operation. Next to it is a start-up relay and a capacitor. It is important to note that in this area there are also condenser tubes (radiator grille), which can be hot during operation. The surface temperature of a working compressor can reach 90 degrees Celsiustherefore, touching it immediately after stopping the equipment is dangerous.
Access to the engine in such models is usually limited only the space behind the refrigerator. There is no need to remove any additional covers, unless the design requires a decorative casing covering the entire lower part. In this case, the casing is attached to latches or screws that can be easily unscrewed with a Phillips screwdriver.
⚠️ Attention: Before touching any electrical components, be sure to unplug the refrigerator. Even if the engine has stopped, a residual charge may remain in the capacitors.
Hidden compressor: models with a closed base
Modern manufacturers, such as Bosch, Siemens, LG and others, often hide technical components behind a decorative panel at the bottom of the refrigerator, called the base. This is done to improve aesthetics and protect against dust. In such cases, when looking from behind, you will see a flat wall or ventilation grille, but not the engine itself.
To get to the engine, you need to remove this panel. It can be attached with magnets, snaps or screws. Often at the bottom, near the floor, there are ventilation holes through which the insides can be seen, but dismantling is required for a full inspection. Inside you will find the same black “barrel”, but in a closer environment of other elements.
In models with No Frost other important components may be located in the same area, for example, defrosting heating elements or sensors, although most of them are located inside the freezer compartment. The hidden location requires care when removing the panels so as not to break the plastic clips, which become brittle over time.
Rare cases: top location and built-in models
There are exceptions to the “engine at the bottom” rule. In some older models or specific industrial refrigerators, the compressor may be located at the top of the unit. This is typical for equipment produced several decades ago, where other layout standards were used.
Built-in refrigerators deserve special attention. In them, the engine is also located at the bottom, but access to it is often difficult due to the presence of a kitchen furniture base. To check the condition of the motor in built-in appliances, sometimes you have to remove the lower decorative strip of the kitchen unit or remove the refrigerator itself from the niche.
In two-compressor models that have separate circuits for the refrigerator and freezer compartments, you can find two motors. They are usually located next to each other in one niche, less often - one below, and the second in another place, although the latter is extremely rare in household appliances.
Why do two-compressor models have two engines?
The presence of two compressors allows you to independently regulate the temperature in each compartment and save energy, since when opening one door the entire volume is not cooled. In addition, this reduces the load on each individual unit, extending its service life.
Visual identification: how not to confuse parts
It is easy for a beginner to confuse the compressor with other elements of the refrigeration unit. To accurately identify an engine, you need to know its distinctive features. This is a massive part that is heavier than the other components in the lower part.
Copper tubes are always suitable for the compressor. There are usually two or three of them: one suction (thick), one discharge (thin) and sometimes a third for the capillary tube. It also necessarily comes with an electrical cable, enclosed in a corrugated or plastic box, leading to the start relay.
Below is a table that helps to distinguish the main elements of the lower part of the refrigerator:
| Element | Appearance | Location | Function |
|---|---|---|---|
| Compressor | Black metal barrel | Lower rear | Compression refrigerant |
| Condenser | Metal grille with fins | Back or on the sides | Gas cooling |
| Evaporator | Tubes (often hidden) | Inside the chambers | Heat absorption |
| Start relay | Plastic box on the compressor | Side on compressor | Starting the engine |
If you see a vibrating element that makes a hum, this is almost certain compressor. If you see a grate that is just hot but doesn't move, it's a capacitor. Understanding the difference will help you more accurately describe the problem to the technician over the phone.
Types of compressors: conventional and inverter
When looking for a motor, it is important to understand what type is installed in your refrigerator. Traditional compressors operate on an on-off principle. They make a characteristic start-up sound, operate at full power and then switch off. They are easily recognized by sound and vibration.
Inverter compressors, which are increasingly found in models Samsung, LG, Bosch, work differently. They do not turn off completely, but only change the speed of rotation of the shaft. Visually, they may look more compact and sometimes have a plastic casing on top. They are more difficult to find, since they operate quieter and do not have sharp starting shocks.
The difference also lies in the fastening. Inverter models are often suspended with special shock absorbers to minimize vibration transfer to the frame, while older models may simply be bolted to the frame. When trying to check functionality, this must be taken into account.
Diagnostics and precautions
If you get to the engine and want to check its condition, pay attention to external signs. There should be no traces of oil, rust or swelling on the compressor. The presence of oily stains may indicate depressurization of the system, which requires professional intervention.
Check the integrity of the electrical wires. They should not be melted or damaged by rodents, which sometimes happens in private homes. If you hear clicking noises but the engine does not start, the problem may be with the start relay and not with the motor itself.
⚠️ Attention: It is strictly forbidden to pierce the compressor housing or cut the tubes unless you have skills in working with refrigeration equipment and do not have a license to work with freon. This can lead to an explosion or poisoning.
☑️ Initial inspection of the compressor
Even if you found the engine, this does not always mean that you can repair it yourself. Replacing the compressor requires evacuation of the system and charging of refrigerant, which cannot be done without special equipment.
Frequently asked questions (FAQ)
Can you touch a running compressor with your hand?
Briefly touching the housing of a running compressor is usually safe, but is not recommended. The surface may be very hot (up to 80-90°C), which will cause burns. In addition, there is a risk of getting an electric shock if the wiring insulation is broken.
Why is the compressor hot, but the refrigerator does not freeze?
This may indicate several problems: a freon leak, a clogged capillary tube, or a malfunction of the compressor itself (for example, loss of performance of the piston group). In any case, diagnostics by a specialist is required.
Where is the compressor located in the Atlant refrigerator?
In most models of Atlant refrigerators, the compressor is located in the classic place: in the lower rear part, in a niche, closed with a metal or plastic cover, which is easy to remove.
How much does the compressor weigh from refrigerator?
The weight of a household compressor varies depending on power and volume. Usually it ranges from 10 to 25 kilograms. More powerful dual-compressor systems or units for larger Side-by-Side refrigerators may weigh more.