When choosing a new refrigerator, especially domestic brand Atlant, customers are often faced with a difficult technical question: how many compressors should be in the unit? This is not just a marketing ploy, but a fundamental difference in design, which directly affects the durability, noise level and, of course, the cost of ownership of the equipment. Many users mistakenly believe that two motors are always better than one, but in the realities of modern operation this statement requires serious detail.
In this article we will analyze the design features of single-compressor and double-compressor systems used in refrigerators Atlant. You will learn exactly how the separation of cooling circuits works, why it is important for food safety, and whether it is worth overpaying for the additional complexity of the mechanism. Understanding these nuances will help you avoid unnecessary expenses and choose equipment that is ideal for your lifestyle and eating habits.
It is worth noting that the Belarusian manufacturer Atlant over many years of production has established itself as a reliable supplier of equipment, but their approach to choosing a motor has changed depending on the model row. Compressor is the heart of any refrigeration cabinet, and its operation determines how often you will have to call a repairman. Let's figure out which option will be the optimal solution for your kitchen.
Fundamental differences in the operation of cooling systems
The fundamental difference lies in the number of working refrigerant circuits. Models with one compressor use a single motor that pumps freon into a common pipe system. A special solenoid valve switches the refrigerant flow between the freezer and refrigerator compartments. This means that at one time only one of the chambers is cooled, and the second simply maintains the temperature. This approach is called single-compressor system.
In turn, refrigerators with two compressors are equipped with two independent motors and two separate circuits. One motor is solely responsible for the freezer compartment, and the second is responsible for the refrigerator compartment. They work autonomously without interfering with each other. If you open the refrigerator door, the freezer compressor will not even “know” about it and will not start again. This provides a more stable temperature regime.
The difference also lies in temperature control. In two-compressor models Atlant you can independently adjust the freezing and cooling power. You can turn on the “super freeze” mode in the freezer without fear that the food in the main chamber will freeze or, conversely, spoil due to lack of cold. In single-circuit systems, such independence is limited by the capabilities of the valve and the logic of the electronic control unit.
⚠️ Attention: If the solenoid valve in a single-compressor refrigerator breaks down, problems may arise with cooling one of the chambers, while in the second the temperature will be maintained normally. Diagnosis of such a malfunction requires a professional approach.
Efficiency and energy consumption
The issue of energy consumption often becomes the decisive argument when purchasing. It is logical to assume that two motors consume more electricity than one. However, in reality everything is not so simple. Two-compressor models Atlant often turn out to be more economical due to the fact that each motor is turned on less often and runs for less time. They do not waste energy pumping refrigerant through a long system with valves, but work strictly according to the needs of their chamber.
Single-compressor units are forced to work more intensely. Since there is only one circuit, the motor has to start frequently to compensate for the loss of cold when opening any of the doors. In addition, the presence of additional resistance in the form of a switching valve requires more power from the engine to pump freon. Modern inverter compressors, which are sometimes found in top models, smooth out this difference, but classic dual-motor designs remain leaders in efficiency.
When considering electricity bills, it is worth considering the energy efficiency class. Models Atlant with two motors are often marked A or A+, which indicates their ability to keep cold at minimal cost. If you plan to use the refrigerator for decades, the initial overpayment for a second compressor can be recouped through lower electricity bills.
Comparison of reliability and service life
Reliability is the Achilles heel of any equipment. It would seem that the simpler the system (one motor), the more reliable it is. But in the case of refrigerators Atlant the opposite principle applies. One compressor experiences enormous loads, working on two circuits. It starts more often, stops more often and runs at higher pressure. The service life of such an engine is, as a rule, lower than that of a pair of engines operating in a gentle mode.
Two compressors distribute the load equally. Each of them works approximately half the time than a single counterpart under similar conditions. Fewer on-off cycles means less wear on the piston group and start relay. Statistics from service centers show that two-compressor models Atlant less often require replacement of the motor-compressor during the first 7-10 years of operation.
However, there is a flip side to the coin: the probability of failure is doubled simply mathematically. You don't have one potentially faulty node, but two. If one motor breaks down, the other will continue to work, and you may not immediately notice the problem. But if the electronic control module, which coordinates the operation of both motors, breaks down, the entire refrigerator will fail.
Hidden statistics of breakdowns
According to service centers, 60% of breakdowns of single-compressor refrigerators are associated with overheating of the motor or failure of the switching valve, while in two-compressor models problems with individual thermostats are more common cameras.
It is also important to consider the build quality. Dual compressor models have more connections, tubing and electrical contacts. Each connection is a potential freon leak point. Therefore, when choosing, pay attention to the quality of soldering and the absence of traces of oil on the tubes in the rear part of the unit.
Noise level and operating comfort
For many apartment residents, the noise level is a critical parameter. Here, two-compressor refrigerators Atlant win by a large margin. Since the motors work in turn and each of them is less powerful (since it is designed for one camera), they make significantly less sound. In addition, they turn on less often, which creates a feeling of silence in the room.
Single-compressor models, especially old-style ones or budget lines, can hum quite noticeably. A powerful motor operating at its maximum capacity creates vibration that is transmitted to the body and resonates with the shelves. If your kitchen is combined with a living room or bedroom, this hum can become a serious irritant at night.
It is worth noting that modern noise insulation technologies make it possible to minimize this effect. But if you are sensitive to sounds, choosing two motors will be a safer solution for your comfort. Silence in the house is not just the absence of sound, it is the quality of life.
Functionality and safety of products
The main argument in favor of two compressors is the possibility of a complete No Frost or combined cooling system in both chambers with independent control. In such refrigerators Atlant products in the main chamber are not aired, since cold air flows do not mix with air from the freezer. This is especially important for storing vegetables, fruits and ready-made dishes.
In single-circuit systems, the problem of food drying out in the refrigerator compartment or, conversely, freezing at the rear wall is often encountered. This occurs due to the fact that air circulates throughout the entire volume, and moisture from the refrigerator compartment can be “pulled” by a powerful flow from the freezer. The dual-circuit system isolates odors: the aroma of defrosted fish from the freezer will never get into the cake lying on the refrigerator shelf.
Freezing speed is also important. Two compressors allow you to freeze large volumes of food faster and more efficiently. This preserves the structure of the fibers of meat and berries, preventing the formation of large ice crystals that destroy the cells of the product during defrosting.
| Comparison parameter | 1 Compressor | 2 Compressors |
|---|---|---|
| Electricity consumption | Medium / High | Low / Optimal |
| Noise level | Higher (one powerful motor) | Lower (two quiet motors) |
| Independence of cameras | No (work in turns) | Yes (complete autonomy) |
| Risk of mixing odors | Possible | Excluded |
| Repair cost | Cheaper (one spare part) | More expensive (more difficult diagnostics) |
Pricing policy and payback of choice
The initial cost of refrigerators Atlant with two compressors is always higher. The difference can be from 15% to 30% depending on the model range and the availability of additional functions. For buyers on a limited budget, this often becomes a stopping factor. However, if we consider the purchase as an investment for 10-15 years, the picture changes.
Taking into account lower energy consumption and a longer service life of parts, a two-compressor model can reach a payback level after 5-7 years of operation. After this period, you actually get free use of more comfortable and quieter equipment. In addition, such refrigerators are more liquid on the secondary market - they are more willing to buy used precisely because of their reliability.
☑️ What to look for when buying
Budget single-compressor models Atlant also have right to life. They are great for a cottage, garage or rented apartment where long-term storage of large volumes of food is not planned. If you need a simple “cold box” without any pretensions to culinary delights, there is no point in overpaying for a second motor.
Frequently asked questions and answers (FAQ)
Is it possible to turn off one of the chambers in a single-compressor Atlant refrigerator?
In most models with one compressor, it is impossible to completely turn off one of the chambers (for example, a refrigerator, leaving the freezer), since the circuit is common. Some advanced models allow you to switch the refrigerator to “vacation” mode, when the main chamber operates in economy mode, but the freezer continues to freeze. Complete shutdown is only possible by mechanically closing the damper, if it is provided for in the design, but this is not recommended by the manufacturer.
Is it true that a two-compressor refrigerator is more difficult to repair?
Yes, diagnosing a dual-circuit system requires a more qualified approach. The technician needs to check two motors, two starting relays and two circulation circuits. However, the components themselves (compressors) in refrigerators Atlant are standardized, and finding spare parts for them is not difficult. The difficulty is rather in the amount of work, rather than in the shortage of parts.
Which compressor is quieter: Atlant or foreign analogues?
Own compressors Atlant are considered quite noisy compared to premium European brands (for example, Secop or Danfoss), but they win in maintainability and price. If silence is critical for you, it is better to look at two-compressor models, where the load is distributed, which reduces the overall background noise, regardless of the brand of the motor itself.
Does the number of compressors affect the defrosting speed?
Indirectly. In No Frost systems with two compressors, the evaporators defrost independently and more frequently, which prevents ice buildup. In single-compressor drip systems, defrosting occurs during a pause in motor operation. If the motor is powerful and runs for a long time, pauses may be less frequent, which theoretically can contribute to a more intensive growth of the “fur coat” if the seal is faulty.
Is it worth replacing the old single-compressor Atlant with a two-compressor one?
If your current refrigerator is more than 10 years old, and it begins to break down frequently or consume a lot of electricity, replacement makes sense. You will get not only savings on bills, but also comfort in the form of silence and no need for manual defrosting (in No Frost models). If the old unit works properly, and the noise does not bother you, the replacement may never pay off.