The choice of household appliances for the kitchen often turns into a complex equation where you need to take into account dimensions, energy efficiency and functionality. One of the key technical parameters that experienced buyers pay attention to is the number of compressors. It is this unit that is responsible for circulating the refrigerant and maintaining the set temperature in the chambers. In the model range of the Belarusian brand Atlant you can find various configurations, which often causes confusion among consumers.
The question of how many compressors installed in a particular two-chamber refrigerator directly affects the noise level, power consumption and the ability to independently control the freezer and refrigeration chambers. Some users are looking for equipment with a single motor to save money, while others insist on a dual-compressor system for maximum comfort. Understanding these differences will help you not to overpay for unnecessary functions or, conversely, not to encounter the limitations of the chosen model.
In this article we will analyze in detail the design features of the equipment Atlant, analyze the advantages and disadvantages of different cooling schemes and help you determine which option is suitable for your kitchen. We will also touch on the topic of reliability and maintainability of various systems.
Design features of Atlant refrigerators
Belorussian plant Atlant has been producing refrigeration equipment for many years, using time-tested technologies. The operation of any unit is based on the refrigeration circuit, the heart of which is the compressor. In two-chamber models, the manufacturer uses two main cooling schemes: single-circuit with one compressor and double-circuit with two independent compressors. The choice of a specific scheme depends on the series, year of manufacture and price segment of the model.
Models with one compressor use a single piping system where the refrigerant sequentially passes through the evaporator of the freezer compartment and then the refrigerator compartment. Temperature control in this case is often carried out by solenoid valves, which redirect the flow of freon. This is a simpler and cheaper design to manufacture, which dominates in the budget and mid-range segment.
In turn, equipment with two motors is equipped with two completely independent refrigeration circuits. This means that one unit is responsible for cooling the freezer, and another is responsible for the plus chamber. This system allows you to achieve more accurate temperature readings and restore the cold faster after opening the door. However, for this efficiency you have to pay a higher price and increased weight of the device.
⚠️ Attention: When purchasing used equipment or a model from a display case, be sure to check the technical data sheet. Externally, it is almost impossible to distinguish a single-compressor model from a two-compressor model, since the motors are often hidden in a niche on the rear wall.
It is also worth noting that modern inverter models may have a unique architecture that differs from classical circuits. Therefore, when choosing, it is important to pay attention not only to the number of motors, but also to the type of refrigerant compression technology used.
Single-compressor models: operating principle and characteristics
Most refrigerators Atlantpresented in the mass market belong to the single-compressor category. In such devices, one powerful motor-compressor serves two evaporators at once. The refrigerant circulation is regulated by a system of valves that open and close at the command of a thermostat or electronic control module. When the temperature in one of the chambers reaches the set value, the valve shuts off the freon supply to the corresponding evaporator.
The main advantage of this scheme is efficiency. One engine consumes less electricity at start-up and during operation than two units running simultaneously. Additionally, the simplified design means fewer potential points of failure, which theoretically improves overall system reliability. Repairing such a refrigerator is usually cheaper due to the presence of only one main compression unit.
However, single-compressor models also have their limitations. Since the circuit is shared, it is impossible to completely turn off one of the cameras independently. For example, you cannot turn off the freezer while leaving the refrigerator compartment running, or vice versa, without special technical tricks. Also, temperature conditions may be less stable during sudden load surges.
Is it possible to defrost one chamber in a single-compressor refrigerator?
In single-compressor models with the No Frost system, complete independent defrosting of the chambers is impossible without turning off the entire appliance. In models with a drip system (“crying wall”), defrosting of the refrigerator compartment occurs automatically, but to defrost the freezer you will have to turn off the entire refrigerator.
It is important to understand that modern single-compressor systems have been significantly improved compared to models of the 90s. The use of new types of refrigerants and improved thermal insulation allow them to effectively cope with the tasks of storing food in an ordinary family.
Two-compressor system: independence and efficiency
Two-chamber refrigerators Atlant with two compressors are, in fact, two independent refrigerators in one housing. Each circuit has its own motor, condenser, capillary tube and evaporator. This engineering solution allows you to achieve maximum autonomy of the cameras. You can set the temperature -18°C in the freezer and +4°C in the refrigerator compartment, and the systems will work independently of each other without affecting the performance of the neighbor.
The key advantage of this configuration is the speed of freezing and restoration of the temperature regime. If you put a large amount of warm food in the freezer, the second compressor will turn on in this circuit without affecting the operation of the plus chamber. This is especially true for large families or those who like to stock up on food for future use. In addition, such a system often works quieter, since the motors turn on one by one and do not create resonance.
- 🔹 Complete independence of temperature conditions in each chamber.
- 🔹 Possibility of turning off one of the chambers (Vacation mode or completely turning off the freezer).
- 🔹 More fast freezing of food and restoration of cold.
- 🔹 Less load on each individual engine, which extends the resource.
Despite the obvious advantages, two-compressor models also have disadvantages. The main one is the higher cost, which consists of the price of the second motor and doubling the elements of the refrigeration circuit. Also, such refrigerators are heavier and require more space for installation, since the heat removal system (condensers) can be larger.
Comparison of models: characteristics table
To make it easier for you to navigate the technical nuances, we have prepared a comparison table. It demonstrates the main differences between the brand’s one- and two-compressor models Atlant. This data will help you weigh the pros and cons before purchasing.
| Characteristics | One compressor | Two compressors |
|---|---|---|
| Independence of chambers | Partial (depending on valves) | Full (100% autonomy) |
| Noise level | Medium (one sound source) | Low (motors work in turn) |
| Energy consumption | Lower (one lower power motor) | Higher (total power of two motors) |
| Freezing speed | Standard | High (accelerated) |
| Repair cost | Lower | Higher (two potential failure units) |
The table shows that the choice depends on priorities. If silence and the ability to store different types of products at radically different temperatures are important to you, a dual-compressor model will be better. If the budget is limited and the storage requirements are standard, one motor is quite enough.
It is also worth considering the dimensions. Dual-compressor models often (but not always) have greater depth or width, as they require additional equipment to be accommodated. In a small-sized kitchen, this can be a decisive factor.
How to find out the number of compressors in the refrigerator
If you already own the equipment Atlant or are in a store, you can determine the number of motors in several ways. The simplest and most reliable method is to study technical documentation. The compressor model is always indicated in the product passport or on a sticker with technical characteristics (usually located inside the refrigerator compartment or on the back wall). If there is only one model, it means there is only one motor. If two different models are listed or one model marked "x2" (which is rare, usually two different ones are written), then there are two of them.
Visual inspection of the back wall can also give the answer. In dual-compressor models, you can often (but not always) see two distinct black “barrels” - these are the compressors. They can be located next to each other or one above the other. However, in modern designer models, the back panel may be closed with a decorative casing that hides the insides.
Another sign is the presence of separate temperature controllers for each chamber. If you have a mechanical control and two separate thermostat knobs coming out of the housing, this is most likely a two-compressor model (or a very rare single-compressor model with a complex damper system, but in Atlantakh this is more often a sign of two motors). In electronic models with a display, this feature does not work, since the control is digital.
You can also listen to the operation of the device. If, after opening the freezer door, you hear the motor starting, but the refrigerator compartment is silent at this moment (and vice versa), this may indicate independent circuits. In single-compressor models, during operation, the entire system often hums at once, although the valves can switch with a characteristic click.
Energy consumption and noise level
The issue of energy efficiency is acute, especially given the rise in electricity tariffs. There is an opinion that two compressors consume twice as much energy. This is not entirely true. Yes, the total power of the two engines is higher, but they do not work all the time. Each of them turns on only when the temperature in its chamber rises. In a single-compressor refrigerator, the motor can run longer to maintain cold in both compartments, especially if the freezer door is opened. Modern models of both types belong to the energy consumption class
Modern models Atlant both types belong to the energy class A or A+. The difference in electricity bills between a one- and two-compressor model of the same volume will be minimal and amount to an insignificant amount on an annualized basis. Therefore, you should not make a choice solely to save electricity.
As for noise, here two-compressor models often win. Because the motors are switched on alternately, the peak noise level is lower. In addition, each individual compressor may be less powerful and therefore less vibrating than a single powerful motor in a single-circuit system. However, a lot depends on the quality of the installation: if the refrigerator is not level, any model will hum.
⚠️ Attention: The noise level also depends on the type of refrigerant and the design of the compressor. Inverter motors (found in top models) operate much quieter and smoother, regardless of their number.
If you plan to install a refrigerator in a kitchen-living room or studio apartment, where the space is single, the level of acoustic comfort comes to the fore. In this case, it is worth considering models with a declared noise level of up to 39 dB, which are more common among two-compressor options.
Maintainability and service life
The reliability of Belarusian refrigerators Atlant has long become a legend, largely due to the simplicity of the design. Single-compressor models are considered “workhorses” with minimal risk of breakdown. There is nothing special to break there: the compressor, the start relay, the thermostat and the evaporator. Replacing a compressor in such a model is a standard procedure for any master.
In two-compressor systems, the probability of failure of one of the units is statistically higher, simply because there are more of them. However, the compressors themselves Atlant (often produced by the same plant or trusted partners like Secop) last for 10-15 years or more. A problem may arise with finding a specific spare part for a rare model, but in general the brand’s service network is well developed.
☑️ Signs of a compressor malfunction
An important aspect is the cost of repairs. Replacing one compressor in a dual-circuit system will cost less than replacing a single motor in a single-circuit system, if we consider the percentage of the cost of the new device. But if the second motor fails, the costs will double.
The service life also depends on operating conditions. Frequent power surges in the network can damage the electronics or motor windings in any model. Using a voltage stabilizer is a reasonable precaution for expensive equipment.
What to choose: practical recommendations
So, how to make the right choice? If your budget is limited and your kitchen is small, feel free to take a modern single-compressor Atlant. It will do a great job storing food for a family of 2-4 people. Modern technologies allow them to be quite quiet and economical.
If you like to make large stocks of meat and semi-finished products, often go away and want to turn off the refrigerator compartment, leaving the freezer to work, or just want maximum comfort and a willingness to pay more for it, your choice is a two-compressor model. This is also an ideal option for large families, where the refrigerator door is opened dozens of times a day.
Do not forget to check the presence of the function Super Freeze (super freezing), which is especially effective in two-compressor models, allowing you to quickly freeze products without defrosting existing stocks.
Ultimately, both options have the right to life. The brand Atlant holds its mark in both segments, offering value for money that is difficult to find among foreign competitors. The main thing is to clearly understand your needs and not overpay for functions that you will not use.
Is it possible to replace one compressor in a two-compressor refrigerator with another type?
Theoretically, it is possible, but this requires deep knowledge in refrigeration technology. It is necessary to select a motor of similar power, refrigerant and oil type. Improper replacement will lead to rapid failure of the new compressor or ineffective system operation. It is better to use original spare parts or complete analogues recommended by the manufacturer.
Why is a two-compressor refrigerator more expensive?
The price is due to doubling the number of main components: two compressors, two condensers, two sets of tubes and a more complex control system. Also, such models often belong to higher energy efficiency classes and are equipped with additional functions, which also affects the cost.
Does a two-compressor Atlant sound louder than one?
No, usually the opposite. Because the motors operate independently and not simultaneously, the overall background noise is perceived as less intrusive. In addition, the load on each motor is less, which reduces vibration. However, if both motors turn on at the same time (which is rare), short-term noise may increase.
Does it make sense to buy a two-compressor refrigerator for a summer house?
For a summer house where the equipment is used seasonally or periodically, there is often no point in overpaying for a second compressor. Single-compressor models can more easily withstand long-term downtime and power surges (if protected), and their repairs in case of emergency will cost less. A two-compressor option makes sense if you live in a country house all year round and keep large supplies.