When choosing a modern of household appliances in the kitchen, one of the key parameters that buyers pay attention to is energy consumption. This is especially true for large units that operate around the clock, such as two-chamber models with a No Frost system or a crying evaporator. The brand Atlant has been a leader in the CIS market for many years, offering reliable solutions, but the question of exactly how many watts a particular device consumes often remains open.
The power of a two-compressor refrigerator is not just a number in the passport, but a complex indicator depending on the volume of the chambers, type refrigerant, quality of thermal insulation and, of course, electronics operating algorithms. Unlike single-compressor analogues, two independent motor-compressors are installed here, which theoretically can increase peak consumption, but in practice often allows saving resources due to more accurate temperature control in each compartment.
In this article we will analyze in detail what Atlant equipment depends on, how to calculate real energy costs and why the 300-400 declared by the manufacturer Watts may differ from actual meter readings in different seasons of the year. Understanding these nuances will help you not only choose the right voltage stabilizer, but also optimize utility costs. rated power Atlant technicians, how to calculate real electricity costs and why the 300-400 Watts declared by the manufacturer may differ from the actual meter readings in different seasons of the year. Understanding these nuances will help you not only choose the right voltage stabilizer, but also optimize your utility costs.
Nominal and peak power: what is the difference
Many users confuse the concepts of rated and starting power, which leads to errors when selecting uninterruptible power supplies or generators. Rated power is the average value of energy that the refrigerator consumes in normal operation, when the compressor has already entered the operating cycle and maintains the set temperature. For two-compressor Atlant models, this figure usually varies in the range from 120 to 250 Watts per hour if one compressor is running, and doubles when both are started simultaneously.
The situation changes dramatically when the motor is turned on. Starting current may exceed the rated ones values 3, and sometimes 5-7 times. This is due to the fact that the electric motor requires significant force to move the piston group and begin circulating the refrigerant in the system. That is why in the technical documentation you can find figures up to 1000-1500 Watts, but they are relevant only for a fraction of a second.
⚠️ Attention: When using inverter compressors in new Atlant models, the starting currents are much lower, since the engine starts smoothly, without a sharp jump in the load network.
It is also important to consider that the two-compressor circuit implies independent operation of the circuits. This means that the probability of both motors starting at the same time is statistically small, unless you defrosted a completely empty refrigerator or loaded it with a lot of warm food at once. In normal mode, one compressor cools the freezer compartment, and the second cools the refrigerator compartment, and their operating cycles are rarely perfectly synchronized.
Factors affecting the energy consumption of models Atlanta
Why can two refrigerators of the same series consume different amounts of electricity? The answer lies in a combination of technical and operational factors. Energy efficiency class (A, A+, A++) is only a basic guideline obtained under ideal conditions. In real life, energy consumption is affected by:
- 🌡️ Ambient temperature: the hotter the room, the more often the compressors turn on to remove heat.
- 🚪 Frequency of door openings: each time warm, humid air penetrates inside, forcing the system to work more intense.
- ❄️ Presence of a No Frost system: fans and defrost heaters consume additional energy, unlike a static system.
- 📦 Loading of chambers: a full refrigerator keeps the cold better, but more power is required for the initial cooling of a large volume of food.
Particular attention should be paid condition door seals and cleanliness of the capacitor. If the rubber does not fit tightly, the cold goes away, and warm air constantly flows in, forcing the compressors to work almost non-stop. In such cases, the power consumed from the network can increase by 30-40% of the norm.
The type of refrigerant also matters. Modern Atlant models often use R600a (isobutane), which has excellent thermophysical properties and allows you to reduce the pressure in the system, which has a positive effect on the load on the compressor motor.
Comparative power table of popular series
To give you a complete idea of the scale energy consumption, we will analyze the technical characteristics of the most common series of two-compressor refrigerators from the Belarusian manufacturer. The data is averaged, since within one series there may be modifications with different volumes and energy saving classes.
| Atlant refrigerator series | Compressor type | Rated power (W) | Energy efficiency class |
|---|---|---|---|
| Series 40 (New) | Linear / Inverter | 110 - 140 | A+ / A++ |
| Series 45 (XM-45...) | Linear | 130 - 160 | A / A+ |
| Series 60 (No Frost) | Linear | 150 - 190 | A / A+ |
| Series 170 (Design) | Linear | 140 - 170 | A+ |
| Series 80 (Built-in) | Linear | 120 - 150 | A+ |
As seen from tables, more modern series strive to reduce power consumption due to improved thermal insulation and optimized electronics operating algorithms. However, models with the system No Frost will always have slightly higher performance due to the presence of additional heating elements and fans.
It is worth noting that the rated power indicated in the table refers to the operation of one compressor. In rare moments when both motors operate simultaneously (for example, after a long defrost), the total power can reach 300-350 Watts, which still remains within acceptable values for standard household wiring.
⚠️ Attention: Specifications may vary depending on the year of manufacture of a particular model. Always check the data with the sticker on the back wall of your device or the official website of the manufacturer.
Calculation of real energy consumption
Knowing the power, you can easily estimate how much money your refrigerator “eats” per month. However, simply multiplying watts by hours will not be enough since the compressor does not run continuously. It turns on and off to maintain the temperature. This parameter is called operation coefficient.
On average, a working refrigerator works approximately 20-30% of the time (about 5-7 hours a day). For calculations, we’ll take a 150-watt model. If we assume that the total operating time of both compressors per day is 12 hours (6 hours each, or 12 hours of operation of one of them in different periods), the calculation will be as follows: 0.15 kW * 12 hours = 1.8 kWh per day. For a month this will give 54 kWh.
However, in the summer, when the ambient temperature is high, the operating factor can increase to 50-60%. In this case, consumption will double. In winter, on the contrary, if the refrigerator is in a cool room, it can work only 15% of the time.
Exact calculation formula
(Power in kW) × (Operating hours per day) × (30 days) × (Tariff for 1 kWh) = Cost per month.
For owners of dual-compressor models, it is important to understand that the presence of two motors does not mean double consumption. On the contrary, separation of circuits allows each compressor to operate in a more gentle mode, reach the set temperature in its compartment faster and rest longer.
The influence of the operating mode on the network load
The two-compressor circuit has its own characteristics of influence on the electrical network of an apartment or house. The main advantage is load distribution. Instead of one powerful motor that creates a significant starting impulse, you have two less powerful units running. This reduces the risk of tripping circuit breakers in the panel, especially in older houses with aluminum wiring.
The electronic control unit in modern Atlant refrigerators (often called the “brains”) strictly controls the intervals between starts. Even if you just closed the door and one compressor started, the second one will likely start with a delay of a few minutes. This function intelligent control protects the network from overloads.
However, when using voltage stabilizers or UPSs, the total power must be taken into account. If you plan to connect the refrigerator to a generator, choose a device with a power reserve of at least 30-40% of the sum of the rated powers of both compressors.
☑️ Checking the network load
Typical problems and increased consumption
If you noticed that the electricity bill has increased, and the refrigerator is humming more often than usual, perhaps the equipment is not working correctly. There are a number of malfunctions that lead to an abnormal increase in power consumption.
One of the most common reasons is freon leak. When there is less refrigerant, the compressor is forced to work almost non-stop, trying to increase the temperature, but cannot do so. As a result, the meter spins very quickly, and the chambers are warm.
Another problem is a malfunction of the thermostat or temperature sensor. If the refrigerator's brains receive incorrect information that it is too warm inside, they will keep the compressor on all the time. Also leads to increased consumption:
- 🔌 Sticking of the compressor start relay.
- 🧊 Formation of an ice coat on the evaporator (in models without No Frost), which works as a heat insulator.
- 🌬️ Condenser clogged with dust on the rear wall, impairing heat transfer.
- 🚪 Damaged door seal, allowing warm air to pass through.
⚠️ Attention: Constant operation of the compressor without shutting down for more than 24 hours can lead to overheating and burnout of the windings. If you notice such a symptom, contact the service immediately.
Tips for saving energy
Owners of two-compressor Atlant refrigerators do not need to be experts to reduce consumption. It is enough to follow a few simple operating rules that will extend the life of the equipment and save your budget.
First, monitor the temperature in the room. The ideal range for refrigerator operation is from +16 to +32 degrees Celsius. If the kitchen is located next to a radiator or stove, operating efficiency decreases and energy consumption increases. Secondly, do not place hot food in the chamber. This is a direct way to increase the load on both compressors.
Use the possibilities of zone storage. Do not open the freezer if you only need food from the refrigerator compartment. Remember that every extra degree below the required level in the freezer (for example, -24 instead of -18) increases energy consumption by about 5-6%.
The secret of saving
Install the refrigerator away from heat sources and provide a gap of 5-10 cm from the wall for free air circulation around the condenser.
How many watts does the Atlant two-compressor refrigerator consume at startup?
The starting power can briefly reach 1000-1200 Watts, but this lasts only a fraction of a second. In wiring calculations, they are guided by a rated power of about 300-400 Watts when two motors operate simultaneously.
Is it true that two compressors consume more than one?
Not necessarily. Two low-power compressors are often more efficient than one large one, since they cool smaller volumes faster and stay in idle mode longer, which adds up to savings.
How does the energy efficiency class affect the light bill?
Models of class A++ consume 30-40% less energy than models of class B or C, with the same volume of chambers. The difference in the price of the device pays off in 3-4 years of operation.
Can an old Atlant refrigerator consume more than a new one?
Yes, older models have less efficient compressors, worse insulation and often operate with disturbed thermal conditions, which significantly increases energy consumption.
Is a stabilizer needed for two-compressor Atlanta?
Desirable if your network experiences frequent power surges. The electronics of modern models are sensitive to changes, and replacing the control unit can be expensive.