The choice of a refrigerator is always a balance between the initial cost of equipment and future electricity costs. Many buyers look only at the volume of cameras and design, forgetting about the sticker with colored stripes on the front panel. It is this that indicates energy efficiency classwhich directly affects the amount in the receipt for light at the end of the month.
The modern market is overflowing with models labeled from A to G, and it is difficult to understand this variety without preparation. The old designations A+, A++ and A+++ are becoming a thing of the past, giving way to a new scale, where even the letter A may not mean the most economical option. Understanding these differences will help you avoid overpaying either in the store or for utilities.
In this article we will take a detailed look at which class of refrigerator is best for your family, how to calculate the real payback and why it is sometimes more profitable to buy a more expensive but economical model. You will learn about the intricacies of compressor operation and how technical parameters affect the final class of the appliance.
What is the energy efficiency class of a refrigerator
Energy efficiency class is an indicator that characterizes the economical consumption of electricity by a household appliance. It is calculated by the manufacturer based on laboratory tests, which compare the actual energy consumption for the year with the reference value for refrigerators of a given volume. The higher the class, the less electricity your refrigerator “eats” while maintaining the same cooling functions.
Initially, the scale was simple: from A (the most economical) to G (the most energy-intensive). However, technology developed rapidly, and models appeared that consumed 40-50% less energy than required for class A. In order not to introduce a new letter, they came up with “pluses”: A+, A++ and A+++. This has led to confusion, since the difference between A and A+++ is colossal, but visually they look similar.
In March 2021, an updated scale began to be implemented in the European Union, and then in a number of other countries, including Russia. The letters A through G are now used again, but the requirements for obtaining each have become more stringent. For example, an old refrigerator class A+++ can now only correspond to class C or D on the new scale. This is done in order to encourage manufacturers to create even more advanced devices.
⚠️ Attention: When purchasing, pay attention to what scale the device is marked on. If you see only the letters A-G without pluses, most likely this is a new marking, where class A is an exclusive super-economical equipment, and the mass market starts with classes C or D.
It is important to understand that the energy efficiency class depends not only on the power of the compressor. The final letter is influenced by:
- 🧊 The quality and thickness of the thermal insulation of the chamber walls.
- ❄️ The type of refrigerant used and the efficiency of the circulation system.
- 🔌 The presence of an inverter motor that does not operate at the power limit.
- 💡 Type of backlight (LED consumes less than incandescent lamps).
Decoding of markings: from old A+++ to new G
In order not to get confused in numbers and letters, it is necessary to clearly distinguish between the two marking systems that now coexist on store shelves. The old system with its advantages is still found in warehouses and in the remains of collections, while the new one becomes the standard for all new products.
In the old system, the leader was the class A+++. Such refrigerators consumed less than 30% of the reference value. Next came A++ (30-42%) and A+ (42-50%). Models with classes B and C were considered ineffective and gradually disappeared from production. However, the presence of three pluses often misled the buyer: the difference in consumption between A+ and A+++ could reach 50%, although visually the difference seemed insignificant.
The new scale (A-G) “reset” the achievements. Now class A is assigned only to those models that consume less than 24% of the standard. This is such a strict criterion that at the moment almost no ordinary household refrigerator reaches the letter A. The bulk of high-quality models are now in the range C and D. Classes F and G are simple, budget units with high consumption.
For clarity, let’s compare how classes and annual consumption correlate (averaged for a refrigerator with a volume of 300 liters):
| Old marking | New marking | Consumption (kW/year) | Efficiency assessment |
|---|---|---|---|
| A+++ | A, B, C | up to 150 | Maximum |
| A++ | D, E | 150 – 220 | High |
| A+ | F | 220 – 300 | Average |
| A, B | G | more than 300 | Low |
Why did classes A and B disappear in the new labeling?
Manufacturers or these places for future technologies. It is expected that in 5-7 years there will be refrigerators that will be able to reach the real class A of the new scale thanks to the use of vacuum insulation and new types of compressors. Now these letters are “a foundation for the future.”
Factors influencing the assignment of a class
Why is one refrigerator with two doors class D, and another, almost identical in size, class C? The answer lies in the design details. The main consumer of energy is compressor. Older models used conventional motors that either ran at full power or shut down. Inverter compressors, on the contrary, smoothly regulate the rotation speed, maintaining the temperature without sudden jumps and unnecessary energy costs.
The second critical factor is tightness and insulation. If the door seals do not fit tightly or cheap foam is used in the chamber walls instead of modern foam with an improved cell structure, the cold will go away faster. The compressor will have to turn on more often to compensate for heat loss, which automatically reduces the energy efficiency class.
Additional functions also have an impact. A zone Super Freeze, ice maker, door display or Wi-Fi module require constant, albeit small, power. The presence of the system No Frost also increases energy consumption compared to a drip defrosting system, since defrosting fans and heating elements consume electricity.
Cost comparison: is it worth overpaying for a high class?
This is the most important question for any buyer. Let's do the math. The price difference between a refrigerator class G (or old A) and class A+++ (new C/D) can be 15-20 thousand rubles. Will this overpayment pay off?
An average refrigerator consumes about 200-250 kWh per year. A model of a high efficiency class (A+++) will spend about 150 kWh, and a low class (G) - about 350 kWh or more. With a tariff, for example, 5 rubles per kWh, the difference will be:
(350 - 150) * 5 = 1000 rubles per year.
It would seem not much. But the service life of a modern refrigerator is 10-12 years. During this time, you will save 10-12 thousand rubles on electricity alone. If tariffs increase, which happens regularly, the amount of savings will be even more impressive. In addition, high-end equipment is usually assembled from higher quality components, which reduces the risk of breakdowns.
⚠️ Attention: Calculations are relevant for standard operating conditions. If you live in a region with very low electricity rates, the payback period may extend over the entire life of the device. In this case, overpaying for class A+++ may not be advisable from a financial point of view.
However, there is a downside. The cheapest class G models often do not have even basic functionality, are inconvenient to use and are noisy. Therefore, choosing a class is not only mathematics, but also a matter of comfort.
The influence of the type of compressor and defrosting system
You cannot choose an energy efficiency class in isolation from the “filling” of the refrigerator. As mentioned, inverter compressor is the key to high class. It allows you to achieve A++ and A+++ (on the old scale). Conventional linear compressors rarely boast a class higher than A+ or B.
The defrosting system also plays a role. No Frost (full) requires more energy to operate the fans and periodically heat the evaporator to remove frost. The drip system (crying wall) is more economical, as it uses natural convection and rare activation of the heating element only in the rear wall. However, the difference in consumption between modern No Frost and drip models is reduced due to improved insulation.
If maximum savings are your priority, and not having to defrost manually is not critical, you should take a closer look at models with a drip system in the main chamber. They often have a higher energy efficiency class with less noise.
☑️ Check before purchasing an economical model
Top classes: which one to choose for different situations
There is no universal answer to which class is better. The choice depends on your financial capabilities and plans for the future. Let's look at the scenarios.
Scenario 1: “I take it for a long time”. If you are planning to buy a refrigerator for 10-15 years and want to forget about high bills, your choice is models with the highest available class (A+++ for the old one or C/D for the new one). Yes, you will overpay at the start, but after 5-7 years the device will begin to “break even” due to savings.
Scenario 2: “Limited budget”. If every thousand rubles is in your account right now, take class B or C (on the old scale) or F (on the new scale). This is the “golden mean”. They are not as voracious as the old Soviet units, but they also cost reasonable money. Avoid only class G and below - these are real “ovens” that can ruin the wiring in an old apartment.
Scenario 3: “Rented apartment or temporary housing”. There is no point in overpaying for energy efficiency. It is better to take an inexpensive, middle-class model so as not to regret the investment when moving.
Frequently asked questions (FAQ)
Is it true that a class A+++ refrigerator is quieter?
Not necessarily. The energy efficiency class only talks about electricity consumption. However, often (but not always) manufacturers install more expensive inverter compressors in such models, which actually operate quieter than usual. But silence depends more on the type of motor and build quality, rather than on the letter on the sticker.
Is it possible to change the energy efficiency class of a refrigerator?
No, this is a technical characteristic included during the design. You cannot "reflash" a refrigerator. The only thing you can do is to provide it with the correct operating conditions (move it away from the wall, check the seals) so that it does not consume more than stated.
Does the color of the refrigerator affect its class?
The color of the body itself does not. But if the refrigerator is built-in, then the presence of a decorative panel can worsen heat transfer, causing the motor to work more intensely. Also, black or dark gray refrigerators standing in direct sunlight can heat up more, which will indirectly increase energy consumption.
Is it worth buying a refrigerator without markings?
Most likely, this is a very old model or a “gray” import. Such devices usually have a low energy efficiency class (G or lower) and are outdated in design. You can buy them only as a last resort, understanding that you will have to pay a lot for light.