Buying a new refrigerator always begins with studying the characteristics, and one of the first things that catches your eye is a sticker with colored stripes and letters. Many buyers are automatically drawn to the model with the greenest label, believing that the class energy consumption A guarantees minimal electricity bills. However, behind this letter lies a complex calculation system that has changed over the past decades, and understanding these nuances can significantly affect the final amount of the check.
The modern market for household appliances is full of abbreviations, and it is easy to get confused in the differences between the old standard A and new, more efficient ones classes A+, A++ or A+++. It is important to realize that the letter on the label is not just a marketing ploy, but the result of laboratory tests showing how effectively the compressor and insulation system retain cold with minimal resource expenditure. In this article we will analyze in detail what is hidden behind the marking, how it affects the family budget and whether it is worth pursuing the maximum number of advantages.
It is worth noting right away that the concept of “class A” today can be interpreted in two ways depending on the year of manufacture of the equipment and the country of origin. Whether you're shopping for an old but new-in-the-box refrigerator from a few years ago or looking at the used market, you'll come across one grading system. If we are talking about the newest models that went on sale after the introduction of updated European standards, the scale could shift, and the former top could turn out to be in the middle. It is necessary to understand this before paying for the goods at the checkout.
The essence of energy efficiency labeling
Energy efficiency class is an indicator that determines the ratio of the useful operation of the refrigerator (cooling the internal volume) to the consumed electrical energy. In simple words, this is the coefficient of performance (COP) of your unit. Energy consumption measured in kilowatt-hours per year (kWh/year), and it is this figure that determines how much money you will give to the energy sales company. The lower the number for the same volume of chambers, the higher the class and the lower the cost of owning the equipment.
Historically, the scale began with the letter A as the highest. However, technology does not stand still, and engineers have managed to create compressors and refrigerants that work more efficiently than originally expected. In order not to invent new letters, it was decided to add pluses. Thus, the regular class A over time became the basic, minimum acceptable standard for sale in many countries, giving way to more economical modifications. Nowadays, equipment labeled simply “A” (without pluses) is becoming less and less common and often refers to the budget segment or small models.
⚠️ Attention: From March 1, 2021, a new energy efficiency scale came into force in the European Union and the EAEU countries. Now the classes are again designated by the letters A to G, but the requirements for them have become more stringent. What used to be A+++can now correspond to a class C or D on a new scale. Always check which system a particular model is certified by.
It is important for the consumer to understand that the difference in consumption between neighboring classes can range from 10% to 15%. At first glance, this is not much, but considering that the refrigerator is the only appliance in the house that works 24 hours a day, 365 days a year, the annual savings become noticeable. Electricity consumption directly depends on the quality of the thermal insulation of the case, the type of compressor (regular or inverter) and the presence of additional functions, such as an ice maker or display.
Evolution of standards: from A to G
To read the label correctly, you need to know the history of changes in standards. For a long time, until the 2010s, class equipment was considered the most effective. A. Then came A+ (10% more economical than A) and A++ (20-25%). The pinnacle of progress was the class A+++, which consumed 40-50% less energy than the basic standard. However, this gradation led to the fact that 90% of sold refrigerators had classes A+ and above, and the letter “A” lost its original meaning of “best.”
The new system, designed to simplify the choice, returned the scale to the form from A to G, where A again means the highest efficiency, and G — the smallest. It is important to note that at the time of the introduction of the new rules, class “A” equipment according to the new scale practically did not exist in mass production. This was done specifically to encourage manufacturers to develop technology. Therefore, a refrigerator marked “C” according to the new standards may be more efficient than “A+++” according to the old ones.
Below is a table showing the approximate correspondence of the energy efficiency index (EEI) to classes according to the old and new systems. The index shows the percentage of consumption from the base reference value.
| Old class | Index (EEI) | New class | Index (EEI) |
|---|---|---|---|
| A+++ | < 30 | A | < 41 |
| A++ | 30 - 42 | B | 41 - 51 |
| A+ | 42 - 55 | C | 51 - 64 |
| A | 55 - 75 | D | 64 - 80 |
| B | 75 - 90 | E | 80 - 100 |
When choosing equipment in a store, be sure to pay attention to the QR code on the label. By scanning it with a smartphone, you will be taken to the database Eprel, where the exact technical parameters of the model are indicated. This will help avoid confusion between old and new markings, especially if you are comparing models from different model years. Feel free to use technology to verify the stated characteristics.
Why did they change the scale?
The system was changed because the A+++ class became too common and no longer encouraged manufacturers to improve technology. The new scale “stretches” the standards, leaving room for future progress and making the difference between classes more noticeable to the buyer.
Real consumption: the mathematics of savings
Let's move from theory to numbers. How much does a class refrigerator A and its more modern analogues actually “eat”? The average volume of the refrigerator compartment is about 250-300 liters. For this volume, the basic consumption (class D or old B) could be around 400-450 kWh per year. Class A+ will reduce this figure to 350-380 kWh, and A+++ to 220-250 kWh.
To understand the financial benefit, let's multiply these numbers by the electricity tariff. If we take the average cost of 1 kWh equal to 5 rubles (the figure is conditional, depending on the region), then the difference between class B and class A+++ will be:
- 📉 Class B (450 kWh): 2250 rubles per year.
- 💰 Class A+++ (230 kWh): 1150 rubles per year.
- 🏆 Savings: 1100 rubles annually.
It would seem that 1100 rubles is not such a big amount to overpay for an expensive model. However, the service life of a modern refrigerator is 10-15 years. During this time, the accumulated savings can reach 11,000 - 16,000 rubles. It is with this amount that you can buy groceries or cover part of the cost of new equipment in the future. In addition, more efficient refrigerators are often equipped with inverter compressorsinverter compressors
However, there is a nuance: the consumption declared by the manufacturer is measured under ideal laboratory conditions. In real life, consumption is affected by how often the doors are opened, the temperature of the food you put in there, and the ambient temperature in the kitchen. If the refrigerator is standing next to a hot stove or the sun is shining on it, no class energy efficiency will save you from increased consumption.
Technologies that provide class A and higher
How do manufacturers manage to achieve high savings rates? The secret lies in a set of engineering solutions. First of all, this concerns the compressor - the “heart” of the refrigerator. Traditional compressors operate in a “start-stop” mode: they turn on at full power, cool the chamber to a set temperature and turn off. Every time you start there is a current surge. More modern ones inverter compressors do not turn off completely, but only slow down, maintaining the temperature. This allows you to save up to 30% energy.
The second important factor is the quality of thermal insulation. The walls of modern refrigerators of the A++ i A+++ class are thicker than those of older models due to the use of more efficient foam materials. Vacuum insulation is also used in premium models. The third element is the refrigerant. The transition to gases with low global warming potential (for example, R600a) also helps to increase the efficiency of heat transfer.
Do not forget about the control system. The electronics precisely dose the work of the cooling elements, adapting to the load. For example, if you've just loaded a bag of room temperature food, the smart system will briefly increase power and then return to economy mode. In models with the function No Frost energy consumption may be slightly higher due to the operation of fans and defrosting heating elements, but modern algorithms minimize these losses.
☑️ What to look for when buying an economical refrigerator
Factors, influencing household consumption
Even the most advanced class refrigerator A can become an “energy vampire” if it is not used correctly. The first and most important enemy of saving is the rubber seal on the doors. If it is dirty, damaged or simply does not fit tightly, the cold will escape and the compressor will work without interruption. You can check the tightness using a regular sheet of paper: clamp it with a closed door and try to pull it out. If the sheet comes out too easily, the seal requires replacement or cleaning.
The second factor is the location of the equipment. The refrigerator needs air to remove heat from the condenser (the grilles on the back or sides). If you push the unit into a niche close to the wall or force the sides with pots, heat transfer is disrupted. The compressor overheats and consumes more electricity. The minimum gap from the wall should be 5-10 cm. It is also not recommended to place the refrigerator near heat sources: radiators, ovens or in direct sunlight.
⚠️ Attention: Never put hot foods in the refrigerator. Cooling one liter of soup from 90°C to 4°C will require a significant amount of energy, for which you will pay. Let the food cool to room temperature before putting it on the shelf.
The third aspect is defrosting. If you have a refrigerator with an old defrosting system (drip or manual), a layer of ice on the evaporator just 5 mm thick increases energy consumption by 15-20%. Ice acts as a heat insulator, preventing cold from penetrating into the chamber. Regular defrosting (once every 6-12 months) is required to maintain the declared efficiency class.
Is it worth overpaying for A+++?
This is the main question that arises for the buyer. The price difference between a refrigerator class B (or simply A according to the old classification) and a model A+++ can range from 20% to 50%. Will this overpayment pay off? The answer depends on your situation. If you buy equipment for a long term (10+ years), live in a region with high electricity tariffs, or plan to use the refrigerator intensively (large family), then the overpayment is justified.
In addition to direct savings on bills, equipment of higher efficiency classes often has better build quality, quieter operation and expanded functionality. When you buy a “top” energy-saving refrigerator, you often get a more reliable device overall. However, if the budget is limited, and the refrigerator is needed as a temporary solution or for a summer cottage, where it will only work in the summer, there is no point in chasing maximum performance.
It is also important to take into account the environmental aspect. Reducing energy consumption reduces the load on power plants and CO2 emissions into the atmosphere. For many users, this becomes a decisive factor that outweighs dry payback calculations. By choosing class A and above, you contribute to preserving the environment.
Frequently asked questions (FAQ)
Is it possible to determine the energy consumption class without a sticker?
Exactly - no, only in the laboratory. However, high efficiency is indirectly indicated by: an inverter compressor (often written on the case), thick walls, the absence of protruding radiator grilles (hidden in the walls), and the presence of Energy Star type certificates. But relying on these signs is risky.
Does the volume of the refrigerator affect the energy efficiency class?
Yes, directly. The class is calculated based on the useful volume. A small refrigerator uses fewer watts in absolute terms, but may be rated worse if it is inefficient for its size. It is the letters, not the numbers, of kWh on the label that need to be compared, since the standards for different volumes are different.
Is it true that No Frost refrigerators consume more?
This used to be the case, but modern No Frost systems have learned to be very efficient. The difference in consumption between a drip system and No Frost of the same class (for example, A++) is minimal and is often unnoticeable in payments. The main advantage of No Frost is the absence of the need for manual defrosting, which indirectly also saves energy (ice does not freeze).
What to do if there are two different stickers on the refrigerator (old and new)?
This happens when switching to new standards. Focus on the one that corresponds to the production date and region of sale. If the equipment was recently produced for the EU/EAEU market, the A-G scale is relevant. If these are warehouse balances from previous years - A+++. In any case, the QR code will provide accurate information.
Will the efficiency class decrease over time?
Formally, the sticker will not change, but the real efficiency will drop. After 5-7 years of operation, the compressor wears out, the seal dries out, and the heat exchangers become dirty. In fact, after 10 years, a class A+++ refrigerator can operate as a class A or B. Regular maintenance (cleaning the condenser, replacing the seal) helps maintain the original performance.