﻿Refrigerator power consumption: how much electricity it consumes + how to save

# How much electricity does the refrigerator consume? We understand how to choose an economical technique

Checked by a specialist: Evgenia Kravchenko
Author: Alina Zlobina
Last update: June 2019

The refrigeration unit occupies almost the most honorable place in any kitchen. Without it, it is impossible to store food and cooked foods for a long time. In the process of continuous operation, the equipment constantly spends energy. The power consumption of the refrigerator will tell us about its consumption. Agree: this is one of the important selection criteria.

We will talk about how to find an economical model, what characteristics you should pay attention to. In our proposed article, the selection rules are listed, the external factors affecting the energy consumption are listed. To facilitate the search, we present a rating of models with the “least appetite”.

## Main energy classes

Back in the 90s, all modern household appliances began to be divided according to the newly introduced classification of energy consumption. This applies equally to miniature light sources, as well as volumetric hot water tanks, washing units.

Now marking indicating the class inherent in a particular device is required.

By a sticker placed on the surface of the equipment, you can quickly find out how much electricity the refrigerator you like consumes per year, depending on its capacity. Such information must necessarily be duplicated in the technical passport of the unit

On average, the annual electricity consumption in kilowatt hours is in the range of 235-465 kW. Knowing the parameter, it is not difficult to calculate approximate daily or monthly numbers.

To do this, it is enough to divide the declared value by the number of days / months in a year - 365/12. For example, if the device consumes 230 kW / h annually, then the daily rate is approximately 0.63 kW / h. By a similar principle, monthly calculations are performed.

To see the most correct statistics, a small error should be considered. To the number obtained in the calculations, it is usually recommended to add three tenths

Classes of consumption are denoted by Latin letters in the range from A before G. Each of them is assigned a color graphic indicator for a more understandable perception. Some notations are supplemented by an index. «+».

Gradation is determined by dividing the actual value of consumption by a standard indicator. The first digit is established during the experiments.

The second is obtained as a result of calculations by a complex formula, in which many components are involved - the volume of departments, temperature, used technologies, climate class, etc. Information is provided to the user in the form of a percentage of energy consumed for a specific time period to specified standards.

The alphabet of energy consumption of refrigerators looks like this:

• A +++ - up to 22%;
• A ++ – 22-33%;
• A + – 33-42%;
• A – 42-55%;
• B – 55-75%;
• C – 75-95%.

The most economical and rational technique is considered category A with a green indicator of different shades, the most expensive - Gmarked in red. Aggregates A +, A ++, A +++ consume three times less than in generally accepted norms.

Devices below class WITH almost no longer available, as they are malicious wasters of light. Energy consumption of such refrigerators from 110 to 150%. These values ​​are far from the norm and can "fly into a pretty penny."

The medium-energy variant includes equipment marked B and C. It saves approximately 15 to 35% of resources.

In addition to the class and the annual percentage of energy efficiency, the refrigerator label contains information on the internal volume of cabinets, noise level, model and manufacturer name

The difference between refrigerators assigned to different categories of classification is quite significant. Unit type A ++ only 143 kW / h per year is needed, while its counterpart G consumes more than 900 kW / h for the same period.

Healthy to save the family budget will help the model A +++which are 50% more economical than even equipment that has a class A +. It is natural that they cost an order of magnitude higher, but subsequent savings will soon pay back the investment in the purchase with interest.

## Rules for choosing an economical refrigerator

Despite all the markings and miscalculations, the fact that how much electricity the purchased refrigerator will consume is influenced by many more circumstances.

Some of them are hidden in the design and configuration, others depend directly on the user and on how favorable conditions he will create for the operation of equipment.

The number of kilowatts consumed by the refrigerator per day, month or year is not calculated based only on data from the data sheet. The filling is also influenced by the parameters, which the manufacturer supplies with its development.

Wanting to find the most economical device, it is worth first considering the following nuances:

• number and type of compressors;
• cooling system;
• volume of cameras;
• tightness and thermal insulation;
• feature set.

Compressor. The assortment includes one- and two-compressor models of refrigeration units.

In single-compressor products, one motor is used to cool the refrigeration section and freezer. Otherwise, there are no fundamental differences, including energy efficiency.

As a rule, modifications with two motors are more convenient to use, since they provide more opportunities for effective temperature control and defrosting.

When choosing a technique, you need to pay attention not only to the quantity, but also to the type of compressor. In terms of energy consumption by a significant margin inverter models. The inverter operating mode is different in that it instantly sets the temperature to the set values ​​and constantly maintains it, smoothly changing power.

The inverter motor is economical, relatively noisy, wear-resistant, does not create large loads on the network. It is designed for a long service life of at least ten years.

An ordinary compressor, however, reaches the required marks for longer, at the same time it turns on at full power, and then it turns off. As soon as the sensor detects temperature changes, temperature controller starts the mechanism again. This adjustment technique is called stepped. In terms of saving electricity, it is imperfect.

Cooling system. Modern refrigeration units are equipped with two main cooling systems - drip or Norost. In devices with a drip system, an evaporator that maintains a cold temperature is located on the back wall. Over time, the formed ice flows down into the tray where it evaporates.

Innovative technology Norost involves dry freezing, in which frost does not appear and ice does not freeze. The evaporator is integrated above the freezer compartment or behind the back of the device. Products are frozen in the process of blowing with cold air, which is provided by fans.

Once every few hours, the fan stops, at this time the heating component is turned on, the melt liquid is transferred through special grooves to the tray and evaporates. Such refrigerators do not need defrosting.

System "Without hoarfrost" includes several subspecies - Full no frost, Total no frost. There is also a combined cooling uniting two main types. The traditional cooling system is more economical in energy consumption.

Due to the presence of additional fans and a powerful heater, NoFrost technology is more demanding on energy resources.

They increase the energy consumption and the complex functions that the refrigerator is endowed with: highlighting individual components, quickly freezing a large volume of products, automatic defrosting, dispensing ice

Number and size of cameras. As for the number of compartments, the best option for the consumer is two-chamber models. Single-chamber brothers are not so “gluttonous”, but they are usually installed only in those rooms where the space does not allow to accommodate impressive dimensions.

The energy consumption index is also affected by the volume of refrigeration equipment: the larger it is, the more noticeable the consumption.

Tightness. Before buying a refrigerator, you need to check the quality seals and heat insulating body configurations. Their insufficient reliability is dangerous due to excessive loss of chilled air, which provokes an increased load on the compressor and, accordingly, increases energy consumption.

On the consumed kilowatts, even the color of the product is reflected. It was found that silver material has a lower emissivity and slower heat loss.

## The influence of external factors on energy consumption

To achieve high-quality functioning in the mode of the greatest possible savings, any refrigerator needs to provide the necessary conditions. Most of them are indicated by manufacturers in the instructions that came with the product.

In general, energy consumption will depend on:

• air temperature in the room where the device is installed;
• degree of congestion of food in working chambers
• frequency of closing / opening doors;
• timely defrosting.

Ambient temperature - one of the leading criteria. In the process of research and scientific experiments, it was proved that refrigerators operating in rooms where average readings of 16-17 degrees Celsius are recorded save the budget about 1.5 times.

This does not mean that the equipment can be installed in a critically cold environment. Under such conditions, the compressor simply will not turn on or, worse, completely fail.

Refrigeration units, which are located in kitchens, where the air temperature is about 30 degrees, consume twice as much energy relative to the norm

Camera load. Before filling the refrigerator with products, you should study the technical parameters and recommendations of the manufacturer in this regard. You should never load it “to the eyeballs”.

It is also worth distributing the provisions on the shelves and departments evenly, otherwise the air circulation will be difficult, which is also not the last value for energy consumption.

Defrost. If the refrigerator is not equipped with an automatic system, do not forget about regular independent defrosting.

Excessive growth of ice and snow crust on the walls leads to deformation of parts, lower heat transfer and increased energy consumption

Exploitation. Frequent opening of the unit door immediately increases the load on the motor. This is due to the fact that the cooled air accumulated inside quickly goes out. Accordingly, to make up for losses, the device begins to work at maximum power, increasing electricity consumption.

## TOP-5 economical refrigeration units

Having set the goal of acquiring the most economical model, you should study the proposals of leading manufacturers in more detail. The range of refrigeration equipment is rich and it is not difficult to choose the best option that meets the needs.

We offer you to get acquainted with 5 economical units from the best manufacturers.

### Model # 1 - Liebherr CBN 4815

The Liebherr brand CBN 4815 is notable for its high price, amounting to an average of 72 thousand rubles, but also the most economical consumption category at the moment - A +++.

The energy consumption of the model CBN 4815 under consideration is much lower than average: 186 kW / h per year, 15 kW per month and 0.51 kW / h per day

Despite such modest needs, the manufacturer managed to combine many innovative developments in the unit. It provides convenient flexible temperature settings using the touch screen, the option of super-freezing, a built-in activated carbon filter that purifies the air of bacteria and contaminants.

The doors are protected by a reliable replaceable seal corresponding to the color of the body. The only drawback of the modification follows precisely from the main advantage - profitability.

The Liebher brand refrigerator has a decent volume of 343 liters, is equipped with a NoFrost system and an additional freshness area BioFresh

We are talking about the low power of the compressor, which for a long time catches up cold when turned on. To enter normal operation, it takes about a day, despite the fact that most modern and Soviet refrigerators reach the desired temperature within 10-30 minutes.

Of the additional features, Liebher CBN 4815 has a super-cooling and super-freezing mode, as well as a light and sound indication that informs the owner of an open door and an increase in temperature

The following video demonstrates the basic capabilities of the model and the layout of the internal space of the working chambers to help form your opinion about CBN 4815:

In a wide range of Liebherr products, in addition to the refrigerator we presented, there are a number of excellent models. They have earned the recognition of both owners and repair technicians, who rarely have to restore their performance. Compiled by us rating of refrigerators help you choose the best option.

### Model # 2 - LG GA B489 YEQZ

Roomy and high technology GA B489 YEQZ brand LG equipment class A ++ is cheaper than the previous model. The cost of this model starts from 51 thousand rubles.

The total volume of the internal departments of the refrigerator GA B489 YEQZ is 360 liters. He is praised for his stylish design and thoughtful ergonomics.

Energy consumption indicators - 237 kW / h per year, 20 kW / h per month, 0.65 kW / h per day. The unit operates on an economical and relatively quiet inverter compressor. It has a ten-year warranty period.

No frost applies to both chambers, so the freezer compartment does not need to be defrosted manually. Each compartment has LED backlighting.

The design provides for a separate folding shelf. Having quickly folded it, you can free up a lot of space, which is not enough for tall cans and pans

A feature of the model is the unusual structure of the block cover for vegetables / fruits.In it, cells have been made that trap condensate, preventing droplets from falling onto the products.

Thus, the optimal humidity is maintained, which is necessary to preserve the taste and beneficial properties.

The refrigerator has a zero zone for short-term storage of fresh seafood and meat, the function of quick freezing, holidays and others

In addition to the model described by us, the assortment offered to the consumer has a number of interesting offers, with the best refrigerators LG will familiarize us with our recommended article.

### Model # 3 - Bosch KIS87AF30

German-built-in appliances, distinguished by an interesting design and compact dimensions, are the ideal solution for cramped kitchen spaces.

The Bosch KIS87AF30 refrigerator is characterized by A ++ class, in which it consumes 226 kW / h per year, 19 kW / h per month, 0.62 kW / h per day. At the same time, its cost is an average of 49 thousand rubles.

The claimed volume of both chambers is 272 liters. They have many branches and zones designed for various types of products.

Equipment is controlled through an electronic sensor unit that allows you to set a favorable temperature regime for both the refrigerator and the freezer compartment.

The inner surface is treated with an antibacterial mixture that inhibits the spread of microorganisms and bacteria.

Bosch's KIS87AF30 features quick cooling and freezing, audible indication of an unclosed door, and vacation mode. The device works almost silently

A line of popular German refrigerators of the brand Bosch The next article will be devoted to the analysis of their features and characteristics.

### Model # 4 - Samsung RB-31 FERNCSA

Model Samsung RB-31 FERNCSA with a set of good technical specifications and affordable price.

The manufacturer indicates A ++ as the energy consumption class, however, consumers note that the actual figures nevertheless correspond to the A + category

At the declared level, the parameters are in mode "Vacation". Nevertheless, the unit is quite economical: 257 kW / h per year, 21.5 kW / h per month, 0.70 kW / h per day. The volume of the chambers in the refrigerator is rather big - 304 liters. They have a well-organized interior space.

Structural elements such as a sauce tray, a convenient drawer in the freezer, and a shelf on wheels allow you to quickly extract the necessary products from the farthest corners of the chamber. For meat and vegetables made a special department with a freshness zone.

Thanks to True No Frost technology, food is evenly cooled without the formation of frost and ice crusts on the inner walls and surface of products

An inverter motor is built into the device, functioning in five effective modes. It is noiseless, quite durable, not afraid of fluctuations in the power supply network.

The South Korean manufacturer supplies excellent home appliances to the market, including functional and reliable refrigerators, the characteristics of which we propose to get acquainted.

### Model # 5 - Siemens KG39NXB35

Stylish Siemens KG39NXB35 with thoughtful technical content and touch controls. Energy class - A ++. For full-fledged work, it spends 273 kW / h per year, 23 kW / h per month, 0.74 kW / h per day.

The refrigerator is endowed with the possibility of quick freezing followed by automatic shutdown. And also autonomous maintenance of the cold for 17 hours with a streamlined multi-threaded cooling system

The useful volume of equipment is impressive and amounts to as much as 366 liters. A freshness zone is integrated inside the refrigeration department, providing the necessary conditions for long-term storage of vegetables and fruits.

In addition to standard adjustable tempered glass shelves, there is a chromed metal grill for bottles. A freeze calendar is provided in the freezer.

An expert video review will help to understand the capabilities of the model in more detail:

The best refrigerators from the eminent German concern presented here: The rating is based on feedback from users and service workshop representatives.

## How to prevent over-consumption of electricity?

The actual energy consumption figures for which you will have to pay on receipts largely depend on the correct installation location and compliance with the normal operating conditions of the refrigerator.

It is not recommended to store liquid in open containers in refrigerator chambers. Such neglect of the operating rules interferes with the normal functioning of the evaporator

In order not to be upset because of too high amounts, you should find out in advance how to choose a refrigerator, and take note of some useful tips:

1. Do not set the temperature in the freezer at the lower limit of the norm, unless large volumes of food are planned to be stored in the chamber for a long period.
2. Set the temperature controller taking into account the fullness of the unit and the temperature of the environment.
3. Open the appliance doors only when reasonably necessary. Keep the equipment open for a minimum time, and then close the door tightly.
4. Before putting food and food in the refrigerator, cool them to room temperature.

When installing equipment in a room, you must leave a gap between the back of the case and the wall. The minimum gap is 10 cm. The same applies to the sides. It is advisable that the appliance does not come in direct contact with adjacent furniture and appliances.

There should be no heating equipment near the installation site. You must try to protect it from close contact with radiators, stoves, ovens and other sources of heat.

## Conclusions and useful video on the topic

An experiment to measure the amount of energy consumed by a two-compressor refrigerator per day:

Economical life hack from one of the users:

Having set out to purchase a refrigerator, which will become an excellent assistant in everyday life and will not increase the total amount in monthly light bills to exorbitant numbers, it is enough to take into account the above rules and tips.

When choosing an economical unit, it is wiser to focus on a high-quality two-chamber class A model with an inverter motor and only those functions that are really necessary.

Please write comments, post photographs and ask questions about the topic of the article in the block below. Tell us about how to choose a model of the refrigerator, how much electricity is required to operate your chiller. It is possible that you own information that will be useful to visitors to the site.

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Visitors Comments
1. Before buying, we always intuitively paid attention to the class of the refrigerator and always chose A +++ without even knowing what this means. You can’t save on a refrigerator, since it is bought for many years, and the quality of products depends on it. For example, in our old refrigerator perishable foods were stored for only 3 days, while in the new Bosch it lasts up to 5 days and uses electricity more economically.

2. Nikita

Well, after all, energy saving is far from the main criterion by which it is worth choosing a refrigerator and household appliances in general. To be honest, I generally perceive all these A with pluses more as an advertising move from branded companies.The size of the refrigerator, the number of chambers, the presence and location of the freezer, functionality, and most importantly - the price. All this is much more important.

• Ekaterina

Not basic, but all else being equal, why not take a refrigerator that “eats” little electricity? If you select energy-saving appliances in your home, the savings will be substantial.