How much electricity does a refrigerator use? This question especially often arises towards the end of the next month, when receiving electricity bills from utilities. The refrigerator is a fairly powerful unit. It is considered the main consumer of electricity for two seemingly rational reasons:
- In terms of dimensions, this is the largest electrical appliance in almost any home;
- Unlike, for example, a TV, microwave oven and other electrical and household appliances, it is connected to the mains continuously.
In fact, these two factors do not have such a strong influence on the level of electricity consumption today. And it is not always the refrigerator that consumes the largest number of watts per hour and even per month. Everything is a little more complicated than it might seem.
First of all, the amount of energy consumed, whether per hour, month or year, determines the so-called energy class. Let’s get acquainted with it in more detail.
Refrigerator energy class
The energy consumption classes of refrigerators have long been established by world standards, which are valid and the same for all countries of the world. They are designated in Latin capital letters, each of which means a certain percentage of power from the standard level.
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- «A ++» the highest class, installed on household appliances with maximum energy saving, energy consumption is up to 30%;
- «A +» class: power «30-42%»;
- «A» class: power «42-55%»;
- «B» class: power «55-75%»;
- «C» class: power «75-90%»;
- «D» class: power «90-100%»;
- «E» class: power «100-110%»
- «F» class, the highest energy consumption can be found only on outdated equipment, the power is 110-125% of the standard.
You can find out what class of power consumption this or that refrigerator belongs to, and how much energy it consumes per month from the instructions or description. Sometimes a marking is also applied to the unit itself in the form of a letter, or the number of kilowatts consumed by it is immediately indicated. The absence of such marking usually indicates high energy consumption. When buying a new refrigerator in a store, the easiest way to find out the number of watts consumed per month is to ask the seller.
The required energy consumption for the operation of almost any household appliance is determined mainly by the energy class to which it belongs. Therefore, if there is an old and noisy unit at home, then you should not be surprised at the large electricity bills, since most likely it belongs to one of the last classes and consumes a huge amount of kilowatts every hour.
It is important to understand that it is impossible to save on the operation of the refrigerator, because it usually stores products that become unusable in a day, and sometimes an hour of being in conditions with improper temperature is enough. The only way out is to buy a new refrigerator that does not require a lot of watts, which, however, will pay off pretty quickly.
How much electricity does a refrigerator consume in kW per year?
It is quite simple to determine how much electricity a refrigerator consumes per hour, per day or month, just look at its technical characteristics, which should be indicated in the instruction manual. The level of electricity consumption of modern refrigerators presented on the domestic market ranges from 220 kW to 460 kW per year. Let’s say that your refrigerator consumes 460 kW per year, respectively, to find out how much the refrigerator consumes kW per day, you need to divide the indicated figures by 365 days and get the initial data. You will get -1.26 kW per day, approximately 38 kW or 50 W per hour (0.05 kW per hour) per month.
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However, these figures are very strongly averaged. Since in fact there are also indirect factors that can significantly affect the number of kilowatts consumed by the refrigerator per hour.
Indirect factors affecting the level of energy consumption
- The temperature of the air in the room — everything is simple here, the higher the temperature of the air surrounding the refrigerator, the more it consumes watts per hour to maintain the optimum temperature inside;
- The quality of sealing materials and their design, as well as the material from which the refrigerator is made and even its color can affect the amount of kW required each month;
- The frequency of use of the refrigerator or, more simply, the frequency of opening and closing the doors can also affect the energy consumed. If you open the doors every hour, then the unit will consume an increased amount of kW to restore the optimum temperature;
- Various additional functions, such as dispensing ice or highlighting individual elements of the unit, increase the number of watts required by the refrigerator. Usually these features remain unclaimed, but you still have to pay for them every month.
Finally, it should only be noted that household appliances, which have the lowest energy consumption in kW per day, in addition to benefiting the wallet of their owner, also have a positive effect on the environmental situation on the planet.