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In almost all cases, when buying a refrigerator, climate class is not taken into account.Indeed, the world of electro-domestic appliances is not as attractive as that of technological products. As a result, if a basic study is not done prior to purchasing an appliance, refrigerators are often chosen without the consumer knowing certain pieces of) information that can make all the difference in the product.
 
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How refrigerator performance varies according to climate class ratings.
In almost all cases, when buying a refrigerator, climate class is not taken into account.

Indeed, the world of electro-domestic appliances is not as attractive as that of technological products. As a result, if a basic study is not done prior to purchasing an appliance, refrigerators are often chosen without the consumer knowing certain pieces of) information that can make all the difference in the product.

According to a number of technical factors, which relate to how the refrigerator has been built and designed, refrigerators have different climate class ratings.

These climate classes guarantee the appliance’s perfect operation, understood as a regular cooling capacity as the temperature changes in the environment in which the refrigerator is located. Essentially, there are four climate classes, although they can be combined with each other giving rise to a widened range of classifications.

The climate classes (the letter symbol for climate classes) can be found in the technical data or specifications located on the data label stuck inside the refrigerator, usually at the top or bottom, and sometimes in the fridge’s fruit tray, or even in the manufacturer’s catalogue. The classes are identified by the following symbols: (the following temperatures are based on the temperature range in which the appliance can operate at room temperature).

Climate Class

Minimum Temp

Maximum Temp

SN

10 Deg C

32 Deg C

N

16 Deg C

32 Deg C

ST

18 Deg C

38 Deg C

T

18 Deg C

43 Deg C

In some models of refrigerators the following classifications are also available:
SN / ST = running at room temperature from 10 ° C to 38 ° C
SN / T = operation at room temperature from 10 ° C to 43 ° C.

Considering that a domestic environment normally has a temperature which is around 16 ° C to 21 ° C whilst the environment of a wine cellar has a temperature of about 10 ° C, and that in addition to these general conditions the situation can change due to various, particular factors, it is easy to understand that choosing a climate class rating which specific to the intended environment in which the refrigerator will be used becomes very important.

Let’s take for example the idea of putting the fridge on a glass-covered terrace. This has a temperature of 10 ° C in the winter while in the summer it is around 30 ° C. In these circumstances the climate class SN may suffice but not the class N. Following this example, you can easily identify the various conditions that may occur in the environment in which you want to put the fridge and so rely on a responsible choice.

There are two major drawbacks of choosing an inappropriate climate class:  the first is that the refrigerator will have a higher energy consumption than necessary, since it will have trouble reaching the right temperature and thus will remain running for longer. Consequently, stress will be placed on the motor and more energy consumed. The second is that the refrigerator will be unable to sufficiently cool the food inside of it, which will also generate a greater amount of water in the refrigerator from defrosting and more ice in the freezer.
The consequence of both of these previous two disadvantages is that the life span of the product will decrease, since the appliance, having been put under stress, will wear faster.
For particularly cold areas, and thus in which the temperature is below 10 ° C, and even closer to 0 ° C, fridges which operate according to the standard climate classes have difficulty functioning. This is because they have to work in the contrary sense, by this we mean that if there are 0 ° C outside and in the refrigerator the temperature should be 6 ° C, the refrigerator will have to bring hot air inside the refrigerator cold store, but it is not designed to do so. In addition at such cold temperatures the refrigerant gas can freeze on the evaporator causing the fridge to block. For environments with such conditions, there are specific refrigerators available on the market.

 
 
Published: Tuesday, September 11, 2012
 
Agathe da Wuppertal giorno 10/04/2013
I didn't know this thing of the climate class... what it happens if the refrigerator is installed in an environment as the wine cellar where the temperature is very cold?
 
 
 
Good Morning Agathe, if the refrigerator is installed in a wine cellar or in a place where there is a temperature very cold, it can stop, because the refrigerant gas, which is very cold can to freeze, preventing so the operation correctly of refrigerator. For this ambients, there are specific refrigerators, as those of a american factory, its name is: Gladiator Garageworks.
 
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