All refrigerators/freezers are designed to operate within a specific climate class. Install it in a location where the ambient temperature corresponds to the product’s climate class, as stated on the rating plate.

When operated outside the temperature range specified by the climate class, the product may not be able to maintain the desired temperatures or function fully.

 

 

Climate classes for household refrigerators/freezers

Climate class	Room temperature
N	from +16°C to +32°C
N-ST	from +16°C to +38°C
N-T	from +16°C to +43°C
SN	from +10°C to +32°C
SN-ST	from +10°C to +38°C
SN-T	from +10°C to +43°C
ST	from +16°C to +38°C
T	from +18°C to +43°C

 

Climate classes for commercial refrigeration/freezing equipment

Commercial refrigeration/freezing equipment has its own climate classes, which differ from those used for household refrigerators/freezers. The climate class indicates the maximum ambient temperature and humidity under which the product is designed to operate.

 

Class	Temperature	Humidity	Typical application
0	20°C	50% RH	Air-conditioned rooms
1	16°C	80% RH	Cool rooms
2	22°C	65% RH	Moderate environments
3	25°C	60% RH	Standard retail environment
4	30°C	55% RH	Warm shops/kitchens
5	40°C	40% RH	Very hot environments
6	27°C	70% RH	Humid environments
7	35°C	75% RH	Very hot/humid environments
8	24°C	55% RH	Special class

CC class	Temperature	Humidity	Typical environment
CC1	25°C	60% RH	Normal retail store
CC2	32.2°C	65% RH	Warm retail store
CC3	40.6°C	75% RH	Extreme heat/humidity

Temperature class	Product temperature
M0	≤ 4°C
M1	-1°C to +5°C
M2	-1°C to +7°C
H1	≤ 10°C
K1	≤ 3.5°C
K2	≤ 2.5°C
K3	≤ -1°C
K4	≤ 5°C
L1	-15°C to -18°C
L2	-12°C to -18°C
L3	-12°C to -15°C

The temperature class indicates how cold the product keeps the goods.

 

 

Relationship between old and new classes

Climate class	Closest CC class	Comment
Class 3	CC1	Very close to the same test environment
Class 4	Partly CC2	CC2 is more demanding due to higher humidity
Class 5	Partly CC3	CC3 is significantly more demanding
Class 7	Approaches CC3	High humidity

The standards are different, the test methods are different, and humidity plays a larger role in the CC system.

 

Class systems explained

Class 3/4/5	Older and general commercial standards
CC1/CC2/CC3	New display and beverage cooler standards
M1/K2/L1 etc.	The product’s internal temperature class