If the refrigerator is used in continuous operation, to make it easy not to maintain the temperature. The "recirculation refrigerator" has no second back wall, through which the air can circulate, but simply a PC fan in the upper left corner. If the lowest temperature 2 ° C and supercool adjusting, he cools down after a week unopened only to a maximum of 4 ° C. The two compartments are down when they are warm once, only for eternal time again cold. Well suited for infrequent users, bad for long-term use.