Only Twin Cooling Plus creates a favourable environment for preserving fresh food in the fridge with 70% humidity, compared to 30% in a conventional Frost Free Refrigerator. So it keeps ingredients fresh for longer without drying out. Deliciously tasty, odor free frozen food The Twin Cooling Plus system cools the compartments separately to stop unexpected odors spreading from fridge to freezer. So frozen food retains more of its original flavor.