Question

Why are freezers placed on top of refrigerators?

Answer 1

• In a refrigerator, the freezer at the top of the unit contains the evaporator, which cools the air.
• Cold air is denser than warmer air, so it sinks to the bottom of the freezer.
• There the cold air flows through vents (usually inside the meat keeper) into the refrigerator cabinet where it sinks to the bottom of the fridge (the crisper).
• Air warmed by the contents of the fridge rises as the cold air displaces it, and the 'warm' (only a few degrees difference) air enters the freezer compartment where the cycle begins again.
• Hence, the freezer in a refrigerator is fitted near the top so that it can cool the whole interior by setting up convection currents.