The air that comes out of the bottom of a fridge or freezer is commonly referred to as "condenser air" or "condenser coil air." This air is a byproduct of the refrigeration process that occurs inside the appliance.
In a refrigerator or freezer, the cooling process involves the circulation of refrigerant through a closed-loop system. The refrigerant absorbs heat from the interior of the appliance, cooling down the contents, and then releases the heat it absorbed to the external environment. This heat is expelled from the system via the condenser coils, usually located at the back or bottom of the appliance.
As the hot refrigerant flows through these coils, it transfers its heat to the surrounding air. The warmed air, now carrying the heat from the condenser coils, is released into the room or space where the fridge or freezer is located. This is why you may feel warm or slightly heated air coming from the bottom or rear of the appliance.
It's important to ensure proper ventilation around the condenser coils to allow efficient heat dissipation. Dust and debris can accumulate on the coils, hindering their ability to release heat, and potentially reducing the appliance's cooling efficiency. Regular cleaning and maintenance can help optimize the performance of your fridge or freezer.