The statement that the temperature inside a fridge is colder than the temperature inside a freezer, even when they are full of identical items, is not accurate. In reality, the temperature inside a freezer is typically colder than the temperature inside a fridge. This is because the primary purpose of a freezer is to maintain a sub-zero temperature for long-term food storage, while a fridge is designed to keep food cool but not frozen.
Here's why the temperature inside a freezer is colder than a fridge:
Temperature Range: A typical refrigerator's temperature range is around 32°F to 40°F (0°C to 4°C). It is designed to keep food at a temperature just above the freezing point of water, which helps slow down bacterial growth and keeps perishable items fresh for a short period.
Cooling Mechanism: Refrigerators use a single cooling system that cools both the refrigerator and freezer compartments. A thermostat controls the temperature, directing more cooling to the fridge section to maintain the desired temperature range.
Freezer Temperature: In contrast, the temperature inside a freezer is much lower, typically ranging from around -10°F to 0°F (-23°C to -18°C) or even lower. Freezers use a separate cooling system and are insulated more effectively to maintain sub-zero temperatures for frozen food storage.
Food Storage: Freezers are designed to preserve food by freezing it, whereas refrigerators are meant for short-term storage of items that do not require freezing.
So, in a properly functioning fridge and freezer, the freezer will indeed be colder than the fridge. If you experience the opposite, where the fridge is colder than the freezer, it might indicate a problem with the cooling system or thermostat, and you should have the appliance checked by a qualified technician.