Covering the interior of your mini fridge with aluminum foil is not likely to significantly improve its cooling performance or lower the temperature. Aluminum foil is a reflective material, and while it can help with heat radiation, it is not designed to be an insulator or a refrigeration aid.
The primary purpose of aluminum foil in a fridge or freezer is to wrap and protect food items, not to modify the cooling capabilities of the appliance. The cooling performance of a fridge depends on its internal components, insulation, and refrigeration system, which are designed to maintain a specific temperature range.
If your mini fridge is struggling to reach and maintain the desired temperature, there could be several reasons for this issue:
Overloading: When a fridge is too full, air circulation is restricted, and the cooling system may have difficulty maintaining lower temperatures.
Location: The ambient temperature and the location of the mini fridge (e.g., near a heat source or in direct sunlight) can affect its cooling efficiency.
Poor ventilation: Ensure that the fridge's ventilation grilles and coils are clean and unblocked to allow proper heat dissipation.
Thermostat calibration: The thermostat might not be accurately calibrated, leading to inaccurate temperature readings.
Door seal: Check if the door seal is intact and not allowing warm air to enter the fridge.
If your mini fridge consistently struggles to maintain the desired temperature, and you've ensured it's not due to any of the reasons mentioned above, it might be a good idea to contact the manufacturer's customer support or consult with a professional appliance repair technician. They can help diagnose the issue and suggest appropriate solutions to improve the cooling performance of your mini fridge.