The amount of time it takes for a refrigerator or freezer to lose all its coolness when the door is left open slightly can vary depending on several factors, including the ambient room temperature, the size and efficiency of the appliance, and the frequency of the door being opened.
In general, if the door is only left slightly open, the cool air inside the refrigerator or freezer will escape at a slower rate compared to if the door is fully open. However, even a small opening can lead to temperature fluctuations inside the appliance, which can impact food safety and energy consumption.
If you leave the refrigerator or freezer door slightly open, it may take several hours (2-6 hours) for the appliance to lose enough coolness to affect the stored items significantly. But again, this can vary, and it's essential to be mindful of the situation to avoid any potential food spoilage or wastage.
To maintain the efficiency and proper functioning of your refrigerator or freezer, it's crucial to close the door tightly and avoid leaving it open longer than necessary. Additionally, regularly cleaning and checking the door gaskets for a tight seal can help prevent cool air leaks and keep your appliance running optimally.