Why should doors not be propped open or fanned?

Doors should not be propped open or fanned primarily because doing so leads to a significant rise in temperatures. This is particularly critical in environments such as food storage areas, freezers, and refrigerators, where maintaining a consistent and safe temperature is essential for preserving the quality and safety of the stored items. When doors are left open, the cold air escapes, and warm air enters, creating an environment that can compromise the integrity of perishable goods.

Additionally, allowing doors to remain open disrupts the regulated climate that these spaces are designed to maintain. This can lead not only to spoilage of food but also to potential foodborne illnesses due to the growth of harmful bacteria in warmer temperatures. Thus, keeping doors securely closed is a fundamental practice in maintaining safety and quality in food storage environments.