At what height should A/C discharge ducts be located within a cabin?

The appropriate height for A/C discharge ducts in a cabin is typically at waist height or higher. This positioning is crucial for several reasons.

First, it allows the cooled air to efficiently circulate throughout the cabin. If the ducts are too low, the cool air may not mix well with the warmer air, leading to ineffective cooling and discomfort for occupants. Discharge at waist height ensures that the cool air can rise and distribute evenly in the space.

Additionally, locating ducts at waist height or higher helps in preventing obstruction by furniture or passengers, which can occur if the ducts are placed at foot level. This enhances the system's efficiency and ensures occupants receive the intended comfort level.

This height also considers human ergonomics, making it convenient for airflow without direct blast on individuals, which can be uncomfortable. Ensuring the ducts are positioned correctly at waist height or above promotes an optimal atmosphere within the cabin, significantly enhancing the overall effectiveness of the air conditioning system.