To prevent air recirculation in a swimming pool area, what is the maximum relative humidity permitted?

The maximum relative humidity permitted in a swimming pool area is critical for maintaining comfort and preventing air recirculation and condensation issues. A relative humidity level of 60% is widely accepted as the upper limit in such environments. This threshold helps ensure proper evaporation from the pool while minimizing moisture in the air that could lead to structural damage, mold growth, and discomfort for users.

Keeping the relative humidity at or below 60% allows for adequate air circulation and ventilation, which is essential for maintaining air quality and preventing the growth of bacteria or other pathogens. Higher humidity levels can lead to excessive moisture in the air, which can condense on surfaces, creating an environment that is not only unpleasant but also potentially harmful to both the facility and the health of the swimmers.

Maintaining this standard aligns with best practices in HVAC design for swimming pool areas, helping to create a safe and pleasant environment for users.