What is the function of a dehumidification system in an indoor aquatic facility?

In an indoor aquatic facility, the primary function of a dehumidification system is to control humidity levels and prevent mold and mildew growth. High humidity levels can lead to excessive moisture in the air, which creates an environment conducive to mold and mildew proliferation. Such growth can pose health risks and damage the facility's structure and equipment.

By effectively managing humidity, a dehumidification system enhances air quality, contributes to a more comfortable atmosphere for users, and helps maintain the integrity of the facility. It does this by extracting moisture from the air, thus reducing the humidity to a level that is safe and comfortable for both occupants and the facility itself.

The other options, while relevant to different aspects of an aquatic facility, do not encapsulate the primary role of a dehumidification system. It does not primarily provide heating, increase water temperature, or filter and purify pool water, as those functions are typically handled by different systems designed for those specific purposes.