What is an automatic pool cleaner?

An automatic pool cleaner is a device designed specifically to clean the pool's surfaces, including the floor and walls, with minimal or no manual labor required. These cleaners utilize various methods, such as suction, pressure, or robotic technology, to navigate the pool and remove debris like leaves, dirt, and other contaminants. This automation significantly reduces the time and effort needed for pool maintenance, allowing pool owners to enjoy their pool without having to spend excessive time on cleaning tasks.

The other options refer to different pool functions that are essential for overall maintenance but do not specifically involve the cleaning aspect. For example, devices that heat pool water focus on temperature regulation rather than cleaning. Similarly, devices that monitor chemical levels are crucial for maintaining safe water conditions but are unrelated to the physical cleaning of the pool surfaces. Lastly, while maintaining water circulation is vital for water quality and distribution, it also does not pertain directly to the cleaning function of an automatic pool cleaner. Thus, option C accurately describes the purpose and function of an automatic pool cleaner.