Some air conditioners may purify the air slightly, especially if they’re equipped with certain air filters like HEPA. However, this isn’t among the primary features of a central air conditioner, as its main job is cooling the air indoors. So, if air purification (along with air conditioning) is on your mind, it’s better to go for good-quality air purifiers.
However, it’s important to clean the filters to prevent dirt and debris from accumulating and spreading all across the room.