These are small, but the central functioning unit of any AC and recently adopted units in many office layouts these days. The main job of this AHU is to collect external air, remove dust agents, and distributes air to the internal areas. Such a critical part faces problems mostly in the fans, blowers, humidifiers, heating elements, cooling, and more. If you are suffering from such problems, feel free to contact Cool zones experts to investigate and fix the problem immediately.