Air Handling Unit (AHU) Components:
1) Weather louver: To prevent insects, leaves, dirt and rain from entering
2) Flow rate controller: Automated adjustment of volume of air
3) Control damper: Fixed adjustment of volume of air
4) Heating unit: To heat the air to the proper temperature
5) Cooling unit/dehumidifier: To cool the air to the required temperature or to remove moisture from the air
6) Humidifier: To bring the air to the proper humidity, if too low
7) Filters: To eliminate particles of pre-determined dimensions and micro-organism
8) Ducts: To transport the air

Air Handling Unit (AHU) Characteristics:
An Air Handling Unit (AHU) is used to re-condition and circulate air as part of a heating, ventilating and air-conditioning system. The basic function of the AHU is to take in outside air, re-condition it and supply it as fresh air to a building.