MRCOOL VersaPro Series

An air handling unit (AHU) is a large metal box that connects to the ductwork of a building. AHUs are best for filtering and circulating indoor air in a building. Air handling units are normally found on roofs. The unit typically has components that consist of:

• Air filters: Trap dust particles and debris that is in the air. It can also remove pollen, bacteria, and other allergens.
• Blowers: Fan that pushes air through the ductwork into rooms and other spaces.
• Housing: Insulated enclosure of the AHU.
• Cooling Coil: Cools and dehumidifies the air. Can be either a cold water or refrigerant cooling coil.
• Heating Coil: Heats the air in the AHU. Can either be a hot water or refrigerant heating coil.
• Dampers: Regulates the air that enters and leaves the AHU.
• Condensate Drain: Collects water that drips from the cooling coil and then moves the water out of the house.

Condensers work by pumping hot refrigerant gas and cooling it by using fans that remove heat. Once the refrigerant cools, the condenser converts the refrigerant into a liquid form and sends its liquid form to the indoor unit. This process repeats during operation, ensuring that cooled air continues to move to indoor areas.