AIR HANDLING UNIT
The air handling unit is an integrated piece of equipment
consisting of fans, heating and cooling coils, air-control
dampers, filters and silencers. Air Handling Units are often
called AHU.The purpose of this equipment is to collect and
mix outdoor air with that returning from the building space.
The air mixture is then cooled or heated, after which it
is discharged into the building space through a duct system
made up of five-feet diameter pipes.Air Handler is normally
associated with heating/cooling (HVAC) systems in commercial
buildings. These are normally very large systems moving
2000 CFM to 10,000 CFM and higher. They may be mounted on
the top of the roof or in large mechanical rooms located
in the building. They often have an economizer or inlet
damper that allows for a small amount of outside air or
make-up air to be pulled in through the air handler.