The fundamental capacity of the Air Handling Unit is take in outside air, condition it and supply natural air to a structure. All fumes air is released, which verifies an adequate indoor air quality. Contingent upon the required temperature of the adapted air, the natural air is either warmed by a recuperation unit or warming curl, or cooled by a cooling loop.

In structures, where the clean prerequisites for air quality are lower, a portion of the air from the rooms can be re-circled by a blending chamber, and result in huge vitality investment funds. A blending chamber has dampers for controlling the proportion between the arrival, outside, and fumes air.