The ventilation system distributes low-pressure air throughout the cabin, flight deck, and various aircraft bays. The core components of the system include fixed or variable frequency electric fans. System applications include cabin air recirculation, avionics cooling, lavatory/galley ventilation, vacuum waste blowing, galley chilling, cargo heating and air particle separation.

Key technologies in modern ventilation systems include highly reliable, efficient and quiet fans.  In addition, advanced motor drives can vary and therefore optimize flow rates throughout the flight envelope.

The systems enhance the flight experience by providing fresh air, improving food safety and cooling flight essential and flight critical electronics.