Transforming cabin comfort with optimal humidity
Traditional VIP aircraft cabins often suffer from extremely low humidity—sometimes below 5%—which can cause dehydration, fatigue, dry skin, and discomfort for passengers. The ACJ320’s enhanced inflight humidification system from CTT Systems solves this problem by raising cabin humidity to a comfortable 20–23% relative humidity (RH), creating an oasis of well-being at 41,000 feet.
Airbus is leading the private jet industry by offering the ACJ enhanced Inflight Humidification system as part of the comfort climate on ACJ family aircraft. The cabin climate onboard is crucial for the VIP experience, and without a humidification system, the air is far too dry for optimal comfort and well-being.
Peter Landquist, Vice President Senior Advisor Sales of CTT Systems
The benefits of enhanced humidification
With the ACJ320’s improved humidity levels, VIP passengers enjoy:
Reduced fatigue and jet lag
Healthier skin and eyes
Better sleep and overall well-being
Lower risk of airborne illness
A more pleasant and luxurious in-flight experience
By maintaining optimal humidity, the system also helps protect passengers’ immune systems and minimizes common dry air issues such as red eyes and sore throats.
Advanced technology for a healthier cabin
The ACJ enhanced inflight humidification system uses evaporative cooling technology, which efficiently adds moisture to the air while preventing the transfer of bacteria and reducing airborne particles. To ensure cabin safety, the system is paired with CTT’s anti-fuselage-condensation technology, preventing moisture build-up and protecting the aircraft’s structure.
Introducing the window anti-frost feature
Three of the four system kits in this order feature an optional anti-frost window capability. The benefits are significant for passengers – frost-free windows offer an unobstructed panoramic view of the skies, enhancing a more enjoyable and comforting travel experience. This technology removes the common annoyance of dealing with fogged or frosted windows, improving the overall cabin atmosphere.
Setting a new standard in VIP aviation
Airbus Corporate Jets and CTT Systems have partnered to make this advanced humidification solution available for the ACJ320 Family, including new ACJ320neo aircraft. This innovation sets a new benchmark for comfort and health in private aviation, making the ACJ320 the preferred choice for discerning travelers seeking the ultimate in luxury and well-being.
Welcome onboard ACJ320 with CTT Systems Humidifier Onboard
– for true in-flight VIP travel, well-being and health
What to do next
➔ ACJ is setting a new standard for private jets with Humidifier Onboard
➔ The importance of humidity for human health
➔ White paper: Importance of aircraft cabin humidity – from a scientific point of view
➔ Our product Humidifier Onboard VIP and Business Jet
➔ Contact us for more information about optimizing humidity in your aircraft

