Today, also ventilation technology on the large scale needs to fulfill very special requirements. Zehnder’s ComfoAir XL system is highly efficient and easy to maintain and integrate into control systems thanks to clever sensor technology. This does not only enable a manual or time-controlled operation, but in addition the air can be exactly controlled and cleaned based on sensor data with minimal energy only. The modular building of the system makes it suitable for new installations as well as for retrofitting.