In 2015 LUNOS will launch a completely new ventilation unit in the form of Nexxt: Nexxt is a decentralized heat recovery system that combines the benefits of decentralized and centralized control systems and is also the most silent unit of its kind. It enables control of ventilation in several rooms via just one unit. Nexxt achieves heat recovery efficiency of up to 90%. Heat transfer is made via a cross-flow heat exchanger or optionally via a cross-counterflow heat exchanger. Power input commences as of 5 Watts and volume flows of over 90 m³/h can be generated. Nexxt is rounded off by a completely new operating concept. Piezo elements are located behind an elegant metal facing which ensures that clear but silent feedback is provided on actuation by means of vibration and sound. Nexxt is controlled via humidity or temperature sensors as a standard, and optionally also via a CO2 sensor. It is installed directly into the outside wall: a surface and flush version are available. The popular, well-proven 160’ tube is used for connection to the outside.