Combined units are particularly efficient. The cold nebulisation refreshes the sultry air, the power of the water purifies the air. Dirt and suspended items are washed, leaving air behind to feel good - as if freshly washed. Due to increasing environmental pollution, air quality is permanently decreasing - global warming requires equipment to improve our indoor air. Four functions in one unit - The unit offers both fan and humidifier functions and distributes cool, humid mist. The ion humidifier offers the following functions: refresh, clean and humidify - they can be used together or separately. The ion function generates negative ions that reduce dust particles and other airborne contaminants. The ions are also said to have a direct influence on our well-being. The air feels refreshing and clean, such as near a waterfall, after a thunderstorm or by the sea.