Portable extraction sets are used in many configurations. They are designed for the air-supply applications or extraction ventilation of the rooms and workplaces. They can be used as local exhausts, machine cooling systems. Additionally, they are efficient in aeration (air supply) of the process halls and storehouses. PZW sets can be applied for drying the humid rooms, by forcing the multiple air exchanges. The fans meet the requirements of ErP 2009/125/EC Directive.