SMART-EC fans have been developed for general ventilation of buildings and are meant for forwarding the dry air of maximum temperature +60°C and dustiness not exceeding 0,3 g/m3, without viscous, aggressive impurities or substances that could cause explosion hazard. The SMART-EC family of fans, as a series of four sizes of motor rates, ranging from 0,275 kW up to 1 kW and maximum volume flow 6200 m3/h. The appliances meet the requirements of the ErP 2009/125/EC Directive. SMART-EC fans are equipped with high-tech electronic commutator motors EC. Their advantage is easy and full range step-less speed adjustment along with high work efficiency.