The new EDC18HE and EDC24HE fans belong to the new generation of high energy efficient, very robust and reliable air blower fan range, suitable for an extensive variety of professional applications in order to create the optimal indoor climate. The new design of the EDC18HE and EDC24HE air blowers consist of a unique round shaped housing composed of the air conveyor (Venturi) and a discharge cone on the outlet side. Inside the round shape housing, the 3-blade propeller is attached directly to the electrical motor, which is fixed on to the airflow rectifiers. This unique design renders the EDC18HE and EDC24HE as the ideal air blowers which can deliver high airflow capacity with low power consumption. The EDC18HE and EDC24HE have been designed, tested and developed in Munters R&D laboratory, while the performances were confirmed by tests performed in Munters Fan Test Chamber - designed and built according to the ANSI AMCA 201-85 specifications.