Positioning of Exhaust Fans is an important factor in ventilation. Wrong positioning will make installation meaningless. Fans should be installed away from the air - paths or inlets as far as possible, enabling them to draw out polluted air and draw in fresh air quickly. Fans should be placed high on the wall - opposite to the air - inlets, for being polluted, the warm air starts rising. Placing them near doors or windows will cause air movement to be short circulated between the fans and adjacent inlets - keeping part of the room unventilated (see illustration above). It is preferable to use combination of small and medium sized fans than one large fan.

Fans, exposed to weather, are subject to moisture and dust - laden atmosphere-- necessitating special protective treatment. As required, EPC Exhaust Fans can be coated with epoxy paint or chlorinated rubber paint for protection against corrosive atmosphere. While working in moisture - laden atmosphere, the motor winding may absorb water causing damage to motor insulation. The Fans can provide special impregnation of motor windings, protection against ingress of water and guarantee protection against ingress of water and guarantee protection of all interior and exterior surfaces.