We Creative Enterprise mfg & Supplier of Powered & Electric Roof Exhaust Fans in Gujarat Powered exhaust fans utilize electric motors to actively exhaust high volumes of air. These are ideal for commercial kitchens, large industrial facilities, and severe heat environments. Powered roof ventilators operate by creating a mechanical negative pressure zone directly beneath the roof structure. Because hot air, fumes, and steam naturally rise toward the ceiling (thermal buoyancy), the motor-driven fan blades force this trapped thermal layer outdoors at high volumetric airflow rates.