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A rooftop exhaust fan that moves the required CFM only while consuming full motor power can become an expensive 24/7 operating decision. In the Edmonds Hybrid Ventilation vs Conventional Power Rooftop Ventilation comparison, the right choice depends on more than fan diameter or nameplate airflow. Building height, wind exposure, duty cycle, make-up air, static pressure, and the cost of electrical operation all matter. How conventional powered rooftop ventilation works A conventional powered rooft …