Power Fans
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      What is the power fan's CFM if all we know is the attic square footage the fan can service?

      Anyone can calculate the estimated CFM (cubic feet of air moved per minute) of a power fan by using the industry-accepted formula for determining CFM of any brand of fan.

      Anyone can calculate the estimated CFM (cubic feet of air moved per minute) of a power fan by using the industry-accepted formula for determining CFM of any brand of fan: attic square footage  the fan services x 0.7 = CFM of the fan.