The main difference between attic fans and whole house fans is their working. An attic fan is used to remove hot air from the attic to the outside whereas a whole house fan is used to move cool air...
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What is a whole house fan? Whole house fans are exhaust fans that connect the living areas of a house to the attic. They are installed by cutting a hole on the ceiling, and they move hot air from...
Attic fan size calculation Attic fan size (CFM) = 0.7 x Sq.ft area of the attic (Formula 1) The size of an attic fan is calculated in terms of CFM. CFM (Cubic Feet per Minute) is a measure of the...