[villagetinker]

Originally Posted by capecoralbill

I thought attic air is supposed to exit thru the ridge vents, with fresh air being drawn from the soffits. Does adding an electric fan change the intended direction of air flow?

When the fan is on, I am sure that I am moving a lot more air then the soffit/ridge vents and roof vents normally handle, so yes the flow on the soffit flow reverses, all other flows are the same but at a higher rate (higher heat removal).