Blower Motor
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The blower motor pulls air from the air inlet and forces it into the plenum assembly where it is mixed and distributed. The blower motor has 4 speeds and is controlled by the blower motor switch and resistor.