A fan device includes a fan motor and a board storage unit for storing plural circuit boards. The fan motor includes an impeller rotating around a central axis and a wall surface surrounding the impeller outward in a radial direction. The board storage unit is disposed outward from the wall surface in the radial direction. The circuit boards include first and second circuit boards. As viewed from an opposing direction of the first and second circuit boards, the first circuit board has a first opposing area overlapping the second circuit board and a first non-opposing area which does not overlap the second circuit board, and the second circuit board has a second opposing area overlapping the first circuit board and a second non-opposing area which does not overlap the first circuit board. An electronic component or a lead wire is disposed in each of the first and second non-opposing areas.