A control method causes a computer of an information apparatus to: display a display screen representing a floor plan on a display; display on the display screen device icons, the device icons including a dehumidifier icon; when selection of the dehumidifier icon is sensed, display on the display an operation screen for operating a dehumidifier corresponding to the dehumidifier icon, the operation screen being displayed on the display screen and outside of a region corresponding to a room where the selection of the dehumidifier icon is sensed; output a control command for operating the dehumidifier to a network based on an operation on the operation screen; and display an operation state of the dehumidifier in the region corresponding to the room where the selection of the dehumidifier icon is sensed based on the operation on the operation screen.