A hand dryer apparatus includes a high-pressure airflow generator that generates a high pressure airflow, a control circuit that controls the high-pressure airflow generator, a power connecting unit that connects a commercial power source to the control circuit, a main body that forms a hull by housing the high-pressure airflow generator, the control circuit, and the power connecting unit, and nozzles that are formed in the main body and blows out the high pressure airflow created by the high-pressure airflow generator; further includes a panel composing a part of the main body and is detachable by a tool, and switching units that are housed in the main body and can switch a setting of the hand dryer apparatus, and enables access to the power connecting unit and the switching unit by removing the panel.