Provided is a range hood including a first case including a first inlet formed on a lower surface and a damper formed on an upper surface, a second case arranged over the first case to form a space in which a fan module is arranged, and including a second inlet formed on a side surface, a first sensor arranged in the second case and configured to detect a contaminant, a second sensor arranged above the first sensor and configured to detect a contaminant, and a controller configured to control an output level of the fan module and an opening or closing of the damper based on concentration data of the contaminants obtained from the first sensor and the second sensor.