Abstract: A temperature setting device includes: a contour map display processing unit to display a contour map representing a temperature distribution in a room where an air conditioner is installed on a screen in accordance with display data of the contour map; a coordinates acquiring unit to acquire, when contact with the contour map displayed on the screen is detected, position coordinates indicating a position of the contact on the contour map as position coordinates indicating a point at which a set temperature is to be changed; and a control signal outputting unit to output, to a control device of the air conditioner, a first control signal giving an instruction to lower the set temperature at the point or a second control signal giving an instruction to raise the set temperature at the point, the point being indicated by the position coordinates acquired by the coordinates acquiring unit.