Height Difference Setting System

Provided is a system for setting height differences that can set the carrying capacity for a refrigerant to an appropriate state. A system for setting height differences (1) is configured from a plurality of constituent elements and, by information being transmitted between the constituent elements, sets the height difference of an outdoor unit (8) and an indoor unit (9) constituting an air conditioner (7) installed in a building (6). The system for setting height differences (1) has constituent elements that function as an outdoor unit height information acquiring unit (2), an indoor unit height information acquiring unit (3), a height difference setting unit (4), and a carrying capacity adjusting unit (5). The outdoor unit height information acquiring unit (2) and the indoor unit height information acquiring unit (3) respectively acquire outdoor unit height information indicating the height of the installation location of the outdoor unit (8) and indoor unit height information indicating the height of the installation location of the indoor unit (9). The height difference setting unit (4) sets the height difference of the outdoor unit and the indoor unit on the basis of the outdoor unit height information and the indoor unit height information. The carrying capacity adjusting unit (5) adjusts the carrying capacity of the refrigerant to be carried from the outdoor unit to the indoor unit on the basis of the height difference set by the height difference setting unit (4).