Air-conditioning system

An air-conditioning system comprising:

• an air-conditioning apparatus that includes a refrigerant circuit in which an indoor unit and an outdoor unit are connected to each other by a refrigerant pipe and inflammable refrigerant flows in the refrigerant pipe, and is configured to supply conditioned air to a plurality of areas corresponding to air-conditioned space;
• an air-conditioning duct that connects the indoor unit to the plurality of respective areas;
• a plurality of dampers that are arranged in the air-conditioning duct and openable and closable to interrupt or pass the conditioned air supplied to the plurality of respective areas;
• and
• a controller configured to control the dampers, wherein
• the controller controls the dampers such that a total floor area of the areas to which the conditioned air is supplied is set as an area equal to or larger than a minimum floor area corresponding to a floor area with which an inflammable region is not formed even when the inflammable refrigerant is leaked, and
• wherein
• the controller compares the total floor area with the minimum floor area, and opens the dampers that are closed in a case where the total floor area is below the minimum floor area.