An air conditioning system configured to exchange heat, in order to condition air of one indoor air-conditioning-target space, with air of a common space disposed indoors around the air-conditioning-target space and not being a target of the air conditioning, the air conditioning system comprising a plurality of air conditioners (21 to 29) each including: a service-side heat exchanger configured to exchange heat between air of the air-conditioning-target space and refrigerant; a heat-source-side heat exchanger configured to exchange heat between the air of the common space and the refrigerant; and a compressor (41 to 49) configured to compress the refrigerant circulating through the service-side heat exchanger and the heat-source-side heat exchanger, wherein the air conditioning system is arranged such that when an air conditioning capacity falls within a predetermined range for at least two of the plurality of air conditioners, part of the air conditioners whose compressors are in operation has its compressor stopped, wherein the air conditioning system is further arranged such that when the air conditioning capacity falls within the predetermined range for at least two of the plurality of air conditioners, the air conditioner whose compressor is still in operation has an operating state of the air conditioner changed so as to reduce a temperature change around the air conditioner whose compressors is still in operation, characterized in that the air conditioning system is further arranged such that when the air conditioning capacity falls within the predetermined range for at least two of the plurality of air conditioners, the air conditioner whose compressor is stopped is switched to perform a blowing operation. a plurality of air conditioners (21 to 29) each including: a service-side heat exchanger configured to exchange heat between air of the air-conditioning-target space and refrigerant; a heat-source-side heat exchanger configured to exchange heat between the air of the common space and the refrigerant; and a compressor (41 to 49) configured to compress the refrigerant circulating through the service-side heat exchanger and the heat-source-side heat exchanger, wherein the air conditioning system is arranged such that a service-side heat exchanger configured to exchange heat between air of the air-conditioning-target space and refrigerant; a heat-source-side heat exchanger configured to exchange heat between the air of the common space and the refrigerant; and a compressor (41 to 49) configured to compress the refrigerant circulating through the service-side heat exchanger and the heat-source-side heat exchanger, wherein the air conditioning system is arranged such that when an air conditioning capacity falls within a predetermined range for at least two of the plurality of air conditioners, part of the air conditioners whose compressors are in operation has its compressor stopped, wherein the air conditioning system is further arranged such that when the air conditioning capacity falls within the predetermined range for at least two of the plurality of air conditioners, the air conditioner whose compressor is still in operation has an operating state of the air conditioner changed so as to reduce a temperature change around the air conditioner whose compressors is still in operation, characterized in that the air conditioning system is further arranged such that when the air conditioning capacity falls within the predetermined range for at least two of the plurality of air conditioners, the air conditioner whose compressor is stopped is switched to perform a blowing operation.