PROBLEM TO BE SOLVED: To suppress environmental deterioration in an indoor space, in an air conditioning system for performing indoor air conditioning.SOLUTION: An air conditioning system includes a ventilation device 4 and a deodorization device 12 arranged indoors. The ventilation device 4 and the deodorization device 12 are operated in an interlocked manner. At the same time as a ventilation operation for the ventilation device 4 ventilating and blowing air to the outdoors during cooking time ends, at least the deodorization device 12 performs a deodorization operation by circulation air blowing to the indoors. As for odor which was not ventilated in the ventilation operation for the ventilation device ventilating and blowing air to the outdoors during cooking time, at the same time as the ventilation operation ends, a deodorization operation is performed by the deodorization device, so that environmental deterioration in the indoor space can be suppressed.【課題】室内の空調を行う空調システムにおいて、室内の空間の環境悪化を抑制することを目的とする。【解決手段】室内に配置される換気装置4と脱臭装置12とを備え、換気装置4と脱臭装置12とは連動運転する構成とし、調理時に換気装置4が屋外へ換気送風する換気運転終了と同時に、少なくとも脱臭装置12は、室内への循環送風による脱臭運転を行うことを特徴とし、調理時に換気装置が屋外へ換気送風する換気運転で換気できなかった臭気を、換気運転終了と同時に、脱臭装置によって、脱臭運転を行い、室内の空間の環境悪化を抑制することができる。【選択図】図1