PROBLEM TO BE SOLVED: To provide an air-conditioning system capable of cultivating crop plants in good condition while suppressing occurrence of variation in environment between crop plants, and saving energy.SOLUTION: An air-conditioning system 1 is an air-conditioning system 1 that is arranged in a protected horticulture space in which elevated frames 103 for crop plants 101 are installed, and comprises: a first duct 10 through which gas flows； a second duct 20 through which gas flows in an opposite direction to the first duct 10； and shielding sheet 31,32 which form a shielded space S2 covering the crop plant 101, the first duct 10 and the second duct 20 in the protected horticulture space, in which the first duct 10 and the second duct 20 are arranged so as to oppose to each other sandwiching the elevated frame 103 or the crop plants 101, and supply gas to the shielded space S2.SELECTED DRAWING: Figure 5【課題】作物間で環境にばらつきが生じるのを抑えながら作物を良好に栽培することができるとともに、省エネルギー化を図ることができる空調システムを提供する。【解決手段】空調システム１は、作物１０１用の高設架台１０３が設置された施設園芸空間に配置される空調システム１であって、気体が流れる第１のダクト１０と、この第１のダクト１０とは反対方向に気体が流れる第２のダクト２０と、施設園芸空間内に、作物１０１、第１のダクト１０、及び第２のダクト２０を覆う遮蔽空間Ｓ２を形成する遮蔽シート３１，３２と、を備え、第１のダクト１０及び第２のダクト２０は、高設架台１０３又は作物１０１を挟んで互いに対向するように配置され、遮蔽空間Ｓ２に気体を供給する。【選択図】図５
