To provide a air conditioning system particularly suited to a relatively large-sized air conditioning space where an instrument damaged by an influence of an air stream caused by rotation of a rotary press and the like is installed.

An air conditioning space 1 is divided into a non-blow-off zone (a) where an instrument 15 damaged by an influence of an air stream is installed, and a blow-off zone (b) where the instrument 15 is not installed, and a blow-of outlet 20 is disposed at the blow-off zone (b) for blowing off air conditioning air toward the interior of the blow-off zone (b) with an exhaust outlet 30 disposed at the non-blow-off zone (a).