An air conditioning apparatus comprising: a plurality of heat source apparatuses (10A,10B) having a heat source apparatus side heat exchanger (13A,13B) and a compressor (11A,11B), one or plurality of indoor units (20a,20b,20c) having a flow rate control device (22a,22b,22c) and an indoor unit side heat exchanger (21a,21b,21c). at least two main pipes (100,200), a first main pipe and a second main pipe, pipe-connecting between said plurality of heat source apparatuses (10A,10B) and one or plurality of indoor units (20a,20b,20c), a tubular distributor having one inlet and a plurality of outlets and branching a refrigerant flowing from said first main pipe into the inlet into the plurality of outlets to distribute into said plurality of heat source apparatuses (10A,10B), and connection piping (500A,500B) connecting said plurality of heat source apparatuses (10A,10B) and said plurality of outlets of said distributor respectively, characterized in that said distributor is fixedly disposed against one heat source apparatus among said plurality of heat source apparatuses (10A, 10B) such that the mounting position including the orientation of said distributor is fixed against said one heat source apparatus, wherein the inlet of said distributor is disposed facing perpendicularly downward; the outlets of said distributor are disposed facing perpendicularly upward; the outlets of said distributor are disposed at the same location against the ground; wherein said connection piping (500A, 500B) connecting each of the plurality of heat source apparatuses (10A, 10B) and said distributor has a configuration such that a reverse U-shaped bending part (501A, 501B), which is respectively one end part of said connecting piping (500A, 500B) and respectively connected with said plurality of outlets of said distributor, is formed at an upper location than the inlet position of said distributor; wherein a U-shaped bending part is provided at the other end of said connection piping, wherein the connection piping connects said one heat source apparatus and said distributor, and the U-shaped bending part is connected so that it is made to be a lower side than a connection part with a first manual opening and closing valve in said one heat source apparatus. a plurality of heat source apparatuses (10A,10B) having a heat source apparatus side heat exchanger (13A,13B) and a compressor (11A,11B), one or plurality of indoor units (20a,20b,20c) having a flow rate control device (22a,22b,22c) and an indoor unit side heat exchanger (21a,21b,21c). at least two main pipes (100,200), a first main pipe and a second main pipe, pipe-connecting between said plurality of heat source apparatuses (10A,10B) and one or plurality of indoor units (20a,20b,20c), a tubular distributor having one inlet and a plurality of outlets and branching a refrigerant flowing from said first main pipe into the inlet into the plurality of outlets to distribute into said plurality of heat source apparatuses (10A,10B), and connection piping (500A,500B) connecting said plurality of heat source apparatuses (10A,10B) and said plurality of outlets of said distributor respectively, characterized in that said distributor is fixedly disposed against one heat source apparatus among said plurality of heat source apparatuses (10A, 10B) such that the mounting position including the orientation of said distributor is fixed against said one heat source apparatus, wherein the inlet of said distributor is disposed facing perpendicularly downward; the outlets of said distributor are disposed facing perpendicularly upward; the outlets of said distributor are disposed at the same location against the ground; wherein said connection piping (500A, 500B) connecting each of the plurality of heat source apparatuses (10A, 10B) and said distributor has a configuration such that a reverse U-shaped bending part (501A, 501B), which is respectively one end part of said connecting piping (500A, 500B) and respectively connected with said plurality of outlets of said distributor, is formed at an upper location than the inlet position of said distributor; wherein a U-shaped bending part is provided at the other end of said connection piping, wherein the connection piping connects said one heat source apparatus and said distributor, and the U-shaped bending part is connected so that it is made to be a lower side than a connection part with a first manual opening and closing valve in said one heat source apparatus.