A multi-type air conditioning system comprising: an outdoor unit; and a plurality of indoor units connected in parallel to the outdoor unit, wherein the outdoor unit includes a compressor, and an outdoor heat exchanger that performs heat exchange between outside air and a refrigerant; and a high-pressure gas pipe that is connected to a discharge side of the compressor and feeds a high-pressure gaseous refrigerant, a low-pressure gas pipe that is connected to a suction side of the compressor and feeds a lower pressure gaseous refrigerant than that of the high-pressure gas pipe, and a liquid pipe that feeds a liquid refrigerant are led out of the outdoor unit, the plurality of indoor units include indoor heat exchangers that perform heat exchange between indoor air and a refrigerant, at least one indoor unit is intended for cooling and includes an evaporating pressure adjustment mechanism that adjusts evaporating pressure in the indoor heat exchanger that performs heat exchange of the refrigerant fed from the liquid pipe, the rest of the plurality of indoor units include a cooling/heating operation switching mechanism that switches a flow direction of the refrigerant in the high-pressure gas pipe, the low-pressure gas pipe, and the liquid pipe to selectively switch between a cooling operation and a heating operation, characterized in that the evaporating pressure adjustment mechanism divides the low-pressure gas pipe into a plurality of branch pipes between the indoor heat exchanger and the outdoor unit, includes an openable/closable valve in each branch pipe, and adjusts opening/closing of the valve to adjust evaporating pressure of the refrigerant in the indoor heat exchanger. an outdoor unit; and a plurality of indoor units connected in parallel to the outdoor unit, wherein the outdoor unit includes a compressor, and an outdoor heat exchanger that performs heat exchange between outside air and a refrigerant; and a high-pressure gas pipe that is connected to a discharge side of the compressor and feeds a high-pressure gaseous refrigerant, a low-pressure gas pipe that is connected to a suction side of the compressor and feeds a lower pressure gaseous refrigerant than that of the high-pressure gas pipe, and a liquid pipe that feeds a liquid refrigerant are led out of the outdoor unit, the plurality of indoor units include indoor heat exchangers that perform heat exchange between indoor air and a refrigerant, at least one indoor unit is intended for cooling and includes an evaporating pressure adjustment mechanism that adjusts evaporating pressure in the indoor heat exchanger that performs heat exchange of the refrigerant fed from the liquid pipe, the rest of the plurality of indoor units include a cooling/heating operation switching mechanism that switches a flow direction of the refrigerant in the high-pressure gas pipe, the low-pressure gas pipe, and the liquid pipe to selectively switch between a cooling operation and a heating operation, characterized in that the evaporating pressure adjustment mechanism divides the low-pressure gas pipe into a plurality of branch pipes between the indoor heat exchanger and the outdoor unit, includes an openable/closable valve in each branch pipe, and adjusts opening/closing of the valve to adjust evaporating pressure of the refrigerant in the indoor heat exchanger.