An air conditioner (1) includes a refrigerant circuit (10) configured to perform a supercritical refrigeration cycle and including: an outdoor circuit (21) including a compressor (22), an outdoor heat exchanger (23), and an outdoor expansion valve (24); and two indoor circuits (31a, 31b) including indoor heat exchangers (33a, 33b) and indoor expansion valves (34a, 34b). The air conditioner (1) further includes a controller (50) configured to control outlet refrigerant temperatures of the indoor heat exchangers (33a, 33b). The controller (50) includes a valve control part (50a) configured to adjust the opening degrees of the indoor expansion valves (34a, 34b) such that a deviation of the outlet refrigerant temperature of each of the indoor heat exchangers (33a, 33b) from an average value of the outlet refrigerant temperatures of all the indoor heat exchangers (33a, 33b) approaches a deviation of a target value which is a deviation, from the average value, of a target refrigerant temperature of the outlet refrigerant temperature of each of the indoor heat exchangers (33a, 33b).