AIR CONDITIONER

PROBLEM TO BE SOLVED: To suppress an increase in a size of a heat exchanger and an increase in a consumed power according to an increase in a ventilating resistance by providing to decrease a density of louvered slits as compared with others in fins of third to first rows continued to a refrigerant inlet and a refrigerant outlet at the time of heating. SOLUTION: Many heat transfer tubes 102 are coupled by a piping via bent pipes 103, Y-shaped branch pipes 104 or T-shaped branch pipes 105 to constitute a pass. Number of arrays of the heat transfer tubes of an inverted V-shaped upper heat exchanger 22a and a front surface heat exchanger 22b are three rows. A refrigerant outlet at the time of a heating operation is disposed on a back surface oblique part 22aB of each of the exchanger 22a of the three rows of the exchangers, and a refrigerant inlet at the time of the heating operation is disposed on a lowermost leeward side (third row, a side nearest a cross flow fan 24) of the exchanger 22b. A density of louvered slits is reduced as compared with others at fins of third to first rows continued to the inlet and the outlet.