An air conditioner comprising a refrigerant circuit in which a refrigerant circulates through a compressor, an indoor-side heat exchanger, a pressure reducer, and an outdoor-side heat exchanger, the air conditioner being structured by an indoor unit and an outdoor unit, wherein the indoor unit includes: the indoor-side heat exchanger; an indoor-side fan that causes air from an aspiration port formed at an upper part of the indoor unit to exchange heat at the indoor-side heat exchanger and to blow out from a blow-out port formed at a lower part of the indoor unit; a back-side guiding part that guides the airflow from the indoor-side fan in a blow-out direction to the blow-out port; a front-side guiding part that is provided so as to oppose to the back-side guiding part and guides the airflow from the indoor-side fan to the blow-out port in cooperation with the back-side guiding part, the front-side guiding part forming the blow-out port in conjunction with the back-side guiding part; and a wind direction louver assembly that is rotatable to direct vertically and horizontally the airflow guided to the blow-out port, the wind direction louver assembly has a vertical wind direction louver and a horizontal wind direction louver, characterized in that the vertical wind direction louver is structured by three-level blades made up of an upper level blade disposed on a front side in the blow-out port, a lower level blade disposed on a back side in the blow-out port, and a middle level blade disposed between the upper level blade and the lower level blade, the three-level blades being vertically rotatable independently of one another, and the horizontal wind direction louver includes an upper horizontal blade provided at a first blow-out port between the upper level blade and the middle level blade, and a lower horizontal blade provided at a second blow-out port between the lower level blade and the middle level blade, the indoor-side heat exchanger has a first heat exchanging region and a second heat exchanging region, the refrigerant flowing through the first heat exchanging region and the second heat exchanging region via a pressure adjuster, the pressure adjuster in a heating operation mode reduces pressure to causes the first heat exchanging region to attain a first condensation temperature, and to cause the second heat exchanging region to attain a second condensation temperature lower than the first condensation temperature, and air having exchanged heat at the second condensation temperature of the second heat exchanging region is mainly blown out from the first blow-out port, and air having exchanged heat at the first condensation temperature of the first heat exchanging region is mainly blown out from the second blow-out port. the indoor-side heat exchanger; an indoor-side fan that causes air from an aspiration port formed at an upper part of the indoor unit to exchange heat at the indoor-side heat exchanger and to blow out from a blow-out port formed at a lower part of the indoor unit; a back-side guiding part that guides the airflow from the indoor-side fan in a blow-out direction to the blow-out port; a front-side guiding part that is provided so as to oppose to the back-side guiding part and guides the airflow from the indoor-side fan to the blow-out port in cooperation with the back-side guiding part, the front-side guiding part forming the blow-out port in conjunction with the back-side guiding part; and a wind direction louver assembly that is rotatable to direct vertically and horizontally the airflow guided to the blow-out port, the wind direction louver assembly has a vertical wind direction louver and a horizontal wind direction louver, characterized in that the vertical wind direction louver is structured by three-level blades made up of an upper level blade disposed on a front side in the blow-out port, a lower level blade disposed on a back side in the blow-out port, and a middle level blade disposed between the upper level blade and the lower level blade, the three-level blades being vertically rotatable independently of one another, and the horizontal wind direction louver includes an upper horizontal blade provided at a first blow-out port between the upper level blade and the middle level blade, and a lower horizontal blade provided at a second blow-out port between the lower level blade and the middle level blade, the indoor-side heat exchanger has a first heat exchanging region and a second heat exchanging region, the refrigerant flowing through the first heat exchanging region and the second heat exchanging region via a pressure adjuster, the pressure adjuster in a heating operation mode reduces pressure to causes the first heat exchanging region to attain a first condensation temperature, and to cause the second heat exchanging region to attain a second condensation temperature lower than the first condensation temperature, and air having exchanged heat at the second condensation temperature of the second heat exchanging region is mainly blown out from the first blow-out port, and air having exchanged heat at the first condensation temperature of the first heat exchanging region is mainly blown out from the second blow-out port.