Heat exchanger and indoor unit having the same

An air conditioner comprising:

• a casing;
• an upper fixture installed on an upper portion of an inner side of the casing;
• a lower fixture installed on a lower portion of the inner side of the casing;
• an inlet duct connection hole and a vent duct connection hole formed at the casing;
• a fan blower configured to blow air brought in through the inlet duct connection hole;
• and
• a heat exchanger configured to exchange heat with the air blown by the fan blower,
• wherein the heat exchanger comprises:
• a first heat exchanger provided in a form of a plate and including a plurality of first heat exchange elements, a first end and a second end of the first heat exchanger each having a shape of a staircase in which corners and planes are alternately formed;
• and
• a second heat exchanger provided in a form of a plate and arranged to be inclined to the first heat exchanger, the second heat exchanger including a plurality of second heat exchange elements, a first end and a second end of the second heat exchanger each having a shape of a staircase in which corners and planes are alternately formed,
• wherein a corner of the first end of the first heat exchanger is positioned to face a plane between the first end and the second end of the second heat exchanger,
• wherein the second end of the first heat exchanger is supported by the upper fixture, and
• wherein the second end of the second heat exchanger is supported by the lower fixture.