<p>Provided is a built-in type air conditioning device in which the maintainability and efficiency of an indoor heat exchanger are improved. A heat exchanger (60) includes an upper side heat exchanger and a lower side heat exchanger coupled in a substantially dogleg shape in a side view, wherein the lower end of the upper side heat exchanger is disposed on and overlapped with the lower side heat exchanger at the bent portion of the dogleg shape. The heat exchange area of the lower side heat exchanger is set to be larger than that of the upper side heat exchanger. Reverse U-shaped grooves (66A, 66B) that open downwards are provided so that an auxiliary refrigerant pipe (67) of the heat exchanger (60) can be inserted into a heat exchange chamber integrally with the heat exchanger (60). At both ends of the heat exchanger (60), fixing members (63A, 63B) made of resin are also provided that are fixed to the front panel (16) and top panel (12) of a unit main body (10) and used for fixing the heat exchanger (60) to the inside of the unit main body (10).</p>
