The invention provides an air conditioner. The air conditioner comprises an outdoor unit (1), an indoor unit (2) and a
refrigerant pipeline (3) connected between the outdoor unit (1) and the indoor unit (2). The
refrigerant pipeline (3) comprises a first pipeline part (31) located in the indoor position and a second pipeline part (32) located on the outdoor position, and a first
refrigerant filling
nozzle (41) capable of carrying out vacuumizing or refrigerant filling on the refrigerant pipeline (3) is arranged on the first pipeline part (31); and / or, a connecting
pipe (5) is further connectedto the second pipeline part (32), one end of the connecting
pipe (5) can communicate with the interior of the refrigerant pipeline (3), and the other end of the connecting
pipe (5) extends into the indoor position and is connected with a second refrigerant filling
nozzle (42) capable of carrying out vacuumizing or refrigerant filling on the refrigerant pipeline (3). By means of the air conditioner, vacuumizing and refrigerant filling can be carried out on an air conditioner
system on the indoor side, mounting and maintenance is simpler and more convenient, and the
safety coefficient is improved.