An air conditioner configured to condition air of a dwelling, the air conditioner comprising: an outdoor unit; and an indoor unit including a heat exchanger, wherein the indoor unit comprises: a communicator configured to communicate with an access point to connect the air conditioner to a network through the access point, and a controller configured to: receive information from an external server (100, 200), through the communicator, when a new terminal is connected to the access point or a terminal connected to the access point is disconnected from the access point, receive, through an inputter, an input for an Artificial Intelligence mode from an occupant of the dwelling, when the input for the AI mode is received, control the communicator to transmit to the external server (100, 200) a message requesting the information, the information including information output by a neural network relating to terminals currently connected to the access point, and change an operation temperature of the air conditioner and/or an operation mode of the air conditioner in accordance with the received information. an outdoor unit; and an indoor unit including a heat exchanger, wherein the indoor unit comprises: a communicator configured to communicate with an access point to connect the air conditioner to a network through the access point, and a controller configured to: receive information from an external server (100, 200), through the communicator, when a new terminal is connected to the access point or a terminal connected to the access point is disconnected from the access point, receive, through an inputter, an input for an Artificial Intelligence mode from an occupant of the dwelling, when the input for the AI mode is received, control the communicator to transmit to the external server (100, 200) a message requesting the information, the information including information output by a neural network relating to terminals currently connected to the access point, and change an operation temperature of the air conditioner and/or an operation mode of the air conditioner in accordance with the received information. a communicator configured to communicate with an access point to connect the air conditioner to a network through the access point, and a controller configured to: receive information from an external server (100, 200), through the communicator, when a new terminal is connected to the access point or a terminal connected to the access point is disconnected from the access point, receive, through an inputter, an input for an Artificial Intelligence mode from an occupant of the dwelling, when the input for the AI mode is received, control the communicator to transmit to the external server (100, 200) a message requesting the information, the information including information output by a neural network relating to terminals currently connected to the access point, and change an operation temperature of the air conditioner and/or an operation mode of the air conditioner in accordance with the received information. receive information from an external server (100, 200), through the communicator, when a new terminal is connected to the access point or a terminal connected to the access point is disconnected from the access point, receive, through an inputter, an input for an Artificial Intelligence mode from an occupant of the dwelling, when the input for the AI mode is received, control the communicator to transmit to the external server (100, 200) a message requesting the information, the information including information output by a neural network relating to terminals currently connected to the access point, and change an operation temperature of the air conditioner and/or an operation mode of the air conditioner in accordance with the received information.