The invention relates to a domestic air conditioner for improving heating comfortableness. The domestic air conditioner for improving the heating comfortableness comprises an air conditioner indoor unit shell, a compressor
system, an air duct
system, a
heat exchanger, a centrifugal wind wheel, a main control module, an upper air outlet for air outputting and a side air inlet formed in the side face of the indoor unit shell, wherein the compressor
system, the air duct system, the
heat exchanger, and the centrifugal wind wheel and the main control module are located in the air conditioner indoor unit shell. The domestic air conditioner for improving the heating comfortableness further comprises an auxiliary
electric heating device connected with the main control module, a cross-flow fan wheel and a lower air outlet. The lower air outlet is formed in the bottom end of the
front panel of the air conditioner indoor unit shell, the cross-flow fan wheel is mounted in the bottom end of the air conditioner indoor unit shell and used for discharging
airflow in the air conditioner indoor unit shell from the lower air outlet, and the auxiliary
electric heating device is arranged between the lower air outlet and the cross-flow fan wheel and used for heating air flow flowing to the lower air outlet from the side air inlet. According to the domestic air conditioner for improving the heating comfortableness, the upper space and the lower space of a room are filled with hot air through upper hot air flow and lower hot air flow, the
heating effect of an air conditioner indoor unit is made to be more obvious, and the using comfortableness of a user is improved.