There is disclosed an air conditioner which can realize appropriate air conditioning control in a situation closer to a feeling temperature even in a case where a floor surface of a room to be conditioned is low. The air conditioner which blows air subjected to heat exchange between the air and a user side heat exchanger into a room to be conditioned by an indoor side blower comprises a user side controller which controls a revolution speed of the indoor side blower based on the present temperature in the room and a set temperature, and this controller raises the revolution speed of the indoor side blower in a case where an outside air temperature is not higher than a predetermined revolution speed rise temperature during a heating operation.