A washing machine includes a first tub storing water; a first drum provided to be rotatable in the first tub; a first driving motor for rotating the first drum; a second tub storing water; a second drum provided to be rotatable in the second tub; a second driving motor for rotating the second drum; at least one heater for heating water stored in at least one of the first tub and the second tub; and a controller configured to determine whether the at least one heater and the second driving motor are operating at a time to operate the first driving motor, and control operation of the second driving motor to be stopped and control the first driving motor to be operated when the at least one heater and the second driving motor are operating.