A blowing machine has a main machine where the main machine includes a housing, a motor and a fan with the housing having a main machine air channel in which the motor and the fan are at least partially accommodated. An airflow guiding assembly is attachable to the housing and has an air duct for guiding the airflow and an airflow guiding member for guiding a part of the airflow in the air duct to flow in a direction deflecting from the first axis.