A backpack power apparatus (10, 10A) is comprised of a back carrier frame (11, 11a, 11b) for being piggybacked by a user, a blower unit (20) including a fan (22) driven by a drive motor (21) for sucking in or blowing out air through an airflow duct (24, 25), and an airflow tube (30, 30A, 31, 32, 33) fluidically communicating with the airflow duct (24, 25) of the blower unit (20) for sucking in or blowing out air through the airflow tube (30, 30A, 31, 32, 33). The blower unit (20) is mounted on the back carrier frame (11, 11a, 11b) via a vibration isolating means (23), and the airflow tube (30, 30A, 31, 32, 33) is supported on the back carrier frame (11, 11a, 11b) and adapted for being held and operated by the user when in use. The airflow tube (30, 30A, 31, 32, 33) is floatingly coupled to the airflow duct (24, 25) of the blower unit (20).
