Just tried my new Roomba 780
and it cleaned one of my rooms in about 20 minutes compared to my 563 that takes about an hour to clean the same room.
May it be my old 500:s gearbox and dustbin that makes the 500 so slow to clean or may there be something else that is wrong? Just so I dont order new CHM and new Aerovac and get the same slow performance.
(I cant try the Aerovac on my old roomba since I have Aerovac 2 on my 780).
(I have read the threads about slow roombas I have found and its not dirt on the sensors so it goes slow like when approaching a wall, it changes speed when approaching walls).
Thanks in advance for your suggestions!