What is the maintenance difference between using a disposable bag and bag-less ?

Using your system with a disposable filtration bag will add protection to your motor and reduce the maintenance time. Since all the debris will be contained in the bag, the washable permanent filter will stay cleaner and will last longer.

Using your system without a disposable filtration bag is not issue. You may have to clean your canister and permanent filter more often. If done properly, this will prevent debris from reaching the motor and ensures maximum motor performance.