sebo_fan
Well-known member
Alex - sorry but I just don't agree with you regarding dirty fan vac bags and clean air bags. I think it has a lot to do with the bag's design as Benny says and the way in which it is positioned - and nowadays the added filtration layers that brands fit into the bags.
For example, I know my Electrolux Z517 was a clean air machine and the bag filled from the top to the bottom, but inadvertently the dust always seemed to stick at the top by the cardboard sleeve holder - the strongest part of the dust bag where it hang locks onto the top of the locks.
I found Hoover's dust bags in the Junior and Senior were a law unto themselves depending on the Junior's model at the time like the U1012 with the top fill hose and latterly same with the U1104. The dust didn't always get deposited to the bottom of the bags. With the bottom fill bags, I used to find that new dust bags would often have dust in the middle, just above the main dust channel and eventually the dust would be pushed to the bottom as the force of more dust would eventually push through to fill the entire bag.
The dust bags in the Oreck XL (dirty fan) are far more efficient and better designed though and I found that they filled to the bottom - but never quite as full to the fullest maximum that Oreck suggested.
The only system that I've seen where dust gets properly chucked to the bottom of the dust bag and is able to fill to the top with dust is with clean air vacs like Sebo's uprights.
For example, I know my Electrolux Z517 was a clean air machine and the bag filled from the top to the bottom, but inadvertently the dust always seemed to stick at the top by the cardboard sleeve holder - the strongest part of the dust bag where it hang locks onto the top of the locks.
I found Hoover's dust bags in the Junior and Senior were a law unto themselves depending on the Junior's model at the time like the U1012 with the top fill hose and latterly same with the U1104. The dust didn't always get deposited to the bottom of the bags. With the bottom fill bags, I used to find that new dust bags would often have dust in the middle, just above the main dust channel and eventually the dust would be pushed to the bottom as the force of more dust would eventually push through to fill the entire bag.
The dust bags in the Oreck XL (dirty fan) are far more efficient and better designed though and I found that they filled to the bottom - but never quite as full to the fullest maximum that Oreck suggested.
The only system that I've seen where dust gets properly chucked to the bottom of the dust bag and is able to fill to the top with dust is with clean air vacs like Sebo's uprights.