| DBlain | 12-18-2014 08:16 PM |
I think the industry has really made a mistake touting all these "bag less" vacs. I understand a lot about the air flow on these type of products because I sell industrial filters for dust collection and the premise is sort of the same. When you have a bagless vac you wind up with about 3 or 4 filters in various parts of the vac, sometimes you don't even have a clue where all these filters are. So while it might seem easy to just dump out the dust in the receptacle what is happening is there are pre filters before the receptacle that are getting clogged, when those filters clog it cuts down on the air that flows through the vac, the air flow is what gives you the suction you need to pick up the dirt. So in order for your vac to keep sucking you need those filters to be clean so you have to pull and clean them by hand, which is a PITA, I would much prefer to just throw a bag out every few months. In industrial dust collection the filters all have compressed air nozzles in the center of them that automatically sprays a burst of air to clean, our personal vacs do not have that, so you have to keep taking the filters out to clean them and if you don't you will continue to loose air flow/suction and then your vac will not pick up the dirt. | 