The term bagless is really a misnomer!
The BAG is a FILTER, that doubles as the holding vessel.
Bagless vacuums still use a FILTER, only it does not double as the
The FILTER in Bagless vacuums is usually better than the media used in
Bag type machines, however, this often means they clog up much faster
making the vacuum much more inefficient when it comes to cleaning.
There are a few Bagless vacuums on the market that are designed such
that very little dust makes it to the final filtering stage, and even
a couple that have no filters at all and trap the dust in other
methods. But these types are very expensive!
In the home I moved from, I had installed a central vacuum system, but
not the normal type that is readilly available. I chose a commercial
blower type system with twin traps, one was a wet screen trap, very
light filtering actually and it was exhausted to outside the home so
any microfine particulates would be out of the home completely.
It is NOT hard to install a central vac if you are at all handy at
doing things or know someone who is who will install it for you.