Therefore, built-in vacuum manufacturers must adequately protect the fan blades of the motor from debris. Your decision on which brand to use may change on these all-important facts. Looses power as dust builds up in filter. Filter requires shaking in order to clean it, depositing dust on floor beneath. Deposits debris on outside walls, plants, etc.
Screen requires monthly cleaning.
No outside-venting necessary. Extended motor life. Disposable dust-free filterbag. It should be inspected and cleaned occasionally. This is to prevent such things as carpet fiber, cloth, etc. from getting into the motor's impeller blades.