Unlike all other vacuums, this one doesn't lose suction. It's because of the new, revolutionary Dyson Cinetic science - it captures the dust that clogs others. It doesn't have any dirty filters to wash or replace. And it has whole-machine HEPA filtration. There's also a Tangle-free Turbine tool to remove dirt and hair from carpets and upholstery. Dyson Cinetic tips oscillate to prevent microscopic dust blocking the airflow. The dust separation means there's no need for a pre-motor filter, so Dyson Cinetic science doesn't lose suction.Dyson Cinetic science is so efficient there are no filters to wash or replace. The only vacuum with no maintenance and no loss of suction. Only Dyson Cinetic™ science doesn't lose suction. It captures the microscopic dust that clogs conventional vacuums - so there are no dirty filters to wash or replace.