Dyson DC22 is a compact cylinder, one-third smaller than other Dyson cylinders. Like all Dyson machines, the DC22 doesn’t rely on bags or filters to capture all the dust. Instead patented Root Cyclone™ technology spins dirt from the airflow, so it doesn’t lose suction. Dyson engineers have taken this technology one stage further and developed core separator technology to capture even more microscopic dirt. Dirt now goes through three stages of separation extracting at least particles as small as mould and bacteria.