Dyson vacuum filters are engineered to trap microscopic particles and allergens. Our sophisticated filtration system captures 99.99% of allergens as small as 0.3 microns⁴ – and expels clean air. HEPA filtration goes a step further and the standard demands not only for the final post-motor filter in a vacuum to be HEPA-grade, but every single filter and seal throughout the machine. HEPA filtration is available on the Dyson V15 Detect vacuum and traps 99.95 per cent of microscopic particles and allergens as small as 0.1 microns.⁵