A:Answer Hello there, this is Kelly with Dyson. The Dyson HEPA filters will have a filter life of 4382 hours; if using your machine 24 hours a day the filter life is going to be about six months. If you run the machine 12 hours each day the filter will last you a year. Dyson purifiers are designed to capture 99.97% of particle pollutants as small as 0.3 microns. This will include things like mold, bacteria, odors, pollen, pet dander and potentially harmful ultra-fine particles.
Best wishes,
Kelly
Dyson Customer Support