The Humidify+Cool contains a HEPA filtration system as well as a separate carbon filter detects formaldehyde. I suppose it may be owing in part to my obsession with clean air, but, up to now, the Dyson has claimed very good air good quality every time I’ve checked in–the only exceptions https://metalstrapforapplewatchba96160.tokka-blog.com/26499377/indicators-on-pure-enrichment-air-purifier-filter-you-should-know