The Humidify+Cool has a HEPA filtration system and also a different carbon filter detects formaldehyde. I guess it may be owing partly to my obsession with clean air, but, so far, the Dyson has described good air good quality whenever I’ve checked in–the sole exceptions remaining right after I’ve lit https://modernbookmarks.com/story16790367/what-does-best-water-purifier-survival-mean