The Humidify+Cool features a HEPA filtration system plus a different carbon filter detects formaldehyde. I suppose it may be due partly to my obsession with clean air, but, so far, the Dyson has documented excellent air good quality anytime I’ve checked in–the one exceptions becoming right after I’ve lit candles https://connersaems.blue-blogs.com/32455512/indicators-on-whole-home-water-purifier-you-should-know