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Key Specs Dimensions: H 30 in, W 8.6 in, D 8.6 in Weight : 12.6 lbs Filters : HEPA H13 filter, activated carbon filter and catalytic filter for formaldehyde Max noise : 48 dB Coverage : Up to 2,860 square feet Modes : 10 fan speeds, auto mode, sleep mode, plus cooling and warming settings Warranty : 2-year parts and labor Energy Star Certified : No The Dyson Purifier Hot + Cool Formaldehyde claims to provide a healthier, cleaner atmosphere in your home by removing pollen, dust, pet dander, mold and harmful odors from household chemicals

They are designed to make the most of Ultras smart features, including Smart Pod Recognition, ClearView Display, flavour and nicotine strength information, and MyVuse App functionality

It seems resolved but it wasnt addressed

"Chemical Contaminant Rules"