One-minute reviewThe changing seasons can make it difficult to precisely predict the indoor temperature and air quality, yet with the Dyson Purifier Hot+Cool Formaldehyde HP09 you can prepare for any eventuality.At this point, we all know Dyson is king when it comes to all things air, from making some of the best air purifiers to its prolific Dyson Airwrap. Now, it adds the Dyson Hot+Cool Formaldehyde to its collection of bladeless fans, an all-in-one air treatment device packed with
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