That's not so useful in summer perhaps but in a cold room in winter, it's very nice indeed. If you have been waiting for Dyson to achieve Peak Fan, the Pure Hot + Cool Formaldehyde is it.

so this Amazon deal taking the price down to just $315 is perfectly timed as the cold-weather months approach. See at Amazon The Dyson Hot+Cool AM09 Jet Focus fan multiplies the air in a room and ...

They’re fairly expensive though, which is why Dyson fan deals are always in high demand. Dyson Hot+Cool AM09 Jet Focus heater and fan — Buy at Amazon Dyson Purifier Cool TP4B Purifying Fan ...