DYSON PURE HOT+COOL

Blowing hot and cold isn’t generally a positive trait, but Dyson’s purifying fan heater is built for exactly that. Classier than any other office fan going, this tall and slim device doesn’t just cool down or warm up the room – it’ll clean it too, thanks to the additional HEPA air purifier and accompanying app for monitoring airborne pollution levels. £549 / dyson.co.uk