Dyson Hot + Cool AM09 review: the world's best heater fan?

Arguably the best small heater fan available, Dyson's newest innovation is powerful and very beautiful - but comes with a hefty price tag

The weather hasn't made up its mind. One day it's hot and sunny, the next windy and rainy. Welcome to April in the UK. Dyson reckons its new fan, which blows both hot and cold, is the answer - with an eye-watering price tag to match.

The new Dyson AM09 is the company's latest in its series of bladeless fans - a heater and fan combined into an oblong loop. It's the third version of Dyson's "Hot + Cool" fans - the first two, the AM04 and AM05, were subject to a recall last year for a fire risk found in models manufactured before April 2014.

Pros: heats a room quickly, powerful small fan, easy to use remote, exact temperature control

Cons: expensive, noisy enough to drown out a TV at full blast, can only push warm air around