Dyson Purifier Hot+cool Formaldehyde

This machine heats, cools and tackles household pollutants

$1099, dyson.com.au

PROS

Ready for summer or winter Captures formaldehyde and allergens Can be controlled with an app

CONS

Quite expensive

Filter will require replacement Can be noisy when heating

Dyson won plenty of human fans when it launched fans with no blades. Its cooling machines have evolved a lot since then, however, and will now also heat a room and purify the air inside it. The latest model is equipped with HEPA H13 and carbon filters to remove dust, pollens and other allergens, as well as a catalytic filter to trap formaldehyde molecules from wooden furniture, new carpets or cigarette smoke. It has a small display but also connects to an app using Wi-fi to report its findings.