Blueair Blue Pure 311i Max vs Dyson Purifier Hot+Cool HP2 De-NOx

Blueair Blue Pure 311i Max wins on value and verified performance. It is AHAM Verifide at 283 CFM smoke CADR for 439 sq ft, Energy Star certified at 7.8 W, and reports three particle sizes, for a small fraction of the price of Dyson Purifier Hot+Cool HP2 De-NOx.

What each one can detect and do. Dyson Purifier Hot+Cool HP2 De-NOx senses PM2.5, VOCs and formaldehyde and adds heating plus cooling, while Blueair Blue Pure 311i Max only measures particles (PM1, PM2.5 and PM10) and only purifies. The Dyson is an air treatment appliance, the Blueair is a focused, low-power cleaner.

Blueair Blue Pure 311i Max, by a wide margin. It draws 7.8 W at full speed and is Energy Star certified, so leaving it on around the clock costs very little. Dyson Purifier Hot+Cool HP2 De-NOx publishes no power figure and carries no Energy Star certification, and its heating mode is inherently power hungry.

Only Dyson Purifier Hot+Cool HP2 De-NOx, which is Matter certified and works with Apple HomeKit and Samsung SmartThings alongside Alexa and Google Home. Blueair Blue Pure 311i Max stops at Alexa and Google Home through the Blueair app.

Buyers furnishing a bedroom, nursery or home office who want third-party verified airflow, three-size particle readings and the lowest running cost in this comparison, without paying for sensors and heating they will not use.

Households worried about formaldehyde, VOCs or NO2 from new furniture, renovations or traffic, and anyone who wants a single tower that purifies, heats and cools. Its 2 year warranty and Matter plus HomeKit support also make it the better fit for Apple-centric smart homes.