It even stores a week's worth of data at a time. After using the Dyson Purifier Cool Formaldehyde TP09 for over a month, I can confidently say that it does a much better job at purifying than it ...

The Dyson Purifier Hot+Cool™ Formaldehyde HP09 purifying fan heater is usually £699.99 but has dropped down to £549.99 for a limited time in the Amazon 'Winter Event'. This fan merges ...

Dyson fans cost several hundred dollars, so we were surprised to see the Dyson Pure Cool Tower TP4A at just $149.99.

The version that destroys formaldehyde, called the Purifier Cool Formaldehyde TP09, costs $100 more. Dyson says its latest air purifiers, including the TP07 and TP09, not only meet the baseline ...