THE 2-MINUTE RULE FOR O3 AIR PURIFIER

Dyson's units provide a similar but slightly diverse challenge. A few of its air purifiers, including the Dyson Pure Cool TP04, which we also tested in previous a long time, use a HEPA filter, but gives no CADR. A Dyson spokesperson explained to us, "CADR as calculated by some latest approaches just isn't an exact representation of an actual