Considering how well Dyson does with household devices, it isn\u2019t surprising to see the Dyson TP04 Pure Cool Tower make a stand as the best air purifier. But does it do well as the best large room air purifier? Its performance certainly tries, along with smart features and an Auto Mode for setting and forgetting.\r\n\r\nWhy We Like It - Dyson TP04 Pure Cool Tower\r\nThe Dyson TP04 Pure Cool Tower not only makes big upgrades from previous generations, but also steps forward into the modern age with smart features to accompany fantastic performance.\r\n\r\nPower & Speed\r\nThere\u2019s ten different speeds to choose from, whereas most have three or maybe four. Setting it to the highest will net you around 900+ CFM. Even with such strong airflow air speeds, it\u2019s surprisingly efficient with energy consumption, only ever using 56 watts at its highest speed.\r\nEfficiency\r\nBut what kind of coverage does that entail? Dyson tested the Dyson Pure Cool TP04 Purifying Fan with 290 feet squared in mind, but it still does exceptionally well in a 400 square foot room. Alternatively, you can use Fan Mode to cool yourself or use Airflow Mode to improve indoor air quality without blowing cool air on yourself. However, the Alen Breathesmart Classic Large Room Air Purifier covers 1100 sq. ft.\r\nVersatility\r\nUnlike the Levoit Core 300, the Dyson Pure Cool Purifying Tower Fan TP04 doesn\u2019t have a pre-filter; dust pollen and other particles go straight to its HEPA filter. At that stage, 99.97% of particles as small as 0.3 microns are trapped. Afterwards, the activated carbon filter kicks in and handles odors and harmful gases (like nitrogen dioxide).\r\nDurability\r\nThis is Dyson we\u2019re talking about, so of course durability is quite good. It\u2019s nearly 11 lbs and measures 8.77 x 8.77 x 41.49 inches. There\u2019s a large base for better stability, but it\u2019s rather tall, so take care not to accidentally topple it over.\r\nValue\r\nThere\u2019s no debating the efficiency and power of the Dyson Purifying Fan TP04. Dyson air purifiers have come a long way, and the TP04 Pure Cool Purifier Fan is the result of that. However, it\u2019s too expensive, plain and simple\u2014especially compared to a Coway Airmega 400. Sure, the Dyson Link app is nice for scheduling and keeping tabs, as are real time air quality reports, so it comes down to preference. And don\u2019t forget: you have to purchase replacement filters, too.\r\nDyson TP04 Pure Cool Tower Wrap Up\r\nThe Dyson TP04 Pure Cool Tower is packed with features, a great design, and incredible performance. Its filtration system traps 99.97% of particles as small as 0.3 microns, and it feels right at home in 400 square foot rooms. However, that doesn\u2019t change the fact that it\u2019s over priced.