Air quality
Blueair Blue Pure 211i Max
Blueair
Large-room air purifier from Blueair using its HEPASilent filtration (electrostatic charging combined with mechanical filtration), with Blueair-quoted CADR of 450 (pollen), 452 (dust) and 435 (smoke) cfm, coverage up to 674 sq ft and 23-53 dB noise, controlled over Wi-Fi in the Blueair app. Price: $349.99 (grey), checked Oct 4, 2026; the Midnight color is a separate product page at $262.49 on sale (list $349.99). Blueair lists a 30-day home trial, a free extended warranty and HSA/FSA payment. US availability: sold on blueair.com, in stock. Directory: Air quality > Air purifiers.
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