#1
Blueair
Blue Pure 511i Max
10 positive 0 neutral 4 negative
Based on 14 Reddit mentions
$139.00
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Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
New to Air Purifiers - please help
Medify MA-25 is stronger for smoke; Blueair 511i is only good for small rooms Any idea why the Blueair is more expensive than the Medify, though?
Iris-Sofia in r/AirPurifiers
January 7, 2026 6:43 AM
1
Bought the 511i Max. Waste of money?
The sensors onboard almost all consumer-grade air purifiers are very cheap and inaccurate. For example, a good consumer-grade AQI monitor like the AirGradient ONE is approximately $230 USD or £173 (I'm just converting currency on my end; stockists in the UK may have higher prices). Outdoor AQI can c
...sissasassafrastic in r/AirPurifiers
October 13, 2025 3:41 PM
1
