“It’s a great performer for a machine of its size and power. It’s also extremely quiet, staying below our 50-decibel limit for comfortable TV viewing and sleeping, even on high...its display goes dark automatically, so this machine won’t be a distraction when you’re trying to nap or work.”
Wirecutter Best Air Purifiers of 2024
Why choose Blue Pure 511?
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Compact & Space-Saving Design
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Simple, One-Button Control
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Whisper Quiet
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Sleek Scandinavian design
Independently proven performance
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Ship free next day
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30 day home trial
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Authenticity guaranteed
Technical Specifications
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Dimensions(HxWxD)
13.4” x 7.9” x 7.9”
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Product Weight
1.9 kg
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Energy Consumption
16 W
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Sound level
24-49 dB
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Air outlet
top
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Recommended room size
16 m²
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Air changes per hour (ACH)
4.8
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Clean air delivery rate (CADR)
Pollen 123 cfm
Dust 123 cfm
Smoke 122 cfm
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Number of filters
1
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Speed control options
1 - 2 - 3
FAQ
Total 5 star reviews: 51 Total 4 star reviews: 12 Total 3 star reviews: 7 Total 2 star reviews: 6 Total 1 star reviews: 5
78%would recommend this product
81 reviews
- NMNancy M.Verified Buyer1 week agoRated 5 out of 5 starsTrust this Air Cleaner
Great product and great customer service!
- CTCatherine T.Verified Buyer1 week agoRated 5 out of 5 starsThe BEST air purifier in THE WORLD!
I've always had an air purifier in every room for most of my life. We recently had air quality issues due to dust and dander (despite rigorous cleaning), and none of our purifiers were doing the trick. Because of the way the air flows in our house, everything gets trapped, and ends in my son's corner room, which caused allergies. We have been using this small, Blue Pure 511 in his room for almost two weeks now, and it's AMAZING. Crystal clear air, so pure, so amazing, NO ALLERGIES. We will now be switching all our purifiers to Blue Air! 10/10! What a lifesaver! Thank you!
- DVDennis V.Verified Buyer1 month agoRated 2 out of 5 starslight
Good, quiet, but needs an light that indicates it is on [operating]
BUBlueair UK1 month agoThank you for sharing your feedback with us! Regarding the Blue Pure 511, the display light is actually designed to illuminate for a few seconds upon startup before automatically dimming to ensure a non-disruptive environment. We appreciate you bringing this to our attention, as it helps us understand how we can make our product features even more intuitive.
- GCGeorgiann C.Verified Buyer1 month agoRated 3 out of 5 starsBlue pure 511 prefilter
I got the filter separate from the purifier and it was not clear that there were 2 shipments on this order - also, I thought this filter was dark grey, I got a dark blue.
Please advise - thank you
Just now setting it up to use
BUBlueair UK1 month agoThank you for reaching out, and we appreciate your patience while setting up your new Blueair unit. We sincerely apologize for the confusion regarding your shipment and for the incorrect pre-filter color you received. A member of our support team will contact you directly to investigate this further and ensure we get the correct items to you as quickly as possible.
- DADavid A. M.Verified Buyer1 month agoRated 4 out of 5 starsDavid McDougal
May consider buying a second Blue Air for 25x25 foot room. Suggestions on model?
Cannot not find info on how much energy the units consume and best location area for large room unit.
BUBlueair UK1 month agoThank you for sharing your feedback with us and having your trust in our products. We appreciate your consideration of adding a second Blueair unit for your larger space. Our team will be reaching out to you directly to assist in selecting the most suitable system for a large room and to provide details on energy consumption and optimal placement.