“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 next day free
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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: 43 Total 4 star reviews: 9 Total 3 star reviews: 5 Total 2 star reviews: 5 Total 1 star reviews: 5
78%would recommend this product
67 reviews
- DDianeK3 months agoRated 2 out of 5 starsDisappointed
Not thrilled. Have replaced the filter many times in the past 1 1/2 years (as evidenced by my orders) and have extra pre filters that i wash regularly. My bedroom walls, drapes, picture above unit and the unit's cord itself require constant cleaning. I was going to buy a larger model for this SMALL room but quite frankly I'm afraid I'll be as dissatisfied with it as I am the 511.
BUBlueair UK3 months agoWe appreciate you taking the time to share your experience with your Blue Pure 511. It sounds like you’ve been diligent in maintaining your purifier. Dust buildup on nearby surfaces can sometimes occur because the purifier draws airborne particles toward itself, which may make settled dust more noticeable in the surrounding area. We’ve reached out directly to learn more and review your unit’s performance.,Blueair,Blueair Team,clientresponse
- JHJenn H.1 year agoRated 2 out of 5 starsSwing and a miss!
I was disappointed that it started statically charging dust which stuck to the unit, walls, and furniture nearby. After digging into why, I was surprised to find out the machine has a form of ionizer (which can create small amounts of ozone). I didn’t feel it was safe enough for my home and I don’t think it did as good a job as a unit with a true HEPA filter.
- DDrina1 year agoRated 5 out of 5 starsI’ve underestimated this QUALITY AIR FILTER🥰
Wonderful filter!! but you need at least 2 of the smaller units. My 2 sons who stink up the place when coming in from sports& Cooking aromas NOW NOTHING!! My prayers have finally been answered
- KKLM131 year agoRated 1 out of 5 starsGreat at first and then stopped working.
I bought this 1 year ago. 6 months in the fan stopped working. When I tried to get it fixed and look into it, I get the run around. I cleaned the sensor and replaced the filter every 3 months. The light is blue but the fan no longer runs. I spent good money on this and am rather disappointed. Troubleshooting with the company or a replacement would help but no luck getting any help,
BUBlueair UK1 year agoThank you for leaving a review. I’m so sorry to hear about your experience regarding your Blue Pure 511. Quality is important to us, and we’d love to make this right. Our team will email you directly to resolve this issue.,Blueair Team,,clientresponse
- KSKevin S.Verified Buyer1 week agoRated 4 out of 5 starsVery good
Like the thicker outer covering, though I was expecting it to be taller, so the filters in my other one could fit both, and that's a little disappointing.
BUBlueair UK1 week agoThank you for your review of the Blue Pure 511. We’re happy to hear you like the outer pre-filter. We appreciate your input on the filter compatibility, as feedback like this is valuable as we continue to improve our designs. Thanks for choosing Blueair and allowing us to be part of creating a cleaner, more comfortable home for you.