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BLUEAIR Air Purifiers for Bedroom Small Room Air Purifiers for Home Air Purifiers for Pets Allergies Air Cleaner, HEPASilent Virus Air Purifier for Dust Baby Air Purifier for Nursery Blue Pure 511

  • Based on 10,158 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Oct 5
Order within 19 hours and 58 minutes
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Style: 511


Features

  • COMPACT FOR FRESH AIR: Only Blueair air purifiers use HEPASilent technology; Blue Pure 511 air purifier quickly cleans up to 432sqft space in 30min or 180sqft small room in about 12.5min*
  • POWERFUL YET WHISPER-SILENT: Ideal for bedrooms nurseries or home office with compact footprint and low noise levels; 24 dB quieter than a whisper on low and 49 dB on high
  • HEPASILENT DUAL FILTRATION TECHNOLOGY: Removes at least 99.97% of airborne particles down to 0.1 microns; The tiniest particles, such as viruses and bacteria, are captured, while larger particles such as dust, pollen and smoke are also removed
  • PERSONALIZABLE DESIGN: Our most compact air purifier seamlessly fits into your home with three Scandinavian inspired washable pre-filter colors; you can personalize your air purifier to match your interior; Arctic Trail dark gray pre-filter included
  • EFFICIENT AND COMPACT: Certified by Energy Star as Most Efficient model; Blueair air purifiers are whisper-silent and use less energy than a light bulb; Without taking up too much space enjoy fresh air with the touch of a button****
  • BLUEAIR REPLACEMENT FILTER: Blue Pure 511 Genuine Replacement Filter; B08KPFWBGM fits Blue Pure 511 Air Purifier and is designed for optimal performance
  • LETS CLEAR THE AIR WITH BLUEAIR: Our Blue Pure Max air purifier comes with one filter preinstalled and a pre-filter for easy set up; This product is made for NORTH AMERICA USE ONLY and should only be used with input voltages between 110-120V
  • Air changes per hour (ACH): 4.8

Description

Blueair’s most compact air purifier. Only Blueair air purifiers use HEPASilent™ technology quickly cleaning up to 432sqft space in 30min or 180sqft small room in about 12.5min. The Blue Pure 511 air purifier combines plug-and-play simplicity with signature Blueair performance. Its compact footprint and low noise levels, makes Blue Pure 511 air purifiers ideal to place in a bedroom or office. On highest fan speed. Clean Air Delivery Rate (CADR) based on AHAM AC-1. According to AHAM air changes per hour (ACH) is the measure of the outside air volume added to a space divided by the volume of that space over a set amount of time. Sound pressure on low. A whisper is about 30 dB. Tested on PM 2.5 (0.1 - 2.5 microns) up to 90mins. "Light bulb" defined as LED light bulb with 40 watts energy consumption.

Color: Grey


Brand: BLUEAIR


Product Dimensions: 7.9"D x 7.9"W x 13.9"H


Floor Area: 432 Square Feet


Specification Met: Energy Star Certified


Color: Grey


Brand: BLUEAIR


Product Dimensions: 7.9"D x 7.9"W x 13.9"H


Floor Area: 432 Square Feet


Specification Met: Energy Star Certified


Noise Level: 24 dB


Particle Retention Size: 0.03 Percentage


Controller Type: Button Control


UPC: 689122023182


Special Feature: Corded


Manufacturer: Blueair


Item Weight: 5.24 pounds


Item model number: BLU-110344


Care instructions: Hand Wash


Assembly required: No


Number of pieces: 1


Batteries required: No


Included Components: Air Purifier, installed filter, fabric pre-filter


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Quiet and Effective Air Purifier for Any Small Space
Style: 511
The Blueair Blue Pure 511 air purifier has been a fantastic addition to my home. It’s compact, sleek, and fits perfectly in a bedroom, nursery, or small living area. The design is modern yet simple, making it easy to blend into any space. Setup was straightforward—plug it in, and it’s ready to go. This purifier’s standout feature is its HEPASilent Technology, which combines electrostatic and mechanical filtration for top-notch performance. It captures dust, allergens, and even pet dander without making a sound. I noticed a difference in air quality within hours—my room feels fresher, and my allergies have significantly improved. Another big plus is how whisper-quiet it is, even on higher settings. It’s perfect for nurseries or bedrooms where noise can be an issue. The energy efficiency is impressive too, so you can leave it running without worrying about your electricity bill. Maintenance is simple, with a quick filter change every few months. If I had to nitpick, I’d say it would be nice to have a built-in air quality sensor, but for the price and performance, this purifier is excellent. Whether you need relief from allergies or just want cleaner air, the Blue Pure 511 is a must-have! ... show more
Reviewed in the United States on January 8, 2025 by Spencer

  • Blueair Air system
Style: 511
The Blueair system works great in our Family Room to remove dust and pollen. The system is very quite I can't even hear it run. Yes, I would recommend this product. Note: make sure you buy a couple extra filers they last about 6 months each. Very easy to operate.
Reviewed in the United States on August 22, 2025 by Steve Hamman

  • GREAT
Style: 511
This air purifier is fantastic! So quiet & effective. New filter on left. 6month old used filter on right. I highly recommend this air purifier.
Reviewed in the United States on August 15, 2025 by Nancy Blum Nancy Blum

  • Difficult to understand use, no clear on and off
Style: 511
I like the effectiveness of this air purifier so as far as performance goes, I think it should have five stars. Since there’s no way of testing air quality and we just have to go on faith, I’m guessing that it’s a good quality machine. However, clearly it was designed with aesthetics in mind and not practicality. It’s difficult to turn on an off or to know how to turn it higher or lower. You do this with a series of taps on the top ring. It’s very Star Trek in a very unnecessary way. I love Star Trek. I love everything about Star Trek. I don’t think even they would’ve kept this on the enterprise because it’s too annoying to use , however, having said that I just turned mine on low and keep it on all the time. I have noticed that environmental allergies bother me much less this year. If you are into the super modern look and have the gray walls that all designers think everyone should have now, you might love this look and usage facility might not bother you. I don’t think an older person would be able to use this easily. The only thing that lets you know if it’s on or off is a light that shines for a moment when you tap it. There is delay in the action so you don’t know if you’ve actually turned it up higher or turned it off for a few seconds, so if you’re impatient like me and tap it again, you’ll probably accidentally turn it off and have to start all over again . Again, weird design, leaving you confused. Is very silent and that’s a big plus. It probably deserves one more star, but I’m too annoyed with the lack of the on and off clarity to increase my stars. Here’s an idea, how about somebody make a vintage looking air purifier with simple on off switches, make it look like a vintage radio. I bet that would be a big seller, the nice old-fashioned knobs. On and off. I have no idea how I’m going to change the filter when it’s time to change it, the whole thing is a mystery as to how it’s assembled, and I wish they would just include a few extra filters with the purchase so then you weren’t trying to figure out what kind of machine you have and which kind of filters to buy six months later. I’d be willing to pay extra to have the extra filters delivered with the purchase. If I sound annoyed it’s because I am. But I’m sure the machine is good quality. Updated review 9/11/24: The machine is actually silent on low. It’s been on all day and I didn’t even know it. You literally cannot hear it at all on its lowest setting. It also did a great job getting rid of a smell that was from something burned in my kitchen. So it is a very effective machine. I also now am wondering if the thing that I found fault with is actually a benefit to older people with arthritis if they cannot turn a knob, then just tapping the top might be very helpful to them. In fact, anyone with mobility issues could put this beside their bed and just tap it at night in the dark and it would be easy to use for them. Because it is silent, it will not work for you as a white noise machine. I’m now going to add a star. Xo ... show more
Reviewed in the United States on September 10, 2024 by Mom at home

  • Perfect for my office and my dog.
Style: 511
I have a relatively small office/den and my dog spends quite a bit of time in here. We had bought one of the larger blue air purifiers and found it worked extremely well. I bought the basic 511 model, which is the right size for my office. While this one doesn't have Wi-Fi and app control, it's easy to Control with a single button. On its lowest setting, I can't even hear it. After a couple of days, I've noticed an improvement with air quality, especially the first time I walk into my office. I think it helps that I put it right next to my dog. 😉 ... show more
Reviewed in the United States on September 5, 2025 by Steve-o

  • Blueair purifiers are the best!
Style: 511
Purifies air as promised. Quiet on low and some fan sound on high, hardly noticeable. Simple and sleek design, not too big or too small, good for bedroom use. Hand-washable fabric pre-filter available in different colors along with affordable HEPA filter replacements (about one filter change per year) makes this purifier a great buy. Blueair is now my first choice for air purifiers! ... show more
Reviewed in the United States on May 28, 2025 by Jane

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