BLUEAIR Air Purifier for Home HEPA Air Purifiers for Pets, Allergies, Dust, Nursery, Office HEPASilent Techonolgy Air Cleaner for Small Rooms 432 sq ft coverage - Blue Pure 511
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Availability:
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Arrives
Tuesday, May 26
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Style: 511 Pure Air Purifier
Features
- COMPACT AND QUIET FOR FRESH AIR: Only Blueair air purifiers use HEPASilent technology; Blue Pure 511 air purifier quickly cleans up to 432 sq ft spaces in 30 minutes or 180 sq ft small rooms in 12.5 minutes with powerful yet whisper-quiet operation at just 24 dB on low speed
- 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 for cleaner air in bedrooms, nurseries and home offices
- EFFICIENT AND COMPACT: Certified by Energy Star as Most Efficient model; BlueairHEPA air purifiers are whisper-silent and use less energy than a light bulb while delivering 4.8 air changes per hour for optimal dust and pet dander elimination. Without taking up too much space enjoy fresh air with the touch of a button***
- 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
- 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
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
Power Source: Corded Electric
Item Weight: 5.24 Pounds
Power Source: Corded Electric
Control Method: Touch
Filter Type: Activated Carbon
Floor Area: 432 Square Feet
Noise Level: 24 Decibels
Particle Retention Size: 0.1 Micron
Controller Type: Button Control
Contaminant Filtration Capability: True
Special Features: Corded
Filter Class: HEPA
Item Dimensions D x W x H: 7.9"D x 7.9"W x 13.9"H
Item Weight: 5.24 Pounds
Color: Grey
Brand Name: BLUEAIR
Model Number: 3131000000
UPC: 689122023182
Manufacturer: Blueair
Part Number: 109994
Included Components: Air Purifier, installed filter, fabric pre-filter
Item Type Name: Air Purifier
Unit Count: 1.0 Count
Specification Met: Energy Star Certified
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, May 26
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 511 Pure Air Purifier
I love it. It’s changed everything for my allergies. It’s quiet, easy to operate, and effective. After a day of use, I noticed my bedroom and bathroom smelled differently. I bought one for my elderly Mom to help with her COPD problems. Highly recommended!
Reviewed in the United States on March 22, 2026 by Gary O. Freedman
Style: 511 Pure Air Purifier
I’ve been looking for a solid air purifier that wouldn't break the bank, and after seeing this one for around $100, I decided to give it a shot. Honestly, it’s one of the best purchases I’ve made for my home recently. What I Love: Whisper Quiet: This was the dealbreaker for me. On the lowest setting (sleep mode), I can barely hear it at all. Even on the medium setting, it’s just a very gentle white noise that doesn't interfere with the TV or sleep. Noticeable Air Quality: I have a dog that sheds quite a bit, and within two days, the "stale" pet smell in my living room was completely gone. The air just feels... crisper. Sleek Design: It’s compact enough to sit in a corner without being an eyesore, and the controls are super intuitive. The Verdict: If you’re looking for something effective without spending $400 on a high-end brand name, this is the sweet spot. It does exactly what it promises and stays quiet while doing it. Definitely worth the $100 investment if you have allergies or pets!
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Reviewed in the United States on February 11, 2026 by Elizabeth Fishman
Style: 511 Pure Air Purifier
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
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Reviewed in the United States on September 10, 2024 by Mom at home
Style: 511 Pure Air Purifier
Got this for the nursery when my kid was born. Had it running on low 24hrs a day for 2.5 years. It was so quiet I often forgot it was there. It reduced dust significantly in the nursery compared to the rest of the house and created a light airflow that just felt comfortable. It was still running strong until my now toddler decided to dump her juice down the top. After one night without it, I could tell the difference in "stale" air in her room. Immediately replaced it.
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Reviewed in the United States on February 15, 2026 by Jessie
Style: 511 Pure Air Purifier
We have had this machine since around 2020 and it works great. I replace the inner filters every 6 months. The outer cover helps make the filter last longer. It had various speeds and noise levels. Overall I would say it’s quiet. It helps reduce dust accumulation, smells and allergies. It is very lightweight and portable, it has been a great value and is still running great five years later. My only complaint is that I have to reset the filter notification. Sometimes it takes me a bit a couple of attempts to reset the notification lights.
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Reviewed in the United States on January 26, 2026 by Amazon Customer
Style: 511 Pure Air Purifier
Put this next to any other air purifier around the same size and price, no contest. I just returned a LeVoit I bought for the same price. Boy was that dumb. Louder than hell, super weak air flow, and smelled like toxic plastics. It was absolute CRAP. This Blueair is very quiet, has amazing air flow, smells like clean air, and looks SO much classier to boot (Scandinavian styling). I have another bigger Blueair in my office. It's been going for years (+ filter changes). Still works perfectly. Sometimes you get what you pay for. But other times, even when you pay the same, you don't. So shop smart. There's a reason good brands are good and cheaper ones aren't!!
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Reviewed in the United States on January 7, 2026 by a bird
Style: 511 Pure Air Purifier
I love this air purifier so much I bought a second & am considering buying a third for another room in my house. I've had them for going on a year & they're still working great. I can really tell the difference when it's running. I have one room that always smells musty & with this running I don't smell it anymore. On the lowest setting I can barely hear it & I'm sensitive to sounds.
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Reviewed in the United States on February 14, 2026 by Jennifer