BLUEAIR Blue Pure 511 Air Purifier, Particle + Carbon Filter

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Product guide

BLUEAIR Blue Pure 511 Air Purifier, Particle + Carbon Filter

Filter: The BLUEAIR Blue Pure 511 is a compact, corded air purifier with particle and carbon filtration, designed for bedrooms, dorms, and home offices. The listing claims 24 dB operation on low and up to 432 square feet of coverage, while recommending a smaller room for its stated air-change rate.

At a glance

HEPASilent dual filtration is claimed to capture at least 99.97% of airborne particles down to 0.1 microns.
Manufacturer claims coverage up to 432 square feet in 30 minutes, or 180 square feet in about 12.5 minutes, at highest fan speed.
Low-speed noise is listed at 24 dB. A separate manufacturer FAQ lists up to 49 dB on high.
Washable fabric pre-filter is included, and the manufacturer says it can be washed on a gentle cycle with mild detergent.

Price

$74.99Save 25%

Reference price: ~~$99.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Compact listed dimensions and 5.2-pound weight suit placement where floor space is limited.
Touch controls provide simple operation without a listed app or network setup.
The supplied filter combines particle filtration with activated carbon, according to the model description.

Cons

The stated 432-square-foot coverage is tied to a 30-minute cleaning claim, while the manufacturer recommends around 192 square feet for its stated four air changes per hour target.
The listing specifies North American use with 110-120V input, limiting suitability outside that voltage range.

Technical specifications

12 specifications

Identity
Brand	BLUEAIR
Model	Blue Pure 511 100-120V with Particle + Carbon filter, Arctic Trail

Filtration and coverage
Filter type	Activated Carbon
Filter class	HEPA
Particle retention size	0.1 micron
Listed floor area	432 square_feet
Listed noise level	24 db
Specification met	Energy Star Certified

Controls and power
Control method	Touch
Power configuration	Corded Electric

Dimensions and installation
Dimensions	7.9"D x 7.9"W x 13.9"H
Weight	5.2 pounds

What to know before buying

Listing details to confirm

Coverage claims vary by context: the title says up to 907 square feet, product details list 432 square feet, feature text claims 432 square feet in 30 minutes and 180 square feet in about 12.5 minutes, and manufacturer guidance recommends around 192 square feet for four air changes per hour. Confirm the room-size metric that matches your needs. The title also calls the color Blue 511, while model details specify Arctic Trail and the color field says White/ Dark Grey. The model description lists 100-120V, while the use note specifies 110-120V. Noise is listed as 24 dB on low and up to 49 dB on high.

What’s in the box

Included

Air purifier
Installed filter
Fabric pre-filter

Who is it for?

A good fit for

Bedroom, dorm, or office users seeking a compact purifier for a smaller room and simple touch controls.
Buyers who want a washable fabric pre-filter and manufacturer-claimed particle filtration with an activated-carbon component.

Less suited to

People needing one clearly substantiated coverage figure for a large room without checking the listing's differing room-size claims.
Users outside North America or without 110-120V input, according to the stated use restriction.

BLUEAIR Blue Pure 511 Air Purifier, Particle + Carbon Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 3,331 ratings

5 stars72%72%
4 stars13%13%
3 stars6%6%
2 stars3%3%
1 star6%6%

Customer feedback highlights compact size, quiet operation, and perceived improvements in air quality and allergy symptoms. Those reports may matter to buyers placing this unit near a bed or desk, though they do not establish a guaranteed result. Feedback is mixed on value, and some customers report durability problems, including units failing after months of use.

Positive themes

Customers describe the purifier as compact and quiet, and report perceived air-quality and allergy relief.

Negative themes

Some customers report durability concerns, including units breaking after months of use.

Mixed feedback

Opinions on value for money differ.

Frequently asked questions

How large a room is the Blue Pure 511 listed for?

The title says up to 907 square feet, but product details list 432 square feet and manufacturer claims specify different cleaning times and room sizes. The manufacturer also recommends around 192 square feet for its stated four air changes per hour target. Check which room-size claim applies to your use.

How loud is it?

The listing gives 24 dB on low. A manufacturer FAQ says it can reach 49 dB on high.

Can the pre-filter be washed?

The listing describes a washable fabric pre-filter. Manufacturer guidance says to wash it on a gentle cycle with mild detergent.

What voltage does it use?

The model name says 100-120V, while the use note says North America only and specifies 110-120V input. Check the voltage requirement before purchase.