1 / 7BLUEAIR Blue Pure 511i Max Air Purifier
The BLUEAIR Blue Pure 511i Max is a compact air purifier for bedrooms, nurseries, home offices, and other small rooms. The listing claims app control, automatic fan adjustment from built-in air-quality sensors, and coverage up to 1,138 sq ft in one hour.
At a glance
- App control includes air-quality monitoring, setting adjustments, and filter replacement reminders.
- Built-in sensors are claimed to raise fan speed automatically when pollution levels rise.
- The listing describes sleep-friendly operation as quiet as 19 dB.
Reference price: $139.99
Price checked: Nov 11, 2026
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Pros and cons
Pros
- App monitoring and automatic fan adjustment offer alternatives to manual-only control.
- The claimed 360° air intake and compact design suit placement in smaller rooms.
Technical specifications
8 specifications| Claimed room coverage | up to 1,138 sq ft in one hour |
|---|---|
| Claimed small-room cleaning time | 237 csq ft in about 12.5 minutes |
| Filtration technology | HEPASilent dual filtration technology |
|---|---|
| Particle capture claim | 99.97% of airborne particles down to 0.1 microns |
| Operating noise claim | as quietly as 19 dB |
| Air-quality sensing | Built-in air quality sensors automatically adjust fan speed when pollution levels rise. |
|---|---|
| App functions | monitor air quality, control settings, and receive filter replacement reminders |
| Air intake | 360° air intake |
What to know before buying
Listing details to confirm
Coverage, cleaning-time, particle-capture and noise figures are manufacturer claims, not independently verified here, the listing's 1,138 sq ft figure is framed as one-hour coverage, while its faster-cleaning claim applies to 237 csq ft.
Who is it for?
Customer reviews on Amazon
- 5 stars
77% 77% - 4 stars
10% 10% - 3 stars
5% 5% - 2 stars
3% 3% - 1 star
5% 5%
The supplied evidence includes an aggregate rating of 4.5 out of 5 stars but no review count or qualitative customer comments. That rating alone does not establish what buyers liked or disliked, or how the purifier performs in a particular room.
Frequently asked questions
What room size does the listing claim it can cover?
It claims coverage up to 1,138 sq ft in one hour and says it cleans 237 csq ft in about 12.5 minutes. These are manufacturer claims.
Can it be controlled from a phone?
Yes. The listing says the Blueair app can monitor air quality, control settings, and provide filter replacement reminders.
Does the purifier adjust itself?
The listing says built-in air-quality sensors automatically adjust fan speed when pollution levels rise.
How quiet is it claimed to be?
The listing describes operation as quiet as 19 dB, it does not specify a particular fan setting for that figure.
Alternative options
Blue Pure 511i Max Filter Replacement for Blueair 511i Max Air Purifier | Fits for Blue Air 511i Max Purifiers, F5MAX Filter(NOT for 511), HEPA & Activated Carbon Air Filter, 2 Pack
$26.99
BLUEAIR Air Purifiers for Home Bedroom Dorm Office up to 907 Ft², Blue 511 | Compact, quiet 24dB HEPASilent filtration, AHAM Verified, Energy Star, Washable Pre-Filter, Captures Pet Hair Allergens Smoke
$74.99
BLUEAIR Air Purifiers for Home Bedroom Dorm up to 1,190 Ft², Signature SP1i | OdorFence Removes Odors, WiFi, Auto Detects Particles & Gases, Swedish Engineered Quiet 19dB & Compact HEPASilent Filtration
$125.99
511i MAX Replacement Filter for BLUEAIR 511i Max HEPASilent Air Cleaner | for Blue Pure F5MAX, Model Blue Pure 511i Max (NOT for 511), 2-pack
$26.99
