Head-to-head · Best Air Purifiers

Blueair Blue Pure 211+ vs Levoit Core 400S

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Blueair Blue Pure 211+ comes out ahead by a narrow margin (4.4 vs 4.2). The gap is mostly about Buyers prioritizing simple operation and customizable aesthetics — read the strengths below before deciding.

Higher ratedRanked #2 in Best Air Purifiers

Blueair Blue Pure 211+

4.4

$319as of Apr 22

The Blueair Blue Pure 211+ is a powerful and stylish air purifier that excels in cleaning large rooms quickly while operating quietly on lower settings. Its simple one-button design and washable pre-filter offer convenience and long-term value, though the unit is heavy and lacks portability features. A significant drawback for some users is the inability to disable the built-in ionizer, and filter costs are notably higher than competitors.

Strengths

— Delivers 350 CFM CADR for dust, smoke, and pollen, effectively cleaning rooms up to 540 sq. ft.
— Operates quietly at 37.2 dB on low speed, which is quieter than a whisper or refrigerator hum.
— Features a washable, customizable fabric pre-filter that captures large particles like pet hair and lint.

Watch-outs

— The built-in ionizer cannot be disabled, which may be a concern for users avoiding ionization technology.
— The unit is bulky and lacks handles or wheels, making it difficult to move between rooms.
— Filter replacement costs are higher compared to other air purifiers with similar performance.

$319 · Check Price on Amazon Full review →

Ranked #3 in Best Air Purifiers

Levoit Core 400S

4.2

$182as of Apr 22

The Levoit Core 400S offers significant improvements over previous models with effective particle removal, smart app integration, and a quiet, space-saving cylindrical design. While it lacks official HEPA certification and has minor discrepancies between claimed and tested noise or power usage, it delivers strong performance for mid-range users in rooms up to 450 sq ft.

Strengths

— Auto mode detected incense smoke and reacted in under 8 minutes
— VeSync app allows remote control and adjustment during pollen spikes
— Cylindrical 360-degree intake design pulls air from all sides effectively

Watch-outs

— Lacks official HEPA certification despite matching medical-grade performance in tests
— Actual noise level on low speed measured at 26 dB rather than the claimed 24 dB
— Energy consumption tested at 48W, slightly higher than the 45W specification

$182 · Check Price on Amazon Full review →

How they stack up

Blueair Blue Pure 211+

The Blueair Blue Pure 211+ stands out with its washable fabric pre-filter and minimalist one-button control, offering a simpler user experience than the app-dependent Coway Airmega 400S or Levoit Core 400S. However, it forces users to accept a built-in ionizer that cannot be disabled, a feature absent in the Coway and Levoit models, and it is less portable than the compact Levoit.

Levoit Core 400S

The Levoit Core 400S offers a compact, 360-degree intake design that is more space-efficient than the bulky Coway Airmega 400S or Blueair Blue Pure 211+. While it matches the Coway in smart app integration, it lacks the official HEPA certification that the Dyson TP07 and Coway possess, and it does not offer the cooling function unique to the Dyson.

Specs side-by-side

Spec	Blueair Blue Pure 211+	Levoit Core 400S
CADR	350 CFM	244 CFM
Room Coverage	540 sq. ft.	400 sq ft (tested up to 450 sq ft)
Noise Level	37.2 dB	24–26 dB
Filtration System	HEPASilent + Ionizer	Pre-filter, Main Filter, Activated Carbon
Dimensions	20H x 13W x 13D inches	20.5 x 11 inches
Weight	12.98 lbs	10.5 lbs
Power Consumption	54.5 watts	45–48 W
Filter Lifespan	6-8 months	6–8 months

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