Head to head

Blueair Blue Pure 211+ Auto vs Levoit Core 300S Smart True HEPA Air Purifier

They split the 4 rankable specs evenly, so cost decides it: Levoit Core 300S Smart True HEPA Air Purifier costs $190 less.

Catalog as of September 1, 2026

Why, in numbers

CADR: Blueair Blue Pure 211+ Auto lists 353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) (Blueair sheet, 2026-09-02); Levoit Core 300S Smart True HEPA Air Purifier lists 141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen) (Levoit sheet, 2026-09-02).
Coverage area: Blueair Blue Pure 211+ Auto lists 550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) (Blueair sheet, 2026-09-02); Levoit Core 300S Smart True HEPA Air Purifier lists 219 sq ft (5 air changes/hr) / 1,095 sq ft (1 air change/hr) (Levoit sheet, 2026-09-02).
Room size: Blueair Blue Pure 211+ Auto lists Large living rooms, open floor plans, master suites (Blueair sheet, 2026-09-02); Levoit Core 300S Smart True HEPA Air Purifier lists Bedrooms, nurseries, home offices up to 219 sq ft (5 ACH) / up to 1,095 sq ft (1 ACH) (Levoit sheet, 2026-09-02).
Filter types: Blueair Blue Pure 211+ Auto lists Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon) (Blueair sheet, 2026-09-02); Levoit Core 300S Smart True HEPA Air Purifier lists 3-Stage filtration: Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon filter (Levoit sheet, 2026-09-02).
Filter life: Blueair Blue Pure 211+ Auto lists 6 months (Blueair sheet, 2026-09-02); Levoit Core 300S Smart True HEPA Air Purifier lists 6 to 8 months (Levoit sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Blueair Blue Pure 211+ Auto

$3392 spec wins

Swap

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Winix 5500-2 Air Purifier$159 Levoit Core 400S$219 Coway Airmega AP-1512HH Mighty$229 Blueair Blue Pure 311i Max$229 Honeywell HPA300 HEPA Air Purifier$249 Levoit Core 600S Smart True HEPA$299 Coway Airmega 250$399 Coway Airmega 400$549 Blueair Protect 7470i$649 Alen BreatheSmart 75i Large Room Air Purifier$749 Dyson Purifier Hot+Cool Formaldehyde HP09$799

Levoit Core 300S Smart True HEPA Air Purifier

$1492 spec wins

Swap

Compare a different air purifier

Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your air purifier.

Straight answer

Overall: 2 to 2

Tied overall. Levoit Core 300S Smart True HEPA Air Purifier is cheaper.

The 4 rankable overall specs split 2 to 2.
Saves $190 at list price.

2 Blueair Blue Pure 211+ Auto4 rankable of 11 specsLevoit Core 300S Smart True HEPA Air Purifier 2

Deal-breakers

tick what would make you walk away

No Wi-Fi approw
No schedules or remote control from your phone.
Trips:Blueair Blue Pure 211+ Auto · One-touch Auto ModeClear:Levoit Core 300S Smart True HEPA Air Purifier · VeSync App
Over 55 dB on highrow
Louder than normal conversation at full speed.
Trips:Blueair Blue Pure 211+ Auto · 23 dB (Low) – 56 dB (Turbo high)Clear:Levoit Core 300S Smart True HEPA Air Purifier · 22 dB (Sleep mode) – 48 dB (High speed)
Under 1,000 sq ft coveragerow
Undersized for an open-plan living area.
Trips:Blueair Blue Pure 211+ Auto · 550 sq ftTrips:Levoit Core 300S Smart True HEPA Air Purifier · 219 sq ft

At a glance

The handful of numbers that decide most purchases in this category.

2 of 2 differ

CADR

Blueair

353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen)

Levoit

141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen)

Coverage area

Blueair

550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr)

Levoit

219 sq ft (5 air changes/hr) / 1,095 sq ft (1 air change/hr)

True 3-Year Cost of Ownership (TCO)

Upfront price + 3 years of consumables, fees & essential add-ons

Blueair Blue Pure 211+ Auto

Upfront list price$339

3-Yr Foldable Particle+Carbon filter (Every 6 months (~$45/yr))+$135

3-Year Estimated Total$474

Levoit Core 300S Smart True HEPA Air Purifier

Upfront list price$149

3-Yr Replacement filter (Every 6–8 months (~$26/yr))+$78

3-Year Estimated Total$227

Room Placement & Bedroom Noise Check

Physical clearance required for airflow, wall placement, and bedroom noise levels.

Ergonomic & Spatial Check

Wall Clearance Required

Cylindrical 360° filters cannot sit flush against walls without choking intake.

Blueair

Requires 12 in perimeter airflow space

Levoit

360° intake requires 15 in perimeter clearance from walls

Nighttime Sleep Mode Noise

Levels below 25 dB are virtually silent for light sleepers.

Blueair

Standard sleep speed

Levoit

22 dB whisper mode (practically inaudible on nightstand)

Unit Footprint & Dimensions

Blueair

Standard room purifier footprint

Levoit

Compact cylinder (8.7 × 8.7 × 14.2 in; 5.9 lb)

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Blueair: What to watch for

Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Levoit: What to watch for

Hardware Quirk
No true HEPA H13 rating on recent replacement filters.
Due to US regulatory naming updates, Levoit adjusted terminology from "True HEPA" to "HEPASmart" on several retail filter packs.
Maintenance
Filter check light does not measure real dirt; it operates on a fixed timer.
The filter replacement alert triggers every 6 months regardless of whether your room was smoky or pristine, requiring manual reset.

Blueair Blue Pure 211+ Auto$3392 wins

Levoit Core 300S Smart True HEPA Air Purifier$1492 wins

Performance Filters Usability & Smart Design & Ownership

11 of 11 attributes differ. Identical rows are dimmed.

Performance

leads 2-0

Performance specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Levoit Core 300S Smart True HEPA Air Purifier.
CADR	353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) (wins this row: higher)	141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen)
Room size	Large living rooms, open floor plans, master suites	Bedrooms, nurseries, home offices up to 219 sq ft (5 ACH) / up to 1,095 sq ft (1 ACH)
Coverage area	550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) (wins this row: higher)	219 sq ft (5 air changes/hr) / 1,095 sq ft (1 air change/hr)

Filters

2 differences

Filters specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Levoit Core 300S Smart True HEPA Air Purifier.
Filter types	Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon)	3-Stage filtration: Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon filter
Filter life	6 months	6 to 8 months

Usability & Smart

leads 1-0

Usability & Smart specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Levoit Core 300S Smart True HEPA Air Purifier.
Noise levels	23 dB (Low) – 56 dB (Turbo high)	22 dB (Sleep mode) – 48 dB (High speed) (wins this row: lower)
Energy consumption	38 W max power consumption	23 W max power (Energy Star Certified)
Smart features	One-touch Auto Mode (no Wi-Fi app)	VeSync App (iOS/Android), voice control via Amazon Alexa and Google Assistant
Air quality sensors	Integrated particle sensor with 3-color air quality LED indicator	AirSight Plus Laser Dust Sensor (real-time PM2.5 with 4-color air quality ring)

Design & Ownership

leads 1-0

Design & Ownership specifications. Middle column is Blueair Blue Pure 211+ Auto, right column is Levoit Core 300S Smart True HEPA Air Purifier.
Weight	12.5 lb (5.7 kg)	5.95 lb (2.7 kg) (wins this row: lower)
Warranty	2 years (with product registration)	2 years limited warranty (with registration)

Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.

Blueair Blue Pure 211+ Auto source Levoit Core 300S Smart True HEPA Air Purifier source

Which one should you buy

Pick this one if

Blueair Blue Pure 211+ Auto

High-capacity large-room air purifier with 360-degree HEPASilent filtration and machine-washable fabric pre-filters.

High 353 CFM CADR cleans a 550 sq ft living room in just 12.5 minutes
HEPASilent electrostatic + mechanical filtration maximizes airflow and efficiency
Interchangeable washable fabric pre-filters in multiple designer colors

What you give up

No mobile app or Wi-Fi schedule controls (one-button operation)
Reaches 56 dB at highest turbo fan setting

Full Blueair Blue Pure 211+ Auto specs →

Pick this one if

Levoit Core 300S Smart True HEPA Air Purifier

Compact smart air purifier with 3-stage True HEPA H13 filtration, VortexAir technology, and VeSync app smart control.

Whisper-quiet 22dB Sleep Mode
Compact footprint ideal for bedrooms and home offices
Full smart app control and Alexa/Google voice integration

What you give up

Designed for smaller to medium rooms (up to 219 sq ft for 5 ACH)
Laser dust sensor only measures PM2.5 (no VOC / gas sensor)

Full Levoit Core 300S Smart True HEPA Air Purifier specs →

Best for each use

Bedrooms

Quiet nights: low-speed noise, sleep mode, schedules from your phone

For bedrooms, buy the Levoit Core 300S Smart True HEPA Air Purifier.

Leads 2 of 2 rankable bedrooms specs.
Noise levels: 22 dB vs 23 dB
Weight: 5.95 lb vs 12.5 lb
It is also $190 cheaper.

Big rooms & allergies

Open-plan rooms or allergies: CADR, coverage, filter grade

For big rooms & allergies, buy the Blueair Blue Pure 211+ Auto.

Leads 2 of 2 rankable big rooms & allergies specs.
CADR: 353 CFM vs 141 CFM / 240 m³/h
Coverage area: 550 sq ft vs 219 sq ft
Levoit Core 300S Smart True HEPA Air Purifier is $190 cheaper. Pay the difference only if cadr matters to you.

Low running cost

Cheap to own: filter life, power draw, warranty

Too close to call on low running cost from the spec sheets.

Filter life: 6 months vs 6 to 8 months
Energy consumption: 38 W max power consumption vs 23 W max power

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Blueair Blue Pure 211+ Auto spec sheet Levoit Core 300S Smart True HEPA Air Purifier spec sheet

Manufacturer pages: Blueair Blue Pure 211+ Auto ↗ · Levoit Core 300S Smart True HEPA Air Purifier ↗

Common questions

Which is cheaper, the Blueair Blue Pure 211+ Auto or the Levoit Core 300S Smart True HEPA Air Purifier?

Levoit Core 300S Smart True HEPA Air Purifier costs $190 less at list price.

What is the biggest catch with the Blueair Blue Pure 211+ Auto or Levoit Core 300S Smart True HEPA Air Purifier?

Blueair Blue Pure 211+ Auto has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.

Which is better for bedrooms, the Blueair Blue Pure 211+ Auto or the Levoit Core 300S Smart True HEPA Air Purifier?

For bedrooms, buy the Levoit Core 300S Smart True HEPA Air Purifier. Leads 2 of 2 rankable bedrooms specs. Noise levels: 22 dB vs 23 dB

What cannot be compared from spec sheets?

Of the 11 specs tracked here, 7 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.

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