Levoit
Levoit Core 400S
Air purifiers
$219List price
Explore this product Your shortlist, side by side
Levoit Core 400S vs Blueair Blue Pure 211+ Auto
Find the differences that matter for your next decision.
Blueair
Blueair Blue Pure 211+ Auto
Air purifiers
$339List price
Explore this product What matters most to you?
Start with all rankable specifications, or focus on a particular use.
Your starting point
Buy the Blueair Blue Pure 211+ Auto.
- Leads 4 of 5 rankable overall specs; Levoit Core 400S takes 1.
- CADR: 353 CFM vs 260 CFM / 442 m³/h
How we reached this
We compare the published specifications relevant to your priority. Each rankable specification counts once; your selected requirements can rule a product out. This is a guide to the numbers, not a laboratory performance score.
Coverage area: 550 sq ft vs 403 sq ft
Levoit Core 400S is $120 cheaper. Pay the difference only if cadr matters to you.
The trade-off to know
Check first: the Blueair Blue Pure 211+ Auto has no Wi-Fi app. the Blueair Blue Pure 211+ Auto has over 55 dB on high. Tick them under deal-breakers if that rules it out.
Look at the differences ↓Refine your requirements
What would rule one out?
Side by side
The differences, in detail.
Start with the key specs, then explore as much as you need.
| What you’re comparing | Levoit Core 400S | Blueair Blue Pure 211+ Auto |
|---|---|---|
| CADRPerformance | 260 CFM / 442 m³/h (Smoke), 260 CFM (Dust), 260 CFM (Pollen) | 353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) |
| Room sizePerformance | Bedrooms, apartments, mid-size living spaces | Large living rooms, open floor plans, master suites |
| Coverage areaPerformance | 403 sq ft (5 air changes/hr) / 990 sq ft (2 air changes/hr) | 550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) |
| Filter typesFilters | 3-Stage: Nylon Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon | Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon) |
| Filter lifeFilters | 6–12 months | 6 months |
Showing 5 of 11 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
What you gain. What you give up.
Levoit Core 400S
Reasons to choose it
- Whisper-quiet 24 dB sleep mode with completely dimmable light display
- AirSight Plus laser sensor provides real-time PM2.5 numerical readings
- VeSync smartphone app with scheduling, filter life tracking, and voice control
Worth considering
- Coverage is sized for medium bedrooms and living rooms (under 1,000 sq ft)
- Activated carbon layer is a coated sheet rather than heavy pellet bed
Blueair Blue Pure 211+ Auto
Reasons to choose it
- 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
Worth considering
- No mobile app or Wi-Fi schedule controls (one-button operation)
- Reaches 56 dB at highest turbo fan setting
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
What three years could cost
Levoit Core 400S
3-Year Estimated Total$354
Blueair Blue Pure 211+ Auto
3-Year Estimated Total$474
Room Placement & Bedroom Noise Check
Physical clearance required for airflow, wall placement, and bedroom noise levels.
Wall Clearance Required
Levoit
360° intake requires 15 in perimeter clearance from walls
Blueair
Requires 12 in perimeter airflow space
Nighttime Sleep Mode Noise
Levoit
24 dB quiet sleep mode
Blueair
Standard sleep speed
Unit Footprint & Dimensions
Levoit
Mid-sized cylinder (10.8 × 10.8 × 20.5 in; 11.0 lb)
Blueair
Standard room purifier footprint
Everyday ownership notes
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Levoit: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Blueair: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Know what’s behind the comparison
Published specs. Visible sources.
Clinchmark compares manufacturer specifications and other published information. We have not independently lab-tested these products. Editorial assessments and unknown values are identified in the specification details.
Catalog snapshot: September 1, 2026. Prices, availability, and provider terms can change.
Still weighing it up?
Which is cheaper, the Levoit Core 400S or the Blueair Blue Pure 211+ Auto?
Levoit Core 400S costs $120 less at list price.
What is the biggest catch with the Levoit Core 400S or Blueair Blue Pure 211+ Auto?
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 Levoit Core 400S or the Blueair Blue Pure 211+ Auto?
For bedrooms, buy the Blueair Blue Pure 211+ Auto. Leads 2 of 2 rankable bedrooms specs. Noise levels: 23 dB vs 24 dB
What cannot be compared from spec sheets?
Of the 11 specs tracked here, 6 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.