Levoit
Levoit Core 300S Smart True HEPA Air Purifier
Air purifiers
$149List price
Explore this product Your shortlist, side by side
Levoit Core 300S Smart True HEPA Air Purifier vs Blueair Blue Pure 311i Max
Find the differences that matter for your next decision.
Blueair
Blueair Blue Pure 311i Max
Air purifiers
$229List price
Explore this product What matters most to you?
Start with all rankable specifications, or focus on a particular use.
Your starting point
Tied overall. Levoit Core 300S Smart True HEPA Air Purifier is cheaper.
- The 4 rankable overall specs split 2 to 2.
- Saves $80 at list price.
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.
The trade-off to know
Levoit Core 300S Smart True HEPA Air Purifier: Designed for smaller to medium rooms (up to 219 sq ft for 5 ACH)
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 300S Smart True HEPA Air Purifier | Blueair Blue Pure 311i Max |
|---|---|---|
| CADRPerformance | 141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen) | 250 CFM (Smoke), 250 CFM (Dust), 250 CFM (Pollen) |
| Room sizePerformance | Bedrooms, nurseries, home offices up to 219 sq ft (5 ACH) / up to 1,095 sq ft (1 ACH) | Medium to large bedrooms, living rooms, and open offices up to 387 sq ft (4.8 ACH) / 929 sq ft (2 ACH) |
| Coverage areaPerformance | 219 sq ft (5 air changes/hr) / 1,095 sq ft (1 air change/hr) | 387 sq ft (4.8 air changes/hr) / 929 sq ft (2 air changes/hr) |
| Filter typesFilters | 3-Stage filtration: Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon filter | HEPASilent Main Particle + Carbon filter with customizable machine-washable fabric pre-filter |
| Filter lifeFilters | 6 to 8 months | 6 to 9 months (tracked by RealTrack algorithm in app) |
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 300S Smart True HEPA Air Purifier
Reasons to choose it
- Whisper-quiet 22dB Sleep Mode
- Compact footprint ideal for bedrooms and home offices
- Full smart app control and Alexa/Google voice integration
Worth considering
- 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)
Blueair Blue Pure 311i Max
Reasons to choose it
- HEPASilent dual filtration combines electrostatic and mechanical filtration for faster airflow at lower noise
- Cleans up to 387 sq ft in 12.5 minutes (4.8 ACH) / up to 929 sq ft in 30 minutes (2 ACH)
- Ultra-quiet 23dB Night Mode with Energy Star certified low electricity draw
Worth considering
- Fabric pre-filter covers the exterior and requires periodic vacuuming/washing
- Filter replacements needed every 6 to 9 months
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
What three years could cost
Levoit Core 300S Smart True HEPA Air Purifier
3-Year Estimated Total$227
Blueair Blue Pure 311i Max
3-Year Estimated Total$334
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
360° fabric pre-filter intake (needs 12 in wall space)
Nighttime Sleep Mode Noise
Levoit
22 dB whisper mode (practically inaudible on nightstand)
Blueair
23 dB lowest speed setting
Unit Footprint & Dimensions
Levoit
Compact cylinder (8.7 × 8.7 × 14.2 in; 5.9 lb)
Blueair
Cylindrical aesthetic (12.4 × 12.4 × 18.9 in; 7.8 lb)
Everyday ownership notes
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Levoit: What to watch for
- Hardware Quirk
No true HEPA H13 rating on recent replacement filters.
- Maintenance
Filter check light does not measure real dirt; it operates on a fixed timer.
Blueair: What to watch for
- Maintenance
Outer fabric pre-filter attracts visible pet fur and lint.
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 300S Smart True HEPA Air Purifier or the Blueair Blue Pure 311i Max?
Levoit Core 300S Smart True HEPA Air Purifier costs $80 less at list price.
What is the biggest catch with the Levoit Core 300S Smart True HEPA Air Purifier or Blueair Blue Pure 311i Max?
Both has this deal-breaker: under 1,000 sq ft coverage. Undersized for an open-plan living area.
Which is better for bedrooms, the Levoit Core 300S Smart True HEPA Air Purifier or the Blueair Blue Pure 311i Max?
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.
A few other possibilities.
Alen BreatheSmart 75i Large Room Air Purifier vs Blueair Blue Pure 311i Max ↗Alen BreatheSmart 75i Large Room Air Purifier vs Levoit Core 300S Smart True HEPA Air Purifier ↗Blueair Blue Pure 211+ Auto vs Blueair Blue Pure 311i Max ↗Blueair Blue Pure 211+ Auto vs Levoit Core 300S Smart True HEPA Air Purifier ↗