Alen
Alen BreatheSmart 75i Large Room Air Purifier
Air purifiers
$749List price
Explore this product Your shortlist, side by side
Alen BreatheSmart 75i Large Room Air Purifier vs Levoit Core 300S Smart True HEPA Air Purifier
Find the differences that matter for your next decision.
Levoit
Levoit Core 300S Smart True HEPA Air Purifier
Air purifiers
$149List 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 $600 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
Check first: the Levoit Core 300S Smart True HEPA Air Purifier has under 1,000 sq ft coverage.
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 | Alen BreatheSmart 75i Large Room Air Purifier | Levoit Core 300S Smart True HEPA Air Purifier |
|---|---|---|
| CADRPerformance | 350 CFM across Smoke, Dust, Pollen | 141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen) |
| Room sizePerformance | Large master suites, open living rooms, offices | Bedrooms, nurseries, home offices up to 219 sq ft (5 ACH) / up to 1,095 sq ft (1 ACH) |
| Coverage areaPerformance | 1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) | 219 sq ft (5 air changes/hr) / 1,095 sq ft (1 air change/hr) |
| Filter typesFilters | Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon | 3-Stage filtration: Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon filter |
| Filter lifeFilters | 12–15 months extra long filter life | 6 to 8 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.
Alen BreatheSmart 75i Large Room Air Purifier
Reasons to choose it
- Industry-exclusive transferable Lifetime Warranty
- Tuned pink noise frequencies promote deeper sleep on WhisperMax mode
- Medical-grade H13 True HEPA filter lasts up to 15 months
Worth considering
- High initial investment
- Tall tower profile
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)
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
What three years could cost
Alen BreatheSmart 75i Large Room Air Purifier
3-Year Estimated Total$1,046
Levoit Core 300S Smart True HEPA Air Purifier
3-Year Estimated Total$227
Room Placement & Bedroom Noise Check
Physical clearance required for airflow, wall placement, and bedroom noise levels.
Wall Clearance Required
Alen
Requires 12 in perimeter airflow space
Levoit
360° intake requires 15 in perimeter clearance from walls
Nighttime Sleep Mode Noise
Alen
Standard sleep speed
Levoit
22 dB whisper mode (practically inaudible on nightstand)
Unit Footprint & Dimensions
Alen
Standard room purifier footprint
Levoit
Compact cylinder (8.7 × 8.7 × 14.2 in; 5.9 lb)
Everyday ownership notes
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Alen: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
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.
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 Alen BreatheSmart 75i Large Room Air Purifier or the Levoit Core 300S Smart True HEPA Air Purifier?
Levoit Core 300S Smart True HEPA Air Purifier costs $600 less at list price.
What is the biggest catch with the Alen BreatheSmart 75i Large Room Air Purifier or Levoit Core 300S Smart True HEPA Air Purifier?
Levoit Core 300S Smart True HEPA Air Purifier has this deal-breaker: under 1,000 sq ft coverage. Undersized for an open-plan living area.
Which is better for bedrooms, the Alen BreatheSmart 75i Large Room Air Purifier 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 25 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.