
Levoit Core 300S Smart True HEPA Air Purifier
Air purifiers
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Air purifiers

Air purifiers
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Your starting point
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: 465 sq ft vs 219 sq ft
Levoit Core 300S Smart True HEPA Air Purifier is $100 cheaper. Pay the difference only if cadr matters to you.
The trade-off to know
Check first: the Honeywell HPA300 HEPA Air Purifier has over 55 dB on high. Tick them under deal-breakers if that rules it out.
Look at the differences ↓Side by side
Start with the key specs, then explore as much as you need.
| What you’re comparing | Levoit Core 300S Smart True HEPA Air Purifier | Honeywell HPA300 HEPA Air Purifier |
|---|---|---|
| CADRPerformance | 141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen) | 300 CFM (Smoke), 320 CFM (Dust), 300 CFM (Pollen) |
| Room sizePerformance | Bedrooms, nurseries, home offices up to 219 sq ft (5 ACH) / up to 1,095 sq ft (1 ACH) | Extra large rooms, master suites, open spaces up to 465 sq ft (4.8 ACH) |
| Coverage areaPerformance | 219 sq ft (5 air changes/hr) / 1,095 sq ft (1 air change/hr) | 465 sq ft (4.8 air changes/hr) / 2,250 sq ft (1 air change/hr) |
| Filter typesFilters | 3-Stage filtration: Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon filter | Type A Activated Carbon Pre-filter + 3× Type R True HEPA filters |
| Filter lifeFilters | 6 to 8 months | 3 months (Pre-filter) / 12 months (True HEPA filters) |
Showing 5 of 11 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
Beyond the spec sheet
Explore the ownership details available for this pair.
Levoit Core 300S Smart True HEPA Air Purifier
Honeywell HPA300 HEPA Air Purifier
Physical clearance required for airflow, wall placement, and bedroom noise levels.
Wall Clearance Required
360° intake requires 15 in perimeter clearance from walls
Front grille intake: can back up close to baseboards
Nighttime Sleep Mode Noise
22 dB whisper mode (practically inaudible on nightstand)
30 dB lowest fan speed (noticeable background white noise)
Unit Footprint & Dimensions
Compact cylinder (8.7 × 8.7 × 14.2 in; 5.9 lb)
Large commercial-grade shell (20.8 × 22.3 × 10.8 in; 17.0 lb)
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Levoit: What to watch for
No true HEPA H13 rating on recent replacement filters.
Filter check light does not measure real dirt; it operates on a fixed timer.
Honeywell: What to watch for
Requires periodic filter replacements to maintain airflow and odor capture.
Know what’s behind the comparison
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.
Levoit Core 300S Smart True HEPA Air Purifier costs $100 less at list price.
Honeywell HPA300 HEPA Air Purifier has this deal-breaker: over 55 dB on high. Louder than normal conversation at full speed.
For bedrooms, buy the Levoit Core 300S Smart True HEPA Air Purifier. Leads 2 of 2 rankable bedrooms specs. Noise levels: 22 dB vs 38 dB
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.