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Alen BreatheSmart 75i Large Room Air Purifier 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 $600 less.

Catalog as of September 1, 2026

Why, in numbers

  • CADR: Alen BreatheSmart 75i Large Room Air Purifier lists 350 CFM across Smoke, Dust, Pollen (Alen 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: Alen BreatheSmart 75i Large Room Air Purifier lists 1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) (Alen 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: Alen BreatheSmart 75i Large Room Air Purifier lists Large master suites, open living rooms, offices (Alen 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: Alen BreatheSmart 75i Large Room Air Purifier lists Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon (Alen 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: Alen BreatheSmart 75i Large Room Air Purifier lists 12–15 months extra long filter life (Alen 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.

Alen BreatheSmart 75i Large Room Air Purifier
$7492 spec wins
Swap

Compare a different air purifier

Winix 5500-2 Air Purifier$159Levoit Core 400S$219Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Levoit Core 600S Smart True HEPA$299Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Coway Airmega 400$549Blueair Protect 7470i$649Dyson Purifier Hot+Cool Formaldehyde HP09$799
Levoit Core 300S Smart True HEPA Air Purifier
$1492 spec wins
Swap

Compare a different air purifier

Winix 5500-2 Air Purifier$159Levoit Core 400S$219Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Levoit Core 600S Smart True HEPA$299Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Coway Airmega 400$549Blueair Protect 7470i$649Dyson Purifier Hot+Cool Formaldehyde HP09$799

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 $600 at list price.

Check first: the Levoit Core 300S Smart True HEPA Air Purifier has under 1,000 sq ft coverage.

2 Alen BreatheSmart 75i Large Room Air Purifier4 rankable of 11 specsLevoit Core 300S Smart True HEPA Air Purifier 2

Deal-breakers

tick what would make you walk away

  • row

    Undersized for an open-plan living area.

    Clear:Alen BreatheSmart 75i Large Room Air Purifier · 1,400 sq ftTrips:Levoit Core 300S Smart True HEPA Air Purifier · 219 sq ft
  • row

    Hard to move between rooms.

    Trips:Alen BreatheSmart 75i Large Room Air Purifier · 27.0 lbClear:Levoit Core 300S Smart True HEPA Air Purifier · 5.95 lb

At a glance

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

2 of 2 differ

CADR

Alen

350 CFM across Smoke, Dust, Pollen

Levoit

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

Coverage area

Alen

1,400 sq ft (2 air changes/hr) / 700 sq ft (4 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

Alen BreatheSmart 75i Large Room Air Purifier

Upfront list price$749
3-Yr B6-Pure heavy HEPA filter (Every 12–15 months (~$99/yr))+$297
3-Year Estimated Total$1,046

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.

Alen

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.

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)

The 90-Day Owner Regret Check

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

Post-Purchase Truths

Alen: 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.

Alen BreatheSmart 75i Large Room Air Purifier$7492 wins
Levoit Core 300S Smart True HEPA Air Purifier$1492 wins

Performance

leads 2-0
Performance specifications. Middle column is Alen BreatheSmart 75i Large Room Air Purifier, right column is Levoit Core 300S Smart True HEPA Air Purifier.
CADR350 CFM across Smoke, Dust, Pollen (wins this row: higher)141 CFM / 240 m³/h (Smoke), 140 CFM (Dust), 145 CFM (Pollen)
Room sizeLarge master suites, open living rooms, officesBedrooms, nurseries, home offices up to 219 sq ft (5 ACH) / up to 1,095 sq ft (1 ACH)
Coverage area1,400 sq ft (2 air changes/hr) / 700 sq ft (4 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 Alen BreatheSmart 75i Large Room Air Purifier, right column is Levoit Core 300S Smart True HEPA Air Purifier.
Filter typesMedical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon3-Stage filtration: Pre-filter + H13 True HEPA + High-Efficiency Activated Carbon filter
Filter life12–15 months extra long filter life6 to 8 months

Usability & Smart

leads 1-0
Usability & Smart specifications. Middle column is Alen BreatheSmart 75i Large Room Air Purifier, right column is Levoit Core 300S Smart True HEPA Air Purifier.
Noise levels25 dB (WhisperMax) – 49 dB (Turbo speed)22 dB (Sleep mode) – 48 dB (High speed) (wins this row: lower)
Energy consumption45 W (Energy Star certified)23 W max power (Energy Star Certified)
Smart featuresAlen Air App (Wi-Fi), auto modes, color ring statusVeSync App (iOS/Android), voice control via Amazon Alexa and Google Assistant
Air quality sensorsLaser air quality sensor detecting fine particle levels with 5 color ringsAirSight 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 Alen BreatheSmart 75i Large Room Air Purifier, right column is Levoit Core 300S Smart True HEPA Air Purifier.
Weight27.0 lb (12.2 kg)5.95 lb (2.7 kg) (wins this row: lower)
WarrantyLifetime warranty (with active filter subscription)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.
Alen BreatheSmart 75i Large Room Air Purifier source (opens in a new tab)Levoit Core 300S Smart True HEPA Air Purifier source (opens in a new tab)

Which one should you buy

Pick this one if

Alen BreatheSmart 75i Large Room Air Purifier

Commercial-grade quiet purifier cleaning up to 1,400 sq ft every 30 minutes with a lifetime warranty.

  • 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

What you give up

  • High initial investment
  • Tall tower profile
Full Alen BreatheSmart 75i Large Room Air Purifier 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 25 dB
  • Weight: 5.95 lb vs 27.0 lb
  • It is also $600 cheaper.

Big rooms & allergies

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

For big rooms & allergies, buy the Alen BreatheSmart 75i Large Room Air Purifier.

  • Leads 2 of 2 rankable big rooms & allergies specs.
  • CADR: 350 CFM across Smoke, Dust, Pollen vs 141 CFM / 240 m³/h
  • Coverage area: 1,400 sq ft vs 219 sq ft
  • Levoit Core 300S Smart True HEPA Air Purifier is $600 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: 12–15 months extra long filter life vs 6 to 8 months
  • Energy consumption: 45 W 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.

Alen BreatheSmart 75i Large Room Air Purifier spec sheetLevoit Core 300S Smart True HEPA Air Purifier spec sheet

Manufacturer pages: Alen BreatheSmart 75i Large Room Air Purifier ↗ · Levoit Core 300S Smart True HEPA Air Purifier ↗

Common questions

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.

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