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 Coway Airmega AP-1512HH Mighty
Find the differences that matter for your next decision.
Coway
Coway Airmega AP-1512HH Mighty
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
Buy the Alen BreatheSmart 75i Large Room Air Purifier.
- Leads 3 of 5 rankable overall specs; Coway Airmega AP-1512HH Mighty takes 2.
- CADR: 350 CFM across Smoke, Dust, Pollen vs 233 CFM
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: 1,400 sq ft vs 361 sq ft
Coway Airmega AP-1512HH Mighty is $520 cheaper. Pay the difference only if cadr matters to you.
The trade-off to know
Check first: the Alen BreatheSmart 75i Large Room Air Purifier weighs over 25 lb (11 kg). 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 | Alen BreatheSmart 75i Large Room Air Purifier | Coway Airmega AP-1512HH Mighty |
|---|---|---|
| CADRPerformance | 350 CFM across Smoke, Dust, Pollen | 233 CFM (Smoke), 246 CFM (Dust), 240 CFM (Pollen) |
| Room sizePerformance | Large master suites, open living rooms, offices | Bedrooms, home offices, medium living rooms |
| Coverage areaPerformance | 1,400 sq ft (2 air changes/hr) / 700 sq ft (4 air changes/hr) | 361 sq ft (4.8 air changes/hr) / 874 sq ft (2 air changes/hr) |
| Filter typesFilters | Medical-grade H13 True HEPA + Antimicrobial layer + Heavy Odor Carbon | 4-Stage: Washable Pre-filter + Deodorization Carbon + True HEPA + Vital Ion |
| Filter lifeFilters | 12–15 months extra long filter life | 12 months (True HEPA) / 6 months (Carbon) |
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
Coway Airmega AP-1512HH Mighty
Reasons to choose it
- High smoke and particulate filtration efficiency in a compact footprint
- Eco Mode powers off fan automatically after 30 minutes of clean air
- Washable pre-filter extends the life of internal carbon and HEPA filters
Worth considering
- No Wi-Fi connectivity or mobile smartphone app
- Ionizer feature produces trace ozone if left enabled
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
Coway Airmega AP-1512HH Mighty
3-Year Estimated Total$319
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
Coway
Front-intake design: can sit almost flush against walls (leaves floor space open)
Nighttime Sleep Mode Noise
Alen
Standard sleep speed
Coway
24.4 dB lowest speed (vital ionizer can be toggled off)
Unit Footprint & Dimensions
Alen
Standard room purifier footprint
Coway
Boxy square unit (16.8 × 18.3 × 9.6 in; 12.3 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.
Coway: What to watch for
- Hardware Quirk
Ionizer ("Vital Ion") produces negligible ozone and should be disabled.
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 Coway Airmega AP-1512HH Mighty?
Coway Airmega AP-1512HH Mighty costs $520 less at list price.
What is the biggest catch with the Alen BreatheSmart 75i Large Room Air Purifier or Coway Airmega AP-1512HH Mighty?
Coway Airmega AP-1512HH Mighty has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.
Which is better for bedrooms, the Alen BreatheSmart 75i Large Room Air Purifier or the Coway Airmega AP-1512HH Mighty?
For bedrooms, buy the Coway Airmega AP-1512HH Mighty. Leads 2 of 2 rankable bedrooms specs. Noise levels: 24 dB vs 25 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.