Coway
Coway AP-1512HH Mighty
$178Cheaper
Released 2016
Best Air Purifiers · head-to-head
Coway AP-1512HH Mighty vs Alen BreatheSmart 75i
A sourced, side-by-side comparison. Coway AP-1512HH Mighty is cheaper at $178. Every spec and price links to its source.
Alen
Alen BreatheSmart 75i
$799
Which is better: the Coway AP-1512HH Mighty or Alen BreatheSmart 75i?
On the specs we track, they're closely matched. The Coway AP-1512HH Mighty is the cheaper at $178.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Coway AP-1512HH Mighty | Alen BreatheSmart 75i |
|---|---|---|
| US price | $178 | $799 |
| Brand | Coway | Alen |
| Released | 2016 | — |
| Cadr smoke (CFM) | 233 | — |
| Coverage (sq ft) | 360 | 1400 |
| Hepa | Yes | Yes |
| Filter type | Pre-filter + Activated Carbon + True HEPA + Ionizer (switchable) | Advanced Particle filter + Medical-grade True HEPA (H13) + Ionizer (switchable); optional Carbon layer (Fresh/Ultimate filters) |
| Noise db min | 24.4 | 25 |
| Smart | No | Yes |
| Energy star | Yes | Yes |
| Release | 2016 | — |
Sources — Coway AP-1512HH Mighty: breathequality.com (verified 2026-06-15). Alen BreatheSmart 75i: alen.com (verified 2026-07-07).
What's the difference between the Coway AP-1512HH Mighty and Alen BreatheSmart 75i?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Coverage (sq ft): Coway AP-1512HH Mighty 360 vs Alen BreatheSmart 75i 1400
- Filter type: Coway AP-1512HH Mighty Pre-filter + Activated Carbon + True HEPA + Ionizer (switchable) vs Alen BreatheSmart 75i Advanced Particle filter + Medical-grade True HEPA (H13) + Ionizer (switchable); optional Carbon layer (Fresh/Ultimate filters)
- Noise db min: Coway AP-1512HH Mighty 24.4 vs Alen BreatheSmart 75i 25
- Smart: Coway AP-1512HH Mighty false vs Alen BreatheSmart 75i true
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Coway AP-1512HH Mighty
HouseFresh's chamber test rates the Coway AP-1512HH Mighty a strong cleaner — clearing incense smoke in a 728 cu ft lab in 26 minutes at top speed with a 247.7 CFM dust CADR — but flags it as unusually power-hungry (75.3W) and now dated, with better-value rivals available. (1 sourced review, 1 lab-tested.)
Praised: Strong, fast air-cleaning performance (26 min to clear room at top speed) with decent value when the ionizer runs at full speed; Very cheap and widely available OEM/generic replacement filters.
Flagged: Much more power-hungry than similarly performing purifiers (75.3W at Speed 3), raising long-term running cost; Design is dated versus modern units; performance-per-dollar drops sharply without the ionizer and at lower speeds.
Alen BreatheSmart 75i
Two whitelisted hands-on reviews (TechHive 2023, TechRadar 2024) cover this exact model. Both are qualitative with no lab-measured numbers. Both praise the powerful airflow for very large rooms (up to ~1,300 sq ft), the swappable colored front panels, and simple onboard controls that work without the app. Both flag the high price, being overkill for small spaces, loud higher/auto fan speeds, bulk, and an app that is hard to find or unintuitive. They split sharply on setup and framing. (2 sourced reviews.)
Praised: Powerful airflow suited to very large rooms (up to ~1,300 sq ft); Swappable colored front panels to match decor; Simple onboard controls, usable without the app.
Flagged: Very expensive and overkill for small spaces; Gets loud at higher/auto fan speeds; Large, bulky footprint.