Mila Air 3 vs Coway AP-1512HH Mighty
Quick take: The Coway AP-1512HH Mighty costs $229 less; the Mila Air 3 moves more air (263 CADR); the Coway AP-1512HH Mighty costs about $108 less per year in filters — over five years that often outweighs the sticker gap; the Coway AP-1512HH Mighty includes an ionizer — some buyers avoid these (see its cons for the ozone note).
| Spec | Mila Air 3 | Coway AP-1512HH Mighty |
|---|---|---|
| Price | ~$399 | ~$170 |
| Rating | — | — |
| Type | Large Room | Large Room |
| CADR (smoke) | 263 CFM | 233 CFM |
| Honest Coverage (AHAM) | ~408 sq ft | ~361 sq ft |
| Claimed Coverage | 1,000 sq ft | 874 sq ft |
| Noise (sleep) | 23 dB | 24 dB |
| Noise (max) | 50 dB | 54 dB |
| Filter Cost / Year | $158 | $50 |
| Filter | Swappable H12-H14 HEPA + activated carbon (7 filter options) | True HEPA + activated carbon |
| Filter Life | 6 mo | 12 mo |
| Max Power | 38W · Energy Star | 77W · Energy Star |
| Auto Mode | Sensor + auto | Sensor + auto |
| Ionizer | None | Yes |
| WiFi Control | Built-in | None |
| Weight | 18 lbs | 12.3 lbs |
| Maintenance | Filters last 6 months and cost $59 (Basic Breather) to $99 (Overreactor) each — $118 to $198 a year, with the popular pet-focused Critter Cuddler at ~$158/year. Here's the subscription catch: the unit costs $449 standalone but $399 bundled with the auto-refill plan, and the warranty is 2 years without a subscription versus 5 years of coverage with one. You can cancel anytime and filters are sold one-off with no DRM chip, but Mila has deliberately priced loyalty into both the hardware and the warranty. | The front panel pops off without tools; vacuum the washable pre-filter every 2-4 weeks. The carbon filter is replaced every 6 months and the True HEPA annually, and OEM filters are cheap and everywhere — a full year of genuine filters runs about $50, with quality third-party options under $35. Wipe the particle sensor lens (right side, behind a small door) every couple of months or auto mode gets lazy. No app, no subscription, no DRM chips on filters. |
| Warranty | 2 years (5 years with active filter subscription) | 3 years |
Pros & cons
Mila Air 3
- ✓Best-in-class app and automation — Automagic mode with sleep, away, and housekeeping behaviors that actually work
- ✓CO2 and carbon monoxide sensing included, which almost no competitor offers
- ✓Publishes per-filter CADR numbers, including the unflattering ones — rare honesty
- ✓Air 3 is ~16% quieter than the original with a 23 dB sleep floor
- ✓Filter menu lets allergy, pet, and VOC households tune the machine to their problem
- ✓Energy Star certified with sub-0.5W standby
- ✓4.6-star Amazon average, sold at Home Depot and Best Buy too
- ✗$118-198/year in 6-month filters — subscription-tier running costs
- ✗5-year warranty and $50 hardware discount are both contingent on the auto-refill subscription
- ✗Carbon-heavy filters cut CADR to ~150 CFM — pick the Overreactor and you've bought a small-room purifier
- ✗Original Mila measured just 140 CFM smoke CADR at HouseFresh; a Levoit Core 400S cleans faster for half the money
- ✗Claimed 1,000 sq ft coverage relies on a 2 ACH assumption — honest coverage is ~400 sq ft
Coway AP-1512HH Mighty
- ✓AHAM-verified performance that matches purifiers costing twice as much
- ✓Very quiet 24 dB lowest speed — fine for light sleepers
- ✓Cheap filters (~$50/yr OEM, less third-party) available everywhere
- ✓Eco mode stops the fan when air is clean, cutting power use to near zero
- ✓3-year warranty beats Winix and Levoit
- ✓Ionizer is fully switchable and off by default
- ✓Light (12.3 lbs) with a simple pop-off front panel
- ✓Constant sale pricing — routinely dips to $140-150
- ✗Dust sensor is dated and reacts slower than newer rivals
- ✗No Wi-Fi or app on this model
- ✗Air-quality ring is bright at night and lamp-off is manual
- ✗54 dB on high is noticeable in a bedroom
- ✗874 sq ft marketing claim is a 1-ACH number — real coverage is 361 sq ft
- ✗Design is functional but plasticky next to a Blueair