Compare detailed specifications, side-by-side differences, verified user reviews, and buying recommendations to help you make the right choice.
Deciding between the Winix AM90 and the Coway Airmega 400 depends on your available space, storage capacity goals, and everyday usage style:
Designed for large households, bulk grocery shoppers, and long-term storage where total cubic feet is the highest priority.
Ideal for apartments, offices, dorms, or secondary kitchen use where space efficiency and neat organization are paramount.
| Specification | Winix AM90 | Coway Airmega 400 |
|---|---|---|
| General | ||
| Noise Level | 27 | 22 |
| Number Of Cleaning Stages | 4 | 4 |
| Number Of Air Filters | 3 | 1 |
| Filtered Or Filterless | Filtered | Filtered |
| Features | ||
| HEPA Filter | Yes | Yes |
| Portable | Yes | Yes |
| Others | 360sq ft Room Capacity, Amazon Alexa and Dash Replenishment Enabled | True HEPA Air Purifier with Smart Technology, Covers 1,560 sq. ft, Eco Mdoe |
| Remove | airborne pollutants; dust mites, pet dander, pollen and other allergens as small as 0. 3 microns | Bacteria, Dust, Mold, Odors, Particulates, Pollen, Viruses |
| Timer | — | Yes |
| Physical | ||
| Weight (lbs) | 16.5 | 24.7 |
| Lenth (inch) | 15.1 | 14.8 |
| Height (inch) | 23.5 | 22.8 |
| Width (inch) | 8.7 | 14.8 |
| Cadr (clean Air Delivery Rate) | ||
| Smoke (CFM) | 230 | 350 |
| Pollen (CFM) | 240 | 400 |
| Dust (CFM) | 233 | 350 |
The main differences center around storage capacity, form factor, and convenience. The Winix AM90 provides extensive bulk storage capacity best suited for homes, garages, or basements needing deep freeze space. In contrast, the Coway Airmega 400 offers a compact upright design that fits into smaller spaces with convenient shelf organization.
Chest-style freezers generally excel in thermal efficiency because cold air naturally settles at the bottom and does not escape when the lid is lifted. Compact upright models have lower total kilowatt-hour usage simply due to their smaller cubic volume, making both designs efficient for their respective intended purposes.
Both products are available through official brand stores and authorized retailers with full manufacturer warranties and fast delivery options. Click the "Check Best Price" buttons in the comparison cards above to view today's latest promotions, official deals, and current availability.
Measure your available floor clearance first. If you have open space in a garage, basement, or utility room and want to freeze items in bulk, choose the Winix AM90. If you have limited room in a kitchen, apartment, dorm, or office and prefer easy eye-level access to items, choose the Coway Airmega 400.