Why it matters
The Coway Airmega 250S is a HEPA room unit air purifier that its maker rates for 1,860 sq ft.
At the usual 4.8 air changes an hour and an 8-foot ceiling, a 1,860-square-foot rating implies about 1,190 cubic feet of clean air a minute. In a 12-by-15-foot bedroom that would turn the air over roughly 50 times an hour.
Filtration: HEPA. Quietest setting, per the maker: 22 dB. Power draw: 64 W.
The listing names app control.
Price-wise it sat in the dearest third of the 74 hepa room unit models we cover when we checked; the button shows today's price.
It qualifies for our lists Best Air Purifiers for Large Living Rooms, Best Air Purifiers for Home Offices, where it is ranked against every model that meets the same rule.
Its rated room size of 1,860 square feet is above the middle of the range we cover: 108 of the 152 purifiers with a stated figure come in lower, and the range runs from 62 square feet to 4,800 square feet.
Compared with the Coway Airmega 250: rated room size 1,860 sq ft here vs 930 sq ft.
The listing gives dimensions of 18.5 x 19.7 x 8.3 in and a weight of 20.5 lb.
Who it's for, and who should skip it
Good fit if
- Rooms up to about 1,860 sq ft
- Large open rooms
Look elsewhere if
- Whole-home filtration on its own
- Removing gases without a substantial carbon stage
Pros and cons
Pros
- Rated for 1,860 sq ft
- Low setting 22 dB
- 64 W draw
Cons
- Filters are an ongoing cost
- Size to the room at 4.8 air changes per hour
Limitations to weigh
- Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.
Specifications
The bracket shows where each figure comes from.
| Price | $449 | Maker |
|---|---|---|
| Product weight | 20.5 lb | Maker |
| Dimensions (seller) | 18.5 x 19.7 x 8.3 in | Maker |
| Room coverage | 1,860 sq ft | Maker |
| Wattage | 64 W | Maker |
| Filter type | HEPA | Maker |
| Noise (seller) | 22 dB | Retailer |
Alternatives worth comparing
More air purifiers we cover
- Honeywell HPA5200B Air Purifier
- Amaircare 3000 HEPA Air Purifier (07-A-1KWP-06) $689
- Dyson Purifier Hot+Cool HP07 Air Purifier
- Dyson Hushjet Compact Air Purifier
- Blueair Blue Pure 511i Max $139.99
All air purifiers, compared in one table · Every Coway product we cover
Final verdict
A practical choice for rooms up to about 1,860 sq ft. Confirm the model it fits before ordering.
Where to buy
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