Why it matters
The Coway Airmega 350 is a HEPA room unit air purifier that its maker rates for 2,640 sq ft, with a smoke CADR of 352 CFM.
At the usual 4.8 air changes an hour and an 8-foot ceiling, a 2,640-square-foot rating implies about 1,690 cubic feet of clean air a minute. In a 12-by-15-foot bedroom that would turn the air over roughly 70 times an hour.
Filtration: HEPA. Quietest setting, per the maker: 21.5 dB. Power draw: 62 W.
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 Wildfire Smoke, 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 2,640 square feet is one of the largest ratings we cover: 141 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 450: rated room size 2,640 sq ft here vs 3,285 sq ft; smoke CADR 352 CFM here vs 439 CFM; power draw 62 W here vs 72 W.
The listing gives dimensions of 12 x 12 x 23 in and a weight of 17.19 lbs.
Who it's for, and who should skip it
Good fit if
- Rooms up to about 2,640 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 2,640 sq ft
- Smoke CADR 352 CFM
- Low setting 21.5 dB
- 62 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 | $339 | Maker |
|---|---|---|
| Product weight | 17.19 lbs | Maker |
| Dimensions (seller) | 12 x 12 x 23 in | Maker |
| Room coverage | 2,640 sq ft | Maker |
| Wattage | 62 W | Maker |
| Filter type | HEPA | Maker |
| CADR (smoke) | 352 CFM | Retailer |
| Noise (seller) | 21.5 dB | Retailer |
Alternatives worth comparing
More air purifiers we cover
- Yariki P280 Air Purifier
- Nuwave OxyPure ZERO Air Purifier
- Airpura T700/T700DLX Air Purifier (T700 - White) $1,199.98
- Coway Airmega Aim $149.99
- GermGuardian AC3000W Air Purifier
All air purifiers, compared in one table · Every Coway product we cover
Final verdict
A solid choice for rooms up to about 2,640 sq ft. Confirm the model it fits before ordering.
Where to buy
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