Coway Airmega 250 review
A larger Coway for open-plan rooms, with a washable pre-filter.
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How this page was made: our picks are based on manufacturer specifications (product pages, manuals and spec sheets, all linked below) and aggregated owner reviews. We have not tested these products hands-on, and we do not publish invented test results, scores or star ratings. Read our methodology.
The Coway Airmega 250 (AP-1720H) lists a 261 CFM dust CADR and is rated for 465 ft² at 4 ACH. This page is based on manufacturer-published specifications and manuals plus aggregated owner reviews; we did not test the products ourselves.
Our verdict
For open-plan living spaces or homes with pets, the Airmega 250 offers more output than the Mighty in a slim, flat body. If you want Wi-Fi, the 250S version adds it.
Coway Airmega 250 key specs
| Spec | Coway Airmega 250 |
|---|---|
| CADR | 249 smoke / 261 dust / 230 pollen CFM |
| Rated room size | 465 ft² at 4 ACH; 930 ft² at 2 ACH |
| Filtration | Washable pre-filter plus Max2 filter (activated carbon + Green True HEPA) |
| Noise range | 22–54 dB(A) |
| Rated power | 64W |
| Modes | Smart (Auto, Sleep, Eco) and Rapid; 250S adds Wi-Fi |
| Dimensions | 18.5 × 19.7 × 8.3 in |
| Weight | 20.5 lb |
Pros and cons
Pros
- 261 CFM dust CADR
- Washable pre-filter
- Smart auto mode
- Quiet 22 dB low
Cons
- 20.5 lb
- Room size quoted at 4 ACH, not 4.8
- No Wi-Fi on the base model
Who it suits (and who it doesn't)
Good fit
- Open-plan rooms
- Pet hair (washable pre-filter)
- Buyers who want auto mode
Look elsewhere if
- Small bedrooms
- Buyers who want Wi-Fi on the base model
- People who move a purifier between rooms often (20.5 lb)
What to know before you buy
- Room ratings: Coway quotes 4 and 2 ACH, not the 4.8 ACH many brands use.
Frequently asked questions
Does the Airmega 250 have Wi-Fi?
Not the base model; the 250S does.
What room size is it rated for?
465 ft² at 4 ACH.
Did you test it?
No. This page uses manufacturer specifications and aggregated owner reviews. See how we research.
Sources
Specifications were checked against the manufacturer pages, manuals and spec sheets below in October 2026. Makers revise specs and sell regional variants, so confirm the exact model number before you buy. We do not list prices because they change daily; use the retailer link to see the current price.
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