Levoit Core 400S vs Coway Airmega 250
Two mid-size purifiers for living rooms.
Affiliate disclosure: PickedHouse is reader-supported. Some links on this page are affiliate links (including Amazon links), and we may earn a commission if you buy through them, at no extra cost to you. As an Amazon Associate, PickedHouse earns from qualifying purchases. Commissions never decide which products we include or how we rank them. How we make money.
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 We have not tested these products hands-on, and we do not publish invented test results, scores or star ratings.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 Levoit Core 400S and Coway Airmega 250 both list 22 dB on low and auto modes. This page is based on manufacturer-published specifications and manuals plus aggregated owner reviews; we did not test the products ourselves.
Short answer
Choose the Levoit for app control and low power. Choose the Coway for more output and a washable pre-filter.
Check Levoit Core 400S price (opens in a new tab)Check Coway Airmega 250 price (opens in a new tab)
Levoit Core 400S vs Coway Airmega 250: specs side by side
| Spec | Levoit Core 400S | Coway Airmega 250 |
|---|---|---|
| CADR | 231 CFM | 261 dust / 249 smoke / 230 pollen CFM |
| Rated room size | 358 ft² (4.8 ACH) | 465 ft² (4 ACH) |
| Filtration | Combined pre-filter, HEPA, carbon | Washable pre-filter plus Max2 (carbon + Green True HEPA) |
| Lowest noise | 22 dB | 22 dB(A) |
| Rated power | 38W | 64W |
| Wi-Fi | Yes | No (250S adds Wi-Fi) |
| Dimensions | 10.8 × 10.8 × 20.5 in | 18.5 × 19.7 × 8.3 in |
| Weight | 11 lb | 20.5 lb |
Pros and cons
Levoit Core 400S: pros
- App
- 38W
- Lighter
Levoit Core 400S: cons
- Lower CADR
Coway Airmega 250: pros
- More output
- Washable pre-filter
Coway Airmega 250: cons
- Heavier
- No Wi-Fi on base model
Who should buy which
Smart features vs output.
Choose the Levoit Core 400S if…
- You want app schedules
- You move it room to room
Choose the Coway Airmega 250 if…
- You want maximum output
- Open living spaces
How we compared
We compared manufacturer-published specifications. See how we research.
Frequently asked questions
Does the Airmega 250 have Wi-Fi?
The 250S version does; the base 250 does not.
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.
Keep reading
Levoit Core 400S review
A quiet, app-connected tower purifier for medium rooms, with one caveat about its CADR figures.
Read the comparison ReviewAir PurifiersCoway Airmega 250 review
A larger Coway for open-plan rooms, with a washable pre-filter.
Read the comparison Best ofAir PurifiersBest air purifier for a living room
Living rooms need more clean-air output than bedrooms.
Read the comparison