Coway Airmega 100 vs 150 vs 200M vs 250: Which Tower Purifier Fits Your Room?
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The short answer: The Airmega 200M is the best all-round pick: it delivers 246 CADR and 1,748 sq ft of coverage for $229.99, just $40 more than the Airmega 150 and $100 more than the Airmega 100. Pick the Airmega 100 if you want the lowest price and a compact 6.6 lb body, or the Airmega 250 if you need the highest coverage at 1,860 sq ft.
- Best overall: Airmega 200M — 246 CADR and 1,748 sq ft coverage at $229.99, only $40 more than the 150 and $100 more than the 100. See price at cowaymega.com
- Best value: Airmega 100 — At $129.99 it is the least expensive model here and the lightest at 6.6 lb, with 108 CADR and 810 sq ft coverage. See price at cowaymega.com
- Best premium: Airmega 250 — 249 CADR and 1,860 sq ft coverage, the largest here, at $399.00 with 22 dB noise. See price at cowaymega.com
- Best compact: Airmega 150 — A slim 13.4 x 18.5 x 6.5 in body with 153 CADR and 1,035 sq ft coverage for $189.99. See price at cowaymega.com
| Product | cadr | coverage sqft | noise db | power w | filter life | weight | Price now | 90-day low | Rating | |
|---|---|---|---|---|---|---|---|---|---|---|
| Airmega 100 | 108 | 810 sq ft | 20 dB | 25 W | 1 Year | 6.6 lb | $129.99 | $129.99 | — | cowaymega.com |
| Airmega 150 | 153 | 1035 sq ft | 20 dB | 35 W | 6 Months / 1 Year | 12.1 lb | $189.99 | $189.99 | — | cowaymega.com |
| Airmega 200M | 246 | 1748 sq ft | 24.4 dB | 82 W | 6 Months / 12 months | 12.3 lb | $229.99 | $229.99 | — | cowaymega.com |
| Airmega 250 | 249 | 1860 sq ft | 22 dB | 64 W | 1 Year | 20.5 lb | $399.00 | $399.00 | — | cowaymega.com |
| Airmega 250S | 249 | 1860 sq ft | 22 dB | 64 W | 1 Year | 20.5 lb | $449.00 | $449.00 | — | cowaymega.com |
Airmega 100
Pros
- Lowest price in the lineup at $129.99, $60.00 less than the Airmega 150
- Quiet operation rated at 20 dB
- Lightweight at 6.6 lb with compact 8.7 x 15.6 x 8.7 in dimensions
- Includes a PM 2.5 particle sensor and 3-in-1 filter lasting 1 year
Cons
- CADR of 108 is the lowest in the series
- Power draw of 25 W is modest but coverage rating of 810 sq ft is the smallest here
Who it's for: Buyers wanting a compact, quiet, budget Coway tower purifier for a small-to-medium room.
Airmega 150
Pros
- 153 CADR and 1035 sq ft coverage, above the Airmega 100's 108 CADR and 810 sq ft
- Runs at 20 dB, matching the quietest unit in the line
- Slim 6.5 in depth, shallower than the Airmega 100's 8.7 in
- Priced at its 90-day low of $189.99, flat over the tracked period
Cons
- Filter life is listed as 6 months / 1 year, so the shorter interval may apply
- At 35 W it draws more power than the Airmega 100's 25 W
Who it's for: Buyers who want more CADR and coverage than the Airmega 100 in a slim, quiet tower for about $60 more.
Airmega 200M
Pros
- 246 CADR and 1748 sq ft coverage, the highest CADR in the family below the 250 series
- 24.4 dB noise rating and 82 W power draw
- Dual filter life of 6 months / 12 months
- At $229.99, it's $100 more than the Airmega 100 and $169.01 less than the Airmega 250
Cons
- 82 W power draw is the highest in the lineup
- 24.4 dB is louder than the 20 dB Airmega 100 and 150 and the 22 dB 250 series
Who it's for: Buyers who want strong mid-size-room cleaning capacity without stepping up to the larger, pricier Airmega 250.
Airmega 250
Pros
- 249 CADR and 1,860 sq ft coverage, the highest coverage in the lineup
- Quiet 22 dB operation at 64 W
- 1-year filter life
- $50.00 less than the Airmega 250S
Cons
- At $399.00 it costs $169.01 more than the Airmega 200M
- 20.5 lb and 18.5 x 19.7 x 8.3 in, the heaviest and largest here
Who it's for: Anyone purifying a large room who wants top coverage and quiet running and will pay well above the 200M.
Airmega 250S
How we chose
We compared the five Airmega tower models on the specs that decide whether a purifier suits a room: CADR, coverage, noise, power draw, filter life and current price. The Airmega 100 is the smallest and lightest at 6.6 lb, with 108 CADR, 810 sq ft of coverage, 25 W draw and a 3-in-1 filter rated for 1 Year, at $129.99. The Airmega 150 steps up to 153 CADR and 1,035 sq ft, draws 35 W, runs at 20 dB and uses a filter rated 6 Months / 1 Year, at $189.99 — $60.00 more than the 100.
The Airmega 200M reaches 246 CADR and 1,748 sq ft, draws 82 W, runs at 24.4 dB, and takes a filter rated 6 Months / 12 months, at $229.99 — $40.00 more than the 150 and $100.00 more than the 100. The Airmega 250 and 250S share 249 CADR, 1,860 sq ft, 64 W, 22 dB, a 1 Year filter and a 20.5 lb body; the 250 is $399.00 and the 250S is $449.00, $50.00 more. Each price sits at its 90-day low.
Who should skip these
If the room you're purifying is larger than 1,860 sq ft, none of these units is sized for it — that's the top coverage in the lineup, shared by the Airmega 250 and 250S. The Airmega 200M reaches 1,748 sq ft, the Airmega 150 reaches 1,035 sq ft, and the Airmega 100 covers 810 sq ft.
Skip these if you need something the specs don't cover. None of the listed units carries a weight under 6.6 lb beyond the Airmega 100 itself, so if portability is the priority, the 100 is the only compact option at 6.6 lb; the 150 is 12.1 lb, the 200M 12.3 lb, and the 250 and 250S are both 20.5 lb. If you want the lowest running draw, the Airmega 100 is listed at 25 W, against 35 W for the 150, 82 W for the 200M, and 64 W for the 250 and 250S.
On price, the 250S at $449.00 is $50.00 more than the Airmega 250 at $399.00, and $219.01 more than the 200M at $229.99. If that gap matters more than the extra features the 250S may add, the 250 is the closer fit.
How to choose the right one
Start with the room, not the price. The Airmega 100 is rated at 108 CADR and 810 sq ft of coverage, the Airmega 150 at 153 CADR and 1,035 sq ft, the Airmega 200M at 246 CADR and 1,748 sq ft, and the Airmega 250 and 250S at 249 CADR and 1,860 sq ft each. If your room is small, the lower figures are enough; if it is larger, the 200M and 250 series are the ones that match it.
Then weigh the price steps. The Airmega 150 costs $60.00 more than the Airmega 100, the 200M costs $100.00 more than the 100 and $40.00 more than the 150, and the 250 costs $169.01 more than the 200M. The 250S costs $50.00 more than the 250, and $319.01 more than the 100.
Noise and filter life differ too. The 100 and 150 are listed at 20 dB, the 250 and 250S at 22 dB, and the 200M at 24.4 dB. The 100 and 250 series list a 1 Year filter life; the 150 lists 6 Months / 1 Year and the 200M 6 Months / 12 months. The 100 weighs 6.6 lb; the 250 and 250S weigh 20.5 lb.
Questions readers ask
How much more does the Airmega 150 cost than the Airmega 100?
The Airmega 150 costs $60.00 more than the Airmega 100.
What's the price difference between the Airmega 250 and the 250S?
The Airmega 250S costs $50.00 more than the Airmega 250.
Which model covers the largest room?
The Airmega 250 and 250S both list 1860 sq ft of coverage, ahead of the 200M at 1748 sq ft, the 150 at 1035 sq ft, and the 100 at 810 sq ft.
How quiet are these purifiers?
The Airmega 100 and 150 are rated at 20 dB, the 250 and 250S at 22 dB, and the 200M at 24.4 dB.
How often do the filters need replacing?
The Airmega 100, 250, and 250S list a 1-year filter life, while the 150 and 200M list 6 months to 1 year.
Update history
- — Prices and availability refreshed
- — Every model in the line is currently at its 90-day low, with prices flat over the period.
- — First published
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