Levoit Core 400S-P
AHAM verified
- Really cleans
- 356 sq ft33 m² 33 m²356 sq ft
- Box says
- 1,718 sq ft160 m² 4.8× overstated
- New filter
- 6–12 months
Coway · Airmega 200M (AP-1518R)
Coway Airmega 200M
Not verified. A verified model that cleans at least as much: Levoit Vital 200S-P, 381 sq ft35 m².
Really cleansNot verified
374 sq ft34 m² 34 m²374 sq ft
At 4.8 air changes an hour with a 2.5 m ceiling
- Box says
- Purifies 1,748 ft² in 60 minsPurifies 1,748 ft² in 60 mins (162 m²) 4.7× overstated
- New filter
- Every 6–12 months
See it on Amazon: Coway Airmega 200MPaid link
A Mighty-shaped Coway with an air quality sensor and a switchable ionizer. The CADR is Coway's own figure, not verified.
Verdict
Who it's for
The same shape as the Mighty, with a slightly higher CADR on Coway's sheet and a bipolar ionizer you can switch off. We can't verify the CADR, so we don't make it a pick.
Good
- Air quality sensor and auto mode
- Ionizer can be switched off
- Coway prints the honest room size too
Trade-offs
- CADR not independently verified
- Has an ionizer
Spec facts
Coway Airmega 200M · Airmega 200M (AP-1518R)
- Really cleans
- 374 sq ft · 34 m²34 m² · 374 sq ftat 4.8 air changes an hour, 2.5 m ceiling
- Smoke CADR
- 246 CFM · 418 m³/hMaker’s figure, not independently verified
- Maker’s claim: Coway · checked 1 Nov 2026
- Box claim
- Purifies 1,748 ft² in 60 minsPurifies 1,748 ft² in 60 mins (162 m²)4.7× overstated
- Maker’s claim: Coway · checked 1 Nov 2026
- Filter
- Coway Airmega 200M filter setPre-filter + deodorization filter (6 months) + HEPA (12 months). Replace every 6–12 months
- Maker’s claim: Coway · checked 1 Nov 2026
Maker’s claim: the manufacturer’s own figure, not independently checked. Where figures come from
Running it
Filter and upkeep
- Replacement filter
- Coway Airmega 200M filter set
- Type
- Pre-filter + deodorization filter (6 months) + HEPA (12 months)
- Replace every
- 6–12 months
- Power at top speed
- 82 W
A new filter every 6–12 months means 1–2 filters a year. Its parts wear out at different rates, as the type above says, so the range covers both. At top speed it draws 82 W: 2 kWh if it ran flat out all day. Slower settings use less.
We have no Amazon link for this filter: the maker's page in the sources sells or lists it.
Source: Maker’s claim, Coway, checked 1 Nov 2026
The box vs the maths
The box says 1,748 sq ft162 m². It really cleans 374 sq ft34 m².
To clean 1,748 sq ft162 m² it would only change the air in the room 1 time an hour. We size every purifier at 4.8 air changes an hour, the level AHAM's room-size guideline works out to.
Coway's figure is the room it can change the air of once an hour, and the wording says as much. That's a real number, but at one air change an hour smoke and pollen come back in nearly as fast as the purifier removes them. The CADR behind both numbers is Coway's own; AHAM hasn't certified it.
418 m³/h smoke CADR ÷ (4.8 × 2.5 m ceiling) = 34.8 m² = 374.9 sq ft34.8 m²
Use the calculator for your exact room and ceiling, or read how we pick.
Drawn to scale: the box says “Purifies 1,748 ft² in 60 mins”, the purifier really cleans 374 sq ft, 4.7 times less.Drawn to scale: the box says “Purifies 1,748 ft² in 60 mins”, the purifier really cleans 34 m², 4.7 times less.
Room sizes
Which rooms it fits
It suits 215 sq ft20 m² and 269 sq ft25 m² rooms best: there it has 36–70% more air than the room needs, so it needn't run flat out. At 322 sq ft30 m² it only just keeps up (13% to spare), so it would run near its top speed, usually its loudest (why we don’t list noise). In rooms of 161 sq ft15 m² or less it's more than twice the size needed; a smaller model does the job.
Under a 2.7 m ceiling it covers 347 sq ft, under 3 m 312 sq ftUnder a 2.7 m ceiling it covers 32 m², under 3 m 29 m², so with a 3 m ceiling it no longer covers 322 sq ft30 m² (why).
For a 376 sq ft room or bigger it's too small, although the box claims 1,748 sq ft: the For a 35 m² room or bigger it's too small, although the box claims 162 m²: the 376 sq ft35 m² page lists models that cover it.
All of this rests on Coway's own CADR figure. AHAM hasn't certified it, so we never make it a pick; a certified model is the safer buy at the same size.
Alternatives
The Coway Airmega 200M or one of these?
The certified models closest in size, and what is different about each, from the same kinds of source.
Cleans 356 sq ft, 18 sq ft lessCleans 33 m², 1 m² less, on a certified CADR. It has no ionizer. It draws 38 W at top speed. 5.5 cm taller and 0.6 kg lighter.
Levoit Vital 200S-P
AHAM verified
- Really cleans
- 381 sq ft35 m² 35 m²381 sq ft
- Box says
- 1,862 sq ft173 m² 4.9× overstated
- New filter
- 6–12 months
Cleans 381 sq ft, 7 sq ft moreCleans 35 m², 1 m² more, on a certified CADR. It has no ionizer. It draws 50 W at top speed. 3.7 cm taller.
Winix 5510
AHAM verified
- Really cleans
- 385 sq ft35 m² 35 m²385 sq ft
- Box says
- 392 sq ft36 m² about right
- New filter
- 12 months
Cleans 385 sq ft, 11 sq ft moreCleans 35 m², 1 m² more, on a certified CADR. It goes longer between filters (every 12 months) and draws 65 W at top speed. 9.8 cm taller.
Sources
Where these numbers come from
- Maker’s claim Coway Airmega 200M product page and specifications · Coway
- Third party Coway Airmega 200M review: the ionizer has its own on/off button · SlashGear
We don't test purifiers ourselves: every figure on this page is copied from these sources and was last checked on 1 Nov 2026. Spotted one that's wrong or out of date? Tell us and we'll fix it and change the date.