Air Purifier Ranking

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Coway air purifiers, ranked

8 models tracked, average score 60 of 100. Best of the lineup: Coway Airmega 300.

1
Coway Airmega 300
Coway Airmega 300
#6 of 18 in large
$279
3.6
300 cfmsmoke CADR
465 sq ftAHAM room size
52 dBat full speed
57 Wmax power
Value Quietness Filter cost

Two-sided filtration with a real carbon layer; filters cost more than most.

One air change of a 300 sq ft room in about 8 min$110 a year in filters$829 to own for 5 yearsAHAM Verifide CADR1.1 lb activated carbon
Amazon · $279CowayFull review
2
Coway Airmega 400
Coway Airmega 400
#7 of 18 in large
$379
3.5
350 cfmsmoke CADR
542 sq ftAHAM room size
52 dBat full speed
66 Wmax power
Value Quietness Filter cost

High CADR at a quiet 52 dB maximum; annual filter cost is among the highest here.

One air change of a 300 sq ft room in about 7 min$130 a year in filters$1,029 to own for 5 yearsAHAM Verifide CADR1.3 lb activated carbon
Amazon · $379CowayFull review
3
Coway Airmega 400S
$449
3.5
350 cfmsmoke CADR
542 sq ftAHAM room size
52 dBat full speed
66 Wmax power
Value Quietness Filter cost

Airmega 400 with Wi-Fi app control.

One air change of a 300 sq ft room in about 7 min$130 a year in filters$1,099 to own for 5 yearsAHAM Verifide CADR1.3 lb activated carbon
Amazon · $449CowayFull review
4
Coway Airmega AP-1512HH Mighty
Coway Airmega AP-1512HH Mighty
#6 of 22 in medium · independently tested
$180
3.4
233 cfmsmoke CADR
361 sq ftAHAM room size
54 dBat full speed
77 Wmax power
Value Quietness Filter cost

The long-running benchmark: strong CADR for the price, a real auto mode and cheap annual filters.

One air change of a 300 sq ft room in about 10 min$50 a year in filters$430 to own for 5 yearsAHAM Verifide CADR
Amazon · $180CowayFull review
5
Coway Airmega 200M
$189
3.4
233 cfmsmoke CADR
361 sq ftAHAM room size
54 dBat full speed
77 Wmax power
Value Quietness Filter cost

Same internals as the Mighty in a square housing with a square filter.

One air change of a 300 sq ft room in about 10 min$50 a year in filters$439 to own for 5 yearsAHAM Verifide CADR
Amazon · $189CowayFull review
6
Coway Airmega 250
Coway Airmega 250
#9 of 22 in medium · independently tested
$229
3.4
240 cfmsmoke CADR
372 sq ftAHAM room size
52 dBat full speed
52 Wmax power
Value Quietness Filter cost

Quiet for its CADR; the 930 sq ft claim is at 1 air change per hour, so treat it as a 370 sq ft unit for allergies.

One air change of a 300 sq ft room in about 10 min$70 a year in filters$579 to own for 5 yearsAHAM Verifide CADR
Amazon · $229CowayFull review
7
Coway Airmega 100
Coway Airmega 100
#16 of 22 in medium · independently tested
$130
3.1
148 cfmsmoke CADR
229 sq ftAHAM room size
57 dBat full speed
23 Wmax power
Value Quietness Filter cost

Coway's bedroom unit with auto mode. CADR is derived from Coway's 222 sq ft claim at 5 air changes an hour; no AHAM listing was found.

One air change of a 300 sq ft room in about 16 min$40 a year in filters$330 to own for 5 years
Amazon · $130CowayFull review
8
Coway Airmega 150
Coway Airmega 150
#2 of 4 in compact · independently tested
$149
3.1
128 cfmsmoke CADR
198 sq ftAHAM room size
47 dBat full speed
32 Wmax power
Value Quietness Filter cost

Compact unit with auto mode and a washable prefilter; filters are pricey for the CADR.

One air change of a 300 sq ft room in about 19 min$45 a year in filters$374 to own for 5 yearsAHAM Verifide CADR
Amazon · $149CowayFull review

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