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Cheapest Air Purifiers to Run (Filters plus Power)

48 qualify, listed by filter cost per 100cadr. Updated October 18, 2026.

1
Honeywell HPA300
Honeywell HPA300
#13 of 18 in large · independently tested
$190
3.2
300 cfmsmoke CADR
465 sq ftAHAM room size
60 dBat full speed
130 Wmax power
Value Quietness Filter cost

Proven large-room CADR at a fair price; loud and power-hungry at full speed, no auto mode.

One air change of a 300 sq ft room in about 8 min$60 a year in filters$490 to own for 5 yearsAHAM Verifide CADR
Amazon · $190HoneywellFull review
2
Honeywell HPA5300
Honeywell HPA5300
#12 of 18 in large
$250
3.2
300 cfmsmoke CADR
465 sq ftAHAM room size
58 dBat full speed
120 Wmax power
Value Quietness Filter cost

HPA300 internals with a particle sensor, auto mode and app.

One air change of a 300 sq ft room in about 8 min$60 a year in filters$550 to own for 5 yearsAHAM Verifide CADR
Amazon · $250HoneywellFull review
3
Coway Airmega AP-1512HH Mighty
Coway Airmega AP-1512HH Mighty
#7 of 22 in medium · independently tested
$180
3.3
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
4
Coway Airmega 200M
Coway Airmega 200M
#9 of 22 in medium · independently tested
$189
3.3
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
5
Winix 9800
Winix 9800
#3 of 5 in extra large
$279
3.6
405 cfmsmoke CADR
628 sq ftAHAM room size
56 dBat full speed
85 Wmax power
Value Quietness Filter cost

Large-room Winix with heavy carbon and app; slightly costlier than the T810.

One air change of a 300 sq ft room in about 6 min$95 a year in filters$754 to own for 5 yearsAHAM Verifide CADR1.2 lb activated carbon
Amazon · $279WinixFull review
6
Smart Air Blast Mini MK II
Smart Air Blast Mini MK II
#5 of 5 in extra large · independently tested
$500
2.6
435 cfmsmoke CADR
674 sq ftAHAM room size
57 dBat full speed
65 Wmax power
Value Quietness Filter cost

Steel-cabinet workhorse with published test data; no sensor, no app.

One air change of a 300 sq ft room in about 6 min$110 a year in filters$1,050 to own for 5 years
Amazon · $500Smart AirFull review
7
Honeywell HPA200
Honeywell HPA200
#18 of 22 in medium
$140
2.8
190 cfmsmoke CADR
294 sq ftAHAM room size
58 dBat full speed
95 Wmax power
Value Quietness Filter cost

Mid-size HPA; reliable but dated, with no sensor.

One air change of a 300 sq ft room in about 13 min$50 a year in filters$390 to own for 5 yearsAHAM Verifide CADR
Amazon · $140HoneywellFull review
8
Coway Airmega 100
Coway Airmega 100
#14 of 22 in medium · independently tested
$130
3.0
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
9
Medify MA-112
Medify MA-112
#4 of 5 in extra large · independently tested
$450
3.3
950 cfmsmoke CADR
1,472 sq ftAHAM room size
60 dBat full speed
95 Wmax power
Value Quietness Filter cost

Twin-filter unit with very high claimed CADR; not AHAM listed.

One air change of a 300 sq ft room in about 3 min$260 a year in filters$1,750 to own for 5 years
Amazon · $450MedifyFull review
10
Winix C545
Winix C545
#4 of 22 in medium · independently tested
$149
3.3
232 cfmsmoke CADR
360 sq ftAHAM room size
55 dBat full speed
70 Wmax power
Value Quietness Filter cost

5500-class performance with app control.

One air change of a 300 sq ft room in about 10 min$65 a year in filters$474 to own for 5 yearsAHAM Verifide CADR
Amazon · $149WinixFull review
11
Alen BreatheSmart 75i
Alen BreatheSmart 75i
#8 of 18 in large · independently tested
$599
3.3
347 cfmsmoke CADR
538 sq ftAHAM room size
49 dBat full speed
60 Wmax power
Value Quietness Filter cost

Quiet at full speed and well built; price per CADR is high.

One air change of a 300 sq ft room in about 7 min$99 a year in filters$1,094 to own for 5 yearsAHAM Verifide CADR
Amazon · $599AlenFull review
12
Alen BreatheSmart FLEX
Alen BreatheSmart FLEX
#13 of 22 in medium · independently tested
$299
3.0
240 cfmsmoke CADR
372 sq ftAHAM room size
50 dBat full speed
50 Wmax power
Value Quietness Filter cost

45i without the sensor or app.

One air change of a 300 sq ft room in about 10 min$69 a year in filters$644 to own for 5 yearsAHAM Verifide CADR
Amazon · $299AlenFull review
13
Coway Airmega 250
Coway Airmega 250
#10 of 22 in medium · independently tested
$229
3.2
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
14
Levoit Core 600S
Levoit Core 600S
#1 of 5 in extra large · independently tested
$250
3.8
410 cfmsmoke CADR
636 sq ftAHAM room size
55 dBat full speed
49 Wmax power
Value Quietness Filter cost

Large-room CADR from a light, efficient unit; short filter life raises running cost.

One air change of a 300 sq ft room in about 6 min$120 a year in filters$850 to own for 5 yearsAHAM Verifide CADR
Amazon · $250LevoitFull review
15
Winix 5500-2
Winix 5500-2
#5 of 22 in medium · independently tested
$159
3.3
232 cfmsmoke CADR
360 sq ftAHAM room size
55 dBat full speed
70 Wmax power
Value Quietness Filter cost

A pellet-carbon filter you can wash, strong CADR, and a low street price; PlasmaWave can be switched off.

One air change of a 300 sq ft room in about 10 min$70 a year in filters$509 to own for 5 yearsAHAM Verifide CADR1.0 lb activated carbon
Amazon · $159WinixFull review
16
Winix 5300-2
Winix 5300-2
#3 of 22 in medium · independently tested
$139
3.4
232 cfmsmoke CADR
360 sq ftAHAM room size
55 dBat full speed
70 Wmax power
Value Quietness Filter cost

The 5500-2 without the remote and with a lighter carbon filter.

One air change of a 300 sq ft room in about 10 min$70 a year in filters$489 to own for 5 yearsAHAM Verifide CADR1.0 lb activated carbon
Amazon · $139WinixFull review
17
Winix AM90
Winix AM90
#8 of 22 in medium
$179
3.3
232 cfmsmoke CADR
360 sq ftAHAM room size
55 dBat full speed
70 Wmax power
Value Quietness Filter cost

Winix's 360 sq ft platform in a taller cabinet with Wi-Fi.

One air change of a 300 sq ft room in about 10 min$70 a year in filters$529 to own for 5 yearsAHAM Verifide CADR1.0 lb activated carbon
Amazon · $179WinixFull review
18
Levoit Core 200S
Levoit Core 200S
#1 of 4 in compact · independently tested
$80
4.0
118 cfmsmoke CADR
183 sq ftAHAM room size
46 dBat full speed
26 Wmax power
Value Quietness Filter cost

Smallest Levoit with app control; no particle sensor.

One air change of a 300 sq ft room in about 20 min$38 a year in filters$268 to own for 5 yearsAHAM Verifide CADR
Amazon · $80LevoitFull review
19
Levoit Core 300
Levoit Core 300
#12 of 22 in medium · independently tested
$80
3.1
141 cfmsmoke CADR
219 sq ftAHAM room size
50 dBat full speed
45 Wmax power
Value Quietness Filter cost

The best-selling compact purifier; no auto mode, thin carbon, but cheap and quiet on low.

One air change of a 300 sq ft room in about 17 min$45 a year in filters$305 to own for 5 yearsAHAM Verifide CADR
Amazon · $80LevoitFull review
20
Levoit Core 300S
Levoit Core 300S
#11 of 22 in medium · independently tested
$120
3.2
141 cfmsmoke CADR
219 sq ftAHAM room size
50 dBat full speed
45 Wmax power
Value Quietness Filter cost

Core 300 plus a PM2.5 sensor, auto mode and app.

One air change of a 300 sq ft room in about 17 min$45 a year in filters$345 to own for 5 yearsAHAM Verifide CADR
Amazon · $120LevoitFull review
21
Alen BreatheSmart 45i
Alen BreatheSmart 45i
#16 of 22 in medium · independently tested
$349
2.9
245 cfmsmoke CADR
380 sq ftAHAM room size
49 dBat full speed
50 Wmax power
Value Quietness Filter cost

Medium Alen with the same quiet motor; lifetime warranty with filter subscription.

One air change of a 300 sq ft room in about 10 min$79 a year in filters$744 to own for 5 yearsAHAM Verifide CADR
Amazon · $349AlenFull review
22
Winix T810
Winix T810
#15 of 18 in large · independently tested
$249
3.0
267 cfmsmoke CADR
414 sq ftAHAM room size
62 dBat full speed
45 Wmax power
Value Quietness Filter cost

Winix publishes a 267 dust CADR (343 sq ft at 5 air changes); smoke and pollen figures are not published, so dust is used for all three. App control and a heavy carbon filter at a mid-range price.

One air change of a 300 sq ft room in about 9 min$90 a year in filters$699 to own for 5 yearsAHAM Verifide CADR1.2 lb activated carbon
Amazon · $249WinixFull review
23
Blueair Blue Pure 211i Max
$300
3.7
400 cfmsmoke CADR
620 sq ftAHAM room size
53 dBat full speed
52 Wmax power
Value Quietness Filter cost

Quieter and more efficient than the 211+, with app control.

One air change of a 300 sq ft room in about 6 min$140 a year in filters$1,000 to own for 5 yearsAHAM Verifide CADR
Amazon · $300BlueairFull review
24
Honeywell HPA100
Honeywell HPA100
#4 of 4 in compact · independently tested
$100
2.3
100 cfmsmoke CADR
155 sq ftAHAM room size
55 dBat full speed
50 Wmax power
Value Quietness Filter cost

Small HPA for a bedroom; basic and loud for its CADR.

One air change of a 300 sq ft room in about 24 min$35 a year in filters$275 to own for 5 yearsAHAM Verifide CADR
Amazon · $100HoneywellFull review
25
Coway Airmega 150
Coway Airmega 150
#2 of 4 in compact · independently tested
$149
3.0
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
26
Coway Airmega 300
Coway Airmega 300
#6 of 18 in large · independently tested
$279
3.5
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
27
Coway Airmega 400
Coway Airmega 400
#7 of 18 in large
$379
3.4
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
28
Coway Airmega 400S
$449
3.3
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
29
Rabbit Air A3
Rabbit Air A3
#16 of 18 in large · independently tested
$600
3.0
262 cfmsmoke CADR
406 sq ftAHAM room size
51 dBat full speed
57 Wmax power
Value Quietness Filter cost

Rabbit Air's larger unit with app and a laser sensor; premium price.

One air change of a 300 sq ft room in about 9 min$100 a year in filters$1,100 to own for 5 yearsAHAM Verifide CADR
Amazon · $600Rabbit AirFull review
30
Levoit Core 400S
Levoit Core 400S
#2 of 18 in large · independently tested
$180
3.7
260 cfmsmoke CADR
403 sq ftAHAM room size
52 dBat full speed
38 Wmax power
Value Quietness Filter cost

Very efficient CADR per watt; filters are rated for only six months.

One air change of a 300 sq ft room in about 9 min$100 a year in filters$680 to own for 5 yearsAHAM Verifide CADR
Amazon · $180LevoitFull review

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