Quietest Air Purifiers: 30 Ranked by Published Decibels
30 HEPA air purifiers from Coway, Levoit and Medify ranked by the lowest noise level each maker publishes, with the loudest setting, coverage and a source link.
Short answerBy the makers' own figures, the quietest air purifier here is the Coway Airmega Halo at 17.8 dB(A) on its lowest setting, followed by the Coway Airmega Mighty2 at 19 dB and the Mighty2 Mini at 19.2 dB. Every figure is the maker's lowest setting; the same purifiers reach about 44 to 61 dB on high, and a purifier filters less air on its quiet setting.
Almost every air purifier is sold as quiet, so this page ranks them by the number each maker actually publishes: the noise level on the lowest fan setting, usually sleep mode. The table also shows the loudest published setting and the maker's coverage figure, because a purifier that is quiet only because it is small will not keep up in a large room.
Click a column heading to sort (this needs JavaScript; without it the table stays in rank order). Ties share a rank. The Amazon button goes to an exact listing that was new and in stock when we checked it, or to a labeled Amazon search.
30 products from 3 brands, ranked by the figure each brand publishes. Specs checked against each brand's product page on November 7, 2026; Amazon stock and seller the same day.
Air purifiers ranked by lowest published noise
| Rank | Product | Lowest published noise | Highest published noise | Published coverage | Source | Amazon |
|---|---|---|---|---|---|---|
| 1 | Coway Airmega Halo (AP-1526D) | 17.8 dB | 52.13 dB | Room Coverage: 1 air change/hr.* 1,898 ft² | Coway page | Check price on Amazon |
| 2 | Coway Airmega Mighty2 (AP-1512N) | 19 dB | 50 dB | Room Coverage: 1 air change/hr.* 1,800 ft² | Coway page | Check price on Amazon |
| 3 | Coway Airmega Mighty2 Mini | 19.2 dB | 49 dB | Room Coverage: 1 air change/hr.* 1,043 ft² | Coway page | Check price on Amazon |
| 4 | Medify MA-25 | 19.8 dB | 49.3 dB | can clean 413 sq ft in 30 minutes | Medify page | Search Amazon for Medify MA-25 Air Purifier |
| 5 | Coway Airmega 150 | 19.98 dB | 48.3 dB | Room Coverage: 1 air change /hr.* 1,035 ft² | Coway page | Check price on Amazon |
| 5 | Coway Airmega 160 | 19.98 dB | 48.3 dB | Room Coverage: 1 air change /hr.* 1,035 ft² | Coway page | Check price on Amazon |
| 7 | Coway Airmega 100 | 20 dB | 48 dB | Room Coverage: 1 air change/hr.* 810 ft² | Coway page | Check price on Amazon |
| 7 | Levoit Eleva 300X | 20 dB | 50 dB | Ideal Room Size: 250 sq ft (4.8 ACH)/ 1200 sq ft (1 ACH) | Levoit page | Check price on Amazon |
| 9 | Medify MA-50 (V3.0) | 21.2 dB | 60.6 dB | can clean 1320 sq ft in 30 minutes | Medify page | Check price on Amazon |
| 10 | Coway Airmega 350 | 21.5 dB | 54.7 dB | Purifies 2,640ft² in 60 mins | Coway page | Check price on Amazon |
| 11 | Coway Airmega 250 | 22 dB | 54 dB | Room Coverage: 1 air change/hr. *** 1,860 ft² | Coway page | Check price on Amazon |
| 11 | Coway Airmega 250S | 22 dB | 54 dB | Room Coverage: 1 air change/hr. *** 1,860 ft² | Coway page | Check price on Amazon |
| 11 | Coway Airmega 300 | 22 dB | 52 dB | Room Coverage: 1 air change/hr.* 2,512 ft² | Coway page | Check price on Amazon |
| 11 | Coway Airmega 400 | 22 dB | 52 dB | Room Coverage: 1 air change/hour 3,120 ft² | Coway page | Check price on Amazon |
| 11 | Coway Airmega 400S | 22 dB | 52 dB | Room Coverage: 1 air change/hour 3,120 ft² | Coway page | Check price on Amazon |
| 11 | Levoit Core 400S-P | 22 dB | 52 dB | Ideal Room Size : 1718 ft2 (1 ACH) / 358 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 11 | Levoit Eleva 500X | 22 dB | 52 dB | Ideal Room Size: 467 ft² (4.8 ACH) / 2,241 ft² (1ACH) | Levoit page | Check price on Amazon |
| 11 | Levoit Sprout | 22 dB | 50 dB | Not listed | Levoit page | Check price on Amazon |
| 19 | Levoit Vital 100S-P | 23 dB | 52 dB | Ideal Room Size : 1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 19 | Levoit Vital 200S-P | 23 dB | 54 dB | Ideal Room Size : 1862 ft2 (1 ACH) / 388 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 21 | Coway Airmega 450 | 23.6 dB | 57.7 dB | Purifies 3,285ft² in 60 mins | Coway page | Check price on Amazon |
| 22 | Coway Airmega Mighty (AP-1512HH) | 24 dB | 53 dB | Room Coverage: 1 air change/hr.* 1,748 ft² | Coway page | Check price on Amazon |
| 22 | Levoit Core 300-P | 24 dB | 54.5 dB | Ideal Room Size : 1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 22 | Levoit EverestAir-P | 24 dB | 56 dB | Ideal Room Size : 2635 ft2 (1 ACH) / 549 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 25 | Coway Airmega 200M | 24.4 dB | 55.1 dB | Room Coverage: 1 air changes/hr.* 1,748 ft² | Coway page | Check price on Amazon |
| 26 | Levoit Core Mini-P | 25 dB | 44 dB | Ideal Room Size : 254 ft2 (1 ACH) / 53 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 26 | Levoit LV-H132 | 25 dB | 50 dB | Ideal Room Size : 259 ft2 (1 ACH) / 54 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
| 28 | Levoit Core 600S-P | 26 dB | 55 dB | Changes the air in a 2909 ft2 room once per hour | Levoit page | Check price on Amazon |
| 28 | Medify MA-14 | 26 dB | 48.3 dB | can clean 213 sq ft in 30 minutes | Medify page | Check price on Amazon |
| 30 | Levoit Core 200S-P | 27 dB | 48 dB | Ideal Room Size : 672 ft2 (1 ACH) / 140 ft2 (4.8 ACH) | Levoit page | Check price on Amazon |
How this page works
Desk research only. We did not measure any of these purifiers. Each noise figure was read from the maker's own product page (the link in the Source column) on the date shown above, and the exact phrase it came from is stored with the data. Makers measure noise in their own labs and do not always say how, so treat a 1 or 2 dB difference as a tie. Levoit's Core 400S-P page gives 22 dB in its specification table but says as low as 24 dB elsewhere on the same page; the table uses the specification figure.
Only brands whose product pages publish a noise figure we could read are included: Coway, Levoit and Medify. Brands whose pages we could not read, or that publish no decibel figure, are left out rather than estimated. Coverage figures use different bases (one air change an hour, 4.8 air changes an hour, or 30 minutes for Medify), so compare clean air delivery rate (CADR) where you can.
EPA says an air cleaner filters less air at a lower speed and that more air passes through the filter at higher fan speeds, so choose a purifier with enough capacity for the room that it can run on a quiet setting. EPA also says to avoid air cleaners that intentionally produce ozone.