Air · Best-of

Best Quiet Air Purifier for Bedrooms

A bedroom purifier has to be quiet enough to sleep through. We surface real-HEPA, ozone-free units that run at or below roughly 30 dBA on their lowest useful speed, then rank by composite score.

How we score: We require a low-speed noise rating at or below ~30 dBA, real HEPA, and no ozone, then rank by composite score.

1. 18.7

   Coway Airmega AP-1512HH Mighty

   The Coway Airmega AP-1512HH Mighty is a medium-room air purifier built around a True HEPA sealed-system filter. Its Clean Air Delivery Rate is AHAM-verified at 246 cfm, and it uses no ionizer and no ozone-generating stage. Filters run about $36 per year, among the cheapest to run in our set.

   • Real coverage at 4.8 ACH: ~381 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $36/yr
2. 27.1

   Levoit Core 300S

   The Levoit Core 300S is a medium-room air purifier built around a H13 filter. Its Clean Air Delivery Rate is AHAM-verified at 175 cfm, and it uses no ionizer and no ozone-generating stage. Filters run about $45 per year, a typical running cost.

   • Real coverage at 4.8 ACH: ~271 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $45/yr
3. 37.1

   Levoit Vital 200S

   The Levoit Vital 200S is a medium-room air purifier built around a True HEPA filter. Its Clean Air Delivery Rate is AHAM-verified at 289 cfm, and it uses no ionizer and no ozone-generating stage. Filters run about $50 per year, a typical running cost.

   • Real coverage at 4.8 ACH: ~448 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $50/yr
4. 46.5

   Levoit Core 400S

   The Levoit Core 400S is a large-room air purifier built around a H13 filter. Its Clean Air Delivery Rate is AHAM-verified at 259 cfm, and it uses no ionizer and no ozone-generating stage. Filters run about $75 per year, a typical running cost.

   • Real coverage at 4.8 ACH: ~401 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $75/yr
5. 54.3

   Dyson Purifier Big+Quiet Formaldehyde (BP03)

   The Dyson Purifier Big+Quiet Formaldehyde (BP03) is a whole-house air purifier built around a H13 sealed-system filter. Its 200 cfm CADR is a manufacturer figure, not AHAM-verified, and it uses no ionizer and no ozone-generating stage. Filters run about $79 per year, a typical running cost.

   • Real coverage at 4.8 ACH: ~310 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $79/yr
6. 64.0

   Coway Airmega 400

   The Coway Airmega 400 is a whole-house air purifier built around a True HEPA filter. Its Clean Air Delivery Rate is AHAM-verified at 400 cfm, and it uses no ionizer and no ozone-generating stage. Filters run about $129 per year, on the expensive end to run.

   • Real coverage at 4.8 ACH: ~620 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $129/yr
7. 73.9

   Alen BreatheSmart Flex

   The Alen BreatheSmart Flex is a large-room air purifier built around a H13 filter. Its 225 cfm CADR is a manufacturer figure, not AHAM-verified, and it uses no ionizer and no ozone-generating stage. Filters run about $89 per year, a typical running cost.

   • Real coverage at 4.8 ACH: ~349 sq ft
   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $89/yr
8. 82.1

   Molekule Air Pro

   The Molekule Air Pro is a whole-house air purifier built around a True HEPA filter. Its performance is not published as an AHAM-verified CADR, and it uses no ionizer and no ozone-generating stage. Filters run about $350 per year, on the expensive end to run.

   • Ozone / ionizer: no ionizer and no ozone-generating stage
   • Annual filter cost: $350/yr