Air Purifiers
Air purifier comparisons built from manufacturer specifications: CADR, rated room size, air changes per hour, noise range, power draw and filter life.
Best-of guides
Best air purifier for pets
Pet homes need three things from a purifier: enough clean-air delivery for the room, a pre-filter that catches hair before it clogs the HEPA, and carbon for odors.
Read the comparison Best ofAir PurifiersBest air purifier for a dorm room
A typical dorm room is small, shared and short on floor space. You want a compact purifier sized for about 150–250 ft² that’s quiet enough to sleep next to.
Read the comparison Best ofAir PurifiersBest air purifier for a bedroom
For a bedroom, low-speed noise and the right size matter most.
Read the comparison Best ofAir PurifiersBest air purifier for a living room
Living rooms need more clean-air output than bedrooms.
Read the comparisonHead-to-head comparisons
Levoit vs Coway air purifier: Core 400S vs Airmega AP-1512HH (Mighty)
Near-identical clean-air ratings, very different designs. Here’s how Levoit’s smart tower and Coway’s long-running Mighty compare, and which suits your room.
Read the comparison Head to headAir PurifiersLevoit vs Winix air purifier: Core 400S vs Winix 5500-2
Both are rated for a roughly 360 ft² room at 4.8 air changes an hour. One is an app-connected tower, the other a button-driven box with a washable carbon filter.
Read the comparison Head to headAir PurifiersCoway vs Winix: Airmega Mighty AP-1512HH vs Winix 5500-2
Two no-app purifiers rated for almost exactly the same room. The differences are filters, shape and power draw.
Read the comparison Head to headAir PurifiersLevoit Core 300S vs Winix A231
Two small-room purifiers: one with an app, one with an ionizer and slightly more output.
Read the comparison Head to headAir PurifiersCoway Airmega 250 vs Coway Airmega Mighty
Coway’s bestseller vs its bigger, flatter sibling.
Read the comparison Head to headAir PurifiersLevoit Core 300S vs Levoit Core 400S
Levoit’s bedroom purifier vs its larger sibling.
Read the comparison Head to headAir PurifiersWinix 5500-2 vs Coway Airmega 250
Two popular mid-to-large purifiers with washable pre-stages.
Read the comparison Head to headAir PurifiersWinix A231 vs Winix 5500-2
Winix’s compact purifier vs its larger carbon-filter model.
Read the comparison Head to headAir PurifiersLevoit Core 400S vs Coway Airmega 250
Two mid-size purifiers for living rooms.
Read the comparisonReviews
Levoit Core 400S review
A quiet, app-connected tower purifier for medium rooms, with one caveat about its CADR figures.
Read the comparison ReviewAir PurifiersWinix 5500-2 review
A no-app air purifier with separate CADR ratings, a washable carbon filter and a 2-year warranty.
Read the comparison ReviewAir PurifiersCoway Airmega Mighty (AP-1512HH) review
A button-driven, no-app purifier with separate smoke, dust and pollen CADR figures and an ionizer you can switch off.
Read the comparison ReviewAir PurifiersLevoit Core 300S review
A small, app-connected purifier for bedrooms, offices and dorms.
Read the comparison ReviewAir PurifiersWinix A231 review
A compact, no-app purifier rated for slightly bigger rooms than its Levoit rival.
Read the comparison ReviewAir PurifiersCoway Airmega 250 review
A larger Coway for open-plan rooms, with a washable pre-filter.
Read the comparisonWhat to look for in air purifiers
CADR first
Clean Air Delivery Rate (in CFM) is the most comparable number. Higher CADR cleans a given room faster.
Read the room size footnote
Brands quote room size at different air changes per hour (1, 2, 4.8 or 5 ACH). Compare at the same ACH, ideally 4.8 or 5.
Noise at the speed you will use
The low number is sleep mode. The high number is what you hear when it is actually working hard.
Filter life and type
Check how often the HEPA and carbon stages need replacing and whether the pre-filter is washable.
General guidance from manufacturer documentation. Always check the manual for your exact model. How we research.