Best Air Purifiers — every ranking, by use case and budget
Every purifier here was bought at retail and measured in the same room. Scores are locked before any affiliate link is added; Amazon links carry our Associates tag.
By use case indexed
In-depth air purifiers reviews
Coway Airmega AP-1512HH Mighty
The benchmark: 361 sq ft rated, CADR 246, quiet on low, cheap filters, and an auto mode that actually turns it down — for $230
Read Coway Airmega AP-1512HH Mighty ReviewLevoit Core 600S
Big-room power — 635 sq ft rated, CADR 410 — with an app, auto mode and the fastest clearance we timed, for $300
Read Levoit Core 600S ReviewWinix 5500-2
A true carbon filter you can wash, 360 sq ft coverage, auto mode and frequent deep discounts — the Coway's closest rival
Read Winix 5500-2 ReviewLevoit Core 300S
The best-selling purifier on Amazon: small, quiet, app-controlled and cheap to run — right for a bedroom, not a living room
Read Levoit Core 300S ReviewBlueair Blue Pure 211i Max
Swedish design with a fabric pre-filter, 635 sq ft coverage and the quietest high setting for its airflow — at a premium in filters
Read Blueair Blue Pure 211i Max ReviewCoway Airmega 400
Two large filters and 1,560 sq ft of rated coverage — the purifier for a whole floor, priced and sized accordingly
Read Coway Airmega 400 ReviewHoneywell HPA300
A big, plain HEPA box with 465 sq ft coverage and three HEPA filters inside — strong, loud and not smart
Read Honeywell HPA300 ReviewGuides that send readers to these rankings
Air Purifiers for Wildfire Smoke: What Works and What to Run
Why smoke needs airflow and carbon, the units in our ranking that handled it, and the settings for a smoke day.
What Size Air Purifier Do You Need? CADR Explained With Our Test Numbers
The CADR rule of thumb, the makers' coverage claims against what we measured, and one purifier per room versus one big one.