Best Air Purifiers

Allfor allergiesfor large roomsfor pets

Summary. Get the Coway Airmega AP-1512HH Mighty — it wins on nearly every platform, costs under $150, and users report it running flawlessly for a decade. Need to cover a large room? Step up to the Blueair 211i Max, which posted the highest CADR scores of anything Tom's Guide tested. And if you're technically inclined and want maximum performance per dollar, a Corsi-Rosenthal box beats most $300 commercial purifiers for $150 in parts.

Best Overall$90-$150

Coway Airmega AP-1512HH (Mighty)

Wirecutter's top pick and Reddit's most-recommended air purifier by a wide margin. Cleans large spaces efficiently at low power draw, and costs a fraction of premium competitors.

If you buy nothing else, buy this. It's been the consensus best air purifier for years because it outperforms machines that cost twice as much — full stop.

Pros
  • Wirecutter's top pick among all air purifiers tested
  • Low electricity draw compared to similarly capable competitors
  • Highly recommended across Reddit communities and professional review sites
  • Decade-long reliability reported by real users — built to last
Cons
  • Dated industrial design compared to newer stylish competitors
  • No Wi-Fi or smart home integration in the base model
  • Filter replacement costs add up over time

“Glad Coway is at the top. I bought 2 of them about a decade ago, and they run constantly.”

— Reddit user
Sources:reddit.com·nytimes.com·wired.com
Buy on Amazon $90-$150
Best for Large Rooms$200-$350

Blueair Blue Pure 211i Max

Wirecutter's top recommendation for spaces up to 750 sq ft, delivering four air changes per hour without hogging electricity. Tom's Guide found it averaged the highest CADR scores of any purifier tested.

Buy on Amazon $200-$350
Best Budget Pick$100-$180

Winix 5500-2 / 5510

A consistent Reddit favorite that punches well above its price with true HEPA filtration and PlasmaWave technology. Frequently cited alongside the Coway Mighty as one of the two best value air purifiers you can buy.

Buy on Amazon $100-$180
Best Premium$700-$900

Dyson Big+Quiet BP03

PCMag's top smart air purifier pick combines HEPA filtration with multiple air quality sensors and a powerful cooling fan — all in one sleek unit. Built for buyers who want maximum features and don't mind paying for them.

Buy on Amazon $700-$900
Best DIY / High Performance Value$50-$150

Corsi-Rosenthal Box (DIY)

RTINGS.com called a ~$150 DIY air purifier the best performer they've ever tested, and Reddit's ZeroCovidCommunity consistently champions Corsi-Rosenthal boxes for high-CADR, low-cost air cleaning. Built from box fans and MERV-13 filters, it outperforms most commercial units on raw airflow.

Buy on Amazon $50-$150