Best air purifiers for cadr & airflow

• Owner adviceSmoke CADR firstThe hardest pollutant to capture, so the most honest number. Two-thirds of your room's square footage, minimum.
• Owner adviceAHAM verificationUnverified CADR is self-reported marketing. AHAM Verifide means an independent lab ran the test.
• Owner adviceBig CADR means big and loudPhysics is unforgiving — high airflow needs a big fan. Owners say buy the headroom, run it on medium.
• Go deeperWhat is CADR?The research behind the rules of thumb owners keep repeating.

• AirFanta$179.99AirFanta 3Pro3.3/5★★★★★3.3 out of 5 stars(2)iCARBCADR & airflow3229 sq ft“This air purifier is what I recommend to everyone. It has the highest CADR per dollar for any option that you don't have to make yourself.”
• Medify$148.99Medify MA-253.6/5★★★★★3.6 out of 5 stars(1)iEnergy StarCARBCADR & airflowPet hair & dander500 sq ft“The Medify Air MA-25 has a larger coverage area (up to 1,000 sq. ft.) and a higher CADR of 230, making it great for slightly bigger rooms.”
• PuroAir$259.99PuroAir 4003.6/5★★★★★3.6 out of 5 stars(1)iCARBCADR & airflowPet hair & dander2000 sq ft“Compared to others, the PuroAir 400 stands out with its medical grade HEPA filter, which is more powerful than standard filters in many other models.”
• Winix$259.99Winix T8103.5/5★★★★★3.5 out of 5 stars(1)iAHAM VerifideEnergy StarCARBCADR & airflowQuiet operation418 sq ft“I love my WINIX T810. It’s quite powerful, but so quiet I can run it 24/7.”
• WinixPrice variesWinix 5300-23.3/5★★★★★3.3 out of 5 stars(1)iAHAM VerifideEnergy StarCARBCADR & airflowValue for money360 sq ft“a winix 5300 or 535s are the sweet spot for price and CADR.”
• Smart AirPrice variesSmart Air Blast3.2/5★★★★★3.2 out of 5 stars(1)iAuto mode & sensorsCADR & airflow1400 sq ft“I think I’m going with the SmartAir Blast as you recommended. The CADR is really good and it seems like it is so quiet compared to everything else.”
• WinixPrice variesWinix Pro3.0/5★★★★★3.0 out of 5 stars(1)iCADR & airflow“An Australian based recommendation that I use is the Winix Pro. It has a CADR of 470m3 per hour.”
• IKEAPrice variesIKEA STARKVIND2.8/5★★★★★2.8 out of 5 stars(1)iAHAM VerifideCADR & airflowNoise215 sq ft“The Starkvind offers a high number of fan speed settings, allowing for low noise levels while maintaining sufficient airflow.”

Real quotes from Reddit threads discussing cadr & airflow. Positive feedback first, followed by warnings and complaints.

• ★★★★★5.0 out of 5 starsr/BuyAirPurifier

  “Compared to others, the PuroAir 400 stands out with its medical grade HEPA filter, which is more powerful than standard filters in many other models.”

  Said about the PuroAir 400 by PuroAirRead the thread
• ★★★★★5.0 out of 5 starsr/ZeroCovidCommunity

  “This air purifier is what I recommend to everyone. It has the highest CADR per dollar for any option that you don't have to make yourself.”

  Said about the AirFanta 3Pro by AirFantaRead the thread
• ★★★★★5.0 out of 5 starsr/BuyItForLife

  “Much higher clean-air delivery rate (CADR) than mainstream air purifier brands.”

  Said about the AirFanta 3Pro by AirFantaRead the thread
• ★★★★★5.0 out of 5 starsr/BuyAirPurifier

  “The Medify Air MA-25 has a larger coverage area (up to 1,000 sq. ft.) and a higher CADR of 230, making it great for slightly bigger rooms.”

  Said about the Medify MA-25 by MedifyRead the thread
• ★★★★★5.0 out of 5 starsr/BuyItForLife

  “a winix 5300 or 535s are the sweet spot for price and CADR.”

  Said about the Winix 5300-2 by WinixRead the thread
• ★★★★★5.0 out of 5 starsr/ZeroCovidCommunity

  “I think I’m going with the SmartAir Blast as you recommended. The CADR is really good and it seems like it is so quiet compared to everything else.”

  Said about the Smart Air Blast by Smart AirRead the thread