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Air purifiers ยท Buying guide

Best air purifiers for rooms up to 300 sq ft

#1 is the Atmosphere BLUE 316500K. Of the 115 models that fit, it cleans smoke from the air fastest (192 cfm).

The list

  1. 1

    Atmosphere BLUE 316500K

    • Clean air per minute: smoke192 cfm
    • Room size it is rated for298 sq ft
    • Electricity per year184 kWh
    • Ozone it gives off0 ppb
  2. 2

    Coway AP-1125G

    • Clean air per minute: smoke185 cfm
    • Room size it is rated for287 sq ft
    • Electricity per year195 kWh
    • Ozone it gives off0 ppb
  3. 3

    Levoit LAP-C311S-WUSR

    • Clean air per minute: smoke175 cfm
    • Room size it is rated for271 sq ft
    • Electricity per year132 kWh
    • Ozone it gives off0 ppb
  4. 4

    AirDoctor AD1500

    • Clean air per minute: smoke170 cfm
    • Room size it is rated for264 sq ft
    • Electricity per year166 kWh
    • Ozone it gives off3 ppb
  5. 5

    Blueair model 4512311000

    • Clean air per minute: smoke161 cfm
    • Room size it is rated for250 sq ft
    • Electricity per year110 kWh
    • Ozone it gives off1 ppb
  6. 6

    Levoit LAP-C341S-WUSZ

    • Clean air per minute: smoke161 cfm
    • Room size it is rated for250 sq ft
    • Electricity per year145 kWh
    • Ozone it gives off0 ppb
  7. 7

    Greenlite G-Pure1-22W

    • Clean air per minute: smoke158 cfm
    • Room size it is rated for245 sq ft
    • Electricity per year129 kWh
    • Ozone it gives off0 ppb
  8. 8

    Dreo DR-HAP009

    • Clean air per minute: smoke158 cfm
    • Room size it is rated for245 sq ft
    • Electricity per year162 kWh
    • Ozone it gives off0 ppb
  9. 9

    Dreo DR-HAP009S

    • Clean air per minute: smoke158 cfm
    • Room size it is rated for245 sq ft
    • Electricity per year162 kWh
    • Ozone it gives off0 ppb
  10. 10

    Bosch Air 4000

    • Clean air per minute: smoke156 cfm
    • Room size it is rated for242 sq ft
    • Electricity per year124 kWh
    • Ozone it gives off0 ppb

How this list is made

We start from every air purifier certified by ENERGY STAR and sold in the US (206 models). Models shown: rated for rooms up to 300 sq ft. Ranked by clean air per minute: smoke (higher is better). Ties go to the one that uses less electricity.

Data: ENERGY STAR certified products list, checked 2026-11-09. We have not tested these products ourselves.

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