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Air purifiers ยท Buying guide

Best air purifiers for rooms up to 300 sq ft rated most efficient

#1 is the Blueair model 4512311000. Of the 52 models that fit, it cleans smoke from the air fastest (161 cfm).

The list

  1. 1

    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
  2. 2

    Blueair model 3132111100

    • Clean air per minute: smoke153 cfm
    • Room size it is rated for237 sq ft
    • Electricity per year103.3 kWh
    • Ozone it gives off3 ppb
  3. 3

    Midea KJ250G-Z42

    • Clean air per minute: smoke146 cfm
    • Room size it is rated for226 sq ft
    • Electricity per year131 kWh
    • Ozone it gives off1 ppb
  4. 4

    PELONIS KJ250G-Z42

    • Clean air per minute: smoke146 cfm
    • Room size it is rated for226 sq ft
    • Electricity per year131 kWh
    • Ozone it gives off1 ppb
  5. 5

    PRO AIRE 1PAPUV15

    • Clean air per minute: smoke146 cfm
    • Room size it is rated for226 sq ft
    • Electricity per year131 kWh
    • Ozone it gives off1 ppb
  6. 6

    AROEVE DH-JH021US-A00

    • Clean air per minute: smoke138 cfm
    • Room size it is rated for214 sq ft
    • Electricity per year101 kWh
    • Ozone it gives off0 ppb
  7. 7

    Aeocky LunaPure-EJH001

    • Clean air per minute: smoke137 cfm
    • Room size it is rated for212 sq ft
    • Electricity per year109 kWh
    • Ozone it gives off0 ppb
  8. 8

    DREAME CVM10B

    • Clean air per minute: smoke137 cfm
    • Room size it is rated for212 sq ft
    • Electricity per year128 kWh
    • Ozone it gives off0 ppb
  9. 9

    MegaLight AP-HCE99-WT

    • Clean air per minute: smoke136 cfm
    • Room size it is rated for211 sq ft
    • Electricity per year89 kWh
    • Ozone it gives off0 ppb
  10. 10

    Aerus F185B

    • Clean air per minute: smoke127 cfm
    • Room size it is rated for197 sq ft
    • Electricity per year109 kWh
    • Ozone it gives off1 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 and rated most efficient. 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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