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Air purifiers ยท Buying guide

Best air purifiers for allergies in rooms of 300 to 500 sq ft

#1 is the Rainbow Luggable XXL. Of the 56 models that fit, it clears pollen from the air fastest (436 cfm).

The list

  1. 1

    Rainbow Luggable XXL

    • Clean air per minute: pollen436 cfm
    • Room size it is rated for474 sq ft
    • Clean air per minute: smoke306 cfm
    • Electricity per year75 kWh
  2. 2

    Midea KJ500G-JA32

    • Clean air per minute: pollen371 cfm
    • Room size it is rated for459 sq ft
    • Clean air per minute: smoke296 cfm
    • Electricity per year292 kWh
  3. 3

    PELONIS KJ500G-JA32

    • Clean air per minute: pollen371 cfm
    • Room size it is rated for459 sq ft
    • Clean air per minute: smoke296 cfm
    • Electricity per year292 kWh
  4. 4

    Blueair model 3332111100

    • Clean air per minute: pollen365 cfm
    • Room size it is rated for439 sq ft
    • Clean air per minute: smoke283 cfm
    • Electricity per year193 kWh
  5. 5

    Coway Airmega 300

    • Clean air per minute: pollen360 cfm
    • Room size it is rated for488 sq ft
    • Clean air per minute: smoke315 cfm
    • Electricity per year314 kWh
  6. 6

    Coway AP-2023K

    • Clean air per minute: pollen358 cfm
    • Room size it is rated for468 sq ft
    • Clean air per minute: smoke302 cfm
    • Electricity per year277 kWh
  7. 7

    MEDIFY AIR MA-50-V3.0

    • Clean air per minute: pollen356 cfm
    • Room size it is rated for409 sq ft
    • Clean air per minute: smoke264 cfm
    • Electricity per year252 kWh
  8. 8

    Dreo DR-HAP003S

    • Clean air per minute: pollen336 cfm
    • Room size it is rated for456 sq ft
    • Clean air per minute: smoke294 cfm
    • Electricity per year282 kWh
  9. 9

    Sharp AirMac X7

    • Clean air per minute: pollen332 cfm
    • Room size it is rated for473 sq ft
    • Clean air per minute: smoke305 cfm
    • Electricity per year299 kWh
  10. 10

    Cuckoo CAC-K1910FW

    • Clean air per minute: pollen332 cfm
    • Room size it is rated for474 sq ft
    • Clean air per minute: smoke306 cfm
    • Electricity per year325 kWh

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 of 300 to 500 sq ft. Ranked by clean air per minute: pollen (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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