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Air purifiers ยท Buying guide

Best low-energy air purifiers for rooms of 300 to 500 sq ft

#1 is the Rainbow Luggable XXL. Of the 56 models that fit, it uses the least electricity (75 kWh).

The list

  1. 1

    Rainbow Luggable XXL

    • Electricity per year75 kWh
    • Room size it is rated for474 sq ft
    • Clean air per minute: smoke306 cfm
    • Ozone it gives off0 ppb
  2. 2

    Rainbow Luggable Ultra

    • Electricity per year93 kWh
    • Room size it is rated for358 sq ft
    • Clean air per minute: smoke231 cfm
    • Ozone it gives off0 ppb
  3. 3

    DREAME CVF20B

    • Electricity per year149 kWh
    • Room size it is rated for347 sq ft
    • Clean air per minute: smoke224 cfm
    • Ozone it gives off0 ppb
  4. 4

    Clorox TYPE AP30

    • Electricity per year169 kWh
    • Room size it is rated for319 sq ft
    • Clean air per minute: smoke206 cfm
    • Ozone it gives off0 ppb
  5. 5

    Govee H7122

    • Electricity per year175 kWh
    • Room size it is rated for326 sq ft
    • Clean air per minute: smoke210 cfm
    • Ozone it gives off0 ppb
  6. 6

    GoveeLife H7122

    • Electricity per year175 kWh
    • Room size it is rated for326 sq ft
    • Clean air per minute: smoke210 cfm
    • Ozone it gives off0 ppb
  7. 7

    WOOZOO APF-25

    • Electricity per year179 kWh
    • Room size it is rated for305 sq ft
    • Clean air per minute: smoke197 cfm
    • Ozone it gives off0 ppb
  8. 8

    Blueair model 4412311000

    • Electricity per year181 kWh
    • Room size it is rated for498 sq ft
    • Clean air per minute: smoke321 cfm
    • Ozone it gives off1 ppb
  9. 9

    Blueair model 3431101000

    • Electricity per year182 kWh
    • Room size it is rated for378 sq ft
    • Clean air per minute: smoke244 cfm
    • Ozone it gives off1 ppb
  10. 10

    Honeywell HPA4300B

    • Electricity per year185 kWh
    • Room size it is rated for355 sq ft
    • Clean air per minute: smoke229 cfm
    • 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 of 300 to 500 sq ft. Ranked by electricity per year (lower 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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