Best low-energy air purifiers for rooms over 500 sq ft

The list

1. 1

   Rainbow Luggable XL Ultra

   • Electricity per year81 kWh
   • Room size it is rated for516 sq ft
   • Clean air per minute: smoke333 cfm
   • Ozone it gives off0 ppb
2. 2

   Rainbow Brisk Box Ultra

   • Electricity per year94 kWh
   • Room size it is rated for574 sq ft
   • Clean air per minute: smoke370 cfm
   • Ozone it gives off0 ppb
3. 3

   Blueair model 3631101000

   • Electricity per year210 kWh
   • Room size it is rated for552 sq ft
   • Clean air per minute: smoke356 cfm
   • Ozone it gives off1 ppb
4. 4

   Blueair model 3432111100

   • Electricity per year227 kWh
   • Room size it is rated for525 sq ft
   • Clean air per minute: smoke339 cfm
   • Ozone it gives off2 ppb
5. 5

   Blueair model 4312111000

   • Electricity per year235 kWh
   • Room size it is rated for705 sq ft
   • Clean air per minute: smoke455 cfm
   • Ozone it gives off3 ppb
6. 6

   Coway AP-3018B

   • Electricity per year235 kWh
   • Room size it is rated for640 sq ft
   • Clean air per minute: smoke413 cfm
   • Ozone it gives off0 ppb
7. 7

   Amazon Basics AP5110-UL

   • Electricity per year239.5 kWh
   • Room size it is rated for502 sq ft
   • Clean air per minute: smoke324 cfm
   • Ozone it gives off0 ppb
8. 8

   Blueair model 3613111100

   • Electricity per year259 kWh
   • Room size it is rated for687 sq ft
   • Clean air per minute: smoke443 cfm
   • Ozone it gives off2 ppb
9. 9

   Bosch Air 6000

   • Electricity per year289 kWh
   • Room size it is rated for525 sq ft
   • Clean air per minute: smoke339 cfm
   • Ozone it gives off0 ppb
10. 10

    IQAir ATEM E

    • Electricity per year295 kWh
    • Room size it is rated for572 sq ft
    • Clean air per minute: smoke369 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 over 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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