Best Air Purifiers for Large Rooms Ranked

15 air purifiers with a certified smoke CADR of 250 cfm or more.

Last updated: October 22, 2026

A large purifier is for an open living area, a basement or a room over 390 square feet, and for wildfire smoke, where more clean air per minute makes the biggest difference. Larger units are usually the cheapest per cfm and often quieter for the air they move, since they can run a big fan slowly. Filter costs climb with size, so check the yearly figure.

Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Full ranking 15

  1. Amazon Basics Air Purifier AP5110-UL
    #1 of 154.0Full review

    A large-room purifier for living areas up to about 500 sq ft, at a lower price per cfm than most big-name rivals. Skip it if you want to avoid ionizers.

    Amazon $170.97
    $170.97
    324502 sq ft$74.46/year-
  2. Honeywell InSight HPA5300
    #2 of 153.9Full review

    A large-room HEPA purifier with auto mode and a long warranty, for buyers who want Honeywell’s filters without an app.

    Amazon $228.99
    $228.99
    323500 sq ft$84.99/year-
  3. Blueair Blue Pure 311i Max
    #3 of 153.8Full review

    A mid-size, efficient purifier with app control for bedrooms and living rooms up to about 440 sq ft.

    Amazon $229
    $229
    283439 sq ft$89.98/year50
  4. Dreo Macro Max AS
    #4 of 153.8Full review

    A strong-value smart purifier for large rooms up to about 450 sq ft.

    Amazon $159.99
    $159.99
    294456 sq ft$79.98/year-
  5. Winix 5520
    #5 of 153.7Full review

    A living-room purifier with strong airflow and low filter costs at Amazon’s price. Turn PlasmaWave off if you’re sensitive to ozone.

    Amazon $179.99
    $179.99
    253392 sq ft$47.49/year-
  6. Blueair Blue Pure 211i Max
    #6 of 153.7Full review

    A large-room purifier with very high certified CADR and low running costs, for open-plan living areas.

    Amazon $349
    $349
    435674 sq ft$139.98/year53
  7. Levoit Vital 200S
    #7 of 153.7Full review

    A good-value living-room purifier for pet owners, with about the same airflow as pricier rivals.

    Amazon $169.99
    $169.99
    250388 sq ft$49.99/year54
  8. Levoit Core 600S
    #8 of 153.6Full review

    For big living rooms and open-plan spaces where a mid-size unit can’t keep up. Smaller rooms are better served by the Core 400S.

    Amazon $259.97
    $259.97
    391606 sq ft$119.98/year55
  9. Winix T810
    #9 of 153.6Full review

    An efficient round purifier for a large bedroom or living room. Check the T830 on Amazon when the T810 is out of stock.

    Winix $259.99
    $259.99
    270418 sq ft$74.99/year-
  10. Honeywell HPA300
    #10 of 153.4Full review

    A proven, no-frills large-room HEPA purifier for anyone who wants high certified CADR without an app.

    Amazon $234.95
    $234.95
    300465 sq ft$84.99/year-
  11. Coway Airmega 350
    #11 of 153.4Full review

    For big rooms where you want high certified airflow and low running costs without app features.

    Amazon $339
    $339
    360558 sq ft$79/year54.7
  12. Alen BreatheSmart 75i
    #12 of 153.3Full review

    A premium large-room purifier with long-lasting filters, for buyers willing to pay for quiet and a subscription-backed guarantee.

    Amazon $699.59
    $699.59
    370574 sq ft$99/year51
  13. Levoit EverestAir
    #13 of 153.0Full review

    A premium Levoit for a large room where floor space is tight. The Core 600S cleans a bit more air for less money if you have the floor space.

    Amazon $499.99
    $499.99
    354549 sq ft$99.99/year56
  14. Medify MA-112
    #14 of 152.9Full review

    A very high-CADR purifier for large open spaces, with high filter costs to match.

    Amazon $594.99
    $594.99
    561869 sq ft$277.98/year70
  15. AirDoctor AD4000
    #15 of 152.7Full review

    A large-room purifier with strong certified CADR and odor filtration, but high filter costs.

    Amazon $679
    $679
    370574 sq ft$239.90/year-