PureAirScout

HEPA Air Purifiers

Portable HEPA air purifiers for bedrooms, living rooms, and open-plan spaces — the core of clean indoor air. We compare them on the number that actually matters (CADR versus room size), filtration quality, real filter cost over time, and how loud they are on the setting you'll actually use.

Showing 16 of 16

IQAir HealthPro Plus XE air purifier
Premium pick9.0/10

IQAir

IQAir HealthPro Plus

Best over $1,000

IQAir's HealthPro Plus XE pairs HyperHEPA with a 5 lb V5-Cell gas cartridge and adds Wi-Fi, a PM2.5 sensor and Smart Mode. No CADR is published.

  • 1125 sq ft
  • $1,199.99 at IQAir (HealthPro Plus XE)
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Coway Airmega 400 air purifier
Premium pick8.9/10

Coway

Coway Airmega 400

Best premium large-room

A refined, high-CADR large-room purifier with a genuine dual True HEPA + carbon system and a trustworthy auto mode.

  • 328 CFM CADR
  • 508 sq ft
  • $400–$450 typical street ($649 list at Coway; Wi-Fi 400S $749 list)
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AirDoctor AD5500i air purifier
Premium pick8.9/10

AirDoctor

AirDoctor AD5500i

Best large-room smart pick

A high-CADR, app-connected big-room purifier with an UltraHEPA filter and a serious dual-action gas/VOC stage — sold direct.

  • 556 CFM CADR
  • 862 sq ft
  • $999 at AirDoctor (often on sale)
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Coway Airmega Mighty2 AP-1512N air purifier
8.9/10

Coway

Coway Airmega Mighty2

Best quiet mid-size pick

Coway's 2026 Mighty successor: same 240 CFM class, but quieter, no ionizer, a laser PM sensor and a one-piece $70 filter. Fits rooms to ~370 sq ft.

  • 240 CFM CADR
  • 372 sq ft
  • $230–$270
Read review
Winix 5510 air purifier
8.8/10

Winix

Winix 5510

Best smart mid-range

A smart, app-connected Winix with True HEPA, carbon, and strong coverage — the step up from the 5500-2 for people who want auto scheduling.

  • 253 CFM CADR
  • 392 sq ft
  • $180–$200
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Levoit Core 600S air purifier
8.8/10

Levoit

Levoit Core 600S

Best value for large rooms

Large-room CADR of 391 CFM with full smart features, at a price well below the premium large-room set.

  • 391 CFM CADR
  • 606 sq ft
  • $280–$320
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Blueair Blue Pure 211i Max air purifier
8.8/10

Blueair

Blueair Blue Pure 211i Max

Best low-wattage big-room smart pick

A 435 CFM big-room purifier (about 674 sq ft) that sips 46 W and adds auto mode and an app over the 211+. Its ionizer stage can't be turned off.

  • 435 CFM CADR
  • 674 sq ft
  • $230–$350 ($349.99 list; frequent sales)
Read review
8.8/10

Winix

Winix 5530

Best Winix for app control in white

The white, 2026 version of Winix's 5510: same 253 CFM AHAM rating, same Filter Q, same 65 W rating and Wi-Fi app. Sized for ~390 sq ft.

  • 253 CFM CADR
  • 392 sq ft
  • $180–$220
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Levoit Vital 200S-P air purifier
8.7/10

Levoit

Levoit Vital 200S-P

Best Levoit for pet hair

A 250 CFM smart Levoit with a washable pre-filter and Pet Mode, sized for pet-hair rooms up to about 388 sq ft.

  • 250 CFM CADR
  • 388 sq ft
  • $130–$180
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Blueair Blue Signature Large air purifier
8.7/10

Blueair

Blueair Blue Signature Large

Best design-led big-room purifier

Blueair's table-top purifier: 455 CFM smoke CADR (about 705 sq ft), pelleted carbon and a laser sensor, at a design premium over the 211i Max.

  • 455 CFM CADR
  • 705 sq ft
  • $340–$450 ($449.99 list; frequent sales)
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Winix 5500-2 air purifier
Best budget8.4/10

Winix

Winix 5500-2

Best budget for larger rooms

More coverage than the usual budget pick, with a washable carbon filter that keeps running costs low.

  • 232 CFM CADR
  • 360 sq ft
  • $150–$170
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Levoit Core 400S-P air purifier
8.4/10

Levoit

Levoit Core 400S-P

Best round Levoit for mid-size rooms

The current Core 400S: a 231 CFM AHAM-verified smart cylinder for rooms up to about 358 sq ft, with a laser PM2.5 sensor.

  • 231 CFM CADR
  • 358 sq ft
  • $160–$220
Read review
Shark NeverChange Air Purifier MAX HP302 tower air purifier
8.1/10

Shark

Shark NeverChange Air Purifier MAX

Best for skipping yearly filter changes

Shark's HP302 trades yearly filter buys for one long-life filter. Energy Star lists 204 CFM smoke CADR, so size it for ~316 sq ft, not 1,400.

  • 204 CFM CADR
  • 316 sq ft
  • $240–$400 ($399.99 list; often $280–$300 on sale)
Read review

What we look for in an air purifier

  • CADR versus the room it's meant for
  • Genuine True HEPA (H13), not "HEPA-type"
  • A real activated-carbon stage for gases and odors
  • Ozone-free operation in normal mode
  • Filter life and true annual replacement cost
  • Noise on the setting you'd actually run
  • Auto mode and air-quality sensor accuracy
  • Warranty length and parts availability
  • Verified owner sentiment at scale
  • Value against the price tier

Full criteria in how we review. Specs change — always confirm details with the retailer before buying.

What to know before you buy

CADR versus room size is the whole game

The single most useful number on an air purifier is its CADR (Clean Air Delivery Rate, in CFM) — how much clean air it actually produces. AHAM's rule of thumb is a smoke/dust CADR of at least two-thirds of your room's square footage; for wildfire smoke, aim for a CADR roughly equal to the room's square footage. A beautiful, expensive purifier that's underpowered for your room will disappoint; a plain one with the right CADR will not.

The filter is the real price

The sticker price is only the down payment. True HEPA and activated-carbon filters need replacing every 6–12 months, and across brands that runs anywhere from about $30 to well over $150 a year. We list the replacement cost on every review because a cheap purifier with pricey filters can cost more over three years than a pricier one with affordable filters.

Watch out for ozone and 'HEPA-type'

Two things to avoid: purifiers whose main mechanism is an ionizer or 'ozone generator' (ozone is a lung irritant), and filters labeled 'HEPA-type' or 'HEPA-like' rather than True HEPA (H13). True HEPA captures 99.97% of particles at 0.3 microns; the look-alikes don't have to meet that bar. Every purifier we recommend uses a genuine HEPA filter and is ozone-free in its normal mode.

Frequently asked questions

What size air purifier do I need for my room?

Match CADR to your room. Measure the room's square footage and look for a smoke/dust CADR of at least two-thirds of that number for everyday air, or roughly equal to it if wildfire smoke is a concern. Our Room-Size to CADR calculator does the math for you and shows purifiers that fit.

Do air purifiers actually work?

Yes, for airborne particles. A True HEPA purifier sized correctly for the room measurably reduces dust, pollen, pet dander, smoke, and other fine particulates. They are not a cure-all — they don't remove gases well without a carbon stage, and they can't fix a source problem like an active mold colony — but for particle pollution the effect is real and well documented.

How often do I need to replace the filter?

Most True HEPA filters last 6–12 months depending on use and air quality; carbon filters and washable pre-filters vary. Running on a higher setting or in dusty/smoky conditions shortens filter life. We list each model's stated filter life and rough annual replacement cost so there are no surprises.

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