PureAirScout
A HEPA air purifier running in a bright, sunlit living room while someone reads nearby

Independent research · real tradeoffs

The right air purifier, chosen with actual research.

We dig through CADR ratings, spec sheets, filter costs, and thousands of owner reports — so you can match a purifier to your room and your air, and skip the marketing hype.

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Editor's top pick: Coway Airmega AP-1512HH Mighty

Independent reviewsNot influenced by brands or retailersReal-world researchSpecs, manuals & verified owner feedbackNo paid rankingsWe don't accept payment for placementsReader-focusedAnswers to real air-purifier questions

Start with what you need

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.

Air Quality Monitors

The instruments that tell you whether your air is actually clean — measuring PM2.5, VOCs, CO2, and humidity so you know when to run a purifier, open a window, or track down a source. A monitor turns 'the air feels stuffy' into a number you can act on.

Replacement Filters

The filters that keep a purifier actually purifying. We cover genuine and compatible replacement filters, what a year of filters really costs per model, and when a third-party filter is a smart saving versus a false economy.

Best HEPA air purifiers

All purifiers
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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Compare top air purifiers

Build your own comparison
ModelCADR (smoke)CoverageTrue HEPASmart appScore
IQAir HealthPro Plus—1125 sq ft9.0Review
Coway Airmega 400328 CFM508 sq ft8.9Review
AirDoctor AD5500i556 CFM862 sq ft8.9Review
Coway Airmega Mighty2240 CFM372 sq ft8.9Review
Coway Airmega AP-1512HH Mighty233 CFM361 sq ft8.8Review
Winix 5510253 CFM392 sq ft8.8Review
A HEPA air purifier cleaning the air in a bright modern home

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Best-of picks

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Get the size and the running cost right

Room-size to CADR, air changes per hour, electricity cost, and the real multi-year filter cost — free calculators that turn spec sheets into decisions.

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Guides worth your time

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Every review states its sources. If we haven't hands-on tested a product, the page says so — no fake lab coats. We don't invent specs, prices, or warranty terms, and missing data shows as “not confirmed,” not a guess. Affiliate commissions never change a score.

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