Research-backed guide to choosing air purifiers that actually work. We demystify HEPA ratings, CADR scores, and smart features to help you breathe easier at home.
A true HEPA filter (H13 or higher) with adequate CADR for your room size is the foundation of effective air purification. Skip ionizers and UV claims—mechanical filtration has the strongest evidence for removing particles and allergens.
R3 Research Team
Evidence-Based Review Board
7+
Evidence sources
Authoritative sources tracked for air purifier.
15+
Scoring dimensions
Safety, efficacy, and value factors used in final scoring.
3
Ranked picks
Top recommendations shown with explicit tradeoffs.
Quarterly
Review cadence
Guides are revisited as evidence, recalls, and formulas shift.
Research-backed recommendations with clear tradeoffs

Coway
Best for
Sensitive skin, newborn routines, or medically cautious households.
Why we like it
Handles particles and some gases/odors, high CADR for open floor plans.
Trade-off
Larger footprint, higher filter replacement costs.
Safety weighting prioritizes ozone-free operation and verified filtration claims.
Efficacy scoring evaluates CADR per dollar, noise levels, and real-world usability.
Value scoring reflects filter replacement costs over 3 years of operation.
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Our multidisciplinary team of researchers, parents, and medical advisors dedicated to finding the safest products for your family.