Air purifiers and water filters, scored on proof - not marketing.
We score air purifiers and water filters from published specs and real certifications - then compute the one number manufacturers hide: total cost of ownership. Annual filter cost for air, cost per gallon for water. A claim is not a certification, and we say so.
Air purifiers
See all →Coway Airmega AP-1512HH Mighty
AHAM-verified, true sealed HEPA, cheap to run, no ozone. The honest benchmark.
Levoit Core 300S
A compact smart HEPA purifier for bedrooms and small-to-medium rooms with app and voice control.
Levoit Vital 200S
A smart medium-room purifier with a pet-hair intake, near-silent sleep mode, and AHAM-verified performance.
Water filters
See all →Culligan US-EZ-4 Under-Sink
An under-sink filter genuinely IAPMO certified to NSF/ANSI 42, 53 and 401 for lead, cysts, VOCs, mercury and PFOA/PFOS.
Brita Elite Pitcher (10-Cup)
A pour-through pitcher whose Elite filter is certified to reduce lead, mercury, cadmium and more, with a long 120-gallon cartridge.
Aquasana AQ-5200 Under-Sink
Certified for lead and PFAS, cheap per gallon, marketing matches the certified scope.
A claim is not a certification
The single most useful thing we can teach you: "tested to NSF standards" is not the same as "NSF certified." One is a lab result a brand arranged once; the other is an audited program you can verify in a public database. It is why a popular filter can score near the bottom here.
Read the guide →