VettedClean

Aquasana

Aquasana AQ-5300+ Max Flow Under-Sink

Three-stage under-sink filter. NSF/ANSI P473 certified for PFOA + PFOS reduction.

Aquasana AQ-5300+ Max Flow three-stage under-sink filter

$200

NSF/ANSI P473NSF/ANSI P473NSF/ANSI 401NSF/ANSI 401

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Our take

Aquasana's AQ-5300+ is one of the most accessible NSF/ANSI P473-certified under-sink filters short of reverse osmosis. Three-stage filtration, a dedicated faucet, and a manufacturer-published filter life of approximately 600 gallons per filter set (the brand estimates roughly a year for a 2-person household). The product carries NSF/ANSI P473 certification specifically for PFOA + PFOS reduction — meaningful for readers who want third-party certification rather than only manufacturer-commissioned testing. Installation is documented as more involved than a pitcher and less involved than under-sink RO.

Documented strengths

  • NSF/ANSI P473 certified for PFAS
  • Long filter life (~600 gallons)
  • Faucet included, no electricity

Documented trade-offs

  • Permanent installation
  • Requires room under sink
  • Filter replacements are bundled (3 stages)

Citations

  1. [1]NSF/ANSI P473 certified for PFOA and PFOS reduction — Aquasana AQ-5300+ product page