The Best Under-Sink Water Filter

By Wirecutter
Aquasana AQ-5200
"Our pick: Exceptional, affordable under-sink filtration"
A.O. Smith AO-US-200
"Runner-up: Same performance, different name"
Aquasana AQ-5300+ Max Flow
"Upgrade pick: Higher flow and capacity"
Aquasana Claryum Direct Connect
"Also great: High water flow, easy installation"
Filtrete 4US-MAXL-S01
"Budget pick: Lower cost, fewer certifications"