AO Smith vs. Aquasana: Understanding the Brand Relationship
AO Smith acquired Aquasana in 2016 but continues to market both brands separately. Aquasana products are sold through aquasana.com, Amazon, and select retailers; AO Smith-branded filters are sold through Lowe's. The product lines overlap but are distinct: Aquasana has the broader NSF certification scope (EQ-1000 with NSF 42, 53, 401); AO Smith branded products are designed for in-store retail simplicity. For the broadest NSF certification coverage, buy Aquasana. For the convenience of Lowe's in-store purchase and return, buy AO Smith branded products. Both carry the same parent company warranty and customer service infrastructure.