Whirlpool Water Filtration: Under-Sink RO and Refrigerator Filters
Whirlpool (Benton Harbor, Michigan) sells water treatment products through its Whirlpool Water brand -- including the WHER25 under-sink RO (25 GPD, 3-stage, $130--$200), the WHCF-DWHBB whole-home filter, and Whirlpool refrigerator water filter cartridges (W10295370, EDR1RXD1). Like GE, Whirlpool's refrigerator filter business is substantial -- Whirlpool refrigerators (including Maytag and KitchenAid models) represent a significant share of US refrigerator sales, driving high demand for OEM replacement filters.
Whirlpool WHER25 Under-Sink RO
The Whirlpool WHER25 ($130--$200) is an entry-level 3-stage RO system with 25 GPD production -- the lowest GPD of any mainstream brand RO system. At 3 stages (sediment, carbon, RO membrane only), it lacks a post-carbon polishing stage found in 5-stage systems. For small households (1--2 people) with minimal RO water consumption, the WHER25 is functional. For households of 3+ or those who use RO water for cooking and ice, the 25 GPD output and absent post-polish stage make it a compromise vs. the APEC ROES-50 (50 GPD, 5 stages, $200--$260).
Whirlpool Refrigerator Water Filters
Whirlpool OEM refrigerator filters: W10295370 / EDR1RXD1 (EveryDrop Filter 1, fits most French-door Whirlpool, Maytag, Amana models); W10413645A / EDR2RXD1 (Filter 2, fits select side-by-side); W10193691 / EDR3RXD1 (Filter 3, fits select bottom-mount). All EveryDrop filters are NSF 42 and 53 certified. OEM price: $30--$50 per filter (6-month replacement). EveryDrop is Whirlpool's refrigerator filter brand -- sold at all major retailers including Walmart, Home Depot, Target, and Amazon.