Use EveryDrop Filter 1 / EDR1RXD1 or a verified compatible replacement. Whirlpool places the filter inside this refrigerator model.
Correct replacement
Whirlpool’s model page identifies EDR1RXD1 as the water-filter part number for WRS571CIHZ.
Filter location
The same specifications list the water-filter location as interior.
Compatible alternatives
Compatible EDR1RXD1 cartridges can reduce recurring cost, but fit alone does not guarantee equivalent contaminant claims.
Best retailer strategy
Compare the exact cartridge across replacement-filter specialists rather than buying the first generic listing.
How to verify fit before buying Whirlpool WRS571CIHZ Water Filter: Which Filter Fits?
Treat compatibility as a model-number decision, not a shape-matching exercise. Start with the appliance or system model label, then confirm the exact cartridge or replacement code listed by the manufacturer. Similar-looking filters can use different tabs, seals, RFID features or bypass interfaces, so a cartridge that appears to fit can still leak, restrict flow or fail to lock correctly.
For aftermarket replacements, separate physical compatibility from filtration performance. A seller can correctly state that a cartridge fits a refrigerator while the contaminant-reduction scope differs from the original filter. If lead, cysts, PFAS or another health-related claim matters, verify the exact replacement model in the current certification or performance documentation rather than assuming an OEM-equivalent claim set.
Compare recurring cost, availability and replacement risk
Replacement products should be evaluated over several service cycles. Multiply the current cartridge price by the realistic replacement frequency, add shipping, and check whether the same model is consistently stocked. A low first-purchase price is less useful if the cartridge becomes difficult to source or if replacement intervals are short.
Watch for vague phrases such as “uses certified media” or “tested to a standard.” Finished-product certification is stronger evidence than a statement about one component. For marketplace listings, clear manufacturer identity, exact model numbers, return policies and traceable certification reduce the risk of counterfeit-style or poorly fitting replacements.