Use Frigidaire FPPWFU02 / PWF-2 or a replacement explicitly documented for that connected-filter family. Do not substitute PWF-1.
Correct replacement filter
Frigidaire’s GRMC2273CF support page explicitly identifies FPPWFU02 PurePour Connect PWF-2 as the replacement filter.
PWF-2 is not PWF-1
The cartridge family differs from FPPWFU01, so do not shop by Frigidaire branding alone.
Replacement interval
Frigidaire documentation recommends replacement at least every six months and references a 125-gallon standard amount for PWF-2.
Compatible alternatives
Any aftermarket option should explicitly support FPPWFU02 / PWF-2 rather than only claiming generic Frigidaire compatibility.
How to verify fit before buying Frigidaire GRMC2273CF Water Filter: FPPWFU02 / PWF-2 Guide
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.