At current list prices, ASR211 costs $33.99 annually and ASR212-500G costs $76.99 every two years, for an annualized core-filter cost of about $72.50.
ASR211 first stage
ASR211 is shared across several Frizzlife tankless systems and carries a 12-month nominal interval.
ASR212-500G membrane
ASR212-500G is specific to PD500 and carries a two-year nominal interval.
Current list prices
Frizzlife currently lists ASR211 at $33.99 and ASR212-500G at $76.99.
Annualized cost
Using the stated intervals, core replacement cost is about $72.50 per year before discounts and tax.
How to verify fit before buying Frizzlife PD500 Replacement Filters: ASR211 + ASR212-500G
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.