ASR211 is currently $33.99 with a 12-month interval; ASR212-400G is $69.99 with a two-year interval. On those list prices, the system annualizes to about $69 per year in core cartridges.
Stage 1: ASR211
ASR211 is the first-stage cartridge and is listed for 12 months.
Stage 2: ASR212-400G
ASR212-400G is the dedicated 400 GPD membrane cartridge for PD400 and is listed for two years.
Current pricing
Frizzlife currently lists ASR211 at $33.99 and ASR212-400G at $69.99.
Annualized cost
Using the nominal replacement schedule, those two cartridges work out to about $69 per year before promotions and tax.
How to verify fit before buying Frizzlife PD400 Replacement Filters: ASR211 + ASR212-400G
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.