Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter vs Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter
Compare installation fit, exact replacement elements, and source limits before choosing a water filter.
Different installation jobs
These products serve different installations. Confirm the installation and exact replacement element before choosing.
No overall winner is assigned. Prices and catalog estimates do not confirm fit or claim coverage. You can stop here and check the source without making a purchase.
How to check an exact model and claim sourceOptional shopping links. Affiliate links support this site; they do not confirm fit or claim coverage.
Fit and Evidence Comparison
| Decision detail | Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter | Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter |
|---|---|---|
| Installation job (catalog) | Under-sink carbon | Refrigerator cartridge |
| Exact replacement element | AQ-5300+R Legacy AQ-5300+; current AQ-6300M is a different model. | Frigidaire ULTRAWF Catalog identity only; exact variant and generation not currently verified. |
| Household fit | Fit not confirmed Check your actual installation, the exact sold model and the manufacturer manual before buying. A model source does not establish household fit. | Fit not confirmed Household fit is unconfirmed. Check the exact system, replacement element and manufacturer instructions before buying. |
| Evidence / source status | Manufacturer model-specific sources checked The AQ-5300+ performance sheet and installation manual were inspected. This is not a fresh independent WQA directory verification. | Current source verification missing Catalog snapshot only. No current primary-source verification is attached to this comparison; catalog wording does not establish current certification. |
| Source checked date | Only the sources and scope below were checked. | Not currently verified |
| Primary sources and limits | Read sources and unresolved details for AQ-5300+ Max Flow
| Current source verification missing. Use the exact manufacturer manual or certifier record before relying on a claim.
|
| Catalog snapshot date | Cost estimates retain the June 18, 2026 baseline. Newer model and service notes follow the dated sources above; prices are not current offers. | Cost estimates retain the June 18, 2026 baseline. Newer model and service notes follow the dated sources above; prices are not current offers. |
| Installation (catalog) | Dedicated faucet, under-sink | Push-to-lock refrigerator cartridge |
| Service cycle (catalog) | Up to 800 gal / about 6 months | 200 gal / 3-6 months |
| Annual filter estimate (catalog) | $180 / year | $112 / year |
| Flow (catalog) | 0.72 gpm | 0.5 gpm |
| Price (catalog; not a current offer) | $189.99 | $56 |
| Optional shopping links. Affiliate links support this site; they are not claim evidence. | Buy on Amazon | Buy on Amazon |
Pros & Cons
Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter
Pros
- Strong third-party certification story for NSF/ANSI 42, 53, and 401 claims when paired with the listed Claryum elements
- Under-sink faucet workflow gives better everyday flow than pitcher filters
- Keeps a non-RO footprint for buyers who do not want drain-line wastewater or tank maintenance
Cons
- Requires an under-sink install and a dedicated dispenser faucet
- Replacement cartridges are a meaningful annual cost
- Does not reduce TDS, which can confuse buyers expecting RO-style meter changes
Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter
Pros
- Official Frigidaire page names NSF/ANSI 42, 53, and 401 certification in PureSource Ultra systems
- 200-gallon/six-month service cycle gives a clear maintenance deadline
- Genuine-filter packaging and compatibility warnings are useful for avoiding counterfeit or wrong-family cartridges
Cons
- ULTRAWF is not interchangeable with every Frigidaire filter family
- Third-party compatible cartridges need separate receipts before carrying health-effect claims
- Annual cartridge cost is high for a fridge-only drinking-water path
Our Verdicts
Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter
Consider the legacy AQ-5300+ when its performance sheet addresses your concern and you can install a dedicated faucet. Match AQ-5300+R replacements and distinguish the newer AQ-6300M before ordering; the inspected manufacturer sheet is not a refreshed independent directory check.
Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter
Frigidaire ULTRAWF is a useful receipt-led cartridge pick because the official page gives standards, capacity, flow, and replacement cadence in one place. It should be recommended only to owners whose refrigerator specifically calls for ULTRAWF/PureSource Ultra.
Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter
Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter