Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter vs Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter
Head-to-head spec comparison to help you pick the right water filter for your needs.
Spec Winner
Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter
Wins on 2 of 3 spec categories
Spec-by-Spec Comparison
| Spec | Aquasana Claryum 3-Stage Max Flow Under Sink Water Filter | Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter |
|---|---|---|
| Form factor | Under-sink carbon | Refrigerator cartridge |
| Evidence tier | Strong certifier receipt | Strong genuine-cartridge receipt |
| Certifier | WQA / NSF-ANSI standards | NSF International / WQA sustainability certification |
| Certified standards | 42, 53, 401, P473-family claims | 42, 53, and 401 in PureSource Ultra |
| Primary claim receipt | Lead, chlorine, PFOA/PFOS-related, cyst, VOC, and emerging-compound claims require model/element match | Certified reductions apply to ULTRAWF in compatible PureSource Ultra refrigerator systems |
| Service cycle | Up to 800 gal / about 6 months | 200 gal / 3-6 months |
| Est. annual filters | 180 USD | 112 USD |
| Flow | 0.72 gpm | 0.5 gpm |
| Install burden | Dedicated faucet, under-sink | Push-to-lock refrigerator cartridge |
| TDS reduction | No | No |
| Price | $189.99 | $56 |
| Rating | 9.1/10 | 8.2/10 |
| 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
The Aquasana AQ-5300+ is the strongest launch pick when the buyer wants a serious under-sink carbon system with a clear certification trail. It is not a whole-water safety answer, but it is a clean first recommendation for certified lead, PFAS-related, chlorine, and emerging-compound claims when the current listing still matches the sold unit.
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.