CuZn UC-200 Under Counter 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 | CuZn UC-200 Under Counter Water Filter | Frigidaire ULTRAWF PureSource Ultra Refrigerator Water Filter |
|---|---|---|
| Form factor | Under-sink direct connect | Refrigerator cartridge |
| Evidence tier | Good for aesthetic/material claims | Strong genuine-cartridge receipt |
| Certifier | NSF / ANSI standards claim trail | NSF International / WQA sustainability certification |
| Certified standards | 42 and 372 | 42, 53, and 401 in PureSource Ultra |
| Primary claim receipt | Taste/odor and lead-free material receipts are clearer than broad health-effect claims | Certified reductions apply to ULTRAWF in compatible PureSource Ultra refrigerator systems |
| Service cycle | Advertised up to 50,000 gal / 5 years | 200 gal / 3-6 months |
| Est. annual filters | 27 USD | 112 USD |
| Flow | 2 gpm | 0.5 gpm |
| Install burden | Direct-connect under sink | Push-to-lock refrigerator cartridge |
| TDS reduction | No | No |
| Price | $134.93 | $56 |
| Rating | 8.1/10 | 8.2/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
CuZn UC-200 Under Counter Water Filter
Pros
- Very long advertised service life makes annualized cost unusually low
- Connects to the cold-water line without a separate dispenser faucet
- NSF/ANSI 42 and 372 certification language fits taste/odor and materials-focused buyers
Cons
- Health-effect reduction claims need performance-sheet verification beyond the 42/372 baseline
- Large cartridge can be awkward in tight cabinets
- Long life depends on water quality and actual household usage
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
CuZn UC-200 Under Counter Water Filter
The CuZn UC-200 is the low-maintenance under-sink pick for buyers who mainly want better taste and fewer cartridge changes. Filter Report treats 42/372 as the strong receipt and keeps broader PFAS/lead wording in the caution lane until exact claim receipts are attached.
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.