iSpring CU-A4
Score: 72/100
Frizzlife SP99
Score: 82/100Rankings
The Frizzlife SP99-NEW is an under-sink filtration system that includes a brushed nickel faucet and offers NSF-certified removal of over 99% of contaminants like lead and chlorine. It retains beneficial minerals and features a quick-change filter design. The main drawbacks are the lack of detailed expert/user feedback and missing data on filter lifespan. It is best for homeowners seeking a DIY-friendly system with a dedicated faucet.
The iSpring CU-A4 is a compact, tankless 4-stage ultrafiltration system that removes up to 99% of 700 contaminants while retaining beneficial minerals and producing zero wastewater. It lacks independent third-party testing data and does not reduce TDS, which are limitations for users seeking comprehensive purification. It is best suited for apartment dwellers and RV owners with limited under-sink space who prioritize mineral retention.
| Attribute | | |
|---|---|---|
0.5 gallons per minute | 1.5 gallons per minutebest | |
6 monthsbest | — | |
4best | 3 | |
1 yearsbest | — | |
| ↓ lower better | 12.5 inchesbest | 14 inches |
| ↓ lower better | 4.5 inchesbest | 5 inches |
| ↓ lower better | 10.5 inchesbest | 15 inches |
0 percentbest | 0 percentbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Value & Warranty(1) | ||
Warranty (years) | 1 years | years |
Dimensions & Fit(3) | ||
Height (inches) | 12.5 inches | 14.0 inches |
Width (inches) | 4.5 inches | 5.0 inches |
Depth (inches) | 10.5 inches | 15.0 inches |
Performance & Filtration(6) | ||
Certifications | NSF/ANSI | NSF/ANSI 42&53 |
Contaminants Removed | Lead, Chlorine, PFAS, Arsenic, Heavy Metals, Chloramine, Hydrogen Sulfide, Rust, Sand, Dirt | Lead, Chlorine, Chloramine, Fluoride, Heavy Metals |
Flow Rate (gallons per minute) | 0.5 gallons per minute | 1.5 gallons per minute |
Filter Life (months) | 6 months | months |
Filtration Stages | 4 | 3 |
Filtration Technology | Ultrafiltration | Carbon Block |
Features & Accessories(1) | ||
Remineralization | false | true |
Installation & Compatibility(3) | ||
Installation Type | Under-sink | Under Sink |
Operating Pressure (psi) | 40 psi | 20-80 psi |
Installation Time (hours) | 1 hours | 0.25 hours |
Products in the top-left offer the best value (high score, low price).
The search results consist primarily of manufacturer product pages and retailer listings, with no independent professional reviews or third-party testing data included. Consequently, there is no expert editorial assessment available to validate the system's actual performance relative to the manufacturer's claims regarding contaminant removal and durability.
The provided data does not contain user reviews, customer testimonials, or recurring feedback patterns from everyday consumers. While Home Depot lists 81 customer questions and answers, the specific content of this user feedback is not included in the research data.
No professional reviewer opinions or editorial summaries were found in the provided data.
No consumer sentiment data, user testimonials, or recurring themes from everyday users were available in the search results.
