iSpring RCC1UP-AK
Score: 88/100
Express Water RO5DX
Score: 88/100Rankings
The iSpring RCC1UP-AK is a 7-stage under-sink reverse osmosis system designed for residential drinking water purification, featuring a booster pump, UV sterilization, and alkaline remineralization. It removes up to 99% of over 1,000 contaminants while restoring beneficial minerals and maintaining a highly efficient 1.5:1 pure-to-waste water ratio. Best suited for homeowners with variable water pressure who need a booster pump for consistent performance.
The Express Water RO5DX is a compact 5-stage under-sink reverse osmosis system featuring NSF/ANSI 58 certification and alkaline remineralization for improved taste. It offers a 50 GPD production rate and includes a leak detection shutoff for added safety. While it lacks the high capacity of larger systems, its pre-assembled design and remineralization feature make it a strong contender for standard households.
| Attribute | | |
|---|---|---|
7 stagesbest | 5 stages | |
100 gallons per daybest | 50 gallons per day | |
99 percentbest | 96 percent | |
— | 4 gallonsbest | |
1,000 countbest | 1,000 countbest | |
— | 12 monthsbest | |
| ↓ lower better | 5.3 inches | 5 inchesbest |
| ↓ lower better | 19 inches | 15 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI | NSF/ANSI 58 |
Storage(1) | ||
Storage Tank Capacity (gallons) | Not specified gallons | 4 gallons |
Maintenance(1) | ||
Filter Lifespan (months) | Not specified months | 12 months |
Design(2) | ||
System Width (inches) | 5.3 inches | 5.0 inches |
System Height (inches) | 19.0 inches | 15.0 inches |
Power(1) | ||
Power Requirement | true | false |
Performance(5) | ||
Filtration Stages (stages) | 7 stages | 5 stages |
Daily Production Rate (gallons per day) | 100 gallons per day | 50 gallons per day |
TDS Reduction Rate (percent) | 99 percent | 96 percent |
Wastewater Ratio | 1.5:1 | Standard |
Feed Water Pressure (PSI) | 30-70 PSI | 40 PSI |
Features(1) | ||
Faucet Type | Brushed Nickel | Chrome |
Products in the top-left offer the best value (high score, low price).
The provided search results do not include detailed professional reviews, editor commentary, or substantial expert critiques. The product is described as an upgrade to the standard RCC7AK-UV system, suggesting it represents an improvement in the product line, but specific professional praise or criticism is not available in the sources.
The search results provided do not include detailed user reviews, testimonials, or consumer feedback sections. Consequently, there is no data regarding common praise, recurring complaints, or general sentiment from everyday users for this specific model.
Professional reviewers highlight the RO5DX's NSF/ANSI 58 certification as a key strength, validating its TDS reduction capabilities and material safety.
Users generally praise the system for its reliable performance, compact size, and the peace of mind provided by NSF certification.
