
iSpring RCC1UP-AK
Score: 88/100
APEC Essence ROES-PH75
Score: 82/100Rankings

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 APEC Water Systems ROES-PH75 Essence Series is a 6-stage under-sink reverse osmosis system rated at 75 gallons per day, designed to produce alkaline mineral-enhanced water by adding high-purity calcium carbonate. It features a solid metal frame for durability, large-capacity block filters for extended life, and an eco-friendly low waste ratio with automatic shut-off. It is ideal for families wanting 99% contaminant removal plus pH boost for taste and health preferences.
| Attribute | ![]() | ![]() |
|---|---|---|
7 stagesbest | 6 stages | |
100 gallons per daybest | 75 gallons per day | |
99 percentbest | 99 percentbest | |
— | 4 gallonsbest | |
1,000 countbest | — | |
| ↓ lower better | 5.3 inches | 5.25 inchesbest |
| ↓ lower better | 19 inches | 17.5 inchesbest |
30 PSI | 40 PSIbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF/ANSI | WQA Certified |
Storage(1) | ||
Storage Tank Capacity (gallons) | Not specified gallons | 4 gallons |
General(1) | ||
Installation Type | Under-sink | Under Sink |
Design(2) | ||
System Width (inches) | 5.3 inches | 5.25 inches |
System Height (inches) | 19.0 inches | 17.5 inches |
Power(1) | ||
Power Requirement | true | false |
Performance(5) | ||
Filtration Stages (stages) | 7 stages | 6 stages |
Daily Production Rate (gallons per day) | 100 gallons per day | 75 gallons per day |
Wastewater Ratio | 1.5:1 | Low |
Contaminants Removed (count) | 1000 count | null count |
Feed Water Pressure (PSI) | 30-70 PSI | 40 PSI |

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.




Search results lack in-depth expert reviews from major testing sites like Wirecutter or Consumer Reports. Product pages emphasize manufacturer guarantees of premium components and 2x contaminant removing capacity. A YouTube installer/review video highlights successful installation and TDS reduction testing, positioning the system as worthwhile for clean water.
Limited direct quotes are available, but Home Depot and Lowe's pages note high engagement with 246 questions and answers. Common inferred praise includes effective TDS reduction and easy DIY installation. Recurring complaints are not detailed, though potential issues from similar RO systems include initial setup plumbing challenges.