
APEC Essence ROES-PH75
Score: 82/100
iSpring RO800G
Score: 75/100Rankings

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.

The iSpring RO800G is a tankless reverse osmosis under-sink water filtration system designed to deliver up to 800 gallons per day with a flow rate of 0.6 gallons per minute. It features a space-saving design that eliminates the need for a storage tank and offers a high water efficiency ratio of 2.5:1 pure to drain. The system is ideal for high-demand users needing rapid RO water such as large families, offices, or restaurants.
| Attribute | ![]() | ![]() |
|---|---|---|
6 stagesbest | 2 stages | |
75 gallons per day | 800 gallons per daybest | |
99 percentbest | — | |
4 gallonsbest | 0 gallons | |
— | 10 countbest | |
| ↓ lower better | 5.25 inchesbest | 6.5 inches |
| ↓ lower better | 17.5 inchesbest | 17.75 inches |
40 PSIbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | WQA Certified | |
Storage(1) | ||
Storage Tank Capacity (gallons) | 4 gallons | 0 gallons |
General(1) | ||
Installation Type | Under Sink | Under-sink |
Design(2) | ||
System Width (inches) | 5.25 inches | 6.50 inches |
System Height (inches) | 17.5 inches | 17.75 inches |
Power(1) | ||
Power Requirement | false | true |
Performance(6) | ||
Filtration Stages (stages) | 6 stages | 2 stages |
Daily Production Rate (gallons per day) | 75 gallons per day | 800 gallons per day |
TDS Reduction Rate (percent) | 99 percent | percent |
Wastewater Ratio | Low | 2.5:1 |
Contaminants Removed (count) | null count | 10+ count |
Feed Water Pressure (PSI) | 40 PSI | PSI |
Features(3) | ||
Remineralization | true | |
Faucet Type | Brushed Nickel | Dedicated Faucet |
Automatic Shutoff | true | |

Products in the top-left offer the best value (high score, low price).

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.




Search results lack in-depth expert reviews from major testing sites like Wirecutter or Consumer Reports. However, retailer descriptions and YouTube installation guides highlight the system as a top-of-the-line solution, emphasizing its fast flow, high efficiency, and next-generation features.
Limited consumer feedback is available, with one Wayfair review rating the product 3 out of 5 stars, indicating middling satisfaction without specific details.