




DESENRUIS Reverse Osmosis System, Dual RO Water Filter, 800GPD
Retailer ratings4.7 · 27 ratingsOne of these is on the shelf, waiting its turn in the inspection queue. That price is the most it will list at, never more. Anything we find comes off it. An inspection can also find a unit we will not sell, and then this one never goes on sale.
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Our take
An under-sink dual-membrane reverse osmosis water filtration system with an 800 GPD rated capacity and a tankless design.
- Dual RO membrane filtration
- Tankless under-sink design
- 800 GPD rated capacity, 0.55 gpm flow
- LED faucet with TDS display
- 3:1 pure-to-drain ratio
About this item
This DESENRUIS system uses two reverse osmosis membranes along with carbon block and PP cotton stages to filter tap water for drinking and cooking. It is designed to mount under a sink without a storage tank, relying on a continuous flow design rated at 0.55 gallons per minute and an 800 gallon per day capacity.
The system pairs with a faucet that includes an LED display for real-time TDS readings and a filter-life indicator. A 3:1 pure-to-drain ratio is stated, which is meant to reduce the amount of wastewater produced during filtration compared to older RO designs.
The listing lists a supported maximum feed water TDS of 500 ppm and a filter life cycle of 24 months. Housing components are plastic with a metal faucet, and the system is wired as a corded electric unit for its LED display function.
Key specs
| Brand | DESENRUIS |
|---|---|
| Capacity | 800 gallons per day |
| Maximum Flow Rate | 0.55 gpm |
| Installation Type | Under Sink |
| Purification Method | Reverse Osmosis |
| Supported Water TDS Maximum | 500 PPM |
| Filter Life Cycle | 24 months |
| Material | Plastic cover, metal faucet, RO membrane/carbon block/PP cotton filters |
| Power Source | Corded Electric |
| Dimensions | 5.59"L x 16.06"W x 16.3"H |
| Model | ROS01 |