iSpring RO800G 2-Stage Tankless Reverse Osmosis System, 800 GPD
Two-stage tankless reverse osmosis system rated at 800 GPD with a 2.5:1 pure-to-drain ratio, automatic pre-flush and per-filter life indicators.
$528
Usability
The RO800G is the flow champion of iSpring's consumer line: 800 GPD at 0.6 GPM through only two cartridges, with the best pure-to-drain ratio in the range at 2.5:1. It costs roughly a hundred dollars less than the 500 GPD RO500 while producing 60 percent more water. The catch is certification: iSpring publishes no NSF/ANSI listing for this model, so unlike the RCC7 line its contaminant numbers are manufacturer specifications rather than certified reductions.
- 800 GPD at 0.6 GPM, the fastest flow in iSpring's consumer tankless range
- 2.5:1 pure-to-drain ratio, the most water-efficient in the line
- Only two cartridges to track, the simplest maintenance schedule in the range
- Membrane lasts 24 to 36 months, longer than most tanked systems
- Automatic pre-flush protects the membrane after idle periods
- Per-stage indicator lights warn before a filter expires rather than after
- Cheaper than the 500 GPD RO500 despite higher output
- No published NSF/ANSI certification listing; reductions are manufacturer specifications
- Requires an under-sink electrical outlet to run the booster pump
- No remineralization stage, so water tastes flat compared with the alkaline models
- MRO800 membrane costs $149.99 to replace, the priciest single cartridge in the consumer line
- Municipal water only; well water needs pre-treatment first
- Warranty is 1 year and requires product registration to activate
The iSpring RO800G is a two-stage tankless reverse osmosis system rated at 800 gallons per day, the highest-output unit in iSpring's consumer tankless range. Water passes through a PP+CTO composite sediment and carbon block filter (FPPC) and then an 800 GPD reverse osmosis membrane (MRO800) rated to 0.0001 micron, fed on demand by an internal booster pump with no storage tank.
Output runs to 0.6 gallons per minute, filling an 8 oz cup in about 6.5 seconds, at a 2.5:1 pure-to-drain ratio. The system plugs in and self-manages: an automatic pre-flush runs the membrane after idle periods, and per-stage indicator lights blink white below 10 percent filter life and turn red when replacement is due. A manual 30-second flush runs by holding the Select button.
Two cartridges is the fewest in the line, which keeps maintenance simple: the composite filter is replaced every 6 to 12 months and the membrane every 24 to 36 months. iSpring publishes no NSF/ANSI certification listing for the RO800G, so its contaminant figures are manufacturer specifications. It requires electricity and is intended for municipal tap water.
Additional information
Specification: iSpring RO800G 2-Stage Tankless Reverse Osmosis System, 800 GPD
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