PureOne
1200GPD Smart RO
High-flow purified water for cooking, bottles and family meals without a queue at the faucet.
1200 GPDSmart AppAll-in-one filter
Start with the way your kitchen uses water.
Each system solves a different everyday need, from faster filling to instant hot water, mineral-balanced taste and a smaller footprint.
PureOne Hot
800GPD Hot RO
Make tea, coffee or formula with purified hot water on demand without boiling a kettle.
800 GPD6 temperaturesSmart App
PureEssence
1000GPD Alkaline RO
RO filtration followed by remineralization for crisp water with selected minerals added back.
1000 GPDpH 7.5+Smart App
PureEssence ECO
600GPD Compact RO
Fresh tankless RO water in a slimmer body that leaves more usable storage under the sink.
600 GPD5.2 in wideSpace-saving
Four systems. Four clear reasons to choose.
| Choose by | PureOne 1200 | PureOne Hot | PureEssence Alkaline | PureEssence ECO |
|---|---|---|---|---|
| Best for | High daily water demand | Tea, coffee and formula | Mineral-balanced drinking water | Limited cabinet space |
| Rated capacity | 1200 GPD | 800 GPD | 1000 GPD | 600 GPD |
| Key difference | Fast flow + all-in-one filter | Purified hot water on demand | Remineralization after RO | 5.2-inch slim profile |
| Smart control | App monitoring | App monitoring | App monitoring | Simple everyday operation |
| Real-life payoff | Fill faster during busy meal prep | Skip the kettle | Enjoy a crisper mineral taste | Keep more under-sink storage |
Specifications and features vary by model. Refer to the individual product page for full details.
Why tankless RO
Engineered around the moments you actually notice.
Better performance matters most when it turns into faster filling, fresher water and simpler ownership.
Fresh on demand
No storage tank means purified water is produced as you use it instead of waiting in a reservoir.
More usable space
Compact under-sink designs leave more room for organizers, bins and daily kitchen storage.
Flow that keeps up
Choose from 600 to 1200 GPD according to household size, cooking habits and peak water demand.
Simpler filter care
Model-matched replacement filters make ongoing maintenance easier to understand and plan.
*Selected model specifications. See individual product pages for model-specific performance and certification details.
The right replacement filter, without the guesswork.
Match the filter to your system and keep filtration performance on schedule.
Common questions about under-sink RO systems.
Clear answers to help narrow the choice before installation.
Visit product supportWhich system is best for a larger family?
Start with flow rate. PureOne 1200 is designed for higher daily demand and faster filling during cooking, meal prep and busy family routines.
Do I need the instant hot model?
PureOne Hot is the better fit when tea, coffee, formula or hot-water food prep is part of the daily routine. It combines RO filtration with multiple hot-water temperature settings.
What does remineralization change?
RO removes dissolved substances from water. The PureEssence Alkaline system adds selected minerals back after filtration to create a crisper, mineral-balanced taste.
How much cabinet space does a tankless RO system need?
Space requirements vary by model. For narrow cabinets, PureEssence ECO uses a slim 5.2-inch-wide body designed to preserve more usable under-sink storage.
How do I choose the correct replacement filter?
Match the replacement filter name and compatibility information to the exact RO system model. Each product page lists the systems the filter is designed to support.
Still deciding?
Choose the benefit your household will notice every day.
Faster flow, instant hot water, mineral-balanced taste or a compact fit - the right starting point is the routine you want to make easier.