Waterdrop’s A1 countertop reverse osmosis dispenser is shown as a self-contained way to turn tap water into temperature-controlled drinking water without plumbing. The front OLED screen gives direct control over temperature and dispense volume, with color-coded feedback (blue for cold, red/orange for hot) and a quick stop so you can dose for a cup, bottle, or thermos without guesswork. https://www.waterdropfilter.com/products/ro-hot-cold-water-dispenser-a1
Technically, the A1 is built around a multi-stage RO architecture: a pre-filter stage feeding a 0.0001 µm reverse osmosis membrane, plus UV sterilization intended to keep the internal tanks cleaner over time. Waterdrop’s published claims center on lowering TDS and reducing a wide spread of contaminants that matter in real tap water—PFAS (PFOA/PFOS), chlorine taste/odor, and heavy-metal ions among them—while listing a 2:1 pure-to-drain ratio and a 100 GPD production class output.
Where the product differentiates from a typical countertop purifier is the thermal layer on top of RO. You get six temperature presets spanning roughly 5°C to 95°C (41°F to 203°F), several fixed dispense volumes that auto-stop, and a child-lock that must be held to unlock hot water to reduce burn risk. The UI also references modes like night mode, off-home mode, and altitude mode, and the demo shows hot output arriving in seconds rather than a kettle-style wait at CES Las Vegas 2026.
Because it’s tank-based, portability is the key tradeoff: you refill a feed reservoir and periodically empty a separate wastewater compartment (a normal consequence of RO concentrate). Maintenance is designed around quick cartridge swaps—twist out and replace—with typical guidance of about 6 months for the composite filter and up to 12 months for the RO cartridge, depending on local water quality and how much you use it today.
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