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Navien Tankless RO System
WUR500
Navien Tankless RO System
Compact, high-performance drinking water filtration for fresher, cleaner water with smart technology.


Advanced under-sink reverse osmosis with no tank, no waiting, no wasted space.
Navien’s WUR500 Tankless RO System is sleek, powerful, and refreshingly easy to maintain. The WUR500 is the smarter way to enjoy cleaner, healthier, low TDS drinking water straight from your tap without the bulky tank or slow refills of traditional RO systems.
Thoughtful design touches
Smart features, compact size, and intuitive controls make WUR500 easy to install and effortless to use.

Polished metal smart faucet with three modes extends filter life: RO+ PCT, PCT Only, and Off.

Digital control panel features filter replacement alerts, system status indicators, and real-time TDS display.

Slim design fits neatly under standard kitchen sinks (15.9"H x 5.4"W x 17.1"L)


Quick to install - meets contractor needs

Luxurious look with matte
gunmetal finish
How the WUR500 works
Water first flows through the PCT composite filter, a 3-in-1 filter made of PP sediment, carbon filter and post carbon block improving taste and quality.
Water then passes through a high-capacity reverse osmosis membrane that filters down to 0.0001 microns. A built-in high-performance pump eliminates the need for a storage tank.
With no tank, water is filtered continuously: fresh, fast, and always ready.

Smarter filtration, fewer hassles
Navien’s WUR features a high-capacity dual-filtration system designed to be low-maintenance, so you can enjoy cleaner water with less work.
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0.0001 micron RO membrane
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3-in-1 PCT carbon block filter
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Reliable flow: 600 gallons per day (RO: 0.4 GPM, Filtered: 0.8 GPM) for all your daily water needs.
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Longer filter life: average RO membrane 12-24 months, PCT filter 8-12 months - actual filter life varies with water quality & usage
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Tool-free filter replacements: just two easy twist-lock cartridges
Environmentally friendly
Designed with sustainability in mind, WUR500 helps you save water, reduce waste, and use less energy every day.
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Efficient filtration: 2:1 filtered-to-drain ratio minimizes wastewater
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Low energy use: operates at just 95 watts
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Smart flushing: no standby drain; the system only flushes when necessary
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Reduces plastic waste: eliminates the need for single-use bottled water purchases

