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Water Treatment
High-Efficiency Water Treatment Systems for Your Home
Navien WEC & PeakFlow salt-free water treatment systems filter out harmful substances to deliver better water and protect the plumbing supply and appliances in homes of all sizes.
Both systems use advanced technology to treat hard water and protect your home’s entire water supply system with low power consumption, and minimal ongoing maintenance. WEC and PeakFlow are eco-friendly.
New WUA500 Series
Navien’s WUA500 carbon block filter is a cost-effective way to remove up to 99% of impurities from your water, including:
- Chlorine
- Lead
- Herbicides
- Pesticides
- Emerging contaminants (like pharmaceuticals)
Sleek and compact, WUA fits easily under your kitchen sink and delivers cleaner, better-tasting water from a dedicated smart faucet.
Designed for convenience, it has an easy-turn handle for fast and easy filter changes. A color LED on the smart faucet lets you know when it’s time—a cartridge lasts six months on average.
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WUA500 Series
New WUR500 Series
Navien’s under-sink tankless reverse osmosis (RO) system reduces total dissolved solids (TDS), fluoride, scale, and other impurities while preserving beneficial minerals for pure, great-tasting water.
- 93% TDS rejection rate
- 2:1 pure to drain ratio
- Certified NSF/ANSI 58, 372 & 61 standards
Smart controls display real-time TDS levels and filtration status, while the polished metal smart faucet provides easy access to high-quality drinking water with built-in reminders for filter replacement.
Discover how easy it is to enjoy pure, on-demand drinking water with better taste, less waste, fast flow, smart filters & no storage tank.
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WUR500 Series
New WEC Series
Navien WEC water treatment systems offer homeowners continuous, whole-house water treatment on demand with many benefits:
- Salt-free, economical, and eco-friendly with no harmful wastewater.
- Protects pipes, appliances and plumbing fixtures by reducing scale built-up.
- Great for hair, skin, cooking, and washing clothes.
- Reduces water-spotting on all surfaces, glassware, dishes, and silverware.
- Advanced electro-membrane technology removes contaminants.
- On demand whole-house water treatment without regeneration downtime.
- Built-in automatic self-cleaning Clean-In-Place (CIP) technology for minimal maintenance.
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WEC Series
PeakFlow Series
PeakFlow residential water treatment systems include two whole-house models - Peakflow A, PeakFlow S, that eliminate hard water problems by preventing scale buildup and maintaining optimal water flow:
- Inhibits scale without salt
- Low maintenance
- Easy to install
- Environmentally friendly
- Maintains water-related appliance efficiency
- Media replacement period of 2 or 5 years
- Protects the longevity of your entire water supply system
Learn more about
PeakFlow Series
Advantages of Navien Water Treatment Systems
Continuous Whole-House Water Treatment on Demand
Navien’s WEC and PeakFlow treatment systems prevent scale buildup, reduces hardness, and total dissolved solids (TDS) to enhance appliance efficiency and lifespan, protecting the internal surfaces, residential pipes, and plumbing fixtures.
Our WEC water filtration system reduces harmful contaminants, giving you improved water from every tap in your home.
Effective Hard Water
Solutions Made Easier
Homeowners who use our WEC or PeakFlow systems enjoy all the benefits of whole-house water treatment without the drawbacks that come with water softeners or RO systems:
- NO re-piping to PVC
- NO salt shopping & storage
- NO sodium taste/content in water
- NO brine tank & salt level monitoring
Protect Your Home’s Water Supply and the Environment
Navien’s WEC treats water without salt, so no chloride waste reaches waterways and plastic salt bags stay out of landfills. Its smart deionization turns on only when water is flowing, and the scale-reducing water it delivers helps heaters and appliances stay efficient with less upkeep.
All Navien whole-house and point-of-use water treatment systems are salt-free, chemical-free and highly energy efficient, helping to reduce your home’s carbon footprint.
Find a Navien water treatment system installer near you
Navien's water treatment and filtration systems require an authorized Navien installer to ensure you benefit from our industry-leading limited warranties.
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