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GLACIER FRESH GFU03 Reverse Osmosis System 800 GPD, No Electric/Noise, 3:1 Pure to Drain, 5-Stage Tankless Under-Sink Water Filter System, Filtration Accuracy 0.0001μm, for Any Under-Sink Setting

GLACIER FRESH GFU03 Reverse Osmosis System 800 GPD, No Electric/Noise, 3:1 Pure to Drain, 5-Stage Tankless Under-Sink Water Filter System, Filtration Accuracy 0.0001μm, for Any Under-Sink Setting

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Regular price $351.98
Regular price Sale price $351.98
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  • Risk-Free 30-Day Returns
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30-Day Hassle-Free Returns

Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.

✔ Easy return process

✔ Fast refunds

✔ No hidden conditions

Fast U.S. Shipping

We ship within the United States only — no international delays.

✔ Processing time: 1–2 business days

✔ Delivery time: 3–7 business days

✔ Real-time tracking available

👉 Track your order anytime from the header via Track Order

About This

  • Tankless/Electricity-Free Design: GLACIER FRESH GFU03 tankless reverse osmosis system features an integrated tankless design, saving up to 70% of under-sink space. Unlike other electric systems, it is water-powered, requiring no electricity and thus avoiding electrical safety hazards and operating noise. Suitable for any under-sink installation environment.
  • 5-Stage Filtration: Under sink reverse osmosis system meets NSF/ANSI 58 and 372 standards, employing a precise seven-stage filtration system to effectively remove over 1000+ harmful contaminants, including PFOA, PFOS, chlorine, lead, fluoride, and heavy metals. Ensuring every drop of water is pure, safe, and odorless, providing a clean drinking experience.
  • 0.0001 μm RO Membrane: The GLACIER FRESH Reverse Osmosis Water Filter features a high-precision 0.0001μm RO membrane, effectively filtering impurities larger than 0.0001μm to ensure unparalleled water purity. This advanced technology not only guarantees clean drinking water but also delivers a refreshing and sweet taste.
  • 800 GPD High Flow: The Reverse Osmosis Water Filter boasts a high flow rate of 800 GPD, filtering a cup of water in just 5 seconds, perfectly meeting the pure water needs of a large family. An external water pressure gauge monitors water pressure in real time, protecting the system for normal operation.
  • 3:1 Pure to Drain Ratio: The Tankless Reverse Osmosis System boasts an impressive 3:1 wastewater ratio, producing only one cup of wastewater for every three cups of purified water filtered. This not only saves you money but also reduces water waste and promotes sustainable development.
  • 30 Minute Quick Installation: Undersink Water Filter Systems can be installed in just 30 minutes, half the time required for traditional tank-type systems (2-4 hours). All necessary adapters and tool-free connectors are included. Note: This product requires drilling a 1/2"-1" diameter hole in the sink to prepare for faucet installation.
  • Easy-Replace Filter: The filter cartridge features a pull-out design, allowing for replacement in just 3 seconds. To replace the cartridge, simply turn off the tap; there's no need to shut off the water valve. Note: After initial installation and each cartridge replacement, rinse the filter cartridge with running water for 10-20 minutes.
  • Please measure your cabinet dimensions to ensure that the cabinet size is larger than the product size. The product size is 13.58” x 8.27” x 16.54” (345x210x420mm)

Overview

  • Brand : GLACIER FRESH
  • Special Feature : 5-stage Filtration, No Drilling, No Electric Drive, Tankless, Water Saver Technology
  • Product Dimensions : 13.58"L x 8.27"W x 16.54"H
  • Material : 1. System Cover: Plastic, 2. Faucet: Stainless steel, 3. RO Filter: Reverse Osmosis Membrane Filter, 4. C Filter: Granular Carbon Filter, 5. PPC Filter: Composite Carbon Filter 1. System Cover: Plastic, 2. Faucet: Stainless steel, 3. RO Filter: Reverse Osmosis Membrane Filter, 4. C Filter: Granular Carbon Filter, 5. PPC Filter: Composite Carbon Filter
  • Capacity : 800 gallons
  • Included Components : RO System, RO/C/PPC Filter, Faucet, PE pipes, Feed Water Adapter
  • Package Information : Tankless Ro System
  • Installation Type : Under Sink
  • Purification Method : Carbon Block, Reverse Osmosis
  • Power Source : No Electric Drive
View full details
Is Hard Water or Contaminated WaterDamaging Your Home?
Signs You May Be Experiencing Problems With Your Tap Water
Protect Your Home Appliances
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Softer Skin & Healthier Hair
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Pure, Better-Tasting Drinking Water
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Prevent Costly Hard Water Damage
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Reduce Limescale Buildup
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Clean Water, Whole Home
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Protect Your Home Appliances
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Softer Skin & Healthier Hair
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Pure, Better-Tasting Drinking Water
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Prevent Costly Hard Water Damage
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Reduce Limescale Buildup
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Clean Water, Whole Home
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RO Water Filters Reverse Osmosis Water Filters for Pure Drinking Water
Salt Water Softeners Salt Water Softeners for Powerful Hard Water Treatment
Pure Water. Better Living.

Experience the difference clean, softened water makes in your daily life — from healthier skin to better tasting drinking water.

👉 Softer skin and smoother hair with every shower.

Descaling Solutions Descaling Solutions for Removing Limescale and Mineral Buildup
👉 Enjoy healthier skin and hair with every use.
Water Filter Cleaning Kits

👉 Prevent scale buildup and keep your appliances running efficiently.

Under Sink Water Filters

👉 Softer, brighter clothes that last longer with every wash.

Reverse Osmosis Systems Best Reverse Osmosis Systems for Clean Drinking Water

See the Difference in Your Water — Instantly

Hard water, chlorine, and hidden contaminants can affect your health, skin, and appliances.

Our advanced filtration system removes impurities and delivers clean, safe water throughout your entire home.

Feel the difference in every drop — from your kitchen to your shower.

Impurity Reduction 95%
Chlorine Removal 99%

FAQ

Is installation difficult?
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No. Our systems are designed for easy DIY installation and most homeowners can install them without professional tools. If you need help, our support team is always available.
Do I need a plumber to install the system?
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No plumber is required. The system connects directly to your existing plumbing with simple fittings.
How does this system improve water quality?
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Our filtration system helps reduce common impurities and minerals that cause hard water problems, improving the taste and clarity of your water.
Will this help protect my appliances?
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Yes. Hard water minerals can build up inside appliances. Our system helps reduce scale buildup, helping extend the life of washing machines, dishwashers, and water heaters.
How often do filters need to be replaced?
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Most filters only need replacement every 6–12 months, depending on usage and local water conditions.
Will this improve my skin and hair?
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Many customers notice softer skin and smoother hair after switching to filtered or softened water.
What if I'm not satisfied with the system?
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If you're not completely satisfied, you can return your product within 30 days for a full refund.
Easy to install — no plumber required. Our experts are here if you need help.
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