Kohler Model 22155-NA Aquifer® Reverse Osmosis (RO) Water Filtration System

Product Overview

Experience the peace of mind that comes with truly clean water at home. The Kohler Aquifer® Reverse Osmosis Water Filtration System delivers a superior level of purification right under your sink. Its advanced four-stage RO filtration effectively reduces a broad range of harmful contaminants – including arsenic, fluoride, lead, mercury, chlorine, bacteria, viruses, and more. The result is bottle-quality water that’s crisp, pure, and safe for your entire family, straight from your kitchen tap.

Designed for convenience and style, the Aquifer RO system fits neatly in your under-sink cabinet and pairs with a KOHLER® RO-compatible beverage faucet for a seamless look. The space-efficient design includes a 3.2-gallon storage tank to ensure filtered water is always on demand, and all necessary cartridges come included for a straightforward installation. Whether you’re filling a glass, brewing coffee, or cooking, you’ll taste the difference in every drop.

Key Benefits

• Powerful Contaminant Reduction: Advanced 4-stage filtration removes common water contaminants like arsenic, lead, mercury, chlorine, and even microbial cysts, bacteria, and viruses.

• Reduces “Forever Chemicals”: Specialized filters eliminate over 95% of PFAS (PFOA and PFOS) for added peace of mind.

• High Efficiency & Flow: A high-recovery RO membrane with a 1:1 waste-to-filtered water ratio minimizes wastewater. The system provides up to a 0.5 GPM flow rate for steady, on-demand supply.

• Ample Supply, Compact Design: Produces up to 27.5 gallons per day of purified water. The 3.2-gallon storage tank ensures plenty of ready-to-use water in a space-saving design.

• Easy, No-Mess Maintenance: Quarter-turn twist cartridges make filter replacements quick and tool-free. Automatic shutoff prevents spills during maintenance.

• Reliable & Long-Lasting: Built with durable, high-impact materials and backed by Kohler’s 5-year limited warranty.

Technical Specifications

• Filtration Stages: 4-stage reverse osmosis (sediment pre-filter, carbon block pre-filter, RO membrane, carbon block post-filter).

• Included Cartridges: 4 filters included for initial setup.

• Flow Rate: 0.5 GPM (1.9 L/min) at 60 psi.

• Daily Production: Up to 27.5 gallons per day.

• Storage Tank Capacity: 3.2 gallons (12.1 L).

• Recovery Ratio: 1:1 high-recovery design (1 gallon waste per 1 gallon filtered).

• Installation: Under-sink, cold water supply only. Requires an air-gap RO faucet (sold separately).

• Materials: High-impact plastic construction.

• Certifications: NSF/ANSI 42, 53, 58, 401; CSA B483.1; NSF Protocol P231.

• Filter Replacement: Pre/post filters every ~6 months; RO membrane every ~12 months (depending on water quality and usage).

• Unit Dimensions: Approx. 15.6″ W x 16.25″ H.

• Warranty: 5-year limited warranty.

Why Choose This Product

• Trusted Kohler Quality: Backed by a century of craftsmanship, Kohler ensures durability and reliable performance.

• Healthier Hydration: Removes impurities for better-tasting, safer water – perfect for drinking, cooking, and brewing.

• Sustainable Solution: Reduces reliance on bottled water and offers a filter recycling program to minimize waste.

How It Works

1. Stage 1 – Sediment Prefilter: Captures dirt, sand, and rust.

2. Stage 2 – Carbon Block Filter: Removes chlorine and improves taste while protecting the RO membrane.

3. Stage 3 – Reverse Osmosis Membrane: Filters out dissolved solids, heavy metals, and microbes.

4. Stage 4 – VOC/Post Filter: Polishes the water, removing VOCs, pharmaceuticals, and residual tastes or odors.

Health & Sustainability

This system is an investment in your family’s health and the planet. Enjoy cleaner, safer water free from harmful contaminants while cutting down on single-use plastic bottles. Kohler’s filter recycling program ensures even the cartridges are handled responsibly, helping you live sustainably without sacrificing convenience or quality.