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person collecting water into a glass kettle
Culligan employee installing filtration system
person collecting water into a glass kettle
Culligan employee installing filtration system
person collecting water into a glass kettle
Culligan employee installing filtration system

Aquasential® Smart Reverse Osmosis Drinking Water Filtration System

Meet the world’s most efficient reverse osmosis (RO) water system¹ — certified to reduce 12 times more contaminants than the leading standard pitcher filter.² With features like filter change alerts, water quality tracking and RO water with the touch of a button, enjoy peace of mind about your water quality.

Ready for a drinking water upgrade? Your local Culligan® water experts can help determine the right solution for your municipal or well water. Schedule your free, in-home water test or phone consultation to get started.

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Peace-of-Mind Monitoring

Wellness-Focused Features

Worry-Free Water Quality

Save Money (and the Planet)

Explore These First-Rate Features

Certified for Safety

Rely on filtered drinking water from a system certified to reduce over 70 contaminants.

Instant Water Quality Data

Check your water quality from the Culligan Connect app, your smart faucet display, or your ClearLink PRO™.

Best-in-Class Efficiency

Reduce water usage and water bills with a system that is three to five times more efficient than other leading RO systems.

Fits Your Home

Culligan RO systems can go under your sink, in your basement, garage, crawlspace, or other areas.

Comprehensive Contaminant Reduction

Customize your Culligan water filter for your sink to your needs with up to seven stages of filtration and 14 filter options. Our smart RO system is certified to reduce over 70 contaminants, including viruses, bacteria, mercury, arsenic, PFOA/PFOS, and lead, as well as 15 emerging contaminants.
  • Arsenic

  • Viruses

  • Lead

  • Fluoride

  • Chlorine

  • Bacteria

  • Pesticides

  • PFOA/PFOS

  • Calcium

  • Radium

Customized Filtration to Fit Your Needs

All Culligan RO systems include a sediment/carbon pre-filter, RO membrane, and a post-filter, providing comprehensive protection against a broad array of issues, with a choice of one- or two-year filters. You can also enhance your system with these options:

Total Defense Cartridge

Adds filtration for pharmaceuticals, mercury, VOCs (volatile organic compounds, pesticides, and more; can also pair with the Mineral Boost Cartridge.

Advanced Post-Filter

Expands protection to address bacteria and viruses; ideal for well water.

Arsenic Filter

Reduces arsenic in your water where this issue is significant.

Mineral Boost Cartridge

Adds natural calcium minerals back into the water for great-tasting, optimally alkaline, pH-balanced water.

Premium Faucet

Choose from four modern faucet designs in brushed nickel, chrome, matte black, and bronze, and check real-time insights into water quality and filter life on the electronic display.

ClearLink PRO™

Use your existing faucet to switch between RO and tap water at the touch of a button. The display also shares information on filter life and water quality.

Culligan Connect App

Download the Culligan Connect App to get the most out of your system with alerts and in-depth information on water consumption, contaminants reduced, savings, and more.

External Leak Sensor

All our smart ROs have auto-shut off if a leak is detected. Add the external leak sensor for more protection against leaks in nearby pipes or water-using appliances.

100% Satisfaction Guarantee

If you are dissatisfied with your Culligan product for any reason within 30 days of your purchase, Culligan will remove the product and refund the purchase price.*

Third-Party Certified

The Culligan Aquasential Smart Reverse Osmosis System is tested and certified by WQA to NSF/ANSI 58, NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 401, NSF/ANSI 372, CSA B483.1 and NSF Protocol P231 and conforms to these standards for specific performance claims as verified and substantiated by test data.

Award-Winning Product

In 2022, our smart reverse osmosis water system was highly rated by experts at House Beautiful, winning a Live Better Award recognizing “innovative homewares that make life a breeze.”

Ready to Take the Next Step?

Schedule a free, in-home consultation and water test to get one step closer to the enhanced hydration your family deserves. With options to buy, finance, or rent, your local Culligan water experts will make recommendations based on your home, water usage, test results, and any other concerns.

More Reasons to Choose a Culligan Under-Sink Water Filter

01

Dependable, Long-Lasting Products

Experience the benefits of having a water filter for your sink that’s tested against rigorous standards and built for longevity, with long-lasting warranties.

02

Adaptive Compact Structure

Enjoy a sleek, modern look and space-saving design that has flexibility to fit in multiple different spaces in your home.

03

Significant Waste Savings

Avoid the hassle of single-use plastic bottles while also helping the environment by minimizing waste.

04

Long-Lasting Filters

Innovative design enables extra-long filter life up to two years, for a nearly unlimited supply of worry-free drinking water with little maintenance required.

Why Choose a Culligan Smart RO?

Our Environmental Impact

40 Billion+ Bottles Saved

Culligan water filtration solutions benefit the environment by reducing single-use plastic bottle waste and saving billions of bottles each year.

Earth-Conscious Innovation

We prioritize sustainability in designing and developing new products.

Global Water Leadership

Culligan has joined the CEO Water Mandate and the Water Resilience Coalition to lead the way in positive, global water stewardship.

Specifications


Installation & Maintenance


Questions & Answers


Ratings​ & Reviews


Family learning about clean water benefits

Let’s Get Started

Start enjoying the benefits of trustworthy water in your home with help from your local Culligan water experts.

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With a variety of options to choose from, it’s simple to find the right reverse osmosis filtration system for your home’s drinking water needs.

Frequently Bought Together

Your local Culligan water experts can provide recommendations based on your home’s unique water problems.