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.


Get the Best Water Filter for Your Sink

An Elevated, Wi-Fi-Enabled Smart RO


Peace-of-Mind Monitoring

It’s easy to stay on top of filter changes and service needs with notifications from your phone. Plus, worry less knowing your local Culligan team can monitor your system's performance remotely.


Wellness-Focused Features

Set water consumption goals and record your progress, with notifications to help you make sure you’re getting the hydration you need.


Worry-Free Water Quality

Our smart water filter tracks the contaminants reduced in your water, so you can feel confident you’re getting water you can trust.³


Save Money (and the Planet)

See money and plastic-waste savings from eliminating single-use bottles by using a water filter for your sink instead.

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.





















Customized Filtration to Fit Your Needs

All Culligan RO systems include drinking water filters that provide multiple stages of filtration. The core levels of filtration are the sediment/carbon pre-filter, the RO membrane and a post-filter, which provides comprehensive protection against a broad array of issues including total dissolved solids (TDS), heavy metals, chlorine, lead and more. You also have a choice of one- or two-year filters. Additionally, you can enhance your system with these options:

Total Defense Cartridge

Add an extra layer of filtration for pharmaceuticals, mercury, VOCs (volatile organic compounds), pesticides and more; you can also choose a Total Defense Cartridge with Mineral Boost.

Advanced Post-Filter

Expand protection to address bacteria and viruses; this filter is a particularly good option for well water.

Arsenic Filter

Focus on reducing arsenic in your water in areas where this issue is more significant.

Mineral Boost Cartridge

Add natural calcium minerals back into your 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. Learn more about product certifications here.


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 soft water your family deserves. With options to buy, finance or rent, your local Culligan water expert will make recommendations based on your home, water usage, test results and any other concerns.

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.


Culligan products are reliable and long-lasting, with industry-leading warranties.

  • Molded system manifold: Lifetime warranty
  • RO tank and all other parts of the RO system: 10-year warranty
  • Faucet with display, rechargeable battery pack, PCBs and associated LEDs and displays: Five-year warranty​
  • Filters and membranes: One-year warranty

To access customer support, call your local Culligan water expert or​ fill out this Maintenance & Support form​.

Product Specifications

Aquasential® Smart Water Filter

Length x Width x Height

19.0 in x 5.7 in x 17.8 in

Power Specifications

12 VDC, 20W

Rated System Operating Pressure

40 – 120 psi (276-827 kPa)

Inlet Water Temperature

33° – 100° F

Daily Production Rate4

75 gpd4

Recovery Rate


Storage Tank Capacity

3 Gallons

Filter Position

Filter Cartridge



Sediment / Carbon Combination Pre-filter

1 or 2 years


RO Membrane

75 gpd5


Specialty Total Defense6 Specialty Total Defense with Mineral6 Specialty Remineralization Specialty Arsenic6

1 year or 1,000 gallons / 2 years or 2,000 gallons


Post-filter, 1 year Advanced Post-filter (P231)6

1 year or 1,000 gallon / 2 years or 2,000 gallons

Our unmatched, white-glove service doesn’t stop at your free water test and consultation. Your local Culligan water experts will be there to help for the entire life of your water softener with installation and maintenance, assisting with needs such as salt refills, system sanitation and more. They can even monitor your system proactively for issues, offering you further peace of mind.


Convenient Service Plans

Sign up for our regular salt delivery and maintenance plans so you never have to worry about your system’s performance.


85+ Years of Experience

With over 85 years of water treatment experience, you can count on us to provide the solutions and service you need anytime.


Unwavering Local Support

Our team of experts knows your local water and is there to offer support and services right in your neighborhood.


Flexible Installation Areas

Your system can be installed anywhere you have access to main water piping, a drain and an electrical outlet — in the laundry room, basement, garage, or outside.

What recurring maintenance is involved?​

Our smart reverse osmosis system is certified to reduce over 70 contaminants, including viruses, bacteria, mercury, arsenic and lead, as well as emerging contaminants. Here is the full list of contaminants:

Installation costs will depend on where the system is being installed and other factors. To get more details about costs, please contact your local Culligan water experts for more information.

How can I purchase replacement filters or parts for my under-sink water filter?​

You can download the product manual here:

Download Manual

Service is always friendly and efficient.

The process was easy, and now I have the best drinking water available. I have always been satisfied with my Culligan service.

— Brigitta M, WI

The Culligan reverse osmosis system is great.

The technician was professional, courteous, completely knowledgeable and went out of his way to do a fantastic job.

— Dale K, MN

Very reliable and trusted brand, local office and salesperson.

Really like the smart app that allows me to monitor from my phone.

— Kevin T, ON

Let’s Get Started

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

Contaminants Reduced

  • Aesthetic Chloramine
  • Aesthetic Chlorine
  • Alachlor
  • Atrazine
  • Bacteria
  • Barium
  • Benzene
  • Bromochloroacetonitrile
  • Bromodichloromethane
  • Bromoform
  • Cadmium
  • Carbofuran
  • Carbon Tetrachloride
  • Chlorobenzene
  • Chlorodibromomethane
  • Chloropicrin
  • Copper
  • Cyst
  • 2,4-D
  • Dibromoacetonitrile
  • Dibromochloropropane
  • Dichloroacetonitrile
  • 1,1-Dichloro-2-propane
  • O-Dichlorobenzene
  • P-Dichlorobenzene
  • 1, 2-Dichloroethane
  • 1, 1-Dichloroethylene
  • Cis-1,2-dichloroethylene
  • Trans-1,2-dichloroethylene
  • 1,2-dichloropropane
  • Dinoseb
  • Endrin
  • Ethylene dibromide
  • Fluoride
  • Heptachlor (H-34, heptox)
  • Heptachlor epoxide
  • Heptachlorobutadiene
  • Hexachlorocyclopentadiene
  • Hexavalent Chromium
  • Lead
  • Lindane
  • Mercury
  • Methoxychlor
  • Methyltert-butylether (MTBE)
  • Particulate Class I
  • Pentachlorophenol
  • Pentavalent Arsenic @50 ppb
  • PFOA
  • PFOS
  • Radium 226
  • Radium 228
  • Selenium
  • Simazine
  • Styrene
  • TDS
  • 2,4,5-TP (Silvex)
  • Tetrachloroethylene
  • Tribromoacetic acid
  • Trichloroacetonitrile
  • Toluene
  • Toxaphene
  • 1,2,4-Trichlorobenzene
  • 1,1,1-Trichloroethane
  • 1,1,2-Trichloroethane
  • Trichloroethylene
  • 1,1,1-Trichloro-2-propane
  • Trivalent Arsenic @50 ppb
  • Trivalent Chromium
  • TTHM (chloroform)
  • Turbidity
  • Virus
  • Xylenes
  • Emerging Contaminants:
  • Atenolol (Group 1/B)
  • Bisphenol A (Group 3/A)
  • Carbamazepine (Group 1/B)
  • DEET (Group 1/C)
  • Estrone (Group 3/A)
  • Ibuprofen (Group 3/A)
  • Linuron (Group 1/B)
  • Metolachlor (Group 1/C)
  • Naproxen (Group 3/A)
  • Nonylphenol (Group 3/A)
  • Phenytoin (Dilantin) (Group 3/B)
  • TCEP (Group 2/C)
  • TCPP (Group 2/C)
  • Trimethoprim (Group 1/B)