High Efficiency Water Softener

Put hard water problems behind you with the world’s most efficient water softening system1 that transforms every drop, every day into the cleaner soft water your home needs. Plus, hassle-free salt delivery and maintenance ensure your system is always operating at peak performance.

Ready for a 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.


Top-Of-The-Line to the Smallest Detail

Adjustable Softness

Customize the softness of your water to feel exactly how you like it best with the Dial-a-Softness® control.

State-of-the-Art Monitoring

Feel confident your system is working with advanced system diagnostics and daily water usage monitoring from our proprietary Soft-Minder® meter.

Flexible Fit

Enjoy the freedom of installing your system in the laundry room, basement, garage or outside, with a variety of options to choose from.

Long-Lasting Design

Get peace of mind knowing that Culligan systems resist UV rays, rust and corrosion to provide you with years of soft water.

HE Water Softening System Options

There are four high efficiency (HE) water softener sizes available, and all of them can be installed inside or outside. Your local Culligan water expert will provide recommendations on the best option for you based on your water flow, usage, hardness and pipe size. They may also recommend additional product options to address any other water issues or needs you may have.

Proportional Brining

Increase efficiency and reduce salt usage by allowing your softener to only regenerate the part of the resin bed that has been exhausted.


This patented technology adjusts to changes in water hardness so it only regenerates as needed, enabling more efficient operation.


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 Aquasential Smart High Efficiency 9″, 9″ Outdoor, 9″ Upflow, 9″ Upflow Outdoor, 10″, 10″ Outdoor, 10″ Upflow, 10″ Upflow Outdoor, 12″, 12″ Outdoor, 14″, and 14″ Outdoor have been tested and certified by WQA against NSF/ANSI Standard 372, CSA B483.1, and NSF/ANSI Standard 44 for the effective reduction of hardness (calcium and magnesium), barium, and radium 226/228 as verified and substantiated by test data.​
Learn more about product certifications here.

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


World’s Most Efficient Water Softener

With patented technology, this eco-friendly water softener helps you save on salt, water and electricity usage, reducing operating costs by up to 46%.³


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.

  • Quadra-Hull® conditioner tank and Cullex® resin: Lifetime
  • Aquasential Smart High Efficiency circuit board, control valve body (excluding internal parts), salt storage container, brine valve and all its component parts: 10 years
  • Soft-Minder meter, Smart Brine probe, Salt Level Monitor and Aqua-Sensor probe: Five years
  • Entire conditioner: One year

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





A – Total Height





B – Resin Tank Height





C – Resin Tank Width





D – Brine Tank Width/ Weight

16” 250 LB or 18” with 375 LB Brine Tank

18” with 375 LB Brine Tank

18” with 375 LB Brine Tank

24” with 600 LB Brine Tank

E – Brine Tank Height





Product Details

Total Hardness Maximum

Resin Volume in Cubic Feet

Rated Service Flow in Gallons per Minute

Efficiency at Rated Dosage⁴

9” Downflow

Cullex® Media, 1.0 ft³

9.0 gpm @ 12 psi

4,463 gr/lb @ 4 lb salt dosage

10” Downflow

99 gpg

Cullex® Media, 1.5 ft³

9.4 gpm @ 12 psi

4,463 gr/lb @ 6 lb salt dosage

12” Downflow

99 gpg

Cullex® Media, 2.0 ft³

10.0 gpm @ 11 psi

4,479 gr/lb @ 7 lb salt dosage

14” Downflow

99 gpg

Cullex® Media, 3.0 ft³

10.0 gpm @ 11 psi

4,052 gr/lb @ 10.5 lb salt dosage

9” Upflow

30 gpg

Cullex® Media, 1.0 ft³

9.0 gpm @ 11 psi

4,896 gr/lb @ 2 lb salt dosage

10” Upflow

30 gpg

Cullex® Media, 1.5 ft³

9.4 gpm @ 12 psi

,105 gr/lb @ 3 lb salt dosage

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 high efficiency 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.

Play Video

Water Softener Installation: What to Expect

Learn everything you need to know about getting started with your smart water softener.

Can I use this Culligan water softening system with well water?​
Yes. Hard water is one of the most common problems for well owners. The High Efficiency Water Softener can provide all the benefits of water softening for those who get their water from a private well as well as those with municipal water.
This water softening system was designed to primarily address hard water. If you want a system that both softens your hard water and filters specific contaminants, the Aquasential® Smart High-Efficiency Municipal Water Softener (which also addresses chlorine) or the Aquasential® Smart High Efficiency Softener-Cleer (which targets iron as well) may be right for your home. Looking for a drinking water solution instead? Check out Culligan’s reverse osmosis water filtration systems.
Experts often recommend that home water softener users should check their brine tank at least once a month. If the tank appears to be less than half-full, it may be a good idea to add some more salt, but be careful to not overfill the tank. Keep in mind that older softeners may regenerate more frequently, while newer models sometimes include brine tank monitors and regenerate more efficiently based on demand. When you sign up for regular salt deliveries with your Culligan service team, you can forgo the hassle and heavy lifting of buying and carrying new bags of salt.
Yes, the High Efficiency Water Softener can generally work with any plumbing and water-using appliances. When using soft water, you can expect to improve their efficiency, durability and lifespan while also saving on repairs and replacement.
As the world’s most efficient water softener, the HE Water Softener uses less salt, water and electricity than other traditional softeners. The HE softener also enables you to use less of detergents and other cleaning supplies, and as such, helps reduce your carbon footprint by minimizing the amount of cleaning products that end up in the environment.
What is the difference between a traditional and high efficiency water softener from Culligan?​
High efficiency water softeners from Culligan are equipped with advanced technology such as our proprietary Aqua-Sensor to offer a unique advantage to optimize resources — like salt, water and electricity — to save you money and protect the planet.
Culligan’s trained technicians provide full-service installation to make it simple to get started with your new system. Your local Culligan water expert will connect your high efficiency water softener to your water supply, electrical, drain and the salt-filled brine tank, and you’ll be all set. The average installation takes about 2-4 hours.
Water softeners come in various sizes, and making sure that you have the right kind for your needs is important. Getting the right size will allow you to make sure that you can soften your water sufficiently without losing efficiency and wasting extra water and salt by regenerating too often. The best way to accurately size your water softener is to work directly with a Culligan water expert to test your water, assess your flow rate and determine how much water your household uses on a regular basis. Generally speaking, harder water, higher water consumption and a greater number of taps running simultaneously mean that you’ll need a larger water softener. You don’t want to overshoot, though. Regular regeneration is also still required for optimal performance. Plus, larger units tend to cost more, meaning that purchasing an oversized softener might result in spending more money upfront than is necessary.
Yes, you can easily save your treated water by putting your system in bypass for any uses that don’t benefit from soft water, such as watering the lawn.

We can feel the difference in the softness of the water...

The High Efficiency Model uses less salt and does not run as often as our old system.
— Audrey C, MN

The softener is working great and we’re totally enjoying our soft water system!

Thanks Culligan! Great job all around, from start to finish.
— Mark and Sandy K, WI

I really believe the Culligan High-Efficiency water softener is the best

on the market and will last a lifetime. I highly recommend Culligan in Peterborough to anyone. Thank you, Culligan.
— Hans L, ON

Let’s Get Started

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