Skip to content


Finally, a Compact Professional-Grade Water Softener

by Mark Timmons June 02, 2013 60 Comments

US Water Systems introduced new line of high-performance, high-efficiency water softeners called the FLEX series this month. After many months of research and development and testing the FLEX water softener has been released to the public. The first thing you will notice is it's size - available in three models, they all have a very small footprint of 13 inches wide by 18 inches deep. That means that these compact water softeners will fit in places most others won't. The FLEX-20 is 26 inches high and easily fits in closets, under sinks, RV's, apartments, condo and strange places where no other water softener will fit. The FLEX-24 is 36 inches high while the FLEX-34 is 43 inches high. The FLEX-34 is capable of softening water for homes with up to 8 people in the family.

While the FLEX might be small, it is big on performance, capable of delivering over 5,000 grains of softening capacity on just 1 pound of salt. Additionally, this is the "Greenest" water softener on the market in that it can regenerate on as little as 1.5 pounds of salt and 9.6 gallons of water. Compare that to some softeners that use up to 15 pounds of salt and 100 gallons of water. The FLEX Water Softener has a fully computerized metering system that regenerates only when needed and operates on 12 volts using about $1.69 of electricity per year. Imagine that level of efficiency and no danger of electrical shock!

It's a fact that most water softeners are sold at Sears, Home Depot, Lowes, Menards and other big box stores. The main reason is convenience - you can go there, kick the tires and buy one. Even take it home with you and install it yourself. But, there is a trade-off! The trade off is that with a Kenmore, Whirlpool, Morton, North Star, GE or WaterBoss, you are getting a "throw-away" water softener. Look at their warranties. They have a 1 or 2 year warranty on the valve and electronics and 10 years on the tanks. The US Water FLEX has a 7-year warranty on the valve and a lifetime warranty on the tanks. Which one do you think will last longer - the one with the one-year warranty or the one with the seven-year warranty? I think the average fifth-grader knows the answer to that one. It seems that everyone makes the mistake of buying one of these "throw-away water softeners" once. Don't make the same mistake twice! In fact, if you are reading this, you don't have to make it once.

With just one internal moving part, the FLEX is virtually trouble-free. My eighth-grader can install it with the manuals and videos offered by US Water and if there is a problem, US Water has Certified Water Specialists available to answer your questions and solve your problems 365 days a year from 8 AM until 11 PM. If you have ever had a water softener you already know that there are many dramatic benefits, things like:

  • Saving over 50% on soaps, detergents, cleansers, chemicals and water conditioning agents (in most families, that amounts to several hundred dollars a year);
  • Saving over 30% on the cost of water heating (hard water scale insulates the heat from the water and requires dramatically more energy);
  • Extending the life of water using appliances like dishwashers, washing machines, icemakers, faucets, drains and water lines dramatically;
  • Making your clothes whiter and brighter and extending the life of the fabrics;
  • Smoother, silkier skin and shinier hair to say nothing of smoother shaves; and
  • No spots on dishes, fixtures and showers.

A water softener is probably the ONLY appliance that saves you money while making life more enjoyable in the process. Now the next FLEX makes it possible to have a compact water softener that will last a lifetime. There's no reason you should not be enjoying the luxury of soft water, regardless of where you live.

Prev Post
Next Post


March 22, 2018 Jack Schubert

I have a flex we with a broken lid on the brine fill opening. Can I purchase a replacement lid

May 23, 2018 Maryann

Can it be installed to cover the entire property, not just the house. We would like to reduce lime scaling in the pool. We have a 1960 ranch remodel so space where the main line comes in is tight.

May 26, 2018 Mark Timmons

It is generally best not to use soft water in a pool. If your water is highly mineralized with evaporation of calcium and magnesium which causes scale. However, if you soften it, you have large amounts of sodium concentrated. Some people use reverse osmosis for such things. If you are interested in that, contact us at 800-608-8792.

June 05, 2018 Lorraine

I have very rusty water in a 700 so ft house 2-3 people will a compact small unit do the trick and where do I get one? Live up north Michigan area city of Glennie!!

June 07, 2018 Mark Timmons

Here is our smallest:

November 14, 2018 robert moore

I am interested in your flex model for a lake cabin. Can you tell me where to find a dealer and the price.

November 15, 2018 Mark Timmons

The Flex has been replaced with this model, which is even more compact:

We do not have dealers. We sell direct and cut-out all the middlemen. You can buy direct from us.

January 27, 2019 Ileana

Hi, we live in Florida and have started to notice our laundry appears to not be getting clean. I seem to be using more and more detergent with every wash and fabric softeners for the nice smell, but when the clothes come out they still have that dirty hamper odor like if they were never even washed. I am assuming this is due to hard water, just not sure why it started recently if we have lived here for 15 years. We do not like the slimy feeling of a softened water when we shower. So, my questions are:
I was told there is a setting so that the slimy feeling is less when showering? Is this true?
Is there a type of inline softening or small unit for the water coming into washing machine only?
Since we are not sure how much longer we will be in our home and may possibly be in an rv or much smaller home, is there a portable unit we could install for our laundry now and then take with us to use elsewhere for different needs?

January 28, 2019 Mark Timmons

You can blend some hard water back with the soft, but it really defeats the purpose of a water softener. You call it “slimy” – I call it “silky.” The soap is rinsed off with soft water while it remains embedded in your pores with hard water. The first time you wash your clothes with soft water, you may not have to add soap… there’s enough soap left in them to wash them the first time. The same is true of your skin. I know of no portable systems that would be effective.

March 06, 2021 Tanya

I just moved into an apartment and the water here makes my hands hard, rough and itchy. How much would a small water softener system cost? I live in Highland Indiana

March 15, 2021 Mark Timmons

Here is our most popular one for small spaces:

October 02, 2021 Linda

Why don’t you answer these questions? I liked what I read but your failure to answer and a person repeatedly asking about a broken lid being replaced has me concerned.

October 07, 2021 Mark Timmons

We have operated this blog for many years. As a result, there are hundreds (sometimes thousands) of spam or “bot” e-mails every day. It is very difficult to find the real questions. But, if you have a real question, we have contact forms, a phone number and e-mail that we answer immediately. This is a blog and should not be used for customer service. If you have any questions, please let us know and we will answer them immediately.

August 26, 2022 as

Would this mini softener be sufficient to filter a small condo? The bathroom and kitchen?

September 05, 2022 Mark Timmons

It depends upon the water’s hardness and how many gallons will be used each day. It’s that simple. Call one of our water specialists to discuss (800) 608-8792

Leave a comment

Please note, comments need to be approved before they are published.

Someone recently bought a
[time] ago, from [location]

Thanks for subscribing!

This email has been registered!

Shop the look

Choose Options

Edit Option
Back In Stock Notification
this is just a warning
Shopping Cart
0 items