Fleck 5600SXT Review: Healthier Water That Doesn’t Burn Your Pocket

Updated: April 16, 2021 by Zac Harding

Clogged pipes, broken coffee makers, and stubborn dishwashers – hard water is clearly a problem. The culmination of metals and phosphates may seem invisible to us, but it wreaks havoc on our homes, utensils, kitchen electronics and so much more.

Fortunately, Fleck, a trusted industry leader, offers water softeners that make it easy to reduce or eliminate hard water. Even better, the nominal cost will easily pay for itself in terms of reduced home maintenance and product replacement.

Of course, given what’s at stake, it’s vital to make an informed decision. That’s why we’ve prepared Fleck water softener reviews for savvy consumers like you!

The Proper Criteria for a Water Softener

Before we dive into our Fleck 5600 SXT review, we should first discuss what defines a quality water softener. Though most are pretty standard, it’s a good idea to know which factors are most important. Plus, some features simply work better than others.

Installation and Compatibility

How easy is installation? Most water softeners are actually designed to make this easier. However, the assistance of a professional is likely still necessary. This is especially true if you are unsure of how to determine a specific unit’s compatibility with your home.


The beads used in a water softener’s filtration process need to be recharged regularly. Older systems did this by setting a schedule. This was largely an estimate, and there are many variables that could render it inaccurate. Newer systems either use computers to monitor the beads’ current state or a meter that automatically recharges when necessary.

Speaking of recharging, another consideration is whether or not a softener will work during this process. Since you can’t always predict when a recharge is necessary, it’s useful if a backup reservoir still provides softened water when needed. However, they’re typically limited and may pour much more slowly.

Fleck 5600SXT Review

Fleck 5600sxt Metered On-demand 48,000 Grain Water Softener with brine tank, bypass and 1" adapters


Ultimately, our Fleck 5600SXT review leads us to endorse it as a top choice among water softeners. It utilizes the latest technologies to offer superb results, seamless recharging and ease of use. At $628, it pays for itself in lifetime home maintenance fees. To learn more, read the rest of our Fleck 5600 review below.


Main Features

The 5600 builds on its mechanical predecessor with updated computer-controlled monitoring of recharge cycles. This removes the guesswork of whether or not your water softener should actually be recharged. It also removes much of the need for manual monitoring and maintenance, though you should still check your unit occasionally.

Another updated feature you’ll love is the reduced reliance on moving components. The problem with water softeners is that more moving parts mean additional components that need repair over time. Thanks to increased computer automation, the 5600SXT only has one. As such, it’s easier to replace and less likely to take out the entire unit if something does go wrong.

The computer also provides customizable settings for proper regeneration. These include the ability to do so on specific days or under certain circumstances. To help you program the setting properly, a display shows the remaining gallons. Even better, it features its own backup power so that the settings are maintained during the event of power loss.

Overall, installation is easy, but it will require a little know-how. The 5600SXT comes with manuals and spec sheets designed to make the process a breeze. If you are familiar with basic home plumbing or maintenance, you’ll also be happy to hear about its MPT connectors and bypass valve, both measuring in at a little under one inch.

Fleck 5600SXT Water Softener Review

The Best and Worst of our Fleck Water Softener Review


  • Computerized automation for enhanced efficiency.
  • 250 lb. salt capacity.
  • Customizable settings
  • More time between recharges means less impact on the environment.
  • Few moving parts means reduced maintenance and a longer lifetime.


  • Some of the included screws are of low quality and will have to be replaced.
  • Fleck is increasingly removing owner’s manuals, forcing you to find them on their website.

Final Considerations

At the conclusion of our Fleck water softener review, we ultimately do recommend the 5600SXT. It’s a solid choice built on proven functionality and modern innovation. And its slight shortcomings are easy and affordable to remedy.​

You’ll also love the 5600SXT if you’re a style-conscious homeowner. Its design is both modern and discreet which makes it easy to blend into your interiors. Also, it comes in a variety of colors. The unit is then topped off with a vibrant display.

To back up its claims of reliability, Fleck offers an impressive 10-year tank warranty to cover the 5600SXT. This is on top of its 5-year valve warranty. Compare that to the time it takes for hard water to begin clogging your pipes and damaging your appliances!

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