Fleck 5600SXT Water Softener Review: Is it Worth Your Money?

by Jay | Updated on November 7th, 2022

Among many various water softeners, Fleck offers a complete set of water softeners with varying grain capacities, including the Fleck5600SXT control valve.

It is no longer a mystery that Fleck is a well-known brand, and the reviews are equally positive, so why not go for it? However, there will be plenty of additional reasons to buy Fleck. So let’s go exploring.

Fleck 5600SXT Water Softener

Is Fleck a good brand?

When it comes to water softening systems, Fleck is one of the most trusted companies. This is because they are inexpensive, dependable, simple to install, and have many excellent customer evaluations.

In addition, it is owned by Pentair Water Treatment, which offers a 5-year warranty on its products.

Is the Fleck 5600 SXT 48,000 Grain Water Softener a good investment?

Investing in high-quality equipment, such as the Fleck 5600 SXT, will pay you handsomely in the long run. When you use soft water, you will, for example, extend the life of your water-using gadgets.

Using soft water also has several health benefits. For example, if you’ve had skin and hair problems from hard water, you’ll be able to say goodbye to them once you start using the Fleck 5600 SXT.

With soft water, every device, from your washing machine to your dishwasher, will function more efficiently and clean more effectively. When you wash your clothes and dishes in soft water, they will look nicer.

When you start using soft water for your daily domestic duties, your home’s plumbing will run more efficiently. In addition, the water softener will pay for itself in a few years of use because you will save all of the costs connected with hard water problems.

And because this unit is already so inexpensive, requires no maintenance, and will last for the next two or three decades, it will continue to provide those benefits consistently.

Who should use Fleck 5600sxt?

This water softener is ideal for you if you have a small or medium-sized family of 5-6 people. The unit’s innovative water softening technology can easily treat any level of hard water.

The control head guarantees that no salt or water is wasted. The Fleck 5600 SXT’s clever regeneration technology regenerates the resin beads only when they have reached their maximum capacity. The Fleck 5600 SXT 48,000 Grain Water Softener is the device you need if you want a high-performance, automated, and maintenance-free water softener.

It’s also a good option for office buildings and small retail establishments.

However, this model does not help with sulfur, iron, chlorine, or any other impurities present in your well or city water. This is only for people who have hard water problems. Consider installing a specialist filter to deal with additional pollutants.

Reviews of the Fleck 5600sxt water softener

Fleck creates water softeners that work well with the 5600SXT control valve. Furthermore, it has been tested to run well for 27 years on the same machine. So there is no more question since each buyer has unique needs based on household size and hardness.

As a result, while the capacity varies, many features stay constant. We combed through customer reviews on Fleck 5600 water softeners and selected the finest ones for you. First, we’ll go through the features that each system has in common.

What are the benefits of using Fleck?

Why should you think about purchasing a Fleck water softener? Here are the benefits of utilizing a Fleck water softener:

  • Easy access to parts – First and foremost, the pieces are simple to locate. A fast search on the Internet will turn up many sellers selling Fleck parts, systems, and replacement cartridges.
  • Very good customer service – Most online customer feedback reports good and helpful customer service.
  • Eco-friendly items — Fleck devices are normally manufactured of high-quality materials and are designed to have a low annual power usage. As a result, they require less salt and are therefore better for the environment.
  • Economical – Fleck offers some of the market’s most affordable water filtration solutions. This includes offering a wide range of setups, ensuring you can always find something within your price range.
  • Simple to use — Each Fleck water softener has an electronic power head with a button panel that allows you to program the unit.
  • WQA certified – This is one of the highest levels of certification and attests to the brand’s quality.
  • Easy to install – Fleck units are normally delivered fully constructed and ready to be plumbed. It will also include an instructional video guide with step-by-step instructions for the installation process.
  • Easy to program — Fleck softeners (particularly the best-selling 5600SXT) are simple to set up.

The features of Fleck 5600sxt

The Fleck 5600sxt has a few interesting features. While some may consider it a large unit, its various functions justify its size.

Hard water is removed.

As you may be aware, hard water is not the best thing to have around. This model employs an ion exchange process to remove the calcium and magnesium. Scale is caused by these two minerals, which are hazardous for you and your kitchen appliances. If scale accumulates in the pipes for an extended period, you will have to replace them.

Units like these are quite beneficial in areas with hard water. Softeners are a must-have item in every home that suffers from hard water, scale, or toxic minerals.

System of Regeneration

This model features a novel regeneration system. It monitors the amount of utilized water and only regenerates the fresh tank’s contents when necessary. This feature is quite beneficial in terms of water and money savings.

You can also adjust numerous parameters to tailor the unit to your needs. The SXT digital controller is built within the main valve. Because of its excellent precision, consumption is kept to a bare minimum.

SXT Controller

One of the advantages of this device is the current technology that comes with it. This controller includes a set of configurable parameters that may be customized and shown on a backlit LCD. In addition, this high-quality unit comes with touchpad controls, an integrated emergency battery, and an easy-to-use interface.

The storage tank

The tank is huge, but because of the elongated form, it does not take up as much space as you might imagine. However, remember that it is a large tank holding up to 250 pounds of salt. The measurements are 15′′x17′′x33′′. The reservoir includes a safety float to prevent overfilling and overflow. The presence of these security features demonstrates that it is a user-friendly unit.

Installation is simple

While some tanks necessitate expert attention, this one does not. It’s one of the simplest to set up. Within two hours, you can properly construct the machine with the help of the handbook. Of course, some individuals disagree that it is a simple installation, but most overlook the user manual’s value.

The cost

Although it is not the cheapest model on the market, it is well worth the money. Keep in mind that there is a distinction between a standard and an enhanced model. While the standard version is highly useful and efficient, the upgraded version is not worth the extra money.

It does have a few advantages over the standard model, although the majority of them are minor. There are also models with the same characteristics as the upgraded ones that are significantly less expensive. However, it all boils down to your requirements and personal tastes.

Components in package:

Each water softener has a resin tank to which you can add salt or resin. In addition, a theoretical brine tank with a safety float where the hard water softens. The Fleck 5600 SXT control valve is a required component. Each kit includes an instruction manual, making installation a do-it-yourself project for all home residents.

For your convenience, the package includes a sanitizer and lubricant. The package also includes test strips for checking water hardness before and after installation. As a result, there will be little to no need to rush to the market when installing.

Digital display

The Fleck 5600 SXT control valve includes an LCD that displays the time and capacity remaining before a regeneration cycle begins. So you can predict when it will regenerate. It will also display whether or not the regeneration cycle is active. It also keeps track of water usage and regenerates based on preset requirements.

In addition, there is a touchpad for easy programming. For example, the water hardness and regeneration cycle indicated on the test strips can be set using the touchpad.

Power backup

Because Fleck 5600 SXT water softeners are electronic, they require power to function properly. As a result, there is a 48-hour internal power backup to ensure that activities continue smoothly in a power outage.

A microprocessor also saves the programming and does not return to the default settings. So, configure it and forget about any potential problems because there will be none in your life.


There are three regeneration options available in the system: immediate meter regeneration, delayed meter regeneration, and delayed time clock regeneration. Your water softener will quickly regenerate when it hits the capacity you preset on the control valve for immediate meter regeneration.

The water softener will not regenerate promptly after capacity is depleted in the case of delayed meter regeneration. Rather, it will wait for the regeneration time you set.

In delayed time clock regeneration, the water softener will follow the time clock and regenerate accordingly, regardless of whether the capacity you set on the valve has been achieved. You can also select one of your options to reduce salt and water wastage.

In addition, a safety float in the brine tank prevents overfilling. When the flow rate of incoming water fluctuates, water will not enter the tank beyond a safe level. Furthermore, an overflow drain is available to serve as a backup. If the safety float cannot control the extra water inflow, it will maintain the water flow rate. 

If the safety float cannot control the extra water inflow, it will maintain the water flow rate.


Fleck 5600 SXT uses the ion exchange mechanism in its water softeners. This process decreases hardness by removing calcium and magnesium from the water. It attracts positive ions of calcium and magnesium with the help of negative ions of salt or resin. As a result, the water will be softer.

Furthermore, the system can remove water spots, scale buildup, rust, stains, and soap scum from anything in touch with water. It also enhances the lather of detergent, soap, and shampoo.

Technical support

The instruction manual included in the package is sufficient to make installation and programming easy. As a result, video installation aids in making it a do-it-yourself project for everyone. Furthermore, even over the phone, customer service provided by competent individuals is amazing. So you can chat with an expert over the phone, and they will give you the best advice.

A 10-year warranty from Fleck covers the tank. A 5-year guarantee is also available on the control valve. However, you should be aware that the Fleck 5600 SXT control valve has been tested to operate continuously for up to 27 years.

Our top picks of the fleck 5600sxt water softener

1. Fleck 5600sxt 80,000-grain water softener

The Fleck 5600SXT is the biggest water softener fleck offering, with 80,000 grains. In addition, this water softener component includes a Fleck 5600SXT control valve made by Fleck.

This water softener was rated as the best option for large families. Install it once and enjoy soft water throughout your home for the rest of your life. Let’s have a look at some of its key features below.


It has a flow rate of approximately 12 gallons per minute. As a result, it is only sufficient for a household of ten people. However, it will keep supplying water to each faucet indefinitely. And there will never be a drop in the flow rate.


When it arrives at your home, the entire system weighs 139.5 pounds. So it may appear to be a large water softener. But it’s worth it for the effort it puts in for your family.

2. Fleck 5600sxt 64,000 grain

If you believe your household is not large, here is a review of the Fleck 5600SXT grain water softener. It’ll still be enough for your entire family, including grandparents or grandchildren.


It has a capacity of 12 gallons per minute and a flow rate of 12 gallons per minute. That is the same as the Fleck 5600SXT water softener with an 80k grain capacity. As a result, each faucet’s flow rate will decrease because it is sufficient for eight people at home.


The product weighs 180 pounds. Because it is so large, it is normally shipped in two boxes weighing 120 and 30 pounds, respectively. But don’t worry, the bundle includes a high-capacity resin. As a result, you won’t have to buy it individually.

3. Fleck 5600sxt 48,000 grain ws48-56sxt

Millions of families prefer the Fleck 5600SXT 48,000 grain water softener. It is regarded as the best water softener for the average household. Buy it with conviction, and it will be the best move you’ve ever made for your family. Additionally, it is ideal for pets, appliances, plumbing, and plants.


It has a capacity of 12 gallons per minute and a flow rate of 12 gallons per minute. It is the same as the flow rater provided by the Fleck 5600 SXT 64k and 80k grain water softeners. So it’s more than enough for a family of six to have consistent water flow from every faucet in the house.


The product weighs 120.8 pounds. The package also includes a 2-cubic-foot supply of high-capacity resin. It is also available in 2 separate boxes.


This system will also require a 120-volt power outlet to function properly. At the same time, you’re ordering, set up a power supply point near where you’ll be installing the water softener. The work would have been completed by the time the water softener arrives at your door.

4. Fleck 5600sxt 40,000 grain 56-sxt-40k-m

Install a Fleck 5600SXT 40,000 grain water softener in your home to provide the best water for your family. Within days, you will notice an improvement in the health of everyone in your home. So, if you have youngsters in your home, don’t wait; install it immediately.


This system is ideal for a five-person family with a flow rate of 12 gallons per minute. It is remarkable because the water flow rate does not decrease with capacity.


Resin is also pre-loaded in a 150-pound package. The resin accounts for the majority of the weight. So don’t be concerned about the system’s weight.

5. Fleck 5600sxt 32,000 grain

The Fleck 5600SXT is a 32,000-grain water softener that we rated as the best choice for small families. In addition, if you have a newborn in its early years, you should purchase it because your baby will require the best environment to breathe in.


This system has a flow rate of approximately 15 gallons per minute. So it’s enough for a three-person household. No matter how many faucets you open at once, there will be no loss in water pressure.


The product barely weighs 30 pounds. It is not preloaded with resin. That is the reason for its lightweight.

6. Fleck 5600sxt 24,000 grain

The Fleck 5600SXT with a capacity of 24,000 grains is recommended for newlyweds. Make this water softener a part of your life to give your life a pleasant and healthy start.


Enough for a couple of residents in a single-family home. It also has a flow rate of up to 12 gallons per minute. Water can be used at several points around the house.


The product weighs 150 pounds and comes pre-loaded with resin. So don’t be bothered by its heft. It is for your convenience because you will not have to add resin to the tank.

7. Fleck 5600sxt 16,000 grains ships loaded

If you live alone in an apartment, we recommend the Fleck 5600SXT with a grain capacity of 16,000 grains. Bachelors consider it to be the best option. It will be a good buddy.


A single-family home can have a flow rate of up to 12 gallons per minute. Also appropriate for RVs. It will accompany you wherever you choose to live.


The product weighs 125 pounds and comes pre-loaded with resin. As a result, the total cargo weight is 150 pounds. The good news is that you will not have to add resin to the tank manually.


The Fleck 5600sxt is a solid pick in the high-end softeners area if you don’t have a restricted budget. It has an excellent variety of features and, most importantly, it operates admirably. In addition, the quality is unquestionable because it is manufactured by Fleck, a company known for producing high-grade goods.

Owners of tiny houses may wish to avoid this device because installing it inside a small thing is a bit overdone. Moreover, it is simply not cost-effective.

On the other hand, medium and big households benefit substantially from its high-tech features such as programmed cycles, water saving, ion exchange process, and more. In addition, the valves are carefully designed to operate at peak performance at all times.

You’ll get a terrific warranty from a reputable organization, which will suffice as proof of quality and confidence. One thing is certain about the Fleck 5600sxt: it provides fresh and filtered water 24 hours a day, seven days a week, regardless of the weather.


Is there a low-salt indicator on the system?

No. Check the brine tank every few weeks and refill the salt when it has dropped to a few inches.

Is it safe to use with well water?

Yes, however, if your iron levels are high, you’ll need to use an iron pre-filter.

How long does it take for the regeneration cycle to complete?

approximately two hours

Who makes Fleck 5600SXT?

Fleck Controls used to be known as L.W. Fleckenstein, INC., and they had a “Fleckenstein valve.” They are currently known as “Fleck Controls,” owned by Pentair Water, a global conglomerate of water-related businesses.

How long does a fleck water softener last?

Even if the control head is covered by a 5-year warranty and both tanks are covered by a 10-year warranty, the Fleck 5600 sxt can last 25-30 years. Depending on the amount of water used and the hardness, a bag of 40 pounds of water softener salt must be supplied to the brine tank every 4-6 weeks.

What kind of salt do you use in a water softener, Fleck?

Water softeners and conditioners operate best with sodium chloride (also known as salt) or potassium chloride (actually a type of salt). Unfortunately, some softening salt pellets offered in supermarkets or home improvement stores have a significant concentration of water-insoluble materials or contaminants.

How often should a water softener regen?

Regular regenerations are generally considered the best since they keep the resin bed active. Although very efficient softeners may generate every day or several times, this should be done every two or three days.


Jay is a health and wellness enthusiast with expertise in water quality and nutrition. As a knowledgeable advocate for holistic well-being, Jay successfully manages Type 2 Diabetes through informed lifestyle choices. Committed to sharing reliable and authoritative insights, Jay combines firsthand experience with a passion for enhancing health."