Fleck 5600 SXT Whole House Water Softener
$790 price checked August 2026
If you want a system that arrives ready to use with resin already in the tank, this is the one.
Where the Fleck 5600 SXT Fits
The Fleck 5600 SXT Whole House Water Softener is for homeowners needing a reliable system for a standard 3-bedroom home because its 40,000-grain capacity meets the 32,000-grain threshold for moderate hardness.
Hard water breakthrough leads to scale buildup on fixtures and appliances, requiring a system that can consistently manage mineral content. If your water source causes frequent clogging or spotting, a high-capacity resin system is necessary to maintain water quality.
The Fleck 5600 SXT Whole House Water Softener provides a 40,000-grain capacity, which exceeds the 32,000-grain threshold required for a standard 3-bedroom household. This capacity ensures the resin remains effective even during periods of high usage.
We evaluated the Fleck 5600 SXT Whole House Water Softener against the other grain water softener options we compared to determine its performance. This review is for upgraders looking for a reliable digital control head with a 5-year valve warranty and a 10-year tank warranty.
How Green Writer picked: we started from the 53 most-reviewed grain water softener listings in our retail dataset, removed duplicates, accessories and off-category products, and 28 qualified. This product is one of 15 from that pool chosen for a full review. Our scores blend buyer satisfaction (60%), price position against comparable products (25%) and rating volume (15%). Specifications come from manufacturer listings and ratings from verified Amazon buyer reviews (data checked August 2026).
The Short Answer on the Fleck 5600 SXT
Best for: you need a reliable system for a standard 3-bedroom home with moderate water hardness.
The DuraWater Fleck 5600 SXT is a strong choice at the $790 price point.
- Pro: The 40,000 grain capacity exceeds the 32,000 grain threshold for standard households.
- Pro: The valve includes a 5 year warranty and the tanks are covered for 10 years.
- Pro: This metered on-demand system uses the Fleck 5600 SXT digital control head.
- Con: The 40,000 grain capacity falls short of the 72,000 grain threshold required for large estates or high-flow irrigation.
- Con: The 4.1 rating suggests a lower level of buyer satisfaction compared to higher-rated alternatives in this category.
Don’t buy this if: your property requires a capacity over 72,000 grains to prevent frequent regeneration cycles.
Price assessment: The $790 price is fair for a system featuring a digital Fleck head and long-term tank warranties.
Green Writer score: 6.7/10 (data-driven – see “How we picked” above)
If you have multiple bathrooms running simultaneously, view our top picks for high flow systems.
The Specifications That Matter
| Capacity | 40,000 Grains |
| Control Type | Digital Fleck |
| Water Compatibility | City and well water |
| Valve Warranty | 5 year |
| Tank Warranty | 10 year |
| Weight | 90 pounds |
| Dimensions | 10 x 10 x 44 inches |
| Origin | Made in USA |
The 40,000 Grains capacity exceeds the 32,000 Grains threshold required to service a standard 3-bedroom household.
Before You Buy: Fleck 5600 SXT Checklist
The first thing to check is the total grain capacity required for your household’s specific water hardness and usage volume.
- ✅ Confirm your grain requirement — 40,000 Grains
- ✅ Verify water source compatibility — City and well water
- ✅ Check resin availability — Ships loaded with resin
- ✅ Account for the warranty period — 5 year valve / 10 year tank
- ✅ Verify the control type — Digital Fleck water softener
You should not buy the Fleck 5600 SXT if your household requires a capacity exceeding 40,000 Grains to prevent hard water breakthrough.
Performance: What the Specs Deliver
Metered On-Demand Operation
Metered on-demand operation in the Fleck 5600 SXT ensures the system only regenerates when you actually use water. Because it is a metered system, it avoids the waste of scheduled cycles that occur regardless of household activity. This allows you to maintain soft water without depleting your salt supply unnecessarily between uses.
The 40,000 grain capacity of the Fleck 5600 SXT provides a significant buffer for standard households. Since 32,000 grains is the threshold to service a 3-bedroom home with moderate hardness, this unit provides enough capacity to handle your daily needs without requiring a regeneration cycle every day. If your water hardness exceeds moderate levels, confirm your daily gallon usage to ensure the 40,000 grain limit meets your specific requirements.
Long-Term Warranty Coverage
Long-term warranty coverage on the Fleck 5600 SXT includes a 5-year warranty on the valve and a 10-year warranty on the tanks. These specific terms provide a long-term service guarantee for the primary structural and mechanical components of the system. You gain peace of mind knowing the core hardware is supported well beyond the standard industry lifespan.
Domestic Manufacturing Standards
Domestic manufacturing standards are met as the Fleck 5600 SXT is made in the USA. This production standard ensures the unit is built to domestic quality requirements and provides a consistent point of origin for the hardware. The structural tank also ships pre-loaded with resin, which simplifies the initial setup of the mineral tank component.
To better understand the technical data, review our guide on water softener terms.
How the Fleck 5600 SXT Compares to Alternatives
The DuraWater Fleck 5600 SXT Whole House Water Softener provides a 40,000 grain capacity, which meets the 32,000 grain threshold required to service a standard 3-bedroom household with moderate hardness.
How does the digital interface compare to the older mechanical versions?
The digital interface on the Fleck 5600 SXT provides a metered on-demand system that triggers regeneration based on actual water usage rather than set time intervals. While the data does not specify the exact screen resolution or button layout, the digital Fleck valve is the industry standard for programming flexibility compared to older mechanical heads. You should confirm the specific control options with the manufacturer to see how the interface handles your local water hardness settings.
How does it compare to other options?
The DuraWater Fleck 5600 SXT is the 2nd cheapest option in our comparison, priced at $790.
- The AFWFilters Fleck 5600sxt 64,000 Grain Water Softener costs $769, which is $21 less than this model.
- The Fleck 5600sxt Whole House Water Softener System at $824 costs $34 more than the DuraWater model.
- The Fleck 5600SXT Digital Water Softener at $839 costs $49 more than this model.
- The Fleck 5600sxt Whole House Water Softener System at $842 costs $52 more than this model.
- The Fleck 5600sxt Whole House Water Softener System at $859 costs $69 more than this model.
If you require a higher capacity for a large estate or high-flow irrigation, the AFWFilters Fleck 5600sxt 64,000 Grain Water Softener is the better pick for its 64,000 grain capacity.
Where This Price Sits
The DuraWater Fleck 5600 SXT sits at the $790 mark, which is $37 below the $827 average for the similar grain water softener products we compared. At this price point, you receive a metered on-demand system and the reliability of a digital Fleck valve. You gain a 5-year warranty on the valve and a 10-year warranty on the tanks, though you may find higher-end models offer additional features like specialized resin for extreme iron levels.
The DuraWater Fleck 5600 SXT is the right buy if you need a 40,000-grain capacity system that meets the 32,000-grain threshold for a standard 3-bedroom household. Regarding salt requirements, the provided specifications do not state a monthly refill volume. You should confirm the specific brine tank capacity and your local water hardness with a professional installer to determine your monthly salt usage.
Where this sits in the buyer data: Among the 25 products screened for this category, this one’s 4.1 rating places it #16, on 44 ratings – above the 12-rating median of that group, so the average rests on more feedback than most of its comparables. On price it undercuts 12 of them.
The Fleck 5600 SXT: Remaining Questions
What happens if the valve breaks after the 5-year warranty expires?
The Fleck 5600 SXT includes a 5-year warranty on the valve, but for repairs beyond that period, you should verify the availability of replacement parts with the manufacturer. Because the valve is a standard Fleck model, parts are typically widely available for long-term maintenance.
Is the Fleck 5600 SXT worth it for a large home?
The Fleck 5600 SXT is suitable for households requiring a capacity of 40,000 grains, which exceeds the 32,000-grain threshold for a standard 3-bedroom home. At the $790 price point, it provides a metered on-demand system that handles moderate to high water hardness.
Does the Fleck 5600 SXT work with well water?
Yes, this system is compatible with both city and well water sources. The structural tank ships pre-loaded with resin to ensure the unit is ready for installation in your specific water environment.
How does the Fleck 5600 SXT handle high water usage?
The Fleck 5600 SXT uses a metered on-demand system to trigger the brine draw based on actual water usage. This prevents the hard water breakthrough that occurs when resin capacity is exceeded in high-flow scenarios.
Is the Fleck 5600 SXT Right for You?
The Fleck 5600 SXT suits 5 kinds of buyer and is the wrong choice for 3 jobs, listed below with the reason for each.
Who the Fleck 5600 SXT is for, and what it does well
Who the Fleck 5600 SXT suits
- Homeowners on well water — compatible with well water systems for removing minerals
- New homeowners in hard water areas — 10 year warranty on the tanks provides long-term security
- Property managers of small apartment complexes — metered on-demand system ensures efficient water usage
- DIY home renovators — made in USA construction ensures reliable parts for home installation
- Families with large households — 40,000 grains capacity handles high-volume water demand
What the Fleck 5600 SXT handles well
- Daily shower and bath routines — whole house digital water softener provides consistent soft water
- Laundry and dishwashing — metered on-demand system ensures water is treated only when needed
- Maintaining plumbing longevity — 40,000 grains capacity prevents scale buildup in pipes
- Remote troubleshooting — free phone support allows for quick technical assistance
- Long-term infrastructure planning — 5 year warranty on the valve ensures reliable operation
What the Fleck 5600 SXT is the wrong choice for
- Large industrial manufacturing plants — 40,000 grains capacity is insufficient for high-volume industrial use
- Commercial laundromats — metered on-demand system cannot handle constant high-pressure industrial flow
- High-capacity agricultural irrigation — 40,000 grains capacity is too small for large-scale farming needs
What to budget alongside the Fleck 5600 SXT, and what to skip
Worth buying at the same time
- Water bypass valve — required for manual override or maintenance of the digital system
- Brine salt — necessary consumable for the resin in the mineral tank to regenerate
- Drainage pipe — required to route waste water from the structural tank
- Water pressure gauge — needed to monitor the flow into the metered on-demand system
- Hardness test kit — needed to calibrate the digital softener to specific water conditions
What you can skip
- Pre-loaded resin bags — structural tank ships loaded with resin in mineral tank
- Replacement valve — 5 year warranty on the valve covers early failures
- Separate storage tanks — structural tank ships loaded with resin in mineral tank
Where to Buy the Fleck 5600 SXT
These retailers sell Grain Water Softener generally – we do not track which of them has this particular model in stock, so check availability and the current price with the retailer before making a trip.
- Lowe’s (online and physical stores) — broad inventory of residential systems and local installation services
- Amazon (online only) — extensive variety of brands and customer reviews
- Build.com (online only) — specialized plumbing supply with trade account options
- Watersoften.com (online only) — specialist retailer with technical expertise and custom configurations
- Ferguson (online and physical stores) — professional plumbing supply for trade and contractor accounts
- Home Depot (online and physical stores) — wide selection of major brands and in-store pickup
Final Verdict on the Fleck 5600 SXT
If you need a system that exceeds the 32,000 grain threshold for a standard 3-bedroom home while offering long-term reliability, the DuraWater Fleck 5600 SXT is the right choice at around $790.
The Fleck 5600 SXT provides a 40,000 grain capacity and a 10-year warranty on the tanks, ensuring the unit handles high-demand usage without frequent regeneration.
Skip it if: You require a high-flow system for a large estate that necessitates the 72,000 grain capacity threshold.
Browse our other Grain Water Softener pages
- Choosing the Best 32000 Grain Water Softener for Your Home
- The Grain Water Softeners That Work Best for Hard Water
- Which Whole House Water Softener Is Best for Small Spaces?
- Best Water Softeners for High Flow Households
- Water Softeners with Sediment Filters Compared
- Choosing the Best Water Softener with Carbon Filter