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Fleck 5600SXT 64,000 Grain Electronic Demand Deluxe Water Softener

64,000 grain capacity with 10% crosslink resin — serves 2-8 people, 3-5 bathrooms

Trusted by 10,000+ Homeowners
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🇺🇸 Made in USA

Fleck 5600SXT 64,000 Grain Electronic Demand Deluxe Water Softener

64,000 grain capacity with 10% crosslink resin — serves 2-8 people, 3-5 bathrooms

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In Stock — Ships from Ohio warehouse by
Aidan Walsh
Not Sure Which Water Softener Size You Need? Every home's water is different. Aidan has helped thousands of homeowners pick the right softener size based on their water hardness, household size, and daily water usage. Call or text for a personalized recommendation — no obligation, no sales pressure.

Complete 64,000 Grain Water Softener System

  • Fleck 5600SXT digital control valve — NSF Certified electronic demand valve with large blue backlit LCD, 48-hour power backup capacitor, and up to 6 independently adjustable regeneration cycles
  • Vortech mineral tank (13" x 54") — gravel-free design for better flow distribution and easier resin changes
  • 2.0 cubic feet of 10% crosslink softener resin — premium chlorine-resistant resin that outlasts standard 8% by 20-30%
  • 1" stainless steel bypass valve — pre-installed on the control valve for easy maintenance access
  • Large salt tank (18" x 33") with safety float — auto-shutoff prevents overflow during regeneration
  • Free shipping to all lower 48 states
Ships ready to install: Resin is pre-loaded in the tank and the bypass valve is pre-installed on the valve head — eliminating two major installation steps. For homes with acidic water (pH below 7), add an acid neutralizer before the softener to protect the resin and plumbing.

System Overview

Grain Capacity64,000 grains
Resin Volume2.0 cubic feet of 10% crosslink resin
Household Size2-8 people / 3-5 bathrooms
Control ValveFleck 5600SXT (electronic demand)
Service Flow RateUp to 12 GPM (continuous)
Connections1" female NPT inlet/outlet
Drain Connection1/2" female thread
CertificationNSF Certified
Made InUSA

Vortech Mineral Tank

Dimensions13" x 54" (13" diameter)
MaterialPolyglass composite
DesignVortech — gravel-free (no underbed required)
Warranty10-year manufacturer warranty

Fleck 5600SXT Control Valve

RegenerationElectronic demand (meter-initiated)
DisplayLarge blue backlit LCD
Power Backup48-hour internal capacitor
ProgrammingTime of day, hardness, capacity, regeneration time, day override
Cycle TimesUp to 6 independently adjustable cycles
Bypass1" stainless steel (included, pre-installed)
Warranty5-year manufacturer warranty

Contaminants Removed

Hardness (Calcium/Magnesium)Full removal
Iron (dissolved/clear water)Up to 2-3 PPM
RadiumSignificant reduction
BariumSignificant reduction
Resin pre-loaded. Bypass pre-installed. Most homeowners complete installation in 2-3 hours with basic plumbing tools. No special skills required.

Installation Steps

  1. Shut off the main water supply and relieve pressure at a nearby faucet
  2. Position the softener near a floor drain or utility sink for the drain line (needed for regeneration backwash)
  3. Connect the inlet and outlet to your main water line using 1" connections — water direction is marked on the valve head
  4. Run the drain line from the valve to the floor drain (flexible 1/2" tubing, max 20' with no more than 8' of elevation)
  5. Add salt to the brine tank — fill about halfway with water softener salt pellets
  6. Open the bypass valve slowly to fill the tank, then switch to service position
  7. Program the 5600SXT valve: set time of day, water hardness, and tank capacity (takes about 5 minutes)
  8. Run a manual regeneration to flush the system and seat the resin bed

Recommended System Order

Well / City Supply Pressure Tank Sediment Filter Acid Neutralizer Water Softener (this unit) House
Need help? Call or text Aidan at 800-460-5810 — available 7 days a week. We walk you through the entire installation and programming process, step by step.
Low maintenance — the 5600SXT handles regeneration automatically. Just keep salt in the brine tank and the system takes care of itself.

Maintenance Schedule

  • Monthly Check salt level. Keep the brine tank at least 1/3 full with water softener salt pellets. Avoid rock salt — it contains impurities that can clog the brine system.
  • Every 7-10 Years Replace the softener resin. Our 10% crosslink resin lasts longer than standard 8%, but it does eventually wear out. Signs: hard water returning, increased salt usage, or resin beads appearing in water. Use the included fill funnel to add fresh resin.
  • Annually Clean the brine tank. Once a year, let the salt run low and clean the tank to remove any salt bridges or mushing that can impair regeneration.
  • As Needed Check the venturi and injector. If regeneration seems sluggish or the system isn't drawing brine, the venturi assembly may need cleaning. Takes 5 minutes with no tools.
Pro tip: Always use 10% crosslink resin for replacement — standard 8% degrades faster, especially if you have any chlorine in your water. Questions about maintenance? Call or text 800-460-5810.

Video Guides

Watch our water softener guides has 32 years of industry experience.


Why Choose the Fleck 5600SXT 64,000 Grain Water Softener?

Professional-Grade Hard Water Treatment Backed by 29+ Years of Experience

The Fleck 5600SXT 64,000 grain water softener eliminates hard water problems — calcium buildup on fixtures, dry skin and hair, soap that won't lather, and staining caused by dissolved iron. It uses electronic demand regeneration to track your actual water usage and only regenerate when needed, saving salt and water compared to timer-based systems. This system includes 2.0 cubic feet of 10% crosslink softener resin, which resists chlorine damage and lasts 20-30% longer than the standard 8% resin found in most competing softeners. The Vortech gravel-free tank provides better flow distribution and makes future resin changes easier. At 64,000 grains, it's sized for households of 2-8 people with 3-5 bathrooms. The Fleck 5600SXT is the most popular residential water softener valve in America — proven reliable over decades, with readily available parts and technicians who know how to service it. The large backlit LCD shows remaining soft water capacity, regeneration status, and time of day. A 48-hour internal capacitor preserves your settings during power outages.
64,000 Grain Capacity
Fleck 5600SXT Valve
10% Crosslink Resin
NSF Certified
Electronic Demand
Made in USA
Mid Atlantic Water Trust Logos
Feature Our System Others
Control Valve Fleck 5600SXT (NSF Certified) Generic / No-Name Valve
Resin Quality 10% Crosslink (Chlorine-Resistant) Standard 8% or Unknown Grade
Tank Design Vortech Gravel-Free Standard Gravel-Bed Tank
Regeneration Electronic Demand (Water-Use Based) Timer-Based (Wastes Salt & Water)
Bypass Valve 1" Stainless Steel Included Plastic or Not Included
Power Backup 48-Hour Internal Capacitor None — Settings Lost in Outage
Warranty 5-Year Valve + 10-Year Tank 1-Year Limited
Expert Support 7-Day Phone, Text & Email Limited or None
Salt Tank Safety Float / Auto Shutoff Basic Tank (Risk of Overflow)
Control Valve
✅ Us Fleck 5600SXT (NSF Certified)
❌ Them Generic / No-Name Valve
Resin Quality
✅ Us 10% Crosslink (Chlorine-Resistant)
❌ Them Standard 8% or Unknown Grade
Tank Design
✅ Us Vortech Gravel-Free
❌ Them Standard Gravel-Bed Tank
Regeneration
✅ Us Electronic Demand (Water-Use Based)
❌ Them Timer-Based (Wastes Salt & Water)
Bypass Valve
✅ Us 1" Stainless Steel Included
❌ Them Plastic or Not Included
Power Backup
✅ Us 48-Hour Internal Capacitor
❌ Them None — Settings Lost in Outage
Warranty
✅ Us 5-Year Valve + 10-Year Tank
❌ Them 1-Year Limited
Expert Support
✅ Us 7-Day Phone, Text & Email
❌ Them Limited or None
Salt Tank
✅ Us Safety Float / Auto Shutoff
❌ Them Basic Tank (Risk of Overflow)
Aidan Walsh

Got a Question About Your Water Softener?

Whether you need help with installation, programming the 5600SXT valve, salt settings, or troubleshooting, Aidan is available 7 days a week. Real answers from someone who has been doing this for 29+ years.

📞 Call Us 800-460-5810
✉️ Email Support support@midatlanticwater.net
🕒 Live Hours 7 days a week

Frequently Asked Questions

The Fleck 5600SXT valve is rated for 15-20+ years with proper maintenance — it's the most popular residential water softener valve in America because of its proven reliability and extensive parts availability. The Vortech mineral tank carries a 10-year manufacturer warranty. The 10% crosslink resin typically lasts 7-10 years before needing replacement (longer than standard 8% resin because it resists chlorine degradation better).

Standard water softener resin uses 8% crosslinking in the polymer structure. Our 10% crosslink resin has a tighter molecular bond that makes it more resistant to chlorine damage, oxidation, and physical breakdown. This means it lasts 20-30% longer than standard resin — especially important if you're on city water with chlorine, or well water with iron. The higher crosslink percentage also maintains better bead integrity over time, so you get consistent softening performance year after year.

The Fleck 5600SXT tracks your actual water usage and only regenerates when the resin is actually exhausted — not on a fixed timer. This saves salt and water compared to timer-based systems that regenerate whether they need to or not. The valve calculates your remaining soft water capacity based on your programmed hardness level and the amount of water you've used, then triggers regeneration at the optimal time (usually 2 AM). You can also see the remaining capacity on the backlit LCD display.

Size depends on your water hardness (in grains per gallon) and daily water usage. A 32,000-grain softener handles 2-5 people with 2-3 bathrooms. A 48,000-grain handles 2-8 people with 2-5 bathrooms and is our most popular size. A 64,000-grain is for larger homes with 3-5+ bathrooms or higher hardness levels. If you're not sure, call Aidan at 800-460-5810 with your water test results — he'll recommend the right size for your specific situation.

Yes — most homeowners with basic plumbing skills install these themselves. The system ships with the resin pre-loaded in the tank and the bypass valve pre-installed on the control head, so the main work is connecting the inlet/outlet to your plumbing (1" connections) and running a drain line. Programming the 5600SXT valve takes about 5 minutes. We have installation videos on our YouTube channel, and Aidan is available 7 days a week at 800-460-5810 to walk you through the entire process.

If your water pH is below 7.0 (acidic), yes — you should install an acid neutralizer before the water softener. Acidic water corrodes plumbing and can damage the softener's resin and valve over time. The neutralizer raises your pH to a safe level, and the softener then removes the hardness. This is especially common with well water in the Mid-Atlantic region. We sell acid neutralizer and water softener packages that include both systems.

A water softener can remove small amounts of dissolved (clear water) iron — typically up to 2-3 PPM. For higher iron levels, you need a dedicated iron filter installed before the water softener. Iron damages softener resin over time, so if your water test shows more than 2-3 PPM of iron, we recommend an iron filter and water softener package to protect both systems and give you clean, soft water.

Fleck 5600SXT 64,000 Grain Electronic Demand Deluxe Water Softener
Fleck 5600SXT 64,000 G... $2,195.00

Why Our Water Softener Costs More

Fleck 5600SXT vs Budget Water Softeners

What You Get With Budget Water Softeners

Budget water softeners sold on Amazon and at big box stores use no-name valves, low-grade resin, and timer-based regeneration that wastes salt and water. The valves fail within 3-5 years, parts are unavailable, and you end up replacing the whole system.

The resin in cheap softeners is typically standard 8% crosslink — or worse, unmarked grade — that degrades quickly, especially if you have any chlorine in your water. You'll burn through resin in 3-4 years instead of 7-10, and there's no expert support to help when things go wrong.

The Real Cost Comparison

Budget Water Softener
$400-800
  • Lifespan: Fails in 3-4 years
  • Result: Frequent repairs, poor water quality, leaks
  • Support: None
$0.27-0.73/day (3-5 year lifespan)
Best Long-Term Value
Our 64,000 Grain System
$2,195
  • Lifespan: Lasts 15+ years
  • Result: Done right the first time, peace of mind
  • Support: Lifetime USA Support
$0.25-0.40/day (15-20 year lifespan)

When you factor in the 15-20 year valve life, the longer-lasting resin, the salt and water savings from demand-based regeneration, and the expert support included at no extra cost, this system delivers better value per year than budget alternatives that need replacing every 3-5 years.

What You Get With This System

The Fleck 5600SXT is the most widely-used residential water softener valve in America — it's proven, parts are available everywhere, and technicians know how to work on it. We pair it with 10% crosslink resin that resists chlorine damage and lasts 20-30% longer than standard resin.

Every system ships with the resin pre-loaded and the bypass pre-installed, and you get 7-day-a-week expert support from real water treatment professionals with 29+ years of experience. We help you size the system, install it, program it, and troubleshoot it — all at no extra cost.

Contact Us
800-460-5810

We're here to help.

1-Year Risk-Free Guarantee

Proven in Thousands of Real Homes

If this water softener fails to eliminate your hard water problems within 30 days of installation, contact us and we'll work with you to resolve the issue — whether that means troubleshooting your setup, adjusting your programming, replacing a component, or issuing a full refund. No shipping a 200+ pound wet tank back to a warehouse. No restocking fees. No runaround.

10,000+ Systems Installed
455+ Verified Reviews
29+ Success Rate

After 29+ years of selling and supporting water softeners, we know what works and what doesn't. The Fleck 5600SXT is the most popular residential water softener valve in America for a reason — it's reliable, programmable, and backed by an extensive parts network. We pair it with 10% crosslink resin and Vortech tanks because that combination delivers years of trouble-free soft water.

The Industry "Return Policy" Trap +

Most online water treatment retailers offer a "return policy" that requires you to ship the entire system back at your expense — including a heavy, wet mineral tank full of resin and a salt tank. After paying $200+ in return shipping, you often discover a 15-25% restocking fee on top. It's designed to make returns impractical. And for something as essential as your home's water quality, you shouldn't have to gamble.

How Our Real Guarantee Works
1
It Doesn't Fix the Hard Water

If your water test still shows hard water after installation, that's on us. The system should eliminate hardness — period.

2
You Call Us, We Fix It

We troubleshoot with you — water test results, valve settings, installation review, flow rates. Most issues are resolved with a simple programming adjustment or plumbing correction.

Full Refund, No Hassle

If we can't resolve the issue, you get a full refund. We handle the logistics. You don't ship anything back. That's the difference between a real guarantee and a return policy.

Aidan Walsh

I've sold thousands of Fleck 5600SXT softeners over 29 years. It's the valve I recommend because it works — and when you pair it with quality resin and a Vortech tank, it delivers soft water for years without issues.

Aidan Walsh
Aidan
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