Fleck 5600SXT Water Softener by Aquatell
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Fleck 5600SXT Water Softener

SKU: AQFLK-1.0-5600SXT


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Ultimate Water Softener Guide

Quickly learn everything you need to know to make a smart softener purchase!

  • Choose efficiency first
  • The right way to choose size
  • Fleck vs Autotrol vs Clack
  • Myths and Misconceptions


The Fleck 5600SXT water softener by Aquatell features the legendary Fleck 5600SXT metered electronic control valve, Structural composite tanks, Fleck 2310 safety float, and 10% cross linked resin (most softeners on the market use inferior 8%). Highly efficient and long-lived, it's the perfect softener for residential applications everywhere. This softener ships fully built to make installation a breeze.


Tech Specs

  • Softener Efficiency Rating (SER): 3,333 grains / pound
  • 10% cross-linked resin
  • Install Location: Point of Entry
  • Softener Tank Dimensions: 8" x 44" (0.75 cubic foot), 9" x 48" (1.0 cubic foot), 10" x 54" (1.5 cubic foot), 12" x 48" (2.0 cubic foot) - add 9" for control valve height
  • Brine Tank Dimensions: 14" x 14" x 35" (includes lid, dimensions at base slightly smaller)
  • 200 pound salt capacity (about 4.5 of the standard bags of salt)
  • Plumbing: 3/4" male threaded connectors
  • Electrical Requirements: 110V Standard

In The Build

  • Fleck 5600 SXT valve with digital controls
  • Structural Poly Glass™ resin tank (black)
  • Bypass valve
  • Plumbing yoke terminating in 3/4" threaded plastic ports
  • Brine tank (black)
  • Brine tank safety float
  • Top basket (prevents loss of resin)
  • Brine line
  • 10% cross linked softener resin


  • 5 years on all components

This warranty is for manufacturer's defects only. Certain water softener components, such as the main piston, seal & spacers, and the brine valve will experience wear and tear during normal usage of the softener and may not be covered. Resin that has experienced unusual application conditions may not be covered.

Customer Reviews
4.7 Based on 60 Reviews
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Filter Reviews:
30 March 2022
Ronald S.
Canada Canada

All good

Doing just great

27 December 2021
lee f.
Canada Canada

Fleck 5600SXT

Everything good. Got it quick and no problems to install

16 November 2021
Reggie D.
Canada Canada

Very happy with this purchase

Fleck 5600SXT arrived quickly and in excellent shape. It was simple to install and is now doing a great job softening my water. Thank you Aquatell!

11 October 2021
Wray H.
Canada Canada

review of fleck 5600sxt

it came with service manual for 5810 and 5812, and no installation manual was able to assemble with only a little confusion being an engineer But i have not installed it yet. i find the service manual a little confusing it may clear up. but the programming options are not clear at this time. perhaps the 5600 and 5810 are similar. it would be nice if i had a guide for programming with 360-550 Mg/L or 21-32 G/gal hardness area i have experience installing the older mechanical models tks

21 June 2021
Dele U.
Canada Canada

Water softener and Filter

Excellent support.

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