Water Filtration Systems

water filtration systems — pre-owned

1,597listings

Browse 1,597 water filtration systems — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Waterdrop G2P600 Reverse Osmosis System, 600 GPD, 7 Stage Tankless Water Filter
-33%
CERTIFIED - REFURBISHED

Waterdrop G2P600 Reverse Osmosis System, 600 GPD, 7 Stage Tankless Water Filter

$199.00
Waterdrop G3P800 Reverse Osmosis System, NSF/ANSI 42 & 53 & 58 & 372 Certified
-20%
CERTIFIED - REFURBISHED

Waterdrop G3P800 Reverse Osmosis System, NSF/ANSI 42 & 53 & 58 & 372 Certified

$559.00
Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System
-26%
CERTIFIED - REFURBISHED

Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System

$168.60
5 Stage Reverse Osmosis RO Drinking Water System + Steel Water Tank
USED

5 Stage Reverse Osmosis RO Drinking Water System + Steel Water Tank

$87.99
Culligan 01012905 Medallist Plus Softener Flow Meter Turbine
USED

Culligan 01012905 Medallist Plus Softener Flow Meter Turbine

$109.95
iSpring ED2000 Whole House Electronic Descaler Water Conditioner
USED

iSpring ED2000 Whole House Electronic Descaler Water Conditioner

$50.00
Fully Reconditioned Autotrol 255 Water Softener Control Valve
USED

Fully Reconditioned Autotrol 255 Water Softener Control Valve

$155.00
Waterdrop D6 Reverse Osmosis Water Filter, Extra WD-D6RF Replacement filter
-25%
CERTIFIED - REFURBISHED

Waterdrop D6 Reverse Osmosis Water Filter, Extra WD-D6RF Replacement filter

$269.00
LeveLuk SD501 TYH-401 Electrolysis Water System Enagmic AS IS REPAIR UNTESTED
FOR PARTS OR NOT WORKING

LeveLuk SD501 TYH-401 Electrolysis Water System Enagmic AS IS REPAIR UNTESTED

$139.99
Morton Rheem Whirlpool GE Softener Electronic Control Board  WS21X10049  7274155
USED

Morton Rheem Whirlpool GE Softener Electronic Control Board WS21X10049 7274155

$125.00
Kinetico 2030s Water Softener Head
USED

Kinetico 2030s Water Softener Head

$350.00
YARNA Capacitive Electronic Water Descaler Whole House Solution CWD30
USED

YARNA Capacitive Electronic Water Descaler Whole House Solution CWD30

$99.00
Autotrol 155/255 Bypass Valve A/1040769
USED

Autotrol 155/255 Bypass Valve A/1040769

$50.00
Waterboss Controller
USED

Waterboss Controller

$85.00
Hose Kit.  Countertop RO BESTWATER Unit, By Shaklee
USED

Hose Kit. Countertop RO BESTWATER Unit, By Shaklee

$35.00
Fully Reconditioned Autotrol 255 Water Softener Control Valve
USED

Fully Reconditioned Autotrol 255 Water Softener Control Valve

$175.00
Kinetico Mach Style Bypass Control Valve Water Softener Parts
-14%
USED

Kinetico Mach Style Bypass Control Valve Water Softener Parts

$64.50
GE / Whirlpool / Rheem / Kenmore  7370286  Water Softener By-pass Valve
-40%
USED

GE / Whirlpool / Rheem / Kenmore 7370286 Water Softener By-pass Valve

$41.40
Kinetico Water Softener Meter Disc Different Sizes Available Have 1, 4, 5, 6, 7
USED

Kinetico Water Softener Meter Disc Different Sizes Available Have 1, 4, 5, 6, 7

$29.99
Springwell SS4 Softener Head
FOR PARTS OR NOT WORKING

Springwell SS4 Softener Head

$50.00
Waterdrop G2P600 Reverse Osmosis System, 600 GPD RO Extra 1 WD-G2CF Filter
-31%
CERTIFIED - REFURBISHED

Waterdrop G2P600 Reverse Osmosis System, 600 GPD RO Extra 1 WD-G2CF Filter

$219.00
Kinetico Level 4 Control Valve Piston Cone Water Conditioner Softener Parts
USED

Kinetico Level 4 Control Valve Piston Cone Water Conditioner Softener Parts

$39.95
Kinetico Mach Style Bypass Valve Water Softener Inline  Filter Install Hook Up
USED

Kinetico Mach Style Bypass Valve Water Softener Inline Filter Install Hook Up

$60.00
Kinetico Pawl Kit Models 30/50/60/100 Entire Set
USED

Kinetico Pawl Kit Models 30/50/60/100 Entire Set

$47.99
Used 1289 Softner Head With Remote Tank Base For Parts
FOR PARTS OR NOT WORKING

Used 1289 Softner Head With Remote Tank Base For Parts

$65.00
Culligan Gold Series Brine Salt Tank Valve .45 Gpm Fitting Water Softener Parts
USED

Culligan Gold Series Brine Salt Tank Valve .45 Gpm Fitting Water Softener Parts

$49.95
Kinetico Water Softener Parts Black Plastic Brine Connector Elbow Fitting
USED

Kinetico Water Softener Parts Black Plastic Brine Connector Elbow Fitting

$19.95
Fully Reconditioned Autotrol 255 Water Softener Metered Control Valve
USED

Fully Reconditioned Autotrol 255 Water Softener Metered Control Valve

$230.00
Living Water Vollara Model W1009A Water Ionization Filtration
USED

Living Water Vollara Model W1009A Water Ionization Filtration

$500.00
Eastek Timer Circuit Board BR42196/ BR 42195 Version C ( VER 0.3 ) FLECK CONTROL
-32%
USED

Eastek Timer Circuit Board BR42196/ BR 42195 Version C ( VER 0.3 ) FLECK CONTROL

$99.87
Fleck Timer Circuit Board !!ONLY!! 5800SXT /44059 For Water Softener---Free Ship
USED

Fleck Timer Circuit Board !!ONLY!! 5800SXT /44059 For Water Softener---Free Ship

$150.00
Aquasana Clean Water Machine Countertop Water Filter Plastic Black Gray
USED

Aquasana Clean Water Machine Countertop Water Filter Plastic Black Gray

$55.00
Kinetico Water Softener Meter Disc 3
USED

Kinetico Water Softener Meter Disc 3

$34.95
Culligan Medallist Water Softener Parts Repair Kit
USED

Culligan Medallist Water Softener Parts Repair Kit

$179.95
 Rheem RHS32 Water Softener Control Valve     P/N: 7338721  ! NOT COMPLETE !
-40%
FOR PARTS OR NOT WORKING

Rheem RHS32 Water Softener Control Valve P/N: 7338721 ! NOT COMPLETE !

$45.00
Autotrol 168 / 255 / 155 Old Style 460 Timer Water Softener Parts
USED

Autotrol 168 / 255 / 155 Old Style 460 Timer Water Softener Parts

$119.95
Culligan 01013033 Water Softener Seal Pack Rebuild Kit
USED

Culligan 01013033 Water Softener Seal Pack Rebuild Kit

$149.99
Autotrol 1033067 Top Plate 155 / 255 / 440 or 460 series includes springs
USED

Autotrol 1033067 Top Plate 155 / 255 / 440 or 460 series includes springs

$39.95
SimPure Y9A Countertop RO Pure Water Filter System 6-Stage Alkaline - USED
USED

SimPure Y9A Countertop RO Pure Water Filter System 6-Stage Alkaline - USED

$119.95
GE Water Softener Circuit Board 7274155A /7275884B.1 TESTED
USED

GE Water Softener Circuit Board 7274155A /7275884B.1 TESTED

$115.00