Water Filtration Systems

water filtration systems — pre-owned

1,642listings

Browse 1,642 water filtration systems — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Waterdrop G3P800 Reverse Osmosis System, NSF/ANSI 42 & 53 & 58 & 372 Certified
Certified - RefurbishedBuy It NowBest Offer

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

Also certified to NSF/ANSI 372 for lead-free materials. Two holes required: one for the RO faucet and one for the drain pipe connection. ✅Certified Filtration Standards. ✨Sleek Tankless Design.

$699.00
Free ShippingCranbury, US
waterdropdirect
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99.6%Excellent· 33.7k
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Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System
Certified - RefurbishedBuy It NowBest Offer

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

Compared to the ordinary RO system, the Waterdrop RO system always has a stable water flow. This tankless RO has a low drain ratio of 1:1 and saves water waste by 300%. 𝐈𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞 𝐭𝐚𝐧𝐤𝐥𝐞𝐬𝐬 𝐝𝐞𝐬𝐢𝐠𝐧: The tankless design ensures the safety of your family’s drinking water.

$229.00
Free ShippingCranbury, US
waterdropdirect
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99.6%Excellent· 33.7k
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Enagic LeveLuk SD501 Kangen Water Filter Alkaline Ionizer 2 gal 7-Stage
UsedBuy It NowBest Offer

Enagic LeveLuk SD501 Kangen Water Filter Alkaline Ionizer 2 gal 7-Stage

Selling our Enagic LeveLuk SD501 water ionizer, purchased around 2016. This premium countertop system is in good working condition and has been well cared for. Features:• 7 platinum-coated titanium plates• Produces multiple water settings (alkaline, neutral, acidic, and cleaning water options)• Large LCD display with voice prompts• Automatic cleaning system• Compact countertop design• Includes attached hoses/accessories shown in photos A high-end water ionization and filtration system that originally sold for several thousand dollars. Great opportunity to purchase a quality unit at a fraction of the original cost.

$741.00
See listingOak Harbor, US
atz123
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100.0%Excellent· 588
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460TC Water Softener Control Head
UsedBuy It NowBest Offer

460TC Water Softener Control Head

Complete 460TC water softener control head. It has a manual regeneration dial with settings for brine/slow rinse, fast rinse/refill, backwash, and conditioned water. Was working good before I took it off and changed water softner systems. You may want to rebuild and replace and seals before installing again.

$155.00
See listingPalm Bay, US
brandonstellmach95
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100.0%Excellent· 108
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Silver Bullet Water Treatment - Water Treatment Unit Model CT100
For parts or not workingBuy It NowBest Offer

Silver Bullet Water Treatment - Water Treatment Unit Model CT100

Silver Bullet Water Treatment - Water Treatment Unit Model CT100 I was told it was never used but I have not tested it my self! Listed as for parts not working incase it does not work! I have not tested it! Sold as is!

$999.99
See listingNiles, US
danwil_4897
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100.0%Excellent· 382
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John Ellis Water Machine LWM Water Wizard #710 Distiller Electron Works Great
UsedBuy It NowBest Offer

John Ellis Water Machine LWM Water Wizard #710 Distiller Electron Works Great

Working great. Barely used. Comes with everything you need to start producing John Ellis distiller water. See pictures for full detail. Free shipping.

$1499.00
Free ShippingHyannis, US
magnacartalabs
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100.0%Excellent· 978
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Waterdrop G2P600 Reverse Osmosis System, 600 GPD, 7 Stage Tankless Water Filter
Certified - RefurbishedBuy It NowBest Offer

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

The G2P600 reverse osmosis system provides instant filtration and hydration without the wait. The G2P600 RO water filter features a tankless design, saving 70% of under-sink space. This is ideal for modern kitchens.

$299.00
Free ShippingOntario, US
waterdropdirect
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99.6%Excellent· 33.7k
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Fully Reconditioned Autotrol 255 Water Softener Control Valve
UsedBuy It NowBest Offer

Fully Reconditioned Autotrol 255 Water Softener Control Valve

O rings, nuts and bolts to use to bolt on either an Autotrol bypass valve or an Autotrol back-plate. Fully Reconditioned Autotrol 255 Standard Valves. 13/16" or 1" distributor pilot. Valve cover.

$155.00
+$20.00Villa Park, US
jcwaterinc
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100.0%Excellent· 539
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Kinetico Level 1 Cap Cover complete
UsedBuy It NowBest Offer

Kinetico Level 1 Cap Cover complete

(Kinetico Level 1 Cap Cover complete W/ Cap, o-rings, 8) mounting screws Regeneration Screws and spring.

$119.95
+$5.95Allendale, US
jjlrrw
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100.0%Excellent· 889
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Kinetico Level 1 Valve Head Top Cap Cover With Regeneration Screw Water Softener
UsedBuy It Now

Kinetico Level 1 Valve Head Top Cap Cover With Regeneration Screw Water Softener

Kinetico Level 1 Valve Head Cap Cover With Regeneration Screw Water Softener. See images of parts you will receive in this listing.

$149.95
+$8.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Kinetico S250 Mach Series Top Cover Cap w/Gasket, Pawls, Discs, and Screws
UsedBuy It Now

Kinetico S250 Mach Series Top Cover Cap w/Gasket, Pawls, Discs, and Screws

Kinetico S250 Mach Series Top Cover Cap w/Gasket, Pawls, Discs, and Screws. All upper assembly components as shown including top cover, gasket, screws, pawls, o-ring, spring, and control discs. See images of actual parts you will receive. These components are in very good condition.

$219.95
+$8.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Kinetico Level 1 for 4040SOD Mach series W/ Turbines, Gears, and Gasket
UsedBuy It NowBest Offer

Kinetico Level 1 for 4040SOD Mach series W/ Turbines, Gears, and Gasket

Kinetico Level 1 w/ Gasket For Mach 4040SOD and other Mach models. Water Softener in very good condition see pictures of actual part.

$189.99
+$9.95Allendale, US
jjlrrw
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100.0%Excellent· 889
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OEM Kinetico Pawl Kit Models Mach & "K" Series 30/50/60/100 Complete Set
UsedBuy It Now

OEM Kinetico Pawl Kit Models Mach & "K" Series 30/50/60/100 Complete Set

Genuine OEM Kinetico Pawl Kit Models 30/50/60/100 Complete Set. See images of pawls you will receive. They are all in excellent condition and come with springs as shown.

$49.95
+$5.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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EcoWater 3000 Series Water Softener 24v Motor.
UsedBuy It Now

EcoWater 3000 Series Water Softener 24v Motor.

EcoWater 3000 Series Water Softener 24v Motor.

$129.95
See listingElkhart, US
rattletraps
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99.6%Excellent· 2.4k
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Culligan 01030201 Gold Series Water Softener Parts 24V Drive Motor
UsedBuy It Now

Culligan 01030201 Gold Series Water Softener Parts 24V Drive Motor

01030201 Culligan S-10009 Rev A / E00000002550 Gold Series / Aquasential / Medallist "Newest Version" Water Softener Parts ***24-29VAC*** Drive Motor Assembly. See images of actual part you will receive in this listing. Compare at $429.02 online.

$259.95
+$8.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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EcoWater 3000 Series Water Softener 24v Motor.
UsedBuy It Now

EcoWater 3000 Series Water Softener 24v Motor.

EcoWater 3000 Series Water Softener 24v Motor.

$129.95
See listingElkhart, US
rattletraps
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99.6%Excellent· 2.4k
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John Ellis Living Water Machine LWM Electron 5 Machine & Transformer
UsedBuy It NowBest Offer

John Ellis Living Water Machine LWM Electron 5 Machine & Transformer

The John Ellis Living Water Machine LWM Electron 5 Machine & Transformer is a water filtration system designed for commercial and household use. This gray-colored machine has a 3L capacity and features a 2-stage distillation filtration method. Made of steel and weighing 5 lbs, it is suitable for both commercial and household settings. This unique product is designed by John Ellis Water Machine and is compatible with their specific model, the LWM-5. Made in the United States, this water filtration system provides clean and safe drinking water for various needs

$1600.00
See listingSilverdale, US
matzims*closet
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100.0%Excellent· 6
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Kinetico Water Softener level 1 Control Disc Water Softener
UsedBuy It NowBest Offer

Kinetico Water Softener level 1 Control Disc Water Softener

$29.95
+$5.95Allendale, US
jjlrrw
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100.0%Excellent· 889
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Kinetico Level 6 Base w/strainer & O-Rings rings.
UsedBuy It NowBest Offer

Kinetico Level 6 Base w/strainer & O-Rings rings.

Kinetico 60 series Main Level 6 Base with strainer, O-ring gasket, O-ring to tank seal and internal O-ring to pickup tube. Very good condition see pictures of actual item you will receive. This base unit accepts the check balls NOT the yellow check towers. Used in very good condition I try and ship the same day or next day but if sales are near the weekend it could take a day or two longer, the reason for the listing being 3 day shipping.

$129.95
+$7.95Allendale, US
jjlrrw
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100.0%Excellent· 889
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Culligan 01016452 Circuit Control Board Medallist Water Softener Parts
UsedBuy It Now

Culligan 01016452 Circuit Control Board Medallist Water Softener Parts

Culligan 01016452 Circuit Control Board Medallist Softener. Guaranteed working control. See images of actual board you will receive in this listing. Please make sure that it is identical to the one you are replacing to ensure fitment.

$179.95
+$8.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Kinetico Level 4 Control Valve Piston Cone Water Conditioner Softener Parts
UsedBuy It Now

Kinetico Level 4 Control Valve Piston Cone Water Conditioner Softener Parts

Kinetico Level 4 Valve Piston Cone Water Conditioner Softener Parts "K" 30/50/60/100 and Mach Series. Removed from late model Mach Series control valve. See images of level you will receive in this listing. Listing is for one valve complete as shown. Excellent condition.

$39.95
+$5.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Luminor LB5-03-12V Blackcomb UVC Water Purifier  3 GPM  1/2" Inlet/Outlet  12VDC
-20%
UsedBuy It NowBest Offer

Luminor LB5-03-12V Blackcomb UVC Water Purifier 3 GPM 1/2" Inlet/Outlet 12VDC

This system features integral lamp life monitoring, axial flow, 304 stainless steal polished reactors with flow rates stated at 95% UVT at a dose of 30mJ/cm² all while running on a 12 volt current. LUMINOR is the "one-stop" solution for all your disinfection needs!

$132.00$165.00-20%

You save $33.00

+$18.00Kissimmee, US
centralfloridatreasures
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99.3%Excellent· 2.5k
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John Ellis Living Water Machine older model works Untested with H2O Read Descrpt
UsedBuy It Now

John Ellis Living Water Machine older model works Untested with H2O Read Descrpt

This is an older model John Ellis water machine. Has no UV light holes or lights. This item is sold as is, for parts, repair and cleaning. Your monitor may show a slight variation from mine. Otherwise, an unpaid case will be opened and item will be relisted.

$699.99
See listingScottsdale, US
catmurphy26
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99.8%Excellent· 5.4k
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Kinetico meter disc  available 1-3-4-5-6-7-
UsedBuy It Now

Kinetico meter disc available 1-3-4-5-6-7-

Kinetico meter disc.I have all the numbers except #2 and #8 available. Just indicate the number you need and how many. fits all kinetico models K and Mach systems.

$20.00
+$4.95Sterling, US
ella-2480
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100.0%Excellent· 100
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Kinetico Water Softener Main Level 1 Cap 50 series w/ gears & connections
UsedBuy It NowBest Offer

Kinetico Water Softener Main Level 1 Cap 50 series w/ gears & connections

Kinetico Water Softener Main Level 1 Cap 50 series w/ gears & connections

$360.00
+$13.98Enterprise, US
xqpx121
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99.0%Excellent· 107
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Amway E-84 Water Filtration System Housing E-86 Faucet Kit Used No Filter
UsedBuy It Now

Amway E-84 Water Filtration System Housing E-86 Faucet Kit Used No Filter

$199.99
See listingPleasant Mount, US
eleflip
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99.6%Excellent· 698
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Culligan Mark 89 Estate 2 Mechanical Clock 600B120 Timer Timing Device Assembly
UsedBuy It Now

Culligan Mark 89 Estate 2 Mechanical Clock 600B120 Timer Timing Device Assembly

Culligan 600B120 Mark 89 / Estate 2 Mechanical Clock Timer Timing Device Assembly. Tested and guaranteed working timer. Very nice timing device in exceptional condition. This timer is easily among the nicest we have ever offered. See detailed images of actual timing device you will receive in this listing.

$239.95
+$10.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Culligan Water Softener Bypass Valve
UsedBuy It Now

Culligan Water Softener Bypass Valve

Selling a Culligan water softener bypass valve. The male threads measure 1 1/2" outer diameter. Please check your measurement for fit. Was working fine when removed from our system. We switched to a different water softener brand and no longer need. Locking pins included.

$74.95
+$9.95Nashville, US
luvsmopars
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100.0%Excellent· 313
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Culligan 01018684 Gold Series Water Softener Circuit Control Board
TOP
UsedBuy It NowBest Offer

Culligan 01018684 Gold Series Water Softener Circuit Control Board

This part was removed and inspected by HVAC installer from a fully functioning system. Old system was replaced with newer one (more energy efficient) and was in good working condition. This part was in good working condition when removed. Please check images carefully because you will receive exactly the part as pictured, or a very similar one. Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. There is no warranty on used parts.If you don’t have skills or knowledge, you must ask certified HVAC technician to install. I am not liable for any damages or failures as a result of improper installation.

$225.00
Free ShippingRochester, US
otis7272TOP
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100.0%Excellent· 561
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GE Profile PXRQ400T Tankless Reverse Osmosis Filtration System w/ Faucet
UsedBuy It NowBest Offer

GE Profile PXRQ400T Tankless Reverse Osmosis Filtration System w/ Faucet

Compact tankless design - uses less undercounter space with no external storage tankreverse osmosis systems. Dedicated designer faucet - allows you to choose between filtered and unfiltered water directly from the tap.

$249.99
Free ShippingGilbert, US
valleyd65
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99.4%Excellent· 1.8k
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KANGEN LeveLuk SD501 Water Ionizer Machine with LCD Display
UsedBuy It NowBest Offer

KANGEN LeveLuk SD501 Water Ionizer Machine with LCD Display

Does need new hose as seen in photos. Local pickup is not only OK it is encouraged.

$650.00
+$19.00Canby, US
97013mike
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100.0%Excellent· 1.0k
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600GPD MIZUDO 8-Stage Tankless Reverse Osmosis Water Under Sink Filter Quiet
-20%
UsedBuy It NowBest Offer

600GPD MIZUDO 8-Stage Tankless Reverse Osmosis Water Under Sink Filter Quiet

ModelPureflo 600GPD. 3:1 RO Filtration System Under Sink, Leak-Free, Quiet, Reduce PFAS&Fluoride. 【Smart Life Indicator 】No more guessing about when to change! just push, pull, and twist in 3 seconds, all without moving the unit.

$159.99$199.99-20%

You save $40.00

Free ShippingElkhart, US
fogatti_rv_appliances_store
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99.4%Excellent· 890
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Culligan 01004556 Mark 100 Circuit Control Board Timer Controller
UsedBuy It Now

Culligan 01004556 Mark 100 Circuit Control Board Timer Controller

Culligan 01004556 Circuit Control Board Timer Controller. Guaranteed working control in excellent condition. It will be essential to closely inspect the board to ensure it is identical to the one you are replacing. If this board varies in any way, it is likely not a suitable replacement. These boards are becoming very difficult to find in this condition. Guaranteed working board in very good condition. See images of actual control you will receive.

$189.95
+$9.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Waterdrop G2P600 Reverse Osmosis System, 600 GPD, 7 Stage Tankless Water Filter
Certified - RefurbishedBuy It NowBest Offer

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

The G2P600 reverse osmosis system provides instant filtration and hydration without the wait. The G2P600 RO water filter features a tankless design, saving 70% of under-sink space. This is ideal for modern kitchens.

$299.99
Free ShippingOntario, US
waterdropdirect
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99.6%Excellent· 33.7k
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Culligan Water Softener Copper Plumbing Connectors With Seals and Nuts.
UsedBuy It Now

Culligan Water Softener Copper Plumbing Connectors With Seals and Nuts.

Culligan Water Softener Copper Plumbing Connectors With Seals and Nuts. These are cut shorter than normal, but there’s still enough room to solder an adapter on the end or possibly a quick connect fitting. It came from a Culligan Gold series but would also work on a Medallist. The copper is 3/4”.

$24.95
See listingElkhart, US
rattletraps
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99.6%Excellent· 2.4k
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Kinetico 2060s Mach Series Level 1 With Turbines Gear Stacks and Gasket
UsedBuy It Now

Kinetico 2060s Mach Series Level 1 With Turbines Gear Stacks and Gasket

Kinetico 2060s Mach Series Level 1 with Turbines, Gear Stacks, and Gasket. See images of level one and corresponding gasket as shown. We can likely provide any additional parts needed to restore your 2060s or other Kinetico control valves.

$239.95
+$8.95Marshfield, US
softening-solutions
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99.9%Excellent· 3.2k
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Fleck Water Softener Control Head
UsedBuy It Now

Fleck Water Softener Control Head

This auction is for a Fleck Water Softener Control Head that I purchased at an estate. I was told that it was in working condition when it was removed from service. I don't know the model number, but feel free to message questions, I will try to answer best I can. Good luck bidding.

$199.95
+$26.95Vernon Rockville, US
ajl958
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99.7%Excellent· 15.0k
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Waterdrop CoreRO Countertop Reverse Osmosis System 6-Stage RO Filtration WD-C1S
-30%
UsedBuy It NowBest Offer

Waterdrop CoreRO Countertop Reverse Osmosis System 6-Stage RO Filtration WD-C1S

In excellent condition, lightly used Does not come with filter

$77.00$110.00-30%

You save $33.00

+$19.99Phoenix, US
solofindz
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99.7%Excellent· 2.0k
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Culligan 01016452 Control Board Medallist Plus Series Water Softener TESTED
UsedBuy It NowBest Offer

Culligan 01016452 Control Board Medallist Plus Series Water Softener TESTED

This part was removed and inspected by installer from a fully functioning system. Old system was replaced with newer one (more energy efficient) and was in good working condition. This part was in good working condition when removed. Please check images carefully because you will receive exactly the part as pictured, or a very similar one. Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. There is no warranty on used parts.If you don’t have skills or knowledge, you must ask certified technician to install. I am not liable for any damages or failures as a result of improper installation.

$125.00
Free ShippingRochester, US
otis7272
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100.0%Excellent· 561
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Fleck Timer Circuit Board                                P/N:BR42941U Revision K
UsedBuy It NowBest Offer

Fleck Timer Circuit Board P/N:BR42941U Revision K

This part was removed and inspected by HVAC installer from a fully functioning system. Old system was replaced with newer one (more energy efficient) and was in good working condition. This part was in good working condition when removed. Please check images carefully because you will receive exactly the part as pictured, or a very similar one. Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. There is no warranty on used parts.If you don’t have skills or knowledge, you must ask certified HVAC technician to install. I am not liable for any damages or failures as a result of improper installation.

$150.00
Free ShippingRochester, US
otis7272
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100.0%Excellent· 561
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