Water Filtration Systems
water filtration systems — pre-owned
Browse 1,673 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
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.
You save $63.00

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.

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.

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.

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.
You save $30.00

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.
You save $50.00

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.

Waterboss 54550 Water Softener Controller Circuit Board 50 Series
Waterboss 54550 Water Softener Controller Circuit Board 50 Series. Guaranteed working and in excellent overall condition. See images of actual controller you will receive in this listing.

John Ellis Living Water Machine LWM- 5 Machine
Very clean with just a little corrosion(see pictures). Come with everything shown. It does heat up and the fan works. Electrical cords in good condition. No UV lights. Paper work provided may not be for this model but may be helpful.

Kinetico Water Softener K30 Control Valve K60 K100 Metered Head
As seen in pictures. Was removed from my personal K30 system at my house. Obviously had some leaks at some point, but since I owned it, it has never leaked. Would regen as it should, manual regen works too.

Waterboss 19043 Water Softener Drive Motor 12VAC 60Hz 4/3 RPM CW 3W

Delta DWQ1001012 Clarifi Under Sink 6-Stage Reverse Osmosis Filter System *
Delta DWQ1001012 Features ® Reverse Osmosis Beverage Faucet, available in a variety of styles and finishes, or can be plumbed to fridge water dispenser. FILTERED WATER MADE EASY: Pairs with a Delta.

GE Replacement Wall Mount Bracket for GXWH20S GXWH20F GXWH20T
free shipping you get what is in the picture
You save $0.65

Whirlpool water softener WHES30
Like New, Slightly used -The Whirlpool water softener WHES30 is a whole house system designed to provide soft water throughout your home. Made of durable plastic in a beige color, this model is compatible with the GE GXSHC40N 15" Smart Water Softener. With a capacity of 40,000 grains, this water filtration system is perfect for improving the taste and quality of your tap water, making it ideal for household use. Upgrade your plumbing fixtures with this slightly used Whirlpool water softener for a healthier and more convenient water supply.

Rettin MMP-7070T Water Ionizer White 2-Stage ACF Ceramic Filter Household
Rettin MMP-7070T Water Ionizer White 2-Stage ACF Ceramic Filter Household

Water Softener Control Head Unit With Bypass Valve For Parts Or Use
I don’t have the power cord for it but was a good working unit until it was updated

Used Kinetico Older Style Bypass. Great Working Condition.
This is a older Style water softener bypass. It came out of a model 60 water softener. It works as it should. comes with retaining clip to attach to softener along with pin and bottom clip. Currently has cpvc as the connecting tubes and removed pipes from in/outs. all o-rings, seals and cips are in tact. See pictures. also comes with 1/4" port tee. selling as is. No returns

Culligan Mark 100 Soft Minder Water Softener Parts Control Valve Body Housing
Culligan Mark 100 Soft Minder Water Softener Parts Valve Head Housing. Guaranteed solid replacement housing. No cracks or defects. Thoroughly cleaned and inspected. See images of actual part you will receive in this listing.

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 actual pawls you will receive. They are all in excellent condition and come with springs as shown. Free shipping.

Waterdrop G2P600 Reverse Osmosis System, 600 GPD RO Extra 1 WD-G2CF 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.
You save $58.00

Water Quality RO-132 Reverse Osmosis Under Sink Filter 4 gal Used
Water Quality RO-132 Reverse Osmosis Under Sink Filter 4 gal Used

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

Clack Water Softener (V3003-05)-C-Series WS1 Flow Meter Turbine Assembly
Clack Water Softener (V3003-05)-C-Series WS1 Flow Meter Turbine Assembly. Guaranteed working in excellent condition. See images of actual meter you will receive in this listing.

Rain Soft EC4 19748 Water Softener Controller Panel Control Circuit Board
Rain Soft EC4 19748 / 19512 Water Softener Conditioner Controller Panel Control Circuit Board. Nice used board in very good condition. Guaranteed working. See detailed images of actual controller you will receive in this listing. It will be essential to closely evaluate the board as well as the part number to ensure it is a suitable replacement.

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

Edenpure SR-1000 Scalerid Hard Water Treatment System New Read
Preowned but unused

Kinetico Regeneration Actuator screw fits Mach and k series heads NEW
You're buying 1 NEW Kinetico Actuator regeneration screw with new seal.

Rain Soft EC5 51927 Water Softener Controller Panel Control Circuit Board

Kinetico K5 Reverse Osmosis Drinking Station
Refurbished Kinetico K5 Reverse Osmosis Drinking Station Comes with Pre Carbon Filter and Post Carbon Filter

Portable RV Water Softener - On The Go - Single

Ecodyne Water Softener Control Board Model#GS6125D TESTED
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.

Culligan Gold Water Softener Circuit Board Tested and Working
PRICE IS FOR ONE BOARD. HAVE 2 FOR SALE. The Culligan Gold Water Softener Circuit Board is a tested and working component specifically designed for the Culligan Gold model water filtration system. This plastic circuit board, in the color of gold, comes as a single piece in the pack. It is compatible with the Culligan Gold model, ensuring a proper fit and function for your water softening needs. This product is an essential part of maintaining your home's water filtration system, providing reliable performance and filtration capabilities.

GE Appliance 7346431A, 15204C B1 DV, Control Board with Display, Water Softener
GE Appliance 7346431A, 15204C B1 DV, Control Board with Display, Water Softener. Power plug-in is not included

Culligan Gold Series Water Softener Parts 24V Drive Motor Assembly. 01004833
clean motor, what you see is what you get see my feedback

Culligan 01031620 HE 1.5 Down-flow High Efficiency Softener Gear Box Assembly
Culligan 01031620 HE High Efficiency Water Softener Parts Gear Box Assembly (Four bolt style not five bolt) 1.25 / 1.5 Down-flow. Excellent condition.

U.S. Water Matrixx Flexx Traxx Drop Bypass Valve Assembly Water Softener Parts
U.S. Water Matrixx, Flexx, Traxx, and Drop Bypass Valve Assembly Water Softener Parts. Fits Powerline Pro Kinetico and Spring Well softeners and Iron filters. Used but in very good condition.

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.

Kinetico Mach Style Bypass Control Valve Water Softener Parts
• I try to matchCURRENT cheaper price(I don’t match past prices). Location: 19T 1025 SOM 5202.
You save $12.75

North Star Water Softener Circuit Board Model# NSC40ED TESTED
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.

Culligan 01012834 Silver Series Water Softener Parts Circuit Cont
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.