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Shop All Water Filters, Parts & Systems

Fresh, dependable water starts with the right setup, and iFilters makes it easy to find what fits your space. Water Filters, Parts & Systems in this collection cover everyday drinking needs, whole-home protection, and jobsite-ready solutions for commercial and industrial use. Browse by product type, filter size, or compatibility so replacements and upgrades stay simple. Options span sediment, carbon, reverse osmosis, and UV, giving you a clear path from problem to solution. Fast shipping and helpful support keep your project moving.

About iFilters Water Filtration Products

iFilters brings a one-stop catalog together, from complete whole-house filtration systems to specialized drinking water systems for sinks and dispensers. Commercial systems help support higher flow demands, while replacement filters keep performance consistent between service intervals. Parts like housings, fittings, adapters, and power supplies help you maintain, repair, or expand an existing setup without guesswork. Ultraviolet systems add an extra layer for applications that benefit from UV treatment. Tools and specialty systems round out the collection for unique installs, seasonal needs, and niche use cases.

Why Choose iFilters for Water Filtration Gear?

Confidence comes from selection, and this store is built around breadth and compatibility across many brands and applications. Auto Ship subscriptions make routine replacements easier, while discounts help reduce long-term ownership costs. Expert support is available when you need help choosing the right part, matching a cartridge, or planning a system refresh. Free shipping starts at qualifying order thresholds, and a satisfaction guarantee adds peace of mind at checkout.

Shop water filtration systems and parts online today!

Filters

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Booster Pump Kit for Reverse Osmosis RO DI Systems Up To 100 GPD, 1/4" QC Ports - IFilters
Booster Pump Kit for Reverse Osmosis RO DI Systems Up To 100 GPD, 1/4" QC Ports - IFilters
Hydronix

Booster Pump Kit for Reverse Osmosis RO DI Systems Up To 100 GPD, 1/4" QC Ports

BP100KIT
in stock

$95.81 - $95.81
$95.81
$95.81 - $95.81
$95.81

iFilters has combined top quality components to create the best RO DI booster pump in the market. The BP100KIT includes all the components needed t...

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$95.81 - $95.81
$95.81
$95.81 - $95.81
$95.81
Auto Ship
Whole House, Well Sediment String Wound Water Filter 5 micron 10"
Hydronix

Whole House, Well Sediment String Wound Water Filter 5 micron 10"

SWC-45-1005
in stock

$17.50 - $17.50
$17.50
$17.50 - $17.50
$17.50

The Hydronix SWC-45-1005 polypropylene String wound filters have a particle retention Size of 5 micron and are used in a residential and commercial...

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$17.50 - $17.50
$17.50
$17.50 - $17.50
$17.50
Auto Ship
Hydronix Coconut Carbon Block Water Filter 4.5" x 20" - 0.5 Micron - SMCB-4520
Hydronix

Hydronix Coconut Carbon Block Water Filter 4.5" x 20" - 0.5 Micron - SMCB-4520

SMCB-4520
in stock

$59.95 - $59.95
$59.95
$59.95 - $59.95
$59.95

Hydronix SMCB-4520 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. SMCB-4520 filters have a particle re...

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$59.95 - $59.95
$59.95
$59.95 - $59.95
$59.95
Pressure Regulator Protection Valve for RO & Filter Systems, 3/8" QC, 70 PSI - IFilters
Shok Blok

Pressure Regulator Protection Valve for RO & Filter Systems, 3/8" QC, 70 PSI

SB-FPV-70/38
in stock

$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99

Shokblok Filter protection valves are designed for high pressure installations to protect reverse Osmosis systems, water filtration systems, ice ma...

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$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99
Auto Ship
Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 5 μm
Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 5 μm - IFilters
Hydronix

Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 5 μm

SWC-25-1005
in stock

$7.00 - $7.00
$7.00
$7.00 - $7.00
$7.00

Hydronix SWC-25-1005 polypropylene String wound filters have a particle retention Size of 5 micron and are used in a residential and commercial wat...

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$7.00 - $7.00
$7.00
$7.00 - $7.00
$7.00
3/8" OD Natural Polyethylene Tubing - 500 Ft - IFilters
Hydrofit

3/8" OD Natural Polyethylene Tubing - 500 Ft

PT06-NA-0500
in stock

$77.00 - $77.00
$77.00
$77.00 - $77.00
$77.00

The PT06-NA-0500 Natural Polyethylene tubing is manufactured from top quality, low density materials. The PT06-NA-0500 is ideal for a variety of us...

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$77.00 - $77.00
$77.00
$77.00 - $77.00
$77.00
Harmony Series | 48,000 (48k) Grains Water Softener | 3-4 Bathrooms | Up to 5 People - IFilters
Aquasure Harmony Series 48,000 Grains Whole House Water Softener (AS-HS48D)
Aquasure

Harmony Series | 48,000 (48k) Grains Water Softener | 3-4 Bathrooms | Up to 5 People

AS-HS48D
in stock

$599.99 - $599.99
$599.99
$599.99 - $599.99
$599.99

Harmony Series 48,000 Grains Whole House Water Softener (AS-HS48D) Premium Whole Home Water Softening System | 5-Year Warranty | Advanced Digital M...

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$599.99 - $599.99
$599.99
$599.99 - $599.99
$599.99
Auto Ship
Hydron TW-1812-75 TFC DI Reverse Osmosis Membrane 75 GPD, Fits Standard RO Unit - IFilters
Hydron TW-1812-75 TFC DI Reverse Osmosis Membrane 75 GPD, Fits Standard RO Unit - IFilters
Hydron

Hydron TW-1812-75 TFC DI Reverse Osmosis Membrane 75 GPD, Fits Standard RO Unit

TW-1812-75D
in stock

$19.43 - $19.43
$19.43
$19.43 - $19.43
$19.43

The Hydron TW-1812-75 Reverse Osmosis membrane produces 75 gallon per day and is designed for home drinking water, DI systems, office and certain L...

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$19.43 - $19.43
$19.43
$19.43 - $19.43
$19.43
U300 Premium Drinking Water Filtration System 3 Stage & Designer Faucet - IFilters
iFilters

U300 Premium Drinking Water Filtration System 3 Stage & Designer Faucet

U300
in stock

$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00

The iFilters U300 was designed in California from NSF approved components and offers superior filtration at a lower cost compared to the leading co...

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$149.00 - $149.00
$149.00
$149.00 - $149.00
$149.00
SPV-40CAP12 End Cap for Hydronix SPV-4040-12 RO Vessel, 1pc - IFilters
Hydronix

SPV-40CAP12 End Cap for Hydronix SPV-4040-12 RO Vessel, 1pc

SPV-40CAP12
in stock

$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99

Hydronix End Cap for Hydronix SPV-4040-12, 4" with 1/2" Ports, Black. This Hydronix end cap is made from Glass Reinforced Polyamide O-rings preinst...

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$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99
UV Drinking Water Filtration Purifier System 4 Stage Filter & Sterilize USA Made
iFilters

UV Drinking Water Filtration Purifier System 4 Stage Filter & Sterilize USA Made

U300UV
in stock

$174.95 - $174.95
$174.95
$174.95 - $174.95
$174.95

The iFilters U300UV was designed and assembled in California from NSF-approved components and offers superior filtration at a lower cost compared t...

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$174.95 - $174.95
$174.95
$174.95 - $174.95
$174.95
2 Pack 1/4" Quick Connect x 1/4" NPT Fittings, Reverse Osmosis Filter Systems - IFilters
iFilters

2 Pack 1/4" Quick Connect x 1/4" NPT Fittings, Reverse Osmosis Filter Systems

MC0404/2
in stock

$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99

These 1/4" Tube x 1/4" NPT fittings are designed for ease of use. One end has threads and the other converts to Quick Connect to convert any port t...

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$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99
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CB5-4520 Whole House Carbon Block Water Filter, 5 Micron 4.5"x20" - IFilters
iFilters

CB5-4520 Whole House Carbon Block Water Filter, 5 Micron 4.5"x20"

CB5-4520
in stock

$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99

The CB5-4520 carbon block whole house filters have a particle retention Size of 5 microns. Perfect for Drinking water filtration as well as Whole H...

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$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
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Pre & Post Reverse Osmosis Water Filter Replacement Set Fits GE FX12P GXRM10RBL - IFilters
Smart Pack

Smart Pack 1 & 5 Micron Carbon Block Under-Sink Replacement Set | Pre & Post RO Filters

IF2-CB1-DRO
in stock

$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99

The Smart Pack Pre & Post Carbon Block RO Replacement Set is built to keep your reverse osmosis system doing what it does best: providing clean...

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$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99
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5 Stage RO Reverse Osmosis Water Filter Replacement NSF 14 filters 1-2 yr supply - IFilters
5 Stage RO Reverse Osmosis Water Filter Replacement NSF 14 filters 1-2 yr supply
Hydronix

5 Stage RO Reverse Osmosis Water Filter Replacement NSF 14 filters 1-2 yr supply

RO-14PK
in stock

$54.50 - $54.50
$54.50
$54.50 - $54.50
$54.50

1 - 2 Year (14 filters) supply of RO Reverse Osmosis Filters. All filters are Premium NSF Certified Hydronix. This universal set s compatible with ...

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$54.50 - $54.50
$54.50
$54.50 - $54.50
$54.50
Auto Ship
KDF85-20B 20" Iron, Hydrogen Sulfide, Sulfur, and Scale Well Water Filter - IFilters
iFilters

KDF85-20B 20" Iron, Hydrogen Sulfide, Sulfur, and Scale Well Water Filter

KDF85-20B
in stock

$89.99 - $89.99
$89.99
$89.99 - $89.99
$89.99

KDF85-20B 4.5" x 20" Coconut GAC + KDF85 Big Blue size cartridge. For Well Water or City Whole House filtration as well as Commercial use. This fil...

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$89.99 - $89.99
$89.99
$89.99 - $89.99
$89.99
Whole House Sediment & Rust Complete Filtration System with Clear Housing 20" - 1" Ports - IFilters
Whole House Sediment & Rust Complete Filtration System with Clear Housing 20" - 1" Ports - IFilters
iFilters

Whole House Sediment & Rust Complete Filtration System with Clear Housing 20" - 1" Ports

MWHSD20
in stock

$139.99 - $139.99
$139.99
$139.99 - $139.99
$139.99

The iFilters MWHSD20 20" Clear Heavy Duty Whole House Water Filter System comes complete with a 5 micron high capacity string wound sediment filter...

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$139.99 - $139.99
$139.99
$139.99 - $139.99
$139.99
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Watts 7-PK RO Filters Premier 500024 Compatible 1 year 5 Stage Replacements
iFilters

Watts Premier Compatible 7-Pack 5-Stage RO Replacement Filters – Sediment & Carbon Block Set, 10″ Cartridges, 1-Year Supply – Compatible with Standard Under-Sink Reverse Osmosis Systems

WATTS7
in stock

$35.94 - $35.94
$35.94
$35.94 - $35.94
$35.94

Your drinking water deserves precision filtration that you can trust. The Watts Premier Compatible 7-Pack 5-Stage RO Replacement Filter Kit provide...

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$35.94 - $35.94
$35.94
$35.94 - $35.94
$35.94
iFilters - RO-5100 - 100 GPD Ultimate Reverse Osmosis Filtration System 5 Stage, Chrome Faucet, 4 Gal - IFilters
iFilters

iFilters - RO-5100 - 100 GPD Ultimate Reverse Osmosis Filtration System 5 Stage, Chrome Faucet, 4 Gal

RO-5100-T4
in stock

$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99

Designed to filter 99% of contaminants and provide 100 GPD of safe clean water, iFilters has introduced the best RO system in the market at a great...

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$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99
Auto Ship
Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 75 GPD Membrane - IFilters
Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 75 GPD Membrane - IFilters
Smart Pack

Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 75 GPD Membrane

RO-75KIT4
in stock

$37.16 - $37.16
$37.16
$37.16 - $37.16
$37.16

4 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 75 GPD Membrane. For any standard 4 Stage RO system. Sediment, CTO Carbon Block, M...

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$37.16 - $37.16
$37.16
$37.16 - $37.16
$37.16
Booster Pump Kit for Reverse Osmosis RO DI Systems Up To 50 GPD, 1/4" QC Ports - IFilters
Booster Pump Kit for Reverse Osmosis RO DI Systems Up To 50 GPD, 1/4" QC Ports - IFilters
Hydronix

Booster Pump Kit for Reverse Osmosis RO DI Systems Up To 50 GPD, 1/4" QC Ports

BP50KIT
in stock

$135.99 - $135.99
$135.99
$135.99 - $135.99
$135.99

iFilters has combined top quality components to create the best RO DI booster pump in the market. The BP50KIT includes all the components needed to...

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$135.99 - $135.99
$135.99
$135.99 - $135.99
$135.99
Polaris UVA-2C UV Deactivator For RO & Drinking Water Systems 2 GPM - IFilters
Polaris Scientific

Polaris UVA-2C UV Deactivator For RO & Drinking Water Systems 2 GPM

UVA-2C
in stock

$115.50 - $115.50
$115.50
$115.50 - $115.50
$115.50

Polaris UVA-2C Whole House UV Ultraviolet Deactivator System 2 GPM with 9000 Hour Bulb. When Quality and Performance Matters, you can count on Pola...

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$115.50 - $115.50
$115.50
$115.50 - $115.50
$115.50
Hydronix PG25160L - 0-160 PSI Water Pressure Gauge 2.5" Stainless Steel 1/4" Port NPT, Lower Mount - IFilters
Hydronix

Hydronix PG25160L - 0-160 PSI Water Pressure Gauge 2.5" Stainless Steel 1/4" Port NPT, Lower Mount

PG25160L
in stock

$14.25 - $14.25
$14.25
$14.25 - $14.25
$14.25

The PG25160L is UV resistant, high-quality water pressure gauge designed with the OEM in mind. From the special synthetic fluid used to fill the ga...

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$14.25 - $14.25
$14.25
$14.25 - $14.25
$14.25
Auto Ship
iFilters RF-4520 Dual Purpose Radial Flow Cartridge 4.5" x 20" - IFilters
iFilters

iFilters Dual Purpose Radial Flow Water Filter Cartridge – RFC-93 / RFC93 Compatible Replacement – 20" x 4.5" Sediment & Activated Carbon Whole House Filter – Reduces Chlorine, Taste, Odor, Rust & Sediment for Home Water Systems

RF-4520
in stock

$62.99 - $62.99
$62.99
$62.99 - $62.99
$62.99

Upgrade your water system with the iFilters Dual Purpose Radial Flow Cartridge, designed to deliver both sediment filtration and carbon treatment i...

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$62.99 - $62.99
$62.99
$62.99 - $62.99
$62.99
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