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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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2.5" Gauge 0-100PSI S.S 1/4" - IFilters
Hydronix

2.5" Gauge 0-100PSI S.S 1/4"

PG25100L
in stock
$13.28 - $13.28
$13.28
$13.28 - $13.28
$13.28

The PG25100L is UV resistant, high quality pressure gauge designed with the OEM in mind. From the special synthetic fluid used to fill the gauges t...

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$13.28 - $13.28
$13.28
$13.28 - $13.28
$13.28
Auto Ship
SW-CB5-4510 Whole House Sediment & Carbon Block Water Filter, 5 Micron 4.5"x10" - IFilters
iFilters

SW-CB5-4510 Whole House Sediment & Carbon Block Water Filter, 5 Micron 4.5"x10"

SW-CB5-4510
in stock

$41.00 - $41.00
$41.00
$41.00 - $41.00
$41.00

This dual filter set includes the SW5-4510 Sediment String-wound filter and CB5-4510 CTO carbon block whole house filters. Suitable for whole hou...

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$41.00 - $41.00
$41.00
$41.00 - $41.00
$41.00
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Dual Stage Drinking Water Filter Replacement Set, filters VOC Mercury Lead
Dual Stage Drinking Water Filter Replacement Set, filters VOC Mercury Lead
Smart Pack

Smart Pack 0.5 & 5 Micron Carbon Block Under-Sink RO Replacement Set | GXSV10R Compatible – 2.5" x 10"

IF2-CB-2510-D
in stock

$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99

The Smart Pack Dual-Stage Under Sink Replacement Set includes two purpose-built filters designed to keep your water crisp, clean, and great-tasting...

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$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99
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Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 75 GPD Membrane
Smart Pack

Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 75 GPD Membrane

RO-75KIT
in stock
$41.15 - $41.15
$41.15
$41.15 - $41.15
$41.15

5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 75 GPD Membrane. For any standard RO system. Sediment, UDF, CTO, Membrane and GAC ...

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$41.15 - $41.15
$41.15
$41.15 - $41.15
$41.15
iFilters LWH-D Whole House Water Filter System Sediment CTO City/Well Water Filtration - IFilters
LWH-D Variations
iFilters

iFilters LWH-D Whole House Water Filter System Sediment CTO City/Well Water Filtration

LWH-D
in stock

$85.99 - $85.99
$85.99
$85.99 - $85.99
$85.99

iFilters LWH-D Whole House Dual Stage Water Filter System For Sediment & CTO Filtration – Ideal for City & Well Water The iFilters LWH-D is...

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$85.99 - $85.99
$85.99
$85.99 - $85.99
$85.99
Aquatrol TB-65-54T Distributor Riser Tube w/ Fine Mesh Basket For 54" Tanks, 1.05" OD - IFilters
Aquatrol

Aquatrol TB-65-54T Distributor Riser Tube w/ Fine Mesh Basket For 54" Tanks, 1.05" OD

TB-65-54T
in stock

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

Aquatrol TB-65 Distributor Riser Tube with Fine Mesh Basket – Fits 54" Tanks (1.05" OD) The Aquatrol TB-65-54T Distributor Riser Tube is a high-qua...

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$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
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Hydro Guard HDG-CB6-14 (CB6) Carbon Block Water Filter Replacement Cartridge NSF-certified
Hydro Guard HDG-CB6-14 (CB6) Carbon Block Water Filter Replacement Cartridge NSF-certified
Hydro Guard

Hydro Guard HDG-CB6-14 (CB6) Carbon Block Water Filter Replacement Cartridge NSF-certified

HDG-CB6-14
in stock

$35.99 - $35.99
$35.99
$35.99 - $35.99
$35.99

Hydro Guard HDG-CB6-14 Carbon Block Water Filter – CB6 Compatible Replacement Cartridge (NSF) The Hydro Guard HDG-CB6-14 Carbon Block Water Filter ...

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$35.99 - $35.99
$35.99
$35.99 - $35.99
$35.99
Countertop Ultra Drinking Water Filter For VOCs Chlorine, Clear
Countertop Ultra Drinking Water Filter For VOCs Chlorine, Clear
iFilters

Countertop Ultra Drinking Water Filter For VOCs Chlorine, Clear

CNTP-1C
in stock

$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95

NOTE: Our faucets are NSF certified, Safe for Drinking Water and comply with NSF/ANSI Standard 372 for low-lead content, meeting the strict require...

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$49.95 - $49.95
$49.95
$49.95 - $49.95
$49.95
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Sediment Pleated Water Filter City or Well Water, Washable 4.5" x 20", 30 Micron - IFilters
Sediment Pleated Water Filter City or Well Water, Washable 4.5" x 20", 30 Micron - IFilters
iFilters

Sediment Pleated Water Filter City or Well Water, Washable 4.5" x 20", 30 Micron

SP30-4520
in stock

$34.99 - $34.99
$34.99
$34.99 - $34.99
$34.99

The SP30-4520 4.5" x 20" 30-micron polyester pleated cartridges are manufactured from durable polyester to provide a superior pleated Filter that i...

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$34.99 - $34.99
$34.99
$34.99 - $34.99
$34.99
O-Ring For HF45 Filter Housing - IFilters
Hydronix

O-Ring For HF45 Filter Housing

HF45-ORING
in stock

$2.55 - $2.55
$2.55
$2.55 - $2.55
$2.55

Replacement O-Ring for the Hydronix HF45 filter housings. Made from durable Buna-N material. This replacement O-Ring is made to be used with the Op...

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$2.55 - $2.55
$2.55
$2.55 - $2.55
$2.55
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Aquatrol MED-CAT110E - Premium Grade cation resin
Aquatrol

Aquatrol MED-CAT110E - Premium Grade Cation Resin - 10% Crosslink Premium Grade Water Softening Resin, Aquatrol 1 CuFt

MED-CAT110E
in stock

$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00

Aquatrol CAT110E – 10% Crosslink Premium Grade Cation Resin for Water Softening (1 CuFt) The Aquatrol CAT110E Premium Grade Cation Resin is a high-...

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$150.00 - $150.00
$150.00
$150.00 - $150.00
$150.00
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Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial - 2400 GPD
Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial - 2400 GPD - IFilters
Hydron

Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial - 2400 GPD

BW-4040
in stock
$174.99 - $174.99
$174.99
$174.99 - $174.99
$174.99

Hydron BW-4040 Reverse Osmosis Membrane – High-Performance Commercial RO, 2400 GPD The Hydron BW-4040 Reverse Osmosis Membrane is a high-efficiency...

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$174.99 - $174.99
$174.99
$174.99 - $174.99
$174.99
Aquatrol AQT-MFV-1 Manual Filter Valve
Aquatrol AQT-MFV-1 Manual Filter Valve – 3-Cycle Control for 2.5" Port Tanks
Aquatrol

Aquatrol AQT-MFV-1 Adjustable 3 cycle control Manual Filter Valve For 2.5" Port Tanks.

AQT-MFV-1
in stock

$54.95 - $54.95
$54.95
$54.95 - $54.95
$54.95

Aquatrol AQT-MFV-1 Manual Filter Valve – 3-Cycle Control for 2.5" Port Tanks The Aquatrol AQT-MFV-1 Manual Filter Valve is a high-quality, easy-to-...

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$54.95 - $54.95
$54.95
$54.95 - $54.95
$54.95
Aquatrol - AQT-TH1-25 - 1" In and Out Water Softener or Filter Head For 2.5" Port Tanks
Aquatrol

Aquatrol - AQT-TH1-25 - 1" In and Out Water Softener or Filter Head For 2.5" Port Tanks

AQT-TH1-25
in stock

$24.95 - $24.95
$24.95
$24.95 - $24.95
$24.95

Aquatrol AQT-TH1-25 – 1" In & Out Water Softener or Filter Head for 2.5" Port Tanks The Aquatrol AQT-TH1-25 Water Softener & Filter Head is...

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$24.95 - $24.95
$24.95
$24.95 - $24.95
$24.95
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iFilters Sediment Grooved Water Filter Cartridge - 2.5" x 10" - 5 Micron - Interchangeable with AP110 Model - IFilters
iFilters

iFilters Sediment Grooved Water Filter Cartridge - 2.5" x 10" - 5 Micron - Interchangeable with AP110 Model

SG5-2510
in stock

$8.57 - $8.57
$8.57
$8.57 - $8.57
$8.57

The iFilters SG5-2510 measure 2.5" x 9.875" (2.5" x 10" standard) and are made of 100% pure polypropylene material. The iFilters SG5-2510 filters h...

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$8.57 - $8.57
$8.57
$8.57 - $8.57
$8.57
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(4 Pack) Hydronix CB-45-2005/4 CTO Whole House Coconut Shell Carbon Block Water Filters 20" x 4.5", 5 micron - IFilters
CB-45-2005 Variations
Hydronix

(4 Pack) Hydronix CB-45-2005/4 CTO Whole House Coconut Shell Carbon Block Water Filters 20" x 4.5", 5 micron

CB-45-2005/4
in stock

$135.95 - $135.95
$135.95
$135.95 - $135.95
$135.95

(4 Pack) Hydronix CB-45-2005/4 Whole House Carbon Block Water Filters – 20" x 4.5", 5 Micron High-Performance Filtration for Residential & Comm...

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$135.95 - $135.95
$135.95
$135.95 - $135.95
$135.95
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iFilters GAC Carbon Water Filter Cartridge for LWHGAC V2, LWH-D V2 Systems - IFilters
iFilters

iFilters GAC Carbon Water Filter Cartridge for LWHGAC V2, LWH-D V2 Systems

GAC-2509
in stock
$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99

The GAC-2509 Premium Carbon GAC Water Filter is a Granular Activated Coconut Shell Carbon filter that Removes Chlorine, taste and Odor and has a Hi...

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$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99
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iFilters KDF and GAC Well or City Water Whole House Filtration 4.5" x 10" - IFilters
iFilters KDF and GAC Well or City Water Whole House Filtration 4.5" x 10" - IFilters
iFilters

iFilters KDF and GAC Well or City Water Whole House Filtration 4.5" x 10"

KDF1-4510
in stock

$54.99 - $54.99
$54.99
$54.99 - $54.99
$54.99

KDF1-4510 4.5" x 10" Coconut GAC + 1 LB KDF cartridge. For City or Well Water Whole House or Commercial use. This filter is made from coconut shell...

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$54.99 - $54.99
$54.99
$54.99 - $54.99
$54.99
Aquatrol TD-1203 Top Upper Distributor Fine Mesh Basket – Fits 1.05" Riser Tubes
Aquatrol

Aquatrol TD-1203 Top Upper Distributor Fine Mesh Basket, Aquatrol, Fleck, Clack, Autotrol, 1.05" ID

TD-1203
in stock

$8.50 - $8.50
$8.50
$8.50 - $8.50
$8.50

Aquatrol TD-1203 Top Upper Distributor Fine Mesh Basket – Fits 1.05" Riser Tubes The Aquatrol TD-1203 Top Upper Distributor Fine Mesh Basket is a h...

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$8.50 - $8.50
$8.50
$8.50 - $8.50
$8.50
O-Ring For HF2, HF3 and HF4 Filter Housings - IFilters
Hydronix

O-Ring For HF2, HF3 and HF4 Filter Housings

HF2/3-ORING
in stock

$0.59 - $0.59
$0.59
$0.59 - $0.59
$0.59

Replacement O-Ring for the Hydronix HF2, HF3 and HF4 filter housings. These replacement O-Rings are made to be used with the Opaque or Clear HF2, H...

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$0.59 - $0.59
$0.59
$0.59 - $0.59
$0.59
Polaris Scientific EB-2439 Ultraviolet Water UV System Ballast, 24W - 39W 110V/220V - IFilters
Polaris Scientific EB-2439 Ultraviolet UV System Ballast – 24W-39W, 110V/220V
Polaris Scientific

Polaris Scientific EB-2439 Ultraviolet Water UV System Ballast, 24W - 39W 110V/220V

EB-2439
in stock

$45.99 - $45.99
$45.99
$45.99 - $45.99
$45.99

Polaris Scientific EB-2439 Ultraviolet UV System Ballast – 24W-39W, 110V/220V The Polaris Scientific EB-2439 is a high-quality OEM replacement ball...

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$45.99 - $45.99
$45.99
$45.99 - $45.99
$45.99
PRO+AQUA RV Filter and Water Softener Regeneration Kit for Sediment, Chlorine, Odor, Taste - IFilters
PRO+AQUA RV Filter and Water Softener Regeneration Kit for Sediment, Chlorine, Odor, Taste - IFilters
PRO+AQUA

PRO+AQUA RV Filter and Water Softener Regeneration Kit for Sediment, Chlorine, Odor, Taste

WS-P-REG-KITV2
in stock

$62.00 - $62.00
$62.00
$62.00 - $62.00
$62.00

This system is used as a pre-filter when filling your RV/Boat tank and used as a regeneration kit when regenerating your water softener. Great for ...

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$62.00 - $62.00
$62.00
$62.00 - $62.00
$62.00
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Hydronix CB-25-1005 Whole House RO Drinking Water Coconut Carbon Block Water Filter 5 m 2.5" x 10"
Hydronix CB-25-1005 Whole House RO Drinking Water Coconut Carbon Block Water Filter 5 m 2.5" x 10"
Hydronix

Hydronix CB-25-1005 Whole House RO Drinking Water Coconut Carbon Block Water Filter 5 m 2.5" x 10"

CB-25-1005
in stock
$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99

Hydronix CB-25-1005 Whole House RO Coconut Carbon Block Water Filter – 5 Micron, 2.5" x 10" Premium Carbon Block Filtration for Cleaner, Better-Tas...

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$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99
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Hydron HLP-4021 – 1000 GPD Light Commercial Reverse Osmosis Membrane
Hydron

Hydron HLP-4021 1000 GPD Reverse Osmosis Membrane Light Commercial, 4" x 21"

HLP-4021
in stock

$169.00 - $169.00
$169.00
$169.00 - $169.00
$169.00

Hydron HLP-4021 – 1000 GPD Light Commercial Reverse Osmosis Membrane High-Performance 4" x 21" RO Membrane for Light Commercial Applications The Hy...

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$169.00 - $169.00
$169.00
$169.00 - $169.00
$169.00
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