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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

iFilters

iFilter Whole House Water Filtration System 600,000 gal capacity GAC/KDF55, Main Tank

XWH-600-BOX1
in stock
$430.00 - $430.00
$430.00
$430.00 - $430.00
$430.00

$430.00 - $430.00
$430.00
$430.00 - $430.00
$430.00
AQT-TH2-4 - AQUATROL TANK HEAD IN/OUT 2" NPT 4" THREAD - IFilters
AQT-TH2-4 - AQUATROL TANK HEAD IN/OUT 2" NPT 4" THREAD - IFilters
Aquatrol

AQT-TH2-4 - AQUATROL TANK HEAD IN/OUT 2" NPT 4" THREAD

AQT-TH2-4
Out of stock
$44.35 - $44.35
$44.35
$44.35 - $44.35
$44.35

Aquatrol Tank Head, 2” NPT Inlet/Outlet, 4” Top Opening The AQT-TH2-4 Tank Head is a durable, injection-molded plastic In/Out head designed for st...

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$44.35 - $44.35
$44.35
$44.35 - $44.35
$44.35
iFilters

GL87PP LAMP FOR EQUIPMENT POLARIS UVA-200B

GL87PP
in stock
$148.30 - $148.30
$148.30
$148.30 - $148.30
$148.30

GL87PP LAMP FOR EQUIPMENT POLARIS UVA-200B 

$148.30 - $148.30
$148.30
$148.30 - $148.30
$148.30
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
Hydronix CB-25-0505 NSF Coconut Activated Carbon Block Water Filter 5 μm 2.5 x 5
Hydronix

Hydronix CB-25-0505 NSF Coconut Activated Carbon Block Water Filter 5 μm 2.5 x 5

CB-25-0505
in stock

$6.90 - $6.90
$6.90
$6.90 - $6.90
$6.90

The Hydronix CB-25-0505 NSF Certified Carbon Block water filter is manufactured with high purity coconut shell carbon and is available in a wide ra...

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$6.90 - $6.90
$6.90
$6.90 - $6.90
$6.90
Universal RO Drinking Water Systems Coconut Shell Carbon Block Filter 1 μm
Hydronix

Universal RO Drinking Water Systems Coconut Shell Carbon Block Filter 1 μm

CB-25-1001
in stock
$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99

The Hydronix CB-25-1001 NSF Certified Carbon Block water filter is manufactured with high purity coconut shell carbon and is available in a wide ra...

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$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99
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
2 Pack Whole House RO Drinking Systems Coconut Carbon Water Filter 5 μm 2.5 x 10
2 Pack Whole House RO Drinking Systems Coconut Carbon Water Filter 5 μm 2.5 x 10
Hydronix

2 Pack Whole House RO Drinking Systems Coconut Carbon Water Filter 5 μm 2.5 x 10

CB-25-1005/2
in stock
$17.27 - $17.27
$17.27
$17.27 - $17.27
$17.27

Hydronix CB-25-1005 Carbon Block filters are NSF/ANSI Standard 42 certified for material and structural safety. CB-25-1005 filters have a particle ...

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$17.27 - $17.27
$17.27
$17.27 - $17.27
$17.27
Reverse Osmosis Drinking Filter Systems Coconut Shell Carbon Water Filter 10 μm
Hydronix

Reverse Osmosis Drinking Filter Systems Coconut Shell Carbon Water Filter 10 μm

CB-25-1010
in stock
$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99

The Hydronix CB-25-1010 NSF Certified Carbon Block water filter is manufactured with high purity coconut shell carbon and is available in a wide ra...

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$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99
Universal Fit Coconut Shell Activated Carbon Block Water Filter 1 μm 2.5" x 20"
Hydronix

Universal Fit Coconut Shell Activated Carbon Block Water Filter 1 μm 2.5" x 20"

CB-25-2001
in stock
$23.00 - $23.00
$23.00
$23.00 - $23.00
$23.00

Hydronix CB-25-2001 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-25-2001 filters have a particle ...

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$23.00 - $23.00
$23.00
$23.00 - $23.00
$23.00
Whole House & RO Coconut Activated Carbon Block Water Filter 5 μm 2.5" x 20"
Hydronix

Whole House & RO Coconut Activated Carbon Block Water Filter 5 μm 2.5" x 20"

CB-25-2005
in stock
$18.51 - $18.51
$18.51
$18.51 - $18.51
$18.51

Hydronix CB-25-2005 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-25-2005 filters have a particle ...

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$18.51 - $18.51
$18.51
$18.51 - $18.51
$18.51
Whole House, RO Coconut Activated Carbon Block Water Filter 10 micron 2.5" x 20"
Hydronix

Whole House, RO Coconut Activated Carbon Block Water Filter 10 micron 2.5" x 20"

CB-25-2010
in stock
$19.50 - $19.50
$19.50
$19.50 - $19.50
$19.50

Hydronix CB-25-2010 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-25-2010 filters have a particle ...

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$19.50 - $19.50
$19.50
$19.50 - $19.50
$19.50
Wholehouse Hydroponics RO Carbon Block Water Filter 1 Micron 4.5" x 10"
Hydronix

Wholehouse Hydroponics RO Carbon Block Water Filter 1 Micron 4.5" x 10"

CB-45-1001
in stock

$32.08 - $32.08
$32.08
$32.08 - $32.08
$32.08

Hydronix CB-25-2010 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-25-2010 filters have a particle ...

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$32.08 - $32.08
$32.08
$32.08 - $32.08
$32.08
Whole House, Hydroponics, Commercial Coconut Carbon Block Water Filter 5 μm 10"
Hydronix

Whole House, Hydroponics, Commercial Coconut Carbon Block Water Filter 5 μm 10"

CB-45-1005
in stock
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00

Hydronix CB-45-1005 carbon block filters are NSF/ANSI standard 42 certified. CB-45-1005 filters have a particle retention Size of 5 microns, and ar...

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$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
Whole House, Hydroponics, Commercial Coconut Carbon Block Water Filter 10 μm 10"
Hydronix

Whole House, Hydroponics, Commercial Coconut Carbon Block Water Filter 10 μm 10"

CB-45-1010
in stock
$25.86 - $25.86
$25.86
$25.86 - $25.86
$25.86

Hydronix CB-45-1010 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-45-1010 filters have a particle ...

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$25.86 - $25.86
$25.86
$25.86 - $25.86
$25.86
Whole House, Commercial, Industrial Carbon Block Water Filter 1 μm 4.5" x 20"
Hydronix

Whole House, Commercial, Industrial Carbon Block Water Filter 1 μm 4.5" x 20"

CB-45-2001
in stock
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

Hydronix CB-45-2001 Carbon Block filters are NSF/ANSI Standard 42 certified for material and structural safety. CB-45-2001 filters have a particle ...

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$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter 4.5" x 20" - 5 μm
Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter 4.5" x 20" - 5 μm
Hydronix

Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter 4.5" x 20" - 5 μm

CB-45-2005
in stock

$39.50 - $39.50
$39.50
$39.50 - $39.50
$39.50

Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter – 4.5" x 20", 5 Micron Superior Water Filtration for Residential...

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$39.50 - $39.50
$39.50
$39.50 - $39.50
$39.50
Whole House, Hydroponics, Commercial Carbon Block Water Filter 10 μm 4.5" x 20"
Hydronix

Whole House, Hydroponics, Commercial Carbon Block Water Filter 10 μm 4.5" x 20"

CB-45-2010
in stock
$66.99 - $66.99
$66.99
$66.99 - $66.99
$66.99

Hydronix CB-45-2010 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-45-2010 filters have a particle ...

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$66.99 - $66.99
$66.99
$66.99 - $66.99
$66.99
Hydronix

Hydronix Clear Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10

EC-2510C
in stock
$7.23 - $7.23
$7.23
$7.23 - $7.23
$7.23

Hydronix empty cartridges can be used with carbon, resin, KDF, or any other media. Made from high-impact polystyrene to withstand continuous use an...

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$7.23 - $7.23
$7.23
$7.23 - $7.23
$7.23
Hydronix White Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10
Hydronix

Hydronix White Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10

EC-2510W
in stock
$6.99 - $6.99
$6.99
$6.99 - $6.99
$6.99

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

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$6.99 - $6.99
$6.99
$6.99 - $6.99
$6.99
White Empty Water Filter Cartridge For Pre or Post Use Durable 2.5" x 20" - IFilters
Hydronix

White Empty Water Filter Cartridge For Pre or Post Use Durable 2.5" x 20"

EC-2520W
in stock
$10.01 - $10.01
$10.01
$10.01 - $10.01
$10.01

Hydronix Empty Cartridges can be used with carbon, resin, KDF or any other media. Made from High Impact Polystyrene to withstand continuous usage a...

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$10.01 - $10.01
$10.01
$10.01 - $10.01
$10.01
Hydronix EC-4510W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 10
Hydronix

Hydronix EC-4510W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 10

EC-4510W
in stock
$12.93 - $12.93
$12.93
$12.93 - $12.93
$12.93

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

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$12.93 - $12.93
$12.93
$12.93 - $12.93
$12.93
Hydronix EC-4520W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 20 - IFilters
Hydronix EC-4520W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 20 - IFilters
Hydronix

Hydronix EC-4520W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 20

EC-4520W
in stock
$23.95 - $23.95
$23.95
$23.95 - $23.95
$23.95

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

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$23.95 - $23.95
$23.95
$23.95 - $23.95
$23.95
Hydro Guard HDG-CB-8-38 (CB8), Amway E84, A101, E-9225 Compatible Carbon Block Water Filter
Hydro Guard

Hydro Guard HDG-CB-8-38 (CB8), Amway E84, A101, E-9225 Compatible Carbon Block Water Filter

HDG-CB-8-38
in stock

$35.84 - $35.84
$35.84
$35.84 - $35.84
$35.84

Hydro Guard HDG-CB8-38 Carbon Block Water Filter – Compatible with CB8, Amway E84, A101, & E-9225 The Hydro Guard HDG-CB8-38 Carbon Block Water...

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$35.84 - $35.84
$35.84
$35.84 - $35.84
$35.84
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