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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 Pack) Smart Pack Water Filters IF2-HDG-CB-6-14 CB6 Carbon Block Water Filter Replacement, MP MPC Systems
(2 Pack) Smart Pack Water Filters IF2-HDG-CB-6-14 CB6 Carbon Block Water Filter Replacement, MP MPC Systems
Smart Pack

Smart Pack CB6 2-Pack 0.5-Micron Carbon Block Under-Sink Water Filter Replacement | Multipure Aquaversa Compatible – 2.5″ x 6.5″

IF2-HDG-CB-6-14
in stock

$57.00 - $57.00
$57.00
$57.00 - $57.00
$57.00

Deliver fresh, better-tasting water to your home with the Smart Pack QC-CB6 2-Pack Carbon Block Replacement Filters, made for Multipure Aquaversa a...

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$57.00 - $57.00
$57.00
$57.00 - $57.00
$57.00
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iFilters Sediment Grooved Water Filter Cartridge for LWHSD V2, LWH-D V2 Systems - IFilters
iFilters

iFilters Sediment Grooved Water Filter Cartridge for LWHSD V2, LWH-D V2 Systems

SG5-2509
in stock

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

The iFilters SG5-2509 are made of 100% pure polypropylene material. The iFilters SG5-2509 filters have deep grooves for a larger filtration area an...

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$8.57 - $8.57
$8.57
$8.57 - $8.57
$8.57
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Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 50 GPD Membrane - IFilters
Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 50 GPD Membrane - IFilters
Smart Pack

Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 50 GPD Membrane

RO-50KIT4
in stock

$37.00 - $37.00
$37.00
$37.00 - $37.00
$37.00

4 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For most standard 4 Stage RO system. Sediment, CTO Carbon Block, ...

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$37.00 - $37.00
$37.00
$37.00 - $37.00
$37.00
PRO+AQUA FC-PK19-100E Replacement Filter Set for PRO-100-E ELITE GEN2 System, Sediment, KDF/Blend, Carbon Infused - IFilters
PRO+AQUA ELITE GEN2 Three-Stage Replacement Filter Set for PRO-100-E GEN2 System. Includes ACB - FC-19-ACB, CRK - FC-19-CRK and SED - FC-19-SED
PRO+AQUA

PRO+AQUA FC-PK19-100E Replacement Filter Set for PRO-100-E ELITE GEN2 System, Sediment, KDF/Blend, Carbon Infused

FC-PK19-100E
Out of stock

$0.00 - $0.00
$0.00
$151.95
$151.95 - $151.95
$151.95

PRO+AQUA ELITE GEN2 Three-Stage Replacement Filter Set for PRO-100-E GEN2 System Advanced Whole House Filtration for Superior Water Quality Designe...

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$0.00 - $0.00
$0.00
$151.95
$151.95 - $151.95
$151.95
Auto Ship
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
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
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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
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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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Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set – 50 GPD
Hydro Guard

Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set, 50 GPD

HDGT-45-SET
in stock

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

Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set – 50 GPD The Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set is...

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$139.99 - $139.99
$139.99
$139.99 - $139.99
$139.99
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RP-3500 Replacement Water Filter, 1000 Gal, Compatible with Frescapure 3500 WF0451 - IFilters
RP-3500 Variations
iFilters

RP-3500 Replacement Water Filter, 1000 Gal, Compatible with Frescapure 3500 WF0451

RP-3500
in stock

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

iFilters RP-3500 is a 100% compatible alternative replacement to the WF0451 filter used in the RP 3500 water filtration systems. Made from certifie...

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$59.95 - $59.95
$59.95
$59.95 - $59.95
$59.95
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Drinking Water Replacement Filter Set for 3 stage Filtration Systems - IFilters
iFilters

Drinking Water Replacement Filter Set for 3 stage Filtration Systems

IFD-U3PK
in stock

$38.99 - $38.99
$38.99
$38.99 - $38.99
$38.99

The IFD-U3PK combines Sediment filtration with GAC and KDF to filter and reduce heavy metals as well as chlorine, taste, and odor found in city and...

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$38.99 - $38.99
$38.99
$38.99 - $38.99
$38.99
FW-3 Big Blue Size Housing Wrench - IFilters
FW-3 Big Blue Size Housing Wrench - IFilters
Hydronix

FW-3 Big Blue Size Housing Wrench

FW-3
in stock

$6.00 - $6.00
$6.00
$6.00 - $6.00
$6.00

The FW-3 Wrench can be use to loosen Big Blue or Big Blue style filter housings when changing filters. The spanner wrench has four teeth. This FW-3...

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$6.00 - $6.00
$6.00
$6.00 - $6.00
$6.00
Aquatrol BT-1633-KIT Water Softener Brine Tank with Safety Float – 16" x 33", Black
Aquatrol

Aquatrol BT-1633-KIT Water Softener Salt brine Tank With Safety Float, Black 16x33

BT-1633-KIT
in stock

$129.95 - $129.95
$129.95
$129.95 - $129.95
$129.95

Aquatrol BT-1633-KIT Water Softener Brine Tank with Safety Float – 16" x 33", Black The Aquatrol BT-1633-KIT Universal Brine Tank is a high-quality...

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$129.95 - $129.95
$129.95
$129.95 - $129.95
$129.95
U200 Premium Drinking Water Filtration System 2 Stage & Designer Faucet
U200 Premium Drinking Water Filtration System 2 Stage & Designer Faucet
iFilters

U200 Premium Drinking Water Filtration System 2 Stage & Designer Faucet

U200
in stock

$97.95 - $97.95
$97.95
$97.95 - $97.95
$97.95

The iFilters U200 is designed in California from NSF-approved components and offers superior filtration at a lower cost compared to the leading com...

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$97.95 - $97.95
$97.95
$97.95 - $97.95
$97.95
PRO-S-80E_02
PRO-S-80E
PRO+AQUA

PRO+AQUA PRO-S-80E Whole House Water Softener High Demand Heavy Duty 80,000 Grain Capacity 1" Ports

PRO-S-80E
In stock

$1,149.95 - $1,149.95
$1,149.95
$1,149.95 - $1,149.95
$1,149.95

PRO+AQUA PRO-S-80E Whole House Water Softener – 80,000 Grain Capacity for High-Demand Homes The Ultimate Solution for Whole House Hard Water Soften...

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$1,149.95 - $1,149.95
$1,149.95
$1,149.95 - $1,149.95
$1,149.95
Harmony Series | 64,000 (64k) Grains Water Softener | 4+ Bathrooms | Up to 7 People - IFilters
Aquasure Harmony Series 64,000-Grain Whole House Water Softener – AS-HS64D
Aquasure

Harmony Series | 64,000 (64k) Grains Water Softener | 4+ Bathrooms | Up to 7 People

AS-HS64D
in stock

$729.99 - $729.99
$729.99
$729.99 - $729.99
$729.99

Harmony Series 64,000-Grain Whole House Water Softener – AS-HS64D The Aquasure Harmony Series AS-HS64D Whole House Water Softener is designed for h...

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$729.99 - $729.99
$729.99
$729.99 - $729.99
$729.99
UV Drinking Water Filtration Purifier System 3 Stage Filter & Sterilize USA Made
iFilters

UV Drinking Water Filtration Purifier System 3 Stage Filter & Sterilize USA Made

U200UV
in stock

$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00

The iFilters U200UV was designed and assembled in California from NSF approved components and offers superior filtration at a lower cost compared t...

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$200.00 - $200.00
$200.00
$200.00 - $200.00
$200.00
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Smart Pack Water Filters High Purity Coconut Shell Activated Carbon Water Filter - 750 GPD Life Span - 0.5 Micron - Compatible with Frescapure 4000 4500 5000 6000 Models
RP-CB456505 Variations
Smart Pack

Smart Pack Royal Prestige Replacement Filter – 0.5 Micron Coconut Shell Carbon Block Under-Sink Water Filter

RP-CB456505
in stock

$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

Enjoy cleaner, better-tasting water with the Smart Pack Royal Prestige Carbon Block Replacement Filter. Designed for FrescaPure 4000, 4500, 5000, 6...

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$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
Auto Ship
Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 30 μm
Hydronix

Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 30 μm

SWC-25-1030
in stock

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

Hydronix SWC-25-1030 polypropylene String wound filters have a particle retention Size of 30 micron and are used in a residential and commercial wa...

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$7.00 - $7.00
$7.00
$7.00 - $7.00
$7.00
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Poly-Ray Pleated Silicone, 0.2m Silicone Gasket DOE 10" - IFilters
HydroScientific

Poly-Ray Pleated Silicone, 0.2m Silicone Gasket DOE 10"

AR0020SF1A
in stock

$89.82 - $89.82
$89.82
$89.82 - $89.82
$89.82

HydroScientific AR Series Absolute Rated Pleated Filters are Beta 5000 Absolute rated filters. Made from 100% pure Polypropylene HydroScientific AR...

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$89.82 - $89.82
$89.82
$89.82 - $89.82
$89.82
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Hydronix AR0100EF1A Poly-Ray Pleated Silicone Filter – 1 Micron, EPDM Gasket, DOE, 10"
HydroScientific

HydroScientific AR0100EF1A Poly-Ray Pleated Silicone, 1m EPDM Gasket DOE 10"

AR0100EF1A
in stock

$89.82 - $89.82
$89.82
$89.82 - $89.82
$89.82

HydroScientific AR0100EF1A Poly-Ray Pleated Silicone Filter – 1 Micron, EPDM Gasket, DOE, 10" The HydroScientific AR0100EF1A is a high-performance ...

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$89.82 - $89.82
$89.82
$89.82 - $89.82
$89.82
Auto Ship
300 GPD Reverse Osmosis Membrane Light Commercial, 2.5" x 21" - IFilters
300 GPD Reverse Osmosis Membrane Light Commercial, 2.5" x 21" - IFilters
Hydron

300 GPD Reverse Osmosis Membrane Light Commercial, 2.5" x 21"

HLP-2521
in stock

$105.95 - $105.95
$105.95
$105.95 - $105.95
$105.95

Hydron HLP-2521 Light Commercial Reverse Osmosis Membrane elements produce 300 gallons per day with 99.0% rejection and a minimum rejection rate of...

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$105.95 - $105.95
$105.95
$105.95 - $105.95
$105.95
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