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Crystal Quest Water Filters
    • Whole house Filters every tap
    • Water softeners For hard water
    • Whole house RO RO for every tap
    • Under-sink reverse osmosis For drinking water
    • Under sink Fits under the sink
    • Countertop Sits by the faucet
    • Shower and bath For shower and bath
    • Inline On a water line

    Whole house

    • Whole house Water filters
    • Whole house Reverse osmosis
    • Whole house Salt-based softeners
    • Whole house Salt-free conditioner
    • All salt-free conditioners
    • UV sterilization
    All residential systems

    Drinking water

    • Countertop
    • Inline
    • Under sink RO
    • Countertop RO
    • Reverse osmosis guide
    • Faucet mount system
    • Water pitcher
    All drinking water

    Specialty filtration

    • Acid neutralizing
    • Alkaline
    • Arsenic (whole house)
    • Radium and uranium
    • Silica
    • Sulfate
    • Tannins
    • Turbidity (cloudy water)
    All specialty filters

    More ways to filter

    • Shower and bath filters
    • Water coolers
    • Off-grid portable RO
    • Chemical dosing
    • Oxidation disinfection
    • Ozone disinfection
    • UV air sterilizer
    • Bundles
    • Gift card

    Not sure which system you need?

    Answer a few questions about your water and home to find the right system.

    Take the quiz

    Or try a focused quiz

    • Well water filter finder
    • Water softener quiz
  • By problem

    • Rotten egg smell
    • Pool smell or chlorine taste
    • Orange or rust stains
    • Black or brown stains
    • Blue-green stains
    • Cloudy water
    • Tea-colored water

    By contaminant

    • Arsenic
    • Fluoride
    • Lead
    • Iron, manganese and sulfur
    • Microplastics
    • Nitrate
    • PFAS
    All contaminants

    By water source

    • City water Chlorine, chloramine
    • Well water Iron and sulfur

    Where you live

    • Near a military base, airport or fire training site
    • Near a farm
    • Near the coast
    • Granite or mountain areas
    • Older home built before 1986

    How hard is your water?

    Enter your ZIP code to see the tap water hardness on record for your area.

    ZIP code Hardness on record Four levels Soft to very hard
    • Shower filter replacement cartridge
    • Bath Ball® replacement cartridge
    • Pitcher replacement cartridges
    • Filter cartridges
    • RO membranes
    • RO filter packs
    • UV bulbs & parts

    Cartridges and media

    • Replacement cartridges
    • Filtration media & resins
    • RO filter packs
    RO membranes and components
    • Under sink RO membrane
    • Low energy freshwater RO membrane
    • Brackish RO membrane
    • Desalination RO membrane
    • Membrane cleaners
    • RO parts and accessories
    • Water storage tanks
    Parts and equipment
    • UV bulbs & parts
    • Valve control heads
    • Pumps and motors
    Get help
    • Reorder from past orders
    • Find my filter
    • Subscribe and save
    • How often to change filters
    • When to replace a UV lamp
    • About RO membranes

    Find my filter

    Type the code printed on your cartridge.

    Common part numbers

    • Pitcher
    • CQE-RC-04002 SMART cartridge
    • CQE-RC-04000 Carbon block
  • Commercial and industrial

    Every system built to order

    Quotes on request, from a single inline filter to industrial reverse osmosis.

    Request a quote Opens in a new window. (800) 934-0051

    Industries

    • Agriculture and farming
    • Breweries
    • Cannabis cultivation
    • Commercial laundry
    • Food and beverage
    • Government and municipal
    • Medical and lab
    • Mining, oil and gas
    • Multi-residential
    • Plants and manufacturing
    • Schools and campuses
    • Service industries
    All industries

    Reverse osmosis

    • Brackish water RO
    • Seawater desalination
    • Medical-use RO
    • Dosing and pretreatment
    • Industrial RO
    • Industrial fresh water
    • Industrial brackish water
    • Industrial seawater
    Commercial RO

    Commercial systems

    • SMART systems
    • GAC systems
    • Inline systems
    • Ultrafiltration
    • Commercial softeners
    • Traditional softeners
    • Salt-free anti-scale
    • Demineralizers (DI)
    • Water stores

    Industrial

    • Industrial filtration
    • Nanofiltration
    • Industrial desalination
    • Ozone systems
    • Industrial UV
    • Chlorination
    • Industrial softeners
    • Industrial salt-free
    • Deionization
    • Wastewater reclamation
    • Containerized systems
    • Cartridge housings
    • Disaster relief
    Commercial/industrial specialty systems
    • Acid neutralizing (commercial)
    • Arsenic removal
    • Fluoride removal
    • Lead removal
    • Nitrate removal
    • Tannin removal
    • Turbidity removal
    • Iron, manganese, sulfide
    • Radium and uranium (commercial)
    • Sulfate removal
    • Silica removal
    • Alkalizer and mineralizer
  • Full water tests

    • City water test
    • Well water test
    • Radiological test
    • Complete RO water test
    • Problem check test
    • Waterborne pathogen panel
    • FHA and VA loan test
    All water tests

    Test collections

    • Specialty tests
    • Quick series tests
    • BART bacteria tests
    • Contaminant-specific tests

    Single contaminant tests

    • Lead test
    • Arsenic test
    • Fluoride test
    • Quick bacteria test
    • Nitrate and nitrite test
    • Radon test
    • Uranium test

    Free tools

    • Water hardness by ZIP
    • PFAS map
    • Water report analyzer
    • Lead in water lookup
    • Hardness converter
    • Softener size calculator
    All water tools

    Have a lab report?

    Compare your lab results with EPA limits.

    Analyze my report
  • Explore our hubs

    • Document Center
    • YouTube channel
    • Knowledge base Questions and answers
    • Educational articles Guides and how-tos
    • Video resources Watch and learn
    Articles by topic
    • Filtration systems
    • Contaminants
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    • Filter types
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    Help and support

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    • Submit a ticket Opens in a new window.
    • Contact us

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    • About us
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    • Trustpilot reviews Opens in a new window.
    • Custom manufacturing
    • All business opportunities
    Need help? Get expert support from water filtration specialists (800) 934-0051 help@crystolquest.shop

    A water specialist can help you choose and care for your system, Monday to Friday, 9am to 5pm ET.

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  • Whole house
  • Water softeners
  • Whole house RO
  • Under-sink reverse osmosis
  • Under sink
  • Countertop
  • Shower and bath
  • Well water
  • Replacements

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Need help?(800) 934-0051

Finding a replacement?

Find the system you own, then confirm its replacement. A model or cartridge code helps.

Find replacements for my system Find your model or part number

Need help with your system?

For leaks or a system that is not working, send our team the model and a description of the problem.

Get product support Visit the Help Center

Try the code printed on your cartridge, a product name, or a problem like hard water. Or let us find it for you. Talk to a specialist

Popular searches

  • Shower filter
  • Whole house filter
  • High flow
  • Reverse osmosis
  • In-line refrigerator filter
  • Water softener

Popular replacements

See all replacements
  • Coconut Based 5-Micron Carbon Block cartridge From $22.95
  • SMART cartridge From $59.00
  • Shower Filter cartridge From $29.50
  • Bath Ball® cartridge From $39.50

Quick links

  • Check your water Hardness by ZIP code
  • Well water filter finder A short quiz that matches a system
  • Water test kits Lab tests for city and well water

Popular guides

  • How Often to Change Your Water Filter 14 min read
  • Whole House Water Filter Maintenance 11 min read
  • Hard Water 101 19 min read
  • How to Test Water Hardness at Home 6 min read

Common part numbers

  • CQE-RC-04000 Coconut Based 5-Micron Carbon Block cartridge
  • CQE-RC-04002 SMART cartridge
  • CQE-RC-04045 Shower Filter cartridge
  • CQE-RC-04052 Bath Ball® cartridge

  1. Home
  2. Search

Finding a replacement?

Find the system you own, then confirm its replacement. A model or cartridge code helps.

Find replacements for my system Find your model or part number

Need help with your system?

For leaks or a system that is not working, send our team the model and a description of the problem.

Get product support Visit the Help Center

Results for “in-line refrigerator filter”

337 results

All Products Guides Pages

Collections

    Best match

    Products

    • Filtration media, close-up of fine dark granules with a Crystal Quest logo watermark

      Catalytic Coconut Shell GAC (per cubic foot)

      From $107.50

      Part # CQE-RM-05015

    • Midnight Family Bundle, black shower filter with fixed head, black handheld head and black countertop filter with diverter

      Midnight Family Bundle

      $179.95

    • High pH Membrane Cleaner (organic), 1.5 pound white jug with green product label, front view

      High Ph Membrane Cleaner (organic)

      From $31.00

    • Thunder 3000CP under sink RO system with UV sterilizer, booster pump, storage tank, post filter and chrome faucet

      Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 3000CP | 13 Stages of Filtration

      $668.71

      Reverse osmosis system

    • Bath Ball Replacement Cartridge Bundle, white Bath Ball with handle and chrome band beside a mesh-faced replacement cartridge

      Bath Ball® - Additional Replacement Filter Cartridge Bundle

      From $94.45

      5.0 (1)
    • 165 Gallon Atmospheric Storage Tank Kit with Pump, black tank with booster pump and white pressure tank, 165 Gallon Kit callout

      Atmospheric Storage Tank Kit with Pump - 165 Gallon

      $1,740.00

      Part # CQE-ST-165

    • Bathing Essentials Bundle in white: Bath Ball, shower filter with head, and two replacement cartridges

      Bathing Essentials Bundle

      From $168.90

      5.0 (1)
    • Radium and Uranium Water Filtration System, single white fiberglass tank with automatic control valve

      Silica Removal Water Filtration System

      From $4,809.99

      Commercial system

    • Chrome Faucet with 1/4 inch Tube, European lever handle, side view

      Chrome Faucet with 1/4" Tube (European Handle)

      $29.95

      5.0 (9)
    • Sulfate Removal Media, close-up of tan granular media with Crystal Quest logo watermark

      Sulfate Removal Media

      From $162.50

      Part # CQE-RM-06000

    • Ozonator Sterilizer for Countertop Water Cooler, beige rectangular unit with clear tubing and red and black wires

      Ozonator Sterilizer System for Countertop Water Cooler

      $119.00

      Part # CQE-OZ-00101

    • 2-in-1 Combo Shower Filter and Bath Ball Bundle, white shower filter with fixed and handheld heads, cartridges, Bath Ball

      2-in-1 Combo Shower Filter and Bath Ball® Bundle

      From $203.90

      5.0 (2)
    • Lead Removal Water Filtration System, 7 GPM, white tank with control valve and black base beside a black tank

      Lead Removal Water Filtration System

      From $2,919.99

      Commercial system

    • 3900 Flow Timer and Meter Control Head, mechanical timer dial version with brass body

      3900 Flow Timer & Meter Control Head

      From $3,849.95

    • 4" x 40" Brackish Water Reverse Osmosis Membrane, white wrapped element with label, angled view

      4" x 40" Brackish Water Reverse Osmosis Membrane

      From $354.81$549.93 Sale

      5.0 (1)
    • Metal Removal Media, close-up of black granules mixed with gold flakes, Crystal Quest logo overlay

      Metal Removal Media

      From $137.50

      5.0 (3)
    • Air Purifying Bag, white fabric charcoal GAC bag with metal grommet and Crystal Quest logo

      Air Purifying Bag - 100% Charcoal GAC

      $38.95

      Part # CQE-PB-0000

    • 1 GPM Countertop Ultraviolet Water Sterilizer, stainless UV chamber with spout, faucet adapter hose and power cord

      1 GPM Countertop Ultraviolet Water Sterilizer

      $219.00

      UV system

    • TURBO Ultrafiltration Bottleless Water Cooler, black floor-standing cooler with silver front panels and two taps

      TURBO Ultrafiltration Bottleless Water Cooler

      From $764.00

      5.0 (1)
    • 2.5 x 20 inch White Poly Sump and Cap Assembly, tall white housing with threaded cap port

      2.5" x 20" White Poly Sump and Cap Assembly

      $99.00

      5.0 (2)
    • SHARK Desal Filtration System 600 GPD, white frame-mounted system with control panel, flow meters, gauges and pump

      SHARK Desal Filtration System 600 Gallons Per Day (GPD)

      $5,706.00

      Reverse osmosis system

    • Infra-Red Balls, close-up of orange red balls in mixed sizes, Crystal Quest logo overlay

      Infra-Red Balls (per pound)

      $17.90

      5.0 (2)
    • 2.5" x 40" Brackish Water Reverse Osmosis Membrane, long white wrapped element with label, angled view

      2.5" x 40" Brackish Water Reverse Osmosis Membrane

      From $305.05$499.25 Sale

      RO membrane

    • Tannin Removal Water Filtration System, 15 GPM automatic, white tank with control valve and black brine tank

      Tannin Removal Water Filtration System

      From $3,199.99

      Commercial system

    Previous page 1…89101112…15 Next page
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    • Eco friendly

      Protecting our planet through sustainable practices.

    • BPA free

      Toxin-free products that put your health and the environment first.

    • ISO 9001 certified

      Quality management for product quality, customer satisfaction and steady improvement.

      View certification (PDF, opens in a new tab)
    • Built in the USA

      Supporting American jobs and contributing to our nation's economic growth.

    Fresh water begins here®

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    Specialty filters

    • PFAS
    • Fluoride
    • Lead
    • Arsenic
    • Iron and sulfur
    • Microplastics
    • Specialty systems
    • All contaminants

    Replacement filters

    • Replacement cartridges
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    • Filter media and resin
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    Test and learn

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    For business

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