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Crystal Quest Water Filters
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    ZIP codeHardness on record Four levelsSoft to very hard
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    Commercial systems

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    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

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    Single contaminant tests

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    Free tools

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    Need help? Get expert support from water filtration specialists (800) 934-0051 help@crystalquest.com

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Search filters, cartridges or a SKU Cart, 0 items 0
  • Whole house
  • Drinking water
  • Shower and bath
  • Softeners
  • Well water
  • Replacements
Crystal Quest Water Filters
Search filters, cartridges or a SKU
Water filters

Menu Water filters

Water filters

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

Shop by category

  • Whole house Filters every tap
  • Water softeners For hard water
  • Reverse osmosis For drinking water
  • Under sink Fits under the sink
Whole house
  • Whole house Water filters
  • Whole house Reverse osmosis
  • Whole house Salt-based softeners
  • Whole house Salt-free conditioner
  • All salt-free softeners
  • 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
Water problems

Menu Water problems

Water problems

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

Replacements

Menu Replacements

Replacements

  • Shower filter replacement cartridge
  • Bath Ball® replacement cartridge
  • Pitcher replacement cartridge
  • Filter cartridges
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
  • All RO membranes
Parts and equipment
  • Shop all parts
  • UV bulbs & parts
  • Valve control heads
  • Pumps and motors
  • Parts directory
Get help
  • Help center
  • Reorder from past orders
  • Find my filter
  • Subscribe and save
  • How often to change filters
  • When to replace a UV lamp
  • About RO membranes
Commercial & industrial

Menu Commercial & industrial

Commercial & 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.
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
Reverse osmosis
  • Commercial RO
  • Brackish water RO
  • Seawater desalination
  • Medical-use RO
  • Dosing and pretreatment
  • Industrial RO
  • Industrial fresh water
  • Industrial brackish water
  • Industrial seawater
  • All commercial RO
Commercial systems
  • SMART systems
  • GAC systems
  • Inline systems
  • Ultrafiltration
  • Commercial softeners
  • Traditional softeners
  • Salt-free anti-scale
  • Demineralizers (DI)
  • Water stores
Commercial/industrial specialty systems
  • All 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
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
Water testing

Menu Water testing

Water testing

Have a lab report?

Compare your lab results with EPA limits.

Analyze my report
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
  • Lead in water lookup
  • Hardness converter
  • Softener size calculator
  • All water tools
Resources and help

Menu Resources and help

Resources and help

  • Knowledge base
  • Educational articles
  • Video resources
  • Document Center
  • YouTube channel
Help and support
  • Help center
  • Order status
  • Manage subscription
  • Returns
  • Warranty
  • Installation guides
  • Submit a ticket Opens in a new window.
  • Contact us
Articles by topic
  • All articles
  • Filtration systems
  • Contaminants
  • Filtration technology
  • Filter types
  • Applications
Company
  • About us
  • Reviews
  • Trustpilot reviews Opens in a new window.
  • Custom manufacturing
  • All business opportunities
Need help? Get expert support from water filtration specialists
  • Talk to a specialist(800) 934-0051, Mon to Fri, 9am to 5pm ET
  • Email ushelp@crystalquest.com

Made in USA. Free shipping on residential orders over $150 within the lower 48 US states

Find my system Call

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

Common part numbers

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

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

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

  1. Home
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Results for “whole house filter”

238 results

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    Products

    • Nitrate Removal Filter Cartridge

      Nitrate Removal Filter Cartridge

      From $59.00

      5.0 (10)
    • Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 2000M | 16 Stages of Filtration

      Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 2000M | 16 Stages of Filtration

      $370.31

      4.5 (2)
    • SMART GAC Water Filtration System

      SMART GAC Water Filtration System

      From $2,479.99

      Commercial system

    • Handheld Shower Filter

      Handheld Shower Filter

      From $61.95

      4.6 (44)
    • Spot-Free Car Wash Filter - Portable Deionizing Water Filter

      Spot-Free Car Wash Filter - Portable Deionizing Water Filter

      From $297.00

      Inline water filter

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

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

      $488.95

      5.0 (1)
    • 6 GPM Ultraviolet Inline Germicidal Water Sterilizer

      6 GPM Ultraviolet Inline Germicidal Water Sterilizer

      $409.00

      UV system

    • Arsenic Removal + SMART Refrigerator / In-line Water Filter System

      Arsenic Removal + SMART Refrigerator / In-line Water Filter System

      $134.00

      5.0 (2)
    • Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 3000CP | 13 Stages of Filtration

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

      $668.71

      Reverse osmosis system

    • Radium & Uranium Water Filtration System

      Radium & Uranium Water Filtration System

      From $4,379.99

      Commercial system

    • Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 4000MP | 17 Stages of Filtration

      Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 4000MP | 17 Stages of Filtration

      $740.61

      Reverse osmosis system

    • Arsenic Removal Water Filtration System

      Arsenic Removal Water Filtration System

      From $4,379.99

      4.0 (1)
    • Catalytic Coconut Shell GAC (per cubic foot)

      Catalytic Coconut Shell GAC (per cubic foot)

      From $107.50

      Part # CQE-RM-05015

    • Guardian Multimedia

      Guardian Multimedia

      From $125.50

      Filtration media

    • 2510 Automatic Control Head

      2510 Automatic Control Head

      From $694.99

      Control Heads

    • Faucet Mount Filter Cartridge

      Faucet Mount Filter Cartridge

      From $29.50

      4.9 (41)
    • Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 3000M | 16 Stages of Filtration

      Thunder Ultrafiltration/Reverse Osmosis Under Sink Water Filter | 3000M | 16 Stages of Filtration

      $524.90

      Reverse osmosis system

    • 100 GPD Standard Reverse Osmosis Membrane

      100 GPD Standard Reverse Osmosis Membrane

      $59.00$99.00 Sale

      5.0 (1)
    • SMART Inline Filter Cartridge / Reverse Osmosis

      SMART Inline Filter Cartridge / Reverse Osmosis

      $69.00

      5.0 (4)
    • Voyager Mini Inline Water Filter System

      Voyager Mini Inline Water Filter System

      $59.00

      4.8 (4)
    • GAC Inline Filter RO Cartridge

      GAC Inline Filter RO Cartridge

      $49.00

      5.0 (4)
    • Quest Micro-Blaster Ultraviolet Air Filtration System

      Quest Micro-Blaster Ultraviolet Air Filtration System

      From $3,075.00

      Air purification

    • Lead Countertop Water Filter System

      Lead Countertop Water Filter System

      From $130.90

      5.0 (1)
    • Acid Neutralizing Water Filtration System

      Acid Neutralizing Water Filtration System

      From $1,929.99

      Commercial system

    Previous page 1…5678910 Next page

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