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Water Filters

Discount Filter Store carries a wide variety of water filters and filtration systems to make sure that you have clean water everywhere you need it. We offer camping water filters, RV filters, water bottles for travelers on the go. Purify your office or home’s drinking water with countertop filter systems, commercial grade filters, and whole house filter systems. Our filters are protected by our 100% Price Match Guarantee. We are happy to offer you the lowest possible price on our filters, matching any lower price listed by competitors.

991 Products found

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  1. Bag Cation Exchange Water Softener Resin (1 Cubic Feet) by Tier 1

    Bag Cation Exchange Water Softener Resin (1 Cubic Feet) by Tier 1

    Price $1,000.00
  2. Doulton W9361123 Stainless Steel Gravity System with ATC Super Sterasyl Candle Filters

    Doulton W9361123 Stainless Steel Gravity System with ATC Super Sterasyl Candle Filters

    Price $174.95
  3. PENTEK-CFB-30 Carbon Block Replacement Filter Cartridge

    PENTEK-CFB-30 Carbon Block Replacement Filter Cartridge

    Price $26.99
  4. P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Price $5.99
  5. Q5533 Omnipure Undersink Replacement Water Filter

    Q5533 Omnipure Undersink Replacement Water Filter

    Price $18.99
  6. SWC-25-2010 Hydronic Sediment Replacement Filter

    SWC-25-2010 Hydronic Sediment Replacement Filter

    Price $11.99
  7. W9361122 Doulton SS2 Countertop Filter System

    W9361122 Doulton SS2 Countertop Filter System

    Price $165.00
  8. W9121214 Doulton ATC Super Sterasyl Replacement Element

    W9121214 Doulton ATC Super Sterasyl Ceramic Water Filter

    Price $38.99
  9. W9121200 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121200 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Price $33.00
  10. Pioneer Lead Reduction Whole House System Housing and Filter Kit

    Pioneer Whole House Lead Reduction Housing and Filter Kit

    Price $1,581.99
  11. 48,000 Grain Capacity Tier1 Water Softener with 20-Inch Pre-Filter Kit and 18 GPM UV Disinfection

    Tier1 Essential Series 48,000 Grain High Efficiency Digital Water Softener with Pre-Filtration System and UV Disinfection

    Price $1,145.99
  12. 48,000 Grain Capacity Tier1 Water Softener and 5 Stage Reverse Osmosis Drinking Water Filter System Kit

    Essential Series 48,000 Grain Water Softener with Under Sink Reverse Osmosis System + Reusable Glass Water Bottles

    Price $609.99

991 Products found

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Shopping Options
Category
  1. Undersink Water Filters & Systems 108 item
  2. Inline Water Filters 119 item
  3. Reverse Osmosis Water Filter Replacement Cartridges and Kits 153 item
  4. Commercial Grade Water Filters & Systems 248 item
  5. Countertop Water Filter Systems 25 item
  6. Water Filter Pitchers & Dispensers 35 item
  7. Camping Water Filters & Systems 34 item
  8. Shower Water Filters & Filter Systems 64 item
  9. Household Filters 76 item
Brand
  1. 3M 9 item
  2. American Hydro Systems 1 item
  3. American Plumber 11 item
  4. Aquamira 2 item
  5. Aquapatrol 1 item
  6. Aqua-Pure 8 item
  7. Aries 7 item
  8. Axeon 2 item
  9. BevGuard 6 item
  10. Brita 3 item
  11. Brondell 5 item
  12. Camco 5 item
  13. Clairify 2 item
  14. Claris 1 item
  15. Crystal Quest 46 item
  16. Culligan 57 item
  17. Cuno 4 item
  18. Daewoo 1 item
  19. Desal 2 item
  20. Doulton 40 item
  21. DuPont 21 item
  22. Everpure 39 item
  23. Filtrete 8 item
  24. Flexcon 1 item
  25. Flojet 1 item
  26. GE 12 item
  27. H2O International 2 item
  28. Halsey Taylor 1 item
  29. Harmsco 15 item
  30. Honeywell 4 item
  31. Hoshizaki 1 item
  32. Hydrologic 17 item
  33. Hydronix 29 item
  34. Hydrotech 13 item
  35. Hytrex 15 item
  36. Ice-O-Matic 3 item
  37. Inline Water Filters 3 item
  38. Insinkerator 1 item
  39. Katadyn 17 item
  40. Klean Kanteen 7 item
  41. KX Matrikx 3 item
  42. Liquatec 1 item
  43. Manitowoc 3 item
  44. GE Merlin 5 item
  45. Microline 5 item
  46. OmniFilter 5 item
  47. Omnipure 107 item
  48. Pentair 2 item
  49. Pentek 132 item
  50. PetSafe 1 item
  51. Pioneer 2 item
  52. PuROLine 1 item
  53. PuROTwist 5 item
  54. Purtrex 16 item
  55. QMP 2 item
  56. Rainshow'r 13 item
  57. Rusco 21 item
  58. Seychelle 12 item
  59. Sprite 24 item
  60. SteriPEN 3 item
  61. Tier1 140 item
  62. Valueline 1 item
  63. Viqua 47 item
  64. Water Factory Systems 3 item
  65. Water Sentinel 3 item
  66. Watts 12 item
  67. Whirlpool 6 item
  68. ZeroWater 14 item
Primary Filter Media
  1. Activated Carbon Block 144 item
  2. Activated Carbon w Ion Exchange Resin 1 item
  3. Anion Resin 1 item
  4. Arsenic Selective Resin 1 item
  5. Carbon Block 9 item
  6. Carbon Wrapped 11 item
  7. Carbon-Impregnated Fabric 2 item
  8. Ceramic with Carbon 14 item
  9. Eagle Redox Alloy 1 item
  10. Fine Mesh Pre-Resin Fluoride Removal Media 1 item
  11. Granular Activated Carbon 142 item
  12. Hexametaphosphate Crystals 1 item
  13. Ion Exchange Resin 26 item
  14. Nylon Monofilament 2 item
  15. Nylon Monofilament Mesh 6 item
  16. Permanganate Treated Zeolite 1 item
  17. Phosphate Crystal 3 item
  18. Pleated Fabric 6 item
  19. Pleated Polyester 10 item
  20. Polyester 14 item
  21. Polypropylene 120 item
  22. Scale Reduction media 5 item
  23. Semi-Permeable Membrane 24 item
  24. Sintered Ceramic 15 item
  25. Stainless Steel 9 item
Price
  1. $0.00 - $999.99 976 item
  2. $1,000.00 - $1,999.99 16 item
  3. $2,000.00 - $2,999.99 2 item
  4. $5,000.00 and above 1 item
Fitting Type
  1. Compression 3 item
  2. FNPT 24 item
  3. FPT 47 item
  4. GHT 3 item
  5. MNPT 4 item
  6. MPT 13 item
  7. NPT 57 item
  8. Push-fit 1 item
  9. Push In 6 item
  10. Quick-Change 7 item
  11. Quick Connect 62 item
Fitting Size (inches)
  1. 1/8 inch 3 item
  2. 1/4 inch 97 item
  3. 3/8 inch 55 item
  4. 1/2 inch 15 item
  5. 3/4 inch 36 item
  6. 1 inch 20 item
  7. 1-1/16 inches 3 item
  8. 1-1/4 inches 1 item
  9. 1-1/2 inches 13 item
  10. 2 inches 12 item
Advertised Size (in)
  1. 5 x 2-1/2 10 item
  2. 6 x 2-1/2 3 item
  3. 6 x 3 1 item
  4. 7 x 2 1 item
  5. 8 x 2-1/2 6 item
  6. 8 x 4-1/4 1 item
  7. 9-3/4 x 2-1/2 1 item
  8. 9-3/4 x 2-3/4 3 item
  9. 10 x 2 6 item
  10. 10 x 2-1/4 1 item
  11. 10 x 2-1/2 105 item
  12. 10 x 3-1/2 2 item
  13. 10 x 4-1/2 31 item
  14. 10 x 5 1 item
  15. 10-1/4 x 2-1/2 2 item
  16. 10-5/16 x 2-1/8 1 item
  17. 10-1/2 x 2-3/4 1 item
  18. 10-3/4 x 2-3/4 1 item
  19. 12 x 2-1/2 22 item
  20. 12-1/32 x 4-5/32 1 item
  21. 12 x 3-1/2 2 item
  22. 12-3/4 x 3 1 item
  23. 14 x 2-1/2 6 item
  24. 14 x 3-1/2 1 item
  25. 14 x 4 1 item
  26. 15 x 3-1/2 2 item
  27. 18 x 4 1 item
  28. 18-1/4 x 7-1/4 1 item
  29. 20 x 2-1/2 31 item
  30. 20 x 4-1/2 30 item
  31. 23 x 8 1 item
  32. 29 x 10 1 item
  33. 29-1/4 x 2-1/2 1 item
  34. 30 x 2-1/2 19 item
  35. 31-3/4 x 7-1/4 1 item
  36. 32 x 7 1 item
  37. 40 x 2-1/2 15 item
Micron Rating (Nominal)
  1. 0⋅05 90 item
  2. 0⋅1 4 item
  3. 0⋅2 11 item
  4. 0⋅3 3 item
  5. 1 88 item
  6. 2 1 item
  7. 3 5 item
  8. 5 152 item
  9. 10 38 item
  10. 15 3 item
  11. 20 16 item
  12. 25 29 item
  13. 30 14 item
  14. 40 3 item
  15. 50 19 item
  16. 75 5 item
  17. 100 8 item
  18. 150 1 item
  19. 200 4 item
  20. 254 1 item
  21. 400 1 item
  22. 600 1 item
  23. 800 2 item
Filter Diameter (inches)
  1. 8 - 9 1 item
Filter Length (inches)
  1. 21 - 24 1 item
Pool/Spa Manufacturer
  1. Tier1 1 item
Filter Life (months)
  1. 1 month 11 item
  2. 2 months 24 item
  3. 3 months 58 item
  4. 4 months 6 item
  5. 5 months 3 item
  6. 6 months 287 item
  7. 9 months 4 item
  8. 12 months 159 item
  9. 24 months 25 item
  10. 36 months 4 item
  11. 48 months 1 item
  12. 60 months 2 item
  13. 120 months 7 item
Filter Life (gallons)
  1. 0 - 100 37 item
  2. 100 - 250 27 item
  3. 250 - 500 20 item
  4. 500 - 1,000 58 item
  5. 1,000 - 2,500 128 item
  6. 2,500 - 5,000 68 item
  7. 5,000 - 10,000 27 item
  8. 10,000 - 13,000 3 item
  9. 10,000 - 25,000 78 item
  10. 25,000 - 50,000 16 item
  11. 50,000 and up 10 item