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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.

720 Products found

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  1. Doulton W9380002 Three Stage HIP3 Undersink Water Filtration System with 3x Doulton Water Filters

    Doulton W9380002 Three Stage HIP3 Undersink Water Filtration System with 3x Doulton Water Filters

    Price $247.99 List Price Price $354.99 Save 30%
    Free Shipping
  2. Doulton W9361122 Gravity Water Filter System Stainless Steel with 4x ATC Super Sterasyl Candle Filters

    Doulton W9361122 Gravity Water Filter System Stainless Steel with 4x ATC Super Sterasyl Candle Filters

    Price $252.99 List Price Price $361.99 Save 30%
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  3. Doulton W9361122 Gravity Water Filter System Stainless Steel with 4x Super Sterasyl Candle Filters

    Doulton W9361122 Gravity Water Filter System Stainless Steel with 4x Super Sterasyl Candle Filters

    Price $230.99 List Price Price $329.99 Save 30%
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  4. W9120133 British Berkefeld 7 Inch Ultra Fluoride Imperial Gravity Filter

    W9120133 British Berkefeld 7 Inch Ultra Fluoride Imperial Gravity Filter

    Price $79.90 List Price Price $114.99 Save 30%
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  5. Tier1 RO5 Replacement Filter Bundle 5-Pack

    Tier1 RO5 Replacement Filter Bundle 5-Pack

    Price $61.95
  6. Tier1 RO5 Replacement Filter Bundle 4-Pack

    Tier1 RO5 Replacement Filter Bundle 4-Pack

    Price $35.99 List Price Price $50.99 Save 29%
  7. Doulton W9380003 Housing + W9125010 10" Limescale Reduction Cartridge

    Doulton W9380003 Housing + W9125010 10" Limescale Reduction Cartridge

    Price $207.99 List Price Price $297.99 Save 30%
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  8. Pentair GRO-75EN TLC Encapsulated Membrane

    Pentair GRO-75EN TLC Encapsulated Membrane

    Price $99.99 List Price Price $142.99 Save 30%
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  9. Pentair GRO-50EN TLC Encapsulated Membrane

    Pentair GRO-50EN TLC Encapsulated Membrane

    Price $93.99 List Price Price $134.99 Save 30%
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  10. Everpure H-300 Comparable Filter System by Tier1

    Everpure H-300 Comparable Filter System by Tier1

    Price $93.99 List Price Price $134.99 Save 30%
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  11. Aqua Flo AQUA-FLO-1812-50 Reverse Osmosis Membrane Water Filter

    Aqua Flo AQUA-FLO-1812-50 Reverse Osmosis Membrane Water Filter

    Price $17.99 List Price Price $25.99 Save 30%
  12. Replacement Media for Tier1Essential Certified Series Whole House Water Filtration System For Chlorine, Taste & Odor Reduction

    Replacement Media for Tier1Essential Certified Series Whole House Water Filtration System For Chlorine, Taste & Odor Reduction

    Price $89.99 List Price Price $128.99 Save 30%
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720 Products found

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Shopping Options
Category
  1. Undersink Water Filters & Systems 86 item
  2. Inline Water Filters 97 item
  3. Reverse Osmosis Water Filter Replacement Cartridges and Kits 125 item
  4. Commercial Grade Water Filters & Systems 164 item
  5. Countertop Water Filter Systems 22 item
  6. Water Filter Pitchers & Dispensers 23 item
  7. Camping Water Filters & Systems 18 item
  8. Shower Water Filters & Filter Systems 39 item
  9. Household Filters 40 item
Brand
  1. 3M 7 item
  2. American Hydro Systems 1 item
  3. American Plumber 5 item
  4. Aqua Flo 3 item
  5. Aquapatrol 1 item
  6. Aqua-Pure 6 item
  7. Aries 6 item
  8. BevGuard 4 item
  9. Brondell 2 item
  10. Clairify 2 item
  11. Claris 1 item
  12. Crystal Quest 19 item
  13. Culligan 46 item
  14. Cuno 3 item
  15. Daewoo 1 item
  16. Desal 1 item
  17. Doulton 34 item
  18. DuPont 12 item
  19. Everpure 23 item
  20. Filtrete 5 item
  21. Flojet 1 item
  22. GE 10 item
  23. H2O International 1 item
  24. Halsey Taylor 1 item
  25. Harmsco 8 item
  26. Hoshizaki 1 item
  27. Hydrologic 14 item
  28. Hydronix 19 item
  29. Hydrotech 13 item
  30. Hytrex 9 item
  31. Ice-O-Matic 2 item
  32. Inline Water Filters 3 item
  33. Insinkerator 1 item
  34. Katadyn 6 item
  35. Klean Kanteen 4 item
  36. KX Matrikx 2 item
  37. Liquatec 1 item
  38. Manitowoc 3 item
  39. GE Merlin 4 item
  40. Microline 4 item
  41. OmniFilter 3 item
  42. Omnipure 85 item
  43. Pentair 2 item
  44. Pentek 107 item
  45. PetSafe 1 item
  46. Pioneer 2 item
  47. Pro Products 1 item
  48. PuROLine 1 item
  49. PuROTwist 5 item
  50. Purtrex 7 item
  51. QMP 1 item
  52. Rainshow'r 11 item
  53. Rusco 17 item
  54. Seychelle 2 item
  55. Sprite 13 item
  56. SteriPEN 1 item
  57. Tier1 127 item
  58. Viqua 44 item
  59. Water Factory Systems 2 item
  60. Watts 9 item
  61. Whirlpool 4 item
  62. ZeroWater 11 item
Primary Filter Media
  1. Activated Carbon Block 117 item
  2. Activated Carbon w Ion Exchange Resin 1 item
  3. Anion Resin 1 item
  4. Carbon Block 9 item
  5. Carbon Wrapped 11 item
  6. Carbon-Impregnated Fabric 1 item
  7. Cellulose 2 item
  8. Ceramic with Carbon 14 item
  9. Fine Mesh Pre-Resin Fluoride Removal Media 1 item
  10. Granular Activated Carbon 108 item
  11. Hexametaphosphate Crystals 1 item
  12. Ion Exchange Resin 22 item
  13. Nylon Monofilament 1 item
  14. Nylon Monofilament Mesh 4 item
  15. Permanganate Treated Zeolite 1 item
  16. Phosphate Crystal 3 item
  17. Pleated Fabric 5 item
  18. Pleated Polyester 10 item
  19. Polyester 12 item
  20. Polypropylene 77 item
  21. Scale Reduction media 7 item
  22. Semi-Permeable Membrane 18 item
  23. Sintered Ceramic 8 item
  24. Stainless Steel 7 item
Price
  1. $0.00 - $999.99 708 item
  2. $1,000.00 and above 15 item
Fitting Type
  1. Compression 3 item
  2. FNPT 18 item
  3. FPT 33 item
  4. GHT 2 item
  5. MNPT 3 item
  6. MPT 13 item
  7. NPT 50 item
  8. Push In 5 item
  9. Quick-Change 7 item
  10. Quick Connect 56 item
Fitting Size (inches)
  1. 1/8 inch 2 item
  2. 1/4 inch 83 item
  3. 3/8 inch 36 item
  4. 1/2 inch 11 item
  5. 3/4 inch 30 item
  6. 1 inch 17 item
  7. 1-1/16 inches 2 item
  8. 1-1/2 inches 12 item
  9. 2 inches 8 item
Advertised Size (in)
  1. 5 x 2-1/2 10 item
  2. 6 x 2-1/2 2 item
  3. 6 x 3 2 item
  4. 7 x 2 2 item
  5. 8 x 2-1/2 5 item
  6. 9-3/4 x 2-1/2 1 item
  7. 9-3/4 x 2-3/4 2 item
  8. 10 x 2 9 item
  9. 10 x 2-1/2 89 item
  10. 10 x 3-1/2 2 item
  11. 10 x 4-1/2 21 item
  12. 10 x 5 1 item
  13. 10-1/4 x 2-1/2 2 item
  14. 10-5/16 x 2-1/8 1 item
  15. 10-1/2 x 2-3/4 1 item
  16. 10-3/4 x 2-3/4 1 item
  17. 12 x 2-1/2 22 item
  18. 12-1/32 x 4-5/32 1 item
  19. 12 x 3-1/2 1 item
  20. 12-3/4 x 3 1 item
  21. 14 x 2-1/2 3 item
  22. 14 x 3-1/2 1 item
  23. 15 x 3-1/2 2 item
  24. 18 x 4 1 item
  25. 18-1/4 x 7-1/4 1 item
  26. 20 x 2-1/2 27 item
  27. 20 x 4-1/2 33 item
  28. 29 x 10 1 item
  29. 30 x 2-1/2 5 item
  30. 31-3/4 x 7-1/4 1 item
  31. 32 x 7 1 item
  32. 40 x 2-1/2 4 item
Micron Rating (Nominal)
  1. 0⋅1 4 item
  2. 0⋅2 4 item
  3. 0⋅3 1 item
  4. 0.5 76 item
  5. 1 67 item
  6. 3 2 item
  7. 5 120 item
  8. 10 32 item
  9. 15 2 item
  10. 20 10 item
  11. 25 24 item
  12. 30 13 item
  13. 40 1 item
  14. 50 12 item
  15. 75 1 item
  16. 100 5 item
  17. 200 2 item
  18. 254 1 item
  19. 400 1 item
  20. 800 1 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 8 item
  2. 2 months 19 item
  3. 3 months 42 item
  4. 4 months 5 item
  5. 5 months 3 item
  6. 6 months 244 item
  7. 9 months 3 item
  8. 12 months 131 item
  9. 24 months 21 item
  10. 36 months 2 item
  11. 48 months 1 item
  12. 60 months 1 item
  13. 120 months 7 item
Filter Life (gallons)
  1. 0 - 100 20 item
  2. 100 - 250 16 item
  3. 250 - 500 23 item
  4. 500 - 1,000 43 item
  5. 1,000 - 2,500 102 item
  6. 2,500 - 5,000 57 item
  7. 5,000 - 10,000 21 item
  8. 10,000 - 13,000 3 item
  9. 10,000 - 25,000 55 item
  10. 25,000 - 50,000 10 item
  11. 50,000 and up 9 item