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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.

140 Products found

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  1. Q5533 Omnipure Undersink Replacement Water Filter

    Q5533 Omnipure Undersink Replacement Water Filter

    Price $21.99 List Price Price $31.99 Save 31%
  2. W9121200 Doulton/W9121207 British Berkefeld Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121200 Doulton/W9121207 British Berkefeld Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Price $32.99 List Price Price $47.99 Save 31%
  3. 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 List Price Price $1,636.99 Save 29%
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  4. 602805 Viqua Water Disinfection System UV Lamp

    602805 Viqua Water Disinfection System UV Lamp

    Price $122.00 List Price Price $173.99 Save 29%
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  5. 3MRO401-01 3M Under Sink Reverse Osmosis Water Filter System

    3MRO401-01 3M Under Sink Reverse Osmosis Water Filter System

    Price $573.99 List Price Price $819.99 Save 30%
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  6. 3MROP416-20A 3M Undersink Reverse Osmosis Replacement Filter Cartridge

    3MROP416-20A 3M Undersink Reverse Osmosis Replacement Filter Cartridge

    Price $45.99 List Price Price $65.99 Save 30%
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  7. 3MROP412-20A 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    3MROP412-20A 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    Price $48.99 List Price Price $69.99 Save 30%
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  8. 3MROP411-20A 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    3MROP411-20A 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    Price $34.99 List Price Price $49.99 Save 30%
  9. 3MROP316 3M Under Sink Reverse Osmosis Replacement Carbon Block Filter Cartridge

    3MROP316 3M Under Sink Reverse Osmosis Replacement Carbon Block Filter Cartridge

    Price $48.99 List Price Price $69.99 Save 30%
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  10. 3MROP310 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    3MROP310 3M Under Sink Reverse Osmosis Replacement Water Filter Cartridge

    Price $37.99 List Price Price $54.99 Save 30%
  11. 3MRO301 3M Under Sink Reverse Osmosis Water Filter System

    3MRO301 3M Under Sink Reverse Osmosis Water Filter System

    Price $510.99 List Price Price $729.99 Save 30%
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  12. FM-1500 Water Factory Systems Under Sink Drinking Water System

    FM-1500 Water Factory Systems Under Sink Drinking Water System

    Price $154.99 List Price Price $221.99 Save 30%
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140 Products found

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  1. Filter Life (months) 12 months
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Shopping Options
Category
  1. Undersink Water Filters & Systems 17 item
  2. Inline Water Filters 48 item
  3. Reverse Osmosis Water Filter Replacement Cartridges and Kits 15 item
  4. Commercial Grade Water Filters & Systems 38 item
  5. Countertop Water Filter Systems 3 item
  6. Camping Water Filters & Systems 3 item
  7. Shower Water Filters & Filter Systems 17 item
  8. Household Filters 3 item
Brand
  1. 3M 7 item
  2. Aqua-Pure 1 item
  3. BevGuard 5 item
  4. Brondell 1 item
  5. Crystal Quest 11 item
  6. Culligan 8 item
  7. Doulton 1 item
  8. Everpure 5 item
  9. Halsey Taylor 1 item
  10. Hydrologic 1 item
  11. Hydronix 6 item
  12. Hydrotech 2 item
  13. Omnipure 54 item
  14. Pentek 9 item
  15. PuROTwist 2 item
  16. Rainshow'r 3 item
  17. Rusco 2 item
  18. Sprite 5 item
  19. Tier1 10 item
  20. Viqua 9 item
  21. Water Factory Systems 1 item
  22. Whirlpool 1 item
Primary Filter Media
  1. Activated Carbon Block 31 item
  2. Carbon Block 1 item
  3. Ceramic with Carbon 1 item
  4. Granular Activated Carbon 46 item
  5. Ion Exchange Resin 3 item
  6. Polyester 2 item
  7. Polypropylene 13 item
  8. Scale Reduction media 1 item
Price
  1. $0.00 - $999.99 138 item
  2. $1,000.00 and above 3 item
Fitting Type
  1. FNPT 4 item
  2. FPT 11 item
  3. GHT 1 item
  4. MNPT 3 item
  5. MPT 2 item
  6. NPT 12 item
  7. Push In 1 item
  8. Quick-Change 1 item
  9. Quick Connect 23 item
Fitting Size (inches)
  1. 1/8 inch 1 item
  2. 1/4 inch 37 item
  3. 3/8 inch 12 item
  4. 3/4 inch 3 item
  5. 1-1/16 inches 1 item
  6. 1-1/2 inches 2 item
Advertised Size (in)
  1. 6 x 2-1/2 2 item
  2. 10 x 2 2 item
  3. 10 x 2-1/2 13 item
  4. 10 x 3-1/2 1 item
  5. 10 x 4-1/2 1 item
  6. 10-1/4 x 2-1/2 1 item
  7. 10-5/16 x 2-1/8 1 item
  8. 10-1/2 x 2-3/4 1 item
  9. 12 x 2-1/2 12 item
  10. 14 x 2-1/2 3 item
  11. 15 x 3-1/2 1 item
  12. 20 x 2-1/2 2 item
  13. 20 x 4-1/2 2 item
Micron Rating (Nominal)
  1. 0⋅2 1 item
  2. 0.5 8 item
  3. 1 31 item
  4. 5 32 item
  5. 10 5 item
  6. 15 1 item
  7. 20 1 item
  8. 25 2 item
  9. 100 1 item
Filter Life (gallons)
  1. 250 - 500 1 item
  2. 500 - 1,000 8 item
  3. 1,000 - 2,500 49 item
  4. 2,500 - 5,000 25 item
  5. 10,000 - 25,000 14 item
  6. 25,000 - 50,000 4 item
  7. 50,000 and up 1 item