Discount Water Filters and Air Filters at Discount Filter Store.com

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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Water Filtration Systems & 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.

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  1. FC-600L PUR Flavor Options Flavor Options Replacement Cartridge

    FC-600L PUR Flavor Options Flavor Options Replacement Cartridge

    Fits only PUR Flavor Options Pitchers and Faucets Learn More
  2. FC-600S PUR Flavor Options Flavor Options Replacement Cartridge

    FC-600S PUR Flavor Options Flavor Options Replacement Cartridge

    Fits only PUR Flavor Options Pitchers and Faucets Learn More
  3. KPPA Klean Kanteen Sippy-Top Bottle Adapter
  4. KBINER3 Klean Kanteen S-Biner #3 Stainless Steel S Shaped Carabiner
  5. KPPF Klean Kanteen Flat Cap

    KPPF Klean Kanteen Flat Cap

    Fits all Klean Kanteen bottle sizes Learn More
  6. KPPS Klean Kanteen Sport Cap

    KPPS Klean Kanteen Sport Cap

    Fits all Klean Kanteen bottle sizes Learn More
  7. KBINER4 Klean Kanteen S-Biner #4 Stainless Steel S Shaped Carabiner
  8. Funbottle-dfs-green Tier1 Water Bottle - Green
  9. KPPS Klean Kanteen Sport Cap 2.0

    KPPS Klean Kanteen Sport Cap 2.0

    Fits all Klean Kanteen bottle sizes Learn More
  10. KSSF Klean Kanteen Stainless Steel Flat Cap

    KSSF Klean Kanteen Stainless Steel Flat Cap

    Fits all Klean Kanteen bottle sizes Learn More
  11. KSSL Klean Kanteen Stainless Steel Loop Cap

    KSSL Klean Kanteen Stainless Steel Loop Cap

    Fits all Klean Kanteen bottle sizes Learn More
  12. KPPL Klean Kanteen Loop Cap

    KPPL Klean Kanteen Loop Cap

    Fits all Klean Kanteen bottle sizes Learn More
    $6.99
  13. 8014399 Katadyn Quick Fill Hydration Pack Adapter
  14. KWPPC Klean Kanteen Cafe Cap

    KWPPC Klean Kanteen Cafe Cap

    Fits all Klean Kanteen wide and insulated bottle sizes Learn More
    $8.29 MSRP:  $11.99
  15. BBY-1TT-BLU Built NY Thirsty Bottle Tote - Blue
  16. 57-1423 Nubo Bottle Filtered Water Bottle
  17. Brita Water Purifier Bottle Replacement Filter (2-Pack)
  18. P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    Sized 4 7/8 x 2 1/2 inches Learn More

    Regular Price: $4.99

    Special Price: $2.05

  19. P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    Sized 4 7/8 x 2 1/2 inches Learn More

    Regular Price: $3.99

    Special Price: $2.55

  20. PX05-4-78 Purtrex Replacement Filter Cartridge

    PX05-4-78 Purtrex Replacement Water Filter Cartridge

    For use in filtration system housings that accept 2.5-inch x 5-inch replacement filters Learn More
    $2.99 MSRP:  $5.74
  21. W2160901 Doulton Candle Mount O-ring

    W2160901 Doulton Ceramic Water Filter Candle O-Ring

    Fits all Doulton short mount ceramic water filter candles Learn More
    $3.99 MSRP:  $5.74
  22. PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge

    PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $3.99 MSRP:  $5.28
  23. FPMB20-978 Watts Flo-Pro Replacement Filter Cartridge

    FPMB20-978 Watts Flo-Pro Replacement Water Filter

    Fits most standard water filtration system housings that use a 9 7/8-inch x 2 1/2-inch filter Learn More
    $3.99 MSRP:  $5.16
  24. AP1001 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1

    AP1001 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  25. AP-GRMB-01PP-10UB 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1

    AP-GRMB-01PP-10UB 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

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