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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. CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  2. CBC-10 Pentek Replacement Filter Cartridge

    CBC-10 Pentek Replacement Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $15.99 Retail Price:  $18.34
  3. KO25HE2 Pentek Polypropylene High Efficiency Bag Filter

    KO25HE2 Pentek Polypropylene High Efficiency Bag Filter

    Fits Pentek Carbon Steel, Stainless Steel and Aluminum Housings that accept #2 filter bags. Learn More
    $16.99 Retail Price:  $19.34
  4. P25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    P25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept standard 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $13.34
  5. PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $11.72
  6. PD-1-40 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-1-40 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 40-inch x 2.5-inch water filter cartridges Learn More
    $18.99 Retail Price:  $20.00
  7. PD-10-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-10-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $12.99 Retail Price:  $15.34
  8. PD-25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $12.99
  9. PD-25-30 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-25-30 Pentek Whole House Replacement Sediment Filter

    Fits most water filtration system housings that accept 30-inch x 2.5-inch cartridges Learn More
    $16.99
  10. PD-5-30 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-5-30 Pentek Whole House Sediment Filter Cartridge

    Fits most standard filtration system housings that accept 30-inch x 2.5-inch water filter cartridges Learn More
    $15.99 Retail Price:  $16.55
  11. PD-5-40 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-5-40 Pentek Whole House Sediment Filter Cartridge

    Fits most standard filtration system housings that accept 40-inch x 2.5-inch water filter cartridges Learn More
    $18.99 Retail Price:  $24.34
  12. PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $12.98
  13. PS20-20C Pentek Whole House Replacement Sediment Filter Cartridge

    PS20-20C Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $13.34
  14. R30-20 Pentek Replacement Filter Cartridge

    R30-20 Pentek Replacement Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $16.99 Retail Price:  $18.85
  15. TS-101L Pentek Lime/Scale Inline Filter

    TS-101L Pentek Lime/Scale Inline Filter

    Fits standard 1/4-inch water lines Learn More
    $11.99 Retail Price:  $15.28
  16. WP-5BB97P Pentek Replacement Filter Cartridge

    WP-5BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $19.99
  17. WP1BB97P Pentek Replacement Filter Cartridge

    WP1BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $18.99
  18. WP5BB97P Pentek Replacement Filter Cartridge

    WP5BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $19.99
  19. WPX100BB97P Pentek Replacement Filter Cartridge

    WPX100BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $19.99 Retail Price:  $24.14
  20. LF-BLR Tier1 Long-Reach Faucet - Chrome

    LF-BLR Tier1 Long-Reach Faucet - Chrome

    Fits many different brands of reverse osmosis systems, including Pentek and Culligan Learn More
    $17.99 Retail Price:  $26.32
  21. LF-BLRAG Tier1 Long-Reach Air-Gap Faucet - Chrome

    LF-BLRAG Tier1 Long-Reach Air-Gap Faucet - Chrome

    Fits many different brands of reverse osmosis systems, including Pentek and Culligan Learn More
    $18.99 Retail Price:  $34.72
  22. 153017 Pentek Slim Line Filter Housing Sump - Blue

    153017 Pentek Slim Line Filter Housing Sump - Blue

    Fits the cap of SY-5197 10-inch Slim Line Housings, as well as other countertop and undersink systems Learn More
    $11.29 Retail Price:  $15.28
  23. 153018 Pentek Slim Line Filter Housing Sump - Clear

    153018 Pentek Slim Line Filter Housing Sump - Clear

    Fits the cap of CSL-CI and CSL-C1 10-inch Slim Line Clear Housings Learn More
    $18.99 Retail Price:  $21.84
  24. 153128 Pentek Filter Housing Sump - Clear

    153128 Pentek Filter Housing Sump - Clear

    Fits the cap of the Culligan HF-360 and HF-160 clear standard housing Learn More
    $19.99 Retail Price:  $23.56
  25. 158008 Pentek Slim Line Filter Housing - Clear

    158008 Pentek Slim Line Water Filter Housing - Clear

    Fits standard 3/8-inch water lines Learn More
    $12.79 Retail Price:  $16.55

Items 1 to 25 of 40 total

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