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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. P5-10 Tier1 Sediment Water Filter

    P5-10 Tier1 Sediment Water Filter

    Fits into most industry standard 10-inch water filtration system housings Learn More
    $4.99 Retail Price:  $7.34
  2. 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $4.99
  3. FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1

    FXUSC GE Comparable Whole House Sediment Water Filter by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $9.99 Retail Price:  $12.34
  4. EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    Fits most standard 20 x 4.5-inch housings Learn More
    $43.99 Retail Price:  $47.99
  5. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  6. Pentek 158599 Clear 3G Slim Line Filter Housing

    Pentek 158599 Clear 3G Slim Line Filter Housing

    Receives any standard 10 inch by 2.5 inch filter cartridge Learn More
    $22.99 Retail Price:  $28.99
  7. Pentek 158637 Clear 3G Slim Line Filter Housing with Pressure Relief

    Pentek 158637 Clear 3G Slim Line Filter Housing with Pressure Relief

    Receives any standard 10 inch by 2.5 inch filter cartridge Learn More
    $23.99 Retail Price:  $30.99
  8. Pentek 158214 Clear Traditional Slim Line Filter Housing

    Pentek 158214 Clear Traditional Slim Line Filter Housing

    Receives any standard 10 inch by 2.5 inch filter cartridge Learn More
    $29.99 Retail Price:  $37.99
  9. Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    Standard 10 inch x 4.5 inch size fits many common whole house filter housings Learn More
    $23.99 Retail Price:  $25.29
  10. W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)

    W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)

    Fits American Plumber W38-PR and most standard size water filter housings Learn More
    $21.99 Retail Price:  $24.34
  11. WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $36.99 Retail Price:  $40.24
  12. WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other heavy duty water filter housings Learn More
    $71.99 Retail Price:  $78.19
  13. 801-20 Harmsco Replacement Filter Cartridge

    801-20 Harmsco Replacement Filter Cartridge

    Fits any industry standard housing that accepts 2.5-inch by 10-inch replacement filters Learn More
    $7.99 Retail Price:  $11.49
  14. CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $14.99 Retail Price:  $17.34
  15. EPM-20BB Pentek Whole House Filter Replacement Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More
    $44.99 Retail Price:  $54.04
  16. FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $63.99 Retail Price:  $80.49
  17. GAC20-BB Pentek Whole House Filter Replacement Cartridge

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    Fits any heavy duty housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $45.99 Retail Price:  $56.80
  18. NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $9.99 Retail Price:  $11.95
  19. PCC218 Pentek Replacement Filter Cartridge

    PCC218 Pentek Replacement Filter Cartridge

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $24.99 Retail Price:  $26.44
  20. RFC20-BB Pentek Replacement Filter Cartridge

    RFC20-BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $56.99 Retail Price:  $61.51
  21. SLIM-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  22. SLIM-38-PR5 Pentek Whole House Slim 5 inch Filter Housing
  23. SLIM-CLEAR-14-WPR5 Pentek Whole House Slim 5 inch Filter Housing
  24. 158110 Pentek Filter Housing - Clear

    158110 Pentek Filter Housing - Clear

    Fits standard 3/8-inch water lines Learn More
    $18.99 Retail Price:  $22.41
  25. CBC20-BB Pentek Replacement Filter Cartridge

    CBC20-BB Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $72.99 Retail Price:  $92.34

Items 1 to 25 of 33 total

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