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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. 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
  2. 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
  3. 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
    $41.99 Retail Price:  $47.99
  4. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  5. RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 2.5-inch filter housings Learn More
    $4.99 Retail Price:  $9.99
  6. WFPF13003B DuPont Universal Whole House Filtration System

    WFPF13003B DuPont Universal Whole House Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
    $31.99 Retail Price:  $41.99
  7. WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System

    WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System

    Fits standard 10 inch by 4.5 inch filter cartridges Learn More
    $62.99 Retail Price:  $79.96
  8. WFHDC3001 DuPont Universal Heavy Duty Pleated Poly Whole House Cartridge

    WFHDC3001 DuPont Universal Heavy Duty Pleated Poly Whole House Cartridge

    Fits WFHD13001B Universal Heavy Duty Whole House Filtration System and other brands of 10x4.5-inch filter systems Learn More
    $17.99 Retail Price:  $27.04
  9. WFHDC8001 DuPont Universal Heavy Duty Carbon Wrap 2-Phase Cartridge

    WFHDC8001 DuPont Universal Heavy Duty Carbon Wrap 2-Phase Cartridge

    Fits WFHD13001B Universal Heavy Duty Whole House Filtration System and other brands of 10x4.5-inch filter systems Learn More
    $25.99 Retail Price:  $32.92
  10. WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
    $32.99 Retail Price:  $41.99
  11. WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)

    WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)

    Fits DuPont Whole House Filter Systems and most other brands of 10 x 2.5-inch systems Learn More
    $13.99 Retail Price:  $21.16
  12. FRSS-3.5 Sterilight 3.5 GPM 1/2-inch Flow Restrictor
  13. K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    Fits standard 3/8-inch copper and plastic water lines Learn More
    $12.99 Retail Price:  $17.99
  14. WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $10.99 Retail Price:  $14.99
  15. FRSS-3.5 Viqua 3.5 GPM 1/2-inch Flow Restrictor

    FRSS-3.5 Viqua 3.5 GPM 1/2-inch Flow Restrictor

    1/2 x 1/2 inch FNPT fitting Learn More
    $69.99 Retail Price:  $90.00
  16. 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
  17. 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
  18. 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
  19. P5-10 Tier1 Sediment Water Filter (4-pack)

    P5-10 Tier1 Sediment Water Filter (4-pack)

    Fits into most industry standard 10-inch water filtration system housings Learn More

    $17.99

  20. P5-10 Tier1 Sediment Water Filter (6-pack)

    P5-10 Tier1 Sediment Water Filter (6-pack)

    Fits into most industry standard 10-inch water filtration system housings Learn More

    $24.99

  21. P5-10 Tier1 Sediment Water Filter (12-pack)

    P5-10 Tier1 Sediment Water Filter (12-pack)

    Fits into most industry standard 10-inch water filtration system housings Learn More

    $40.99

  22. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 (4-Pack)

    Fits most standard 20 x 2.5-inch housings Learn More

    $54.99

  23. P1 Pentek Comparable Whole House Sediment Filter by Tier1 (2-Pack)

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More

    $10.99

  24. P1 Pentek Comparable Whole House Sediment Filter by Tier1 (4-Pack)

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1 (4-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More

    $19.99

  25. Viqua VT4-DWS11 Ultraviolet Filtration System

    Viqua VT4-DWS11 Ultraviolet Filtration System

    $448.49 Retail Price:  $529.99

Items 1 to 25 of 136 total

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