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

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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 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    P5 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    Fits into most industry standard 10-inch water filtration system housings Learn More
    $3.99 MSRP:  $10.34
  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
  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
    $8.99 MSRP:  $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
    $36.99 MSRP:  $48.99
  5. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  6. 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 MSRP:  $9.99
  7. 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
  8. DUPONT-WFHD13001B

    DUPONT-WFHD13001B

    $62.99 MSRP:  $79.96
  9. DUPONT-WFHDC3001

    DUPONT-WFHDC3001

    $17.99 MSRP:  $27.04
  10. DUPONT-WFHDC8001

    DUPONT-WFHDC8001

    $25.99
  11. 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
  12. WFPFC8002 DuPont Universal Whole House Carbon Wrap Two-Phase Cartridge (2-pack)

    WFPFC8002 DuPont Universal Whole House Carbon Wrap Two-Phase Cartridge (2-Pack)

    Fits all DuPont Whole House Filter Systems Learn More
    $14.99 MSRP:  $19.99
  13. 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 MSRP:  $21.16
  14. FRSS-3.5 Sterilight 3.5 GPM 1/2-inch Flow Restrictor
  15. K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    Fits standard 3/8-inch copper and plastic water lines Learn More
    $14.29 MSRP:  $20.99
  16. 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 MSRP:  $14.99
  17. 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 MSRP:  $90.00
  18. 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 MSRP:  $28.99
  19. 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 MSRP:  $30.99
  20. 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
    $27.99 MSRP:  $37.99
  21. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  22. Viqua VT4-DWS11 Ultraviolet Filtration System
  23. HYDRONIX_SPC_25_1001_FILTER

    HYDRONIX_SPC_25_1001_FILTER

    As Low As $6.00 Per Filter

  24. PENTEK_EP_20BB_FILTER

    PENTEK_EP_20BB_FILTER

    As Low As $63.08 Per Filter

  25. PENTEK_EPM_20BB_FILTER

    PENTEK_EPM_20BB_FILTER

    As Low As $43.66 Per Filter

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