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

When we protect your filter purchase with our No Worries Guarantee, we mean it!

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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Water Filtration Systems, Filters, & Parts

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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Items 1 to 48 of 86 total

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  • Pentek PD-10-20 Whole House Replacement Sediment Water Filter
  • 158008 Pentek Slim Line Filter Housing - Clear

    158008 Pentek Slim Line Water Filter Housing - Clear

    $12.79
    MSRP: $16.55
    Save 23%
  • Pentek PD-25-20 Whole House Replacement Sediment Water Filter
  • S1-20 Pentek Whole House Filter Replacement Cartridge

    S1-20 Pentek Whole House Filter Replacement Cartridge

    $12.99 MSRP: $17.99
    Save 28%
  • Pentek ECP5-20 Replacement Water Filter Cartridge
  • SPC-45-1050 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • FPMB-BB20-10 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • 3WH-HDPL-F01 Filtrete Comparable Whole House Water Filter by Tier1
  • RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    $15.99 MSRP: $17.99
    Save 11%
  • PD-25-30 Pentek Whole House Replacement Sediment Filter Cartridge
  • R50-BB Pentek Whole House Water Filter

    R50-BB Pentek Whole House Filter Replacement Cartridge

    $17.99 MSRP: $21.34
    Save 16%
  • PD-5-40 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-5-40 Pentek Whole House Sediment Filter Cartridge

    $18.99
    MSRP: $24.34
    Save 22%
  • 158117 Pentek Slim Line Filter Housing - Clear

    158117 Pentek Slim Line Filter Housing - Clear

    $18.99
    MSRP: $24.14
    Save 21%
  • 158642 Pentek Slim Line Filter Housing - Blue

    158642 Pentek Slim Line Filter Housing - Blue

    $19.99
    MSRP: $25.29
    Save 21%
  • 3G-SLIM-38-NPT10 Pentek Whole House Slim 10 inch Filter Housing
  • S1-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • FXHSC GE Comparable Whole House Water Filter by Tier1

    FXHSC GE Comparable Whole House Water Filter by Tier1

    $15.99 MSRP: $17.99
    Save 11%
  • AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge
  • WHKF-WHSW Whirlpool Whole House Replacement Sediment Filter Cartridge (2-Pack)
  • PENTEK-SLIM-PR10-JG38 Pentek Undersink Filter 10 inch Housing
  • 3M Aqua-Pure AP110 Whole House Water Filter Cartridge

    3M Aqua-Pure AP110 Whole House Filter Replacement Cartridge

    $11.99
    MSRP: $18.14
    Save 34%
  • P1-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
  • P5-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
  • 3M Aqua-Pure AP124 Whole House Water Filter Cartridge

    AP124 3M Aqua-Pure Whole House Filter Replacement Cartridge

    $12.99
    MSRP: $17.24
    Save 25%
  • C8 Pentek Whole House Replacement Filter Cartridge
  • CW-F Pentek String Wound Sediment Water Filter (9-7/8 in x 2-1/4 in)
  • W5W American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • CFS110 Cuno Whole House Filter Replacement Cartridge

    CFS110 Cuno Whole House Filter Replacement Cartridge

    $14.99
    MSRP: $16.09
    Save 7%
  • C1 Pentek Undersink Filter Replacement Cartridge

    Pentek C1 Undersink Water Filter Replacement Cartridge

    $14.99
    MSRP: $19.99
    Save 25%
  • PD-5-30 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-5-30 Pentek Whole House Sediment Filter Cartridge

    $15.99
    MSRP: $16.55
    Save 3%
  • R50-BBSA-D Culligan Comparable Whole House Water Filter by Tier1
  • K00173 Manitowoc Tri-Liminator Replacement Ice Maker Pre-Filter Cartridge
  • TO1DS OmniFilter Whole House Replacement Filter Cartridge (2-Pack)
  • Pentek PS5-30C Polypropylene Sediment Filter
  • Hydronix SPC-25-1005 Pleated Water Filter
  • SPC-25-1020 Hydronix Comparable Pleated Sediment Water Filter by Tier1
  • Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

    $11.99 MSRP: $17.99
    Save 33%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • DGD-5005 Pentek Whole House Filter Replacement Cartridge by Tier1
  • TO1SS OmniFilter Whole House Water Filter
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • MAXETW-975 Watts Comparable C-MAX Replacement Water Filter Cartridge by Tier1
  • C1 Pentek Comparable Carbon Block Water Filter by Tier1

    C1 Pentek Comparable Carbon Block Water Filter by Tier1

    $12.99 MSRP: $18.99
    Save 32%
  • W5CIP American Plumber Whole House Carbon Water Filter by Tier1
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • SPC-25-1020 Hydronix Sediment Water Filter

Items 1 to 48 of 86 total

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