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

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 143 total

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  • PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • PD-1-40 Pentek Whole House Replacement Sediment Filter Cartridge
  • PD-25-30 Pentek Whole House Replacement Sediment Filter Cartridge
  • 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%
  • PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • ST-BC-4 Pentek Filter Housing - Stainless Steel

    ST-BC-4 Pentek Filter Housing - Stainless Steel

    $759.05
    MSRP: $1,009.11
    Save 25%
  • WP-5BB97P Pentek Replacement Filter Cartridge

    WP-5BB97P Pentek Replacement Filter Cartridge

    $18.99
    MSRP: $24.99
    Save 24%
  • WP1BB97P Pentek Replacement Filter Cartridge
  • WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    $34.99
    MSRP: $42.54
    Save 18%
  • WPX100BB20P Pentek Replacement Filter Cartridge
  • WPX100BB97P Pentek Replacement Filter Cartridge

    WPX100BB97P Pentek Replacement Filter Cartridge

    $18.99
    MSRP: $24.14
    Save 21%
  • WPX50BB97P Pentek Replacement Filter Cartridge

    WPX50BB97P Pentek Replacement Filter Cartridge

    $19.99
    MSRP: $24.14
    Save 17%
  • WS-20 Pentek Water Softening Filter

    WS-20 Pentek Water Softening Filter

    $26.99
    MSRP: $35.64
    Save 24%
  • PENTEK-153017

    PENTEK-153017

    $11.29
    MSRP: $15.28
    Save 26%
  • PENTEK-153018

    PENTEK-153018

    $18.99
    MSRP: $21.84
    Save 13%
  • PENTEK-153070

    PENTEK-153070

    $51.99
    MSRP: $57.95
    Save 10%
  • PENTEK-153098

    PENTEK-153098

    $82.39
    MSRP: $97.05
    Save 15%
  • PENTEK-153128

    PENTEK-153128

    $19.99
    MSRP: $23.56
    Save 15%
  • PENTEK-154166

    PENTEK-154166

    $37.09
    MSRP: $44.95
    Save 17%
  • PENTEK-154167

    PENTEK-154167

    $37.09
    MSRP: $44.95
    Save 17%
  • PENTEK-158008

    PENTEK-158008

    $12.79
    MSRP: $16.55
    Save 23%
  • PENTEK-158117

    PENTEK-158117

    $18.99
  • PENTEK-CBC-20

    PENTEK-CBC-20

    $32.77
  • PENTEK-CBC20-BB

    PENTEK-CBC20-BB

    $114.17
  • PENTEK-ECP1-20

    PENTEK-ECP1-20

    $15.99
    MSRP: $17.70
    Save 10%
  • PENTEK-ECP50-20

    PENTEK-ECP50-20

    $14.99
    MSRP: $17.70
    Save 15%
  • Pentek ECP20-10 Replacement Water Filter Cartridge

    ECP20-10 Pentek Replacement Filter Cartridge

    $8.59 MSRP: $9.42
    Save 9%
  • Pentek ECP5-20 Replacement Water Filter Cartridge
  • Pentek P25-20 Whole House Replacement Sediment Filter Cartridge
  • Pentek P25 Whole House Replacement Sediment Filter Cartridge
  • PCC212 Pentek Replacement Filter Cartridge

    PCC212 Pentek Replacement Filter Cartridge

    $20.99 MSRP: $22.41
    Save 6%
  • Pentek PD-10-20 Whole House Replacement Sediment Water Filter
  • Pentek PD-25-20 Whole House Replacement Sediment Water Filter
  • Pentek PS20-20C Whole House Replacement Sediment Water Filter
  • Pentek PS5-10C Whole House Replacement Sediment Water Filter Cartridge
  • Pentek PS5-20C Whole House Replacement Sediment Water Filter Cartridge
  • RFC20-BB Pentek Carbon Filter Replacement Cartridge

    RFC20-BB Pentek Replacement Filter Cartridge

    $51.49 MSRP: $61.51
    Save 16%
  • CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1

    CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1

    MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • CQE-RC-04036 Crystal Quest Carbon Block Water Filter Cartridge Comparable by Tier1
  • MATRIKX-CTO2-HD20 KX Technologies MatrikX Comparable Whole House Filter Replacement Cartridge by Tier1
  • C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • TFM-24 Desal Reverse Osmosis Membrane

    TFM-24 Desal Reverse Osmosis Membrane

    $24.99
    MSRP: $47.14
    Save 47%
  • 801-20 Harmsco Replacement Filter Cartridge

    801-20 Harmsco Replacement Filter Cartridge

    $7.99
    MSRP: $11.49
    Save 30%
  • PENTEK-CFBC-20

    PENTEK-CFBC-20

    $23.49
    MSRP: $29.31
    Save 20%
  • KO25G2S Pentek Polypropylene Bag Filter

    KO25G2S Pentek Polypropylene Bag Filters

    $6.05
    MSRP: $9.42
    Save 36%
  • KO25HE2 Pentek Polypropylene High Efficiency Bag Filter

    KO25HE2 Pentek Polypropylene High Efficiency Bag Filter

    $16.99
    MSRP: $19.34
    Save 12%
  • KO50G2S Pentek Polypropylene Bag Filter

    KO50G2S Pentek Polypropylene Bag Filter

    $6.19
    MSRP: $9.42
    Save 34%

Items 1 to 48 of 143 total

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