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!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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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  • W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • CP5-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge
  • HD-950 Culligan Whole House Filter System

    HD-950 Culligan Whole House Water Filter System

    $49.99
    MSRP: $75.89
    Save 34%
  • HF-150 Culligan Whole House Filter System

    HF-150 Culligan Whole House Filter System

    $21.99
    MSRP: $26.44
    Save 17%
  • HF-360 Culligan Valve-In-Head Whole House Filter System

    HF-360 Culligan Valve-In-Head Whole House Filter System

    $35.99
    MSRP: $47.14
    Save 24%
  • RFC-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge
  • PENTEK-PD-1-20

    PENTEK-PD-1-20

    $9.99
    MSRP: $11.72
    Save 15%
  • PENTEK-PD-1-40

    PENTEK-PD-1-40

    $21.99
  • PENTEK-PD-25-30

    PENTEK-PD-25-30

    $16.99
  • 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
  • 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-153126

    PENTEK-153126

    $13.39
    MSRP: $17.70
    Save 24%
  • PENTEK-153128

    PENTEK-153128

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

    PENTEK-154166

    $37.09
    MSRP: $44.95
    Save 17%
  • 154167 Pentek Filter Housing Cap with Pressure Relief Button - Black
  • PENTEK-CBC-20

    PENTEK-CBC-20

    $32.77
  • CBC20-BB Pentek Replacement Filter Cartridge
  • 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%
  • CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    $42.99
    MSRP: $60.59
    Save 29%
  • CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    $25.99
    MSRP: $32.77
    Save 21%
  • TIER1-CBC-20BB

    TIER1-CBC-20BB

    $57.99
    MSRP: $136.99
    Save 58%
  • SCWH-5 WTR Culligan Water Filter Cartridge

    SCWH-5 WTR Culligan Water Filter Cartridge

    $9.99
    MSRP: $10.99
    Save 9%
  • 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

    $17.49 MSRP: $22.41
    Save 22%
  • 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

    $57.99 MSRP: $82.91
    Save 30%
  • SDC-45-2005 Hydronix Whole House Filter Replacement by Tier1

    SDC-45-2005 Hydronix Whole House Filter Replacement by Tier1

    $21.99 MSRP: $27.59
    Save 20%
  • 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%

Items 1 to 48 of 313 total

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