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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.

Items 1 to 48 of 109 total

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  • P195BN Cuno Water Filter Cartridge

    P195BN 3M Cuno Water Filter Cartridge

    $176.99 Retail Price:  $237.99
  • CHLORPLUS-10 Pentek Whole House Filter Replacement Cartridge (12-Pack)
  • CW-MF Pentek Whole House Filter Replacement Cartridge (30-Pack)
  • PENTEK_CW_MF_6_PACK

    PENTEK_CW_MF_6_PACK

    $40.99

  • ECP5-BB Pentek Whole House Filter Replacement Cartridge (12-Pack)
  • PENTEK_ECP5_BB_20_PACK

    PENTEK_ECP5_BB_20_PACK

    $254.99

  • P5-20 Pentek Whole House Filter Replacement Cartridge (12-Pack)
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek CW-MF Whole House Water Filter Replacement Cartridge

    CW-MF Pentek Whole House Filter Replacement Cartridge

    As Low As $5.60 Per Filter

  • ECP5-BB Pentek Whole House Water Filter

    ECP5-BB Pentek Whole House Filter Replacement Cartridge

    As Low As $10.20 Per Filter

  • Pentek ECP50-BB Whole House Water Filter Replacement Cartridge
  • EPM-20 Pentek Whole House Water Filter

    EPM-20 Pentek Whole House Filter Replacement Cartridge

    As Low As $12.00 Per Filter

  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    NCP-20 Pentek Whole House Filter Replacement Cartridge

    As Low As $13.00 Per Filter

  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    As Low As $32.00 Per Filter

  • Pentek P1-20 Whole House Water Filter Replacement Cartridge

    P1-20 Pentek Whole House Filter Replacement Cartridge

    As Low As $9.75 Per Filter

  • Pentek P1 Polyproplyene Water Filter (10 x 2 1/2)

    P1 Pentek Whole House Filter Replacement Cartridge

    As Low As $5.60 Per Filter

  • Pentek S1 Pleated Whole House Sediment Filter
  • Pentek WP5BB97P Replacement Water Filter Cartridge

    WP5BB97P Pentek Replacement Filter Cartridge

    As Low As $17.50 Per Filter

  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    As Low As $4.56 Per Filter

  • Pentek S1-BB Replacement Water Filter Cartridge

    S1-BB Pentek Replacement Filter Cartridge

    As Low As $5.40 Per Filter

  • EP-5 Pentek Replacement Filter Cartridge
  • Cuno HF90-S Replacement Filter Cartridge

    Cuno HF90-S Replacement Filter Cartridge

    $185.99 Retail Price:  $243.79
  • DW-200-R American Plumber Undersink Filter Replacement Cartridge
  • W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • AMERICAN-PLUMBER-W30PE

    AMERICAN-PLUMBER-W30PE

    $16.99 Retail Price:  $18.04
  • AMERICAN-PLUMBER-W50PE

    AMERICAN-PLUMBER-W50PE

    $16.99 Retail Price:  $18.39
  • AMERICAN-PLUMBER-W50W

    AMERICAN-PLUMBER-W50W

    $13.99
  • AMERICAN-PLUMBER-W5CIP

    AMERICAN-PLUMBER-W5CIP

    $21.99
  • AMERICAN-PLUMBER-W5P

    AMERICAN-PLUMBER-W5P

    $12.99 Retail Price:  $13.79
  • W5W American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • AMERICAN-PLUMBER-WPD-110
  • AMERICAN-PLUMBER-WRC25HD

    AMERICAN-PLUMBER-WRC25HD

    $35.99 Retail Price:  $39.99
  • WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • 3M Aqua-Pure AP124-3 Water Filter

    AP124-3 3M Aqua-Pure Replacement Water Filter

    $29.99 Retail Price:  $35.64
  • 3M Aqua-Pure AP430SS Water Heater Scale Inhibitor

    AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

    $70.99 Retail Price:  $90.84
  • AQUA-PURE-AP903

    AQUA-PURE-AP903

    $239.99 Retail Price:  $342.69
  • AQUA-PURE-AP910R

    AQUA-PURE-AP910R

    $118.99 Retail Price:  $128.79
  • 3M Aqua-Pure AP917R Water Filter Cartridge
  • CFS01S Cuno Whole House Filter Housing

    CFS01S Cuno Whole House Water Filter Housing

    $132.05 Retail Price:  $152.94
  • CUNO-CFS02S

    CUNO-CFS02S

    $184.49 Retail Price:  $214.46
  • CFS110 Cuno Whole House Filter Replacement Cartridge

    CFS110 Cuno Whole House Filter Replacement Cartridge

    $14.99 Retail Price:  $16.09
  • CFS117-S Cuno Whole House Filter Replacement Cartridge

    CFS117-S Cuno Whole House Filter Replacement Cartridge

    $32.05 Retail Price:  $40.24
  • CFS11S Cuno Whole House Filter Housing

    CFS11S Cuno Whole House Filter Housing

    $95.99 Retail Price:  $101.19
  • CFS22 Cuno Whole House Filter Housing

    CFS22 Cuno Whole House Filter Housing

    $128.99 Retail Price:  $148.34
  • CFS517 Cuno Whole House Filter Replacement Cartridge

    CFS517 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $76.99

    Special Price: $62.05

  • CFS8110 Cuno Whole House Filter Replacement Cartridge

    CFS8110 Cuno Whole House Filter Replacement Cartridge

    $56.99 Retail Price:  $61.97
  • CFS8112 Cuno Whole House Filter Replacement Cartridge

    CFS8112 Cuno Whole House Filter Replacement Cartridge

    $63.05 Retail Price:  $69.56

Items 1 to 48 of 109 total

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