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

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  • Our products are price match guaranteed!
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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 269 total

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  • 3M Aqua-Pure AP101T Whole House Water Filter

    AP101T 3M Aqua-Pure Whole House Water Filtration System

    $103.99
    MSRP: $137.99
    Save 25%
  • 3M Aqua-Pure AP430SS Water Heater Scale Inhibitor

    AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

    $70.99
    MSRP: $90.84
    Save 22%
  • CB6 OmniFilter Whole House Filter Replacement Cartridge
  • HF8-S Cuno Whole House Filter Replacement Cartridge
  • HF95-S Cuno Whole House Water Filter Cartridge

    HF95-S Cuno Whole House Water Filter Cartridge

    $195.99
    MSRP: $227.69
    Save 14%
  • W9381105 Doulton RIO 2000 Ceramic Multi-Candle Filter Cartridge
  • CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    $48.99
    MSRP: $58.99
    Save 17%
  • 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
  • VIH-34-PR10 Pentek Whole House Valve-in-Head 10 inch Filter Housing
  • SED-100DM Tier1 Metered Sediment Reduction Backwash Water Filter System
  • FPIR-BB-20 Watts Whole House Replacement Filter Cartridge
  • FPMB-BB20-10 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • FPMB20-20 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • FPMB5-20 Watts Flo-Pro Replacement Filter Cartridge

    FPMB5-20 Watts Flo-Pro Water Filter Cartridge

    $5.99
    MSRP: $6.89
    Save 13%
  • MATRIKX-1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • MATRIKX-CR1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • KX-MATRIKX-CTO2-HD20

    KX-MATRIKX-CTO2-HD20

    $68.99
  • MATRIKX-Pb1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • U25 OmniFilter Whole House Water Filter System

    OmniFilter U25 Whole House Water Filtration System

    $48.99
    MSRP: $58.64
    Save 16%
  • U30 OmniFilter Whole House Water Filter System

    U30 OmniFilter Whole House Water Filtration System

    $68.99
    MSRP: $81.64
    Save 15%
  • PENTEK-150166

    PENTEK-150166

    $46.99
    MSRP: $56.34
    Save 17%
  • PENTEK-158008

    PENTEK-158008

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

    PENTEK-158117

    $18.99
  • PENTEK-158642

    PENTEK-158642

    $19.99
  • PENTEK-158643

    PENTEK-158643

    $24.99
    MSRP: $25.98
    Save 4%
  • PENTEK-3G-SLIM-38-NPT10

    PENTEK-3G-SLIM-38-NPT10

    $19.99
  • PENTEK-158129

    PENTEK-158129

    $29.99
  • HYDRONIX-SDC-25-2001

    HYDRONIX-SDC-25-2001

    $6.99
  • 3M Aqua-Pure AP11T Whole House Water Filter

    AP11T 3M Aqua-Pure Whole House Water Filtration System

    $79.99
    MSRP: $94.29
    Save 15%
  • SST1HA 3M Aqua-Pure Water Filter System Housing
  • FXB20RFL Filtrex Green Radial Flow Water Filter Cartridges
  • P50-20 Tier1 Polypropylene Sediment Water Filter Cartridge
  • Pentek PD-1-30 Polypropylene Sediment Filter
  • TIER1-NCP10-934

    TIER1-NCP10-934

    $28.99
  • 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 Whole House Replacement Sediment Filter Cartridge
  • P5-20 Pentek Whole House Filter Replacement Cartridge

    P5-20 Pentek Whole House Filter Replacement Cartridge

    $6.19 MSRP: $9.42
    Save 34%
  • P5 Pentek Whole House Replacement Sediment Filter Cartridge
  • Pentek PD-10-20 Whole House Replacement Sediment Water Filter
  • Pentek PD-25-20 Whole House Replacement Sediment Water Filter
  • Pentek PD-5-20 Whole House Water Filter Replacement Cartridge

    PD-5-20 Pentek Whole House Filter Replacement Cartridge

    $9.99 MSRP: $12.98
    Save 23%
  • Pentek PS20-20C Whole House Replacement Sediment Water Filter
  • Pentek PS5-10C Whole House Replacement Sediment Water Filter Cartridge

Items 1 to 48 of 269 total

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