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

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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 303 total

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  • Funbottle-dfs-green Tier1 Water Bottle - Green

    EcoFriendly Water Bottle: Green FunBottle

    $4.29
    MSRP: $12.99
    Save 67%
  • 54846 Tier1 Reverse Osmosis Tank Pressure Gauge

    54846 Tier1 Reverse Osmosis Tank Pressure Gauge

    $8.99
    MSRP: $12.64
    Save 29%
  • 6570090 Tier1 Plastic Tank Ball Valve
  • 6570590 Tier1 Plastic Tank Ball Valve

    6570590 Tier1 Plastic Tank Ball Valve

    $6.99
    MSRP: $10.34
    Save 32%
  • FU-WDF-103-B Tier1 Long-Reach Black Faucet FCT-LR-B - Black
  • FU-WDF-103-W Tier1 Long-Reach Faucet - White
  • KDF55-20 Tier1 Replacement Filter Cartridge

    KDF55-20 Tier1 Replacement Filter Cartridge

    $87.99
    MSRP: $93.34
    Save 6%
  • LF-BLR Tier1 Long-Reach Faucet - Chrome

    LF-BLR Tier1 Long-Reach Faucet - Chrome

    $17.99
    MSRP: $26.32
    Save 32%
  • LF-BLR-BN Tier1 Long-Reach Faucet - Brushed Nickel

    LF-BLR-BN Tier1 Long-Reach Faucet - Brushed Nickel

    $29.99
    MSRP: $36.79
    Save 18%
  • LF-BLRAG Tier1 Long-Reach Air-Gap Faucet - Chrome

    LF-BLRAG Tier1 Long-Reach Air-Gap Faucet - Chrome

    $18.99
    MSRP: $34.72
    Save 45%
  • LF-BLRAG-BN Tier1 Low Lead Air Gap Faucet - Brushed Nickel

    LF-BLRAG-BN Tier1 Low Lead Air Gap Faucet - Brushed Nickel

    $32.99
    MSRP: $42.84
    Save 23%
  • LF-EC25-BN Tier1 Contemporary Ceramic Faucet - Brushed Nickel
  • LF-EC25-CP Tier1 Contemporary Ceramic Faucet - Chrome

    LF-EC25-CP Tier1 Contemporary Ceramic Faucet - Chrome

    $30.99
    MSRP: $51.74
    Save 40%
  • LF-EC25-SN Tier1 Contemporary Ceramic Faucet - Satin Nickel
  • LF-EC32-CP Tier1 Classic Ceramic Faucet - Chrome
  • RC540T50-T Tier1 Countertop Reverse Osmosis Filter System
  • SED-100DM Tier1 Metered Sediment Reduction Backwash Water Filter System
  • TFM-18-A Tier1 Reverse Osmosis Membrane

    TFM-18-A Tier1 Reverse Osmosis Membrane

    $35.99
    MSRP: $45.99
    Save 22%
  • TFM-36-A Tier1 Reverse Osmosis Membrane

    TFM-36-A Tier1 Reverse Osmosis Membrane

    $36.99
    MSRP: $49.99
    Save 26%
  • TFM-50-A Tier1 Reverse Osmosis Membrane

    TFM-50-A Tier1 Reverse Osmosis Membrane

    $45.99
    MSRP: $55.19
    Save 17%
  • TPG-100 Tier1 Reverse Osmosis Tank Pressure Gauge
  • IC6-38Q Tier1 Inline Water Filter

    IC6-38Q Tier1 Inline Water Filter

    $8.99
    MSRP: $16.99
    Save 47%
  • P50-20 Tier1 Polypropylene Sediment Water Filter Cartridge
  • CBC-10BB-WF Tier1 Water Filter Cartridge

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

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

    CBC-20 Tier1 Water Filter Cartridge

    $25.99
    MSRP: $32.77
    Save 21%
  • CBC-20BB-WF Tier1 Water Filter Cartridge

    FLOPLUS 20BB Comparable Water Filter Cartridge by Tier1

    $68.99
    MSRP: $84.99
    Save 19%
  • CTW-10-WF Tier1 Countertop Water Filter System
  • IC6-14Q Tier1 Inline Water Filter

    Tier1 Coconut Shell Carbon Inline Water Filter

    $6.99
    MSRP: $10.34
    Save 32%
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99
    MSRP: $27.34
    Save 12%
  • KDF55-10BB Tier1 Water Filter
  • KDF85-10BB Tier1 Water Filter

    KDF85-10BB Tier1 Water Filter

    $81.99
    MSRP: $86.24
    Save 5%
  • KDF85-20 Tier1 Water Filter

    KDF85-20 Tier1 Water Filter

    $102.99
    MSRP: $121.89
    Save 16%
  • KDF-SHF Tier1 Shower Filter

    KDF-SHF Tier1 Shower Filter

    $29.99
    MSRP: $36.79
    Save 18%
  • P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    $3.99
    MSRP: $5.74
    Save 30%
  • P1-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    $4.99
    MSRP: $8.34
    Save 40%
  • RO-1070-W14 Reverse Osmosis Bladder Tank - 14 Gallon

    RO-1070-W14 Reverse Osmosis Bladder Tank - 14 Gallon

    $136.99
    MSRP: $159.84
    Save 14%
  • 5-Stage Reverse Osmosis System by Tier1

    5-Stage Reverse Osmosis System by Tier1

    $159.99
    MSRP: $249.99
    Save 36%
  • WHKF-DWHB Whirlpool Comparable Whole House Sediment Water Filter by Tier1
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    $12.99
    MSRP: $17.99
    Save 28%
  • 155016-43 Pentek Comparable Whole House Water Filter by Tier1
  • S1-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • NCP-BB Pentek Comparable Whole House Carbon Filter by Tier1
  • TIER1-DGD1-20BB Whole House Sediment Water Filter
  • OB03 Brita Comparable Pitcher Replacement Cartridges by Tier1 (6-Pack)
  • R30-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

Items 1 to 48 of 303 total

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