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 314 total

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  • 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%
  • SB-2R Water Bottle Replacement Filters (2-Pack)

    SB-2R Water Bottle Replacement Filters (2-Pack)

    $7.99
    MSRP: $11.49
    Save 30%
  • 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • AP110 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • TIER1-AP85-934

    TIER1-AP85-934

    $18.99
  • CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1
  • CW-50 Pentek 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
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • D-25 Culligan Under Sink Water Filter
  • Culligan R50_BBSA_D Sediment Whole House 6-Pack Water Filters
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • PENTEK_DGD_7525_20_FILTER

    PENTEK_DGD_7525_20_FILTER

    $27.99
  • PENTEK_ECP1_10_FILTER

    PENTEK_ECP1_10_FILTER

    $11.99 MSRP: $17.99
    Save 33%
  • PENTEK_ECP1_20BB_FILTER

    PENTEK_ECP1_20BB_FILTER

    $26.99 MSRP: $33.99
    Save 21%
  • PENTEK_ECP1_BB_FILTER

    PENTEK_ECP1_BB_FILTER

    $15.99 MSRP: $17.12
    Save 7%
  • PENTEK_ECP20_20_FILTER

    PENTEK_ECP20_20_FILTER

    $15.99 MSRP: $21.99
    Save 27%
  • PENTEK_ECP20_20BB_FILTER

    PENTEK_ECP20_20BB_FILTER

    $24.99 MSRP: $28.39
    Save 12%
  • PENTEK_ECP20_BB_FILTER

    PENTEK_ECP20_BB_FILTER

    $15.99 MSRP: $17.70
    Save 10%
  • PENTEK_ECP50_20BB_FILTER

    PENTEK_ECP50_20BB_FILTER

    $24.99 MSRP: $31.99
    Save 22%
  • PENTEK_EP_10_FILTER

    PENTEK_EP_10_FILTER

    $11.99 MSRP: $15.34
    Save 22%
  • PENTEK_EP_20_FILTER

    PENTEK_EP_20_FILTER

    $17.99 MSRP: $20.00
    Save 10%
  • PENTEK_EP_20BB_FILTER

    PENTEK_EP_20BB_FILTER

    $69.77
  • PENTEK_EP_BB_FILTER

    PENTEK_EP_BB_FILTER

    $27.99 MSRP: $32.32
    Save 13%
  • PENTEK_EPM_BB_FILTER

    PENTEK_EPM_BB_FILTER

    $26.99 MSRP: $34.49
    Save 22%
  • TIER1_EP5_10_FILTER

    TIER1_EP5_10_FILTER

    $8.49 MSRP: $11.49
    Save 26%
  • TIER1_P5_20_FILTER

    TIER1_P5_20_FILTER

    $4.99 MSRP: $9.19
    Save 46%
  • TIER1_P5_20BB_FILTER

    TIER1_P5_20BB_FILTER

    $20.99 MSRP: $25.76
    Save 19%
  • Pentek R30-20 Replacement Water Filter Cartridge

    R30-20 Pentek Replacement Filter Cartridge

    $17.99 MSRP: $24.99
    Save 28%
  • PENTEK_WP5BB97P_FILTER

    PENTEK_WP5BB97P_FILTER

    $20.99
  • PENTEK_WS_10_FILTER

    PENTEK_WS_10_FILTER

    $19.99 MSRP: $24.83
    Save 19%
  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    $5.99 MSRP: $9.99
    Save 40%
  • TIER1_EP5_10BB_FILTER

    TIER1_EP5_10BB_FILTER

    $22.99 MSRP: $26.34
    Save 13%
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1 (4-Pack)
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1 (25-Pack)
  • PENTEK_C1_20_FILTER

    PENTEK_C1_20_FILTER

    $16.99 MSRP: $20.00
    Save 15%
  • PENTEK_CBC_10_FILTER

    PENTEK_CBC_10_FILTER

    $16.92

Items 1 to 48 of 314 total

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