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!

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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 56 total

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  • Harmsco BC4-1-T-EP Electropolish Band Clamp Filter Housing
  • HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    $13.99
    MSRP: $19.99
    Save 30%
  • WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    $10.99
    MSRP: $14.99
    Save 27%
  • WB-HB-20-20W Harmsco Pleated Commercial Water Filter Cartridge
  •  WB-HB-20-50W Harmsco Pleated Commercial Water Filter Cartridge
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek CW-MF Whole House Water Filter Replacement Cartridge
  • ECP5-BB Pentek Whole House Water Filter
  • Pentek ECP50-BB Whole House Water Filter Replacement Cartridge
  • EPM-20 Pentek Whole House Water Filter

    Pentek EPM-20 Whole House Water Filter Replacement Cartridge

    $12.39 MSRP: $16.55
    Save 25%
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    $14.99 MSRP: $20.57
    Save 27%
  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    $18.09 MSRP: $23.10
    Save 22%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • Pentek P1 Polyproplyene Water Filter (10 x 2 1/2)
  • Pentek S1 Pleated Whole House Sediment Filter
  • Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-BB Water Filter Cartridge Replacement

    $14.99 MSRP: $17.99
    Save 17%
  • HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1
  • HB-20-1W Harmsco Comparable Pleated Sediment Water Filter by Tier1
  • 801-50-HT Harmsco Replacement Sediment Filter Cartridge

    801-50-HT Harmsco Replacement Sediment Filter Cartridge

    $7.95
    MSRP: $13.99
    Save 43%
  • HB-10-50-W Harmsco Calypso Blue Filter Cartridge

    HB-10-50-W Harmsco Calypso Blue Filter Cartridge

    $18.99
    MSRP: $26.99
    Save 30%
  • HAC-BB-20-W Harmsco Replacement Filter Cartridge

    HAC-BB-20-W Harmsco Replacement Filter Cartridge

    $70.99
    MSRP: $87.99
    Save 19%
  • Harmsco PO-25-G1PS-EA Polypropylene Filter Bag

    Harmsco PO-25-G1PS-EA Polypropylene Filter Bag

    $18.99
    MSRP: $21.34
    Save 11%
  • 801-20 Harmsco Replacement Filter Cartridge

    801-20 Harmsco Replacement Filter Cartridge

    $7.99
    MSRP: $11.49
    Save 30%
  • HC40-5 Harmsco Replacement Filter Cartridge

    HC40-5 Harmsco Replacement Filter Cartridge

    $92.99
    MSRP: $95.34
    Save 2%
  • PO-25-G2PS-EA Harmsco Bag Filter

    PO-25-G2PS-EA Harmsco Filter Bag

    $22.99
    MSRP: $25.34
    Save 9%
  • PP-S-1 Harmsco Replacement Filter Cartridge

    PP-S-1 Harmsco Replacement Filter Cartridge

    $19.49
    MSRP: $24.71
    Save 21%
  • PENTEK-EPM-10

    PENTEK-EPM-10

    $9.99
    MSRP: $13.99
    Save 29%
  • GAC-10 Pentek Undersink Filter Replacement Cartridge

    GAC-10 Pentek Undersink Filter Replacement Cartridge

    $14.99
    MSRP: $19.99
    Save 25%
  • NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    $10.29
    MSRP: $15.99
    Save 36%
  • PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    $24.99
    MSRP: $30.69
    Save 19%
  • PD-50-934 Pentek Whole House Filter Replacement Cartridge
  • TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    $20.99
    MSRP: $24.60
    Save 15%
  • WP-30 Pentek Whole House Filter Replacement Cartridge

    WP-30 Pentek Whole House Filter Replacement Cartridge

    $6.99
    MSRP: $8.15
    Save 14%
  • PENTEK-C1

    PENTEK-C1

    $14.99
    MSRP: $19.99
    Save 25%
  • PENTEK-CBR2-10

    PENTEK-CBR2-10

    $18.99
  • PENTEK-CC-10

    PENTEK-CC-10

    $15.39
  • PENTEK-CCBC-10

    PENTEK-CCBC-10

    $19.59
  • PENTEK-CFB-PLUS10

    PENTEK-CFB-PLUS10

    $9.99
    MSRP: $14.13
    Save 29%
  • PENTEK-CRE-1

    PENTEK-CRE-1

  • PENTEK-CW-50

    PENTEK-CW-50

    $6.99
  • PENTEK-ECP5-10

    PENTEK-ECP5-10

    $9.19
    MSRP: $9.42
    Save 2%
  • PP-BB-10-1 Harmsco Calypso Blue Water Filter

    PP-BB-10-1 Harmsco Calypso Blue Water Filter

    $39.99
    MSRP: $58.64
    Save 32%
  • PENTEK-BBF1-20MB

    PENTEK-BBF1-20MB

    $89.99
    MSRP: $112.23
    Save 20%
  • HB-10-5W Harmsco Calypso Blue Replacement Filter Cartridge
  • HB-20-1W Harmsco Calypso Blue Replacement Filter Cartridge
  • HB-20-20W Harmsco Calypso Blue Replacement Filter Cartridge
  • HB-20-50W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-50W Harmsco Calypso Blue Replacement Filter Cartridge

    $38.99
    MSRP: $49.99
    Save 22%
  • HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    $31.99
    MSRP: $36.79
    Save 13%

Items 1 to 48 of 56 total

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