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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47 Item(s)

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  • IC10-14C Coconut GAC Inline Water Filter (1/4-inch FPT)
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    $17.99 MSRP: $22.99
    Save 22%
  • WHKF-GAC AP117 Whirlpool Comparable Whole House Sediment Water Filter by Tier1
  • WHKF-IMTO Whirlpool Comparable Coconut GAC Inline Water Filter by Tier1 (1/4-inch FPT)
  • IN-WF0190 Comparable Inline Coconut Carbon Water Filter By Tier1

    IN-WF0190 Inline Coconut Carbon Water Filter By Tier1

    $8.99
    MSRP: $12.99
    Save 31%
  • CL6ROT33-B Omnipure Comparable Granular Activated Inline Water Filter by Tier1
  • K2333-KK Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • K2533-KK Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • K5633JJ Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • ICF-10Q38 Hydronix Inline Coconut Carbon Water Filter Replacement by Tier1
  • K2386-KK Omnipure Inline Coconut Carbon Water Filter Replacement by Tier1
  • K2528-KK Omnipure Comparable Inline Coconut Carbon Water Filter Tier1
  • IC-101L Pentek Comparable Granular Activated Carbon Inline Water Filter by Tier1
  • EP-BB Pentek Comparable Carbon Block Water Filter by Tier1

    EP-BB Pentek Comparable Carbon Block Water Filter by Tier1

    $17.99 MSRP: $22.99
    Save 22%
  • DBC-10EX2 Pentek Comparable Water Filter Cartridge Replacement by Tier1
  • PENTEK-EP-5

    PENTEK-EP-5

    $7.19
  • DW-200-R American Plumber Undersink Filter Replacement Cartridge
  • 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    $31.99
    MSRP: $34.49
    Save 7%
  • CRYSTAL-QUEST-CQE-RC-04008

    CRYSTAL-QUEST-CQE-RC-04008

    $77.00
    MSRP: $83.94
    Save 8%
  • CRYSTAL-QUEST-CQE-RC-04051

    CRYSTAL-QUEST-CQE-RC-04051

    $77.00
    MSRP: $94.29
    Save 18%
  • P1012581 Culligan Undersink Replacement Filter Cartridge
  • CS-51 Cuno Inline Filter

    CS-51 Cuno Inline Filter

    $39.99
    MSRP: $42.34
    Save 6%
  • EV4339-12 Everpure Claris L Replacement Hot Water Filter Cartridge

    EV4339-12 Everpure Claris L Hot Water Filter Cartridge

    $195.99
    MSRP: $205.84
    Save 5%
  • 3US-AF01 Filtrete Undersink Filter Replacement Cartridge

    3US-AF01 Filtrete Undersink Filter Replacement Cartridge

    $27.99
    MSRP: $28.99
    Save 3%
  • 3US-AS01 Filtrete Undersink Filter System

    3US-AS01 Filtrete Undersink Filter System

    $41.99
    MSRP: $50.59
    Save 17%
  • HYDRONIX-ICF-10

    HYDRONIX-ICF-10

    $8.99
    MSRP: $9.19
    Save 2%
  • HYDRONIX-ICF-10Q

    HYDRONIX-ICF-10Q

    $10.99
    MSRP: $15.99
    Save 31%
  • HYDRONIX-ICF-10Q38

    HYDRONIX-ICF-10Q38

    $9.89
    MSRP: $11.49
    Save 14%
  • HYDRONIX-ICF-6

    HYDRONIX-ICF-6

    $6.49
    MSRP: $9.19
    Save 29%
  • ICF-6Q Hydronix Inline Coconut Carbon Filter

    ICF-6Q Hydronix Inline Coconut Carbon Filter

    $10.99
    MSRP: $15.99
    Save 31%
  • QC10-EPR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • OMNIPURE-CL10ROT33-B

    OMNIPURE-CL10ROT33-B

    $12.19
    MSRP: $13.79
    Save 12%
  • OMNIPURE-CL10ROT33-C

    OMNIPURE-CL10ROT33-C

    $9.99
    MSRP: $13.79
    Save 28%
  • OMNIPURE-CL10ROT40-B

    OMNIPURE-CL10ROT40-B

    $11.09
    MSRP: $13.79
    Save 20%
  • OMNIPURE-CL10ROT40-C

    OMNIPURE-CL10ROT40-C

    $8.99
    MSRP: $12.64
    Save 29%
  • OMNIPURE-CL6ROT33-B

    OMNIPURE-CL6ROT33-B

    $11.09
    MSRP: $11.49
    Save 3%
  • OMNIPURE-CL6ROT33-C

    OMNIPURE-CL6ROT33-C

    $8.89
    MSRP: $11.49
    Save 23%
  • PENTEK-C2

    PENTEK-C2

    $8.29
    MSRP: $8.84
    Save 6%
  • WQCSC11 Watts Kwik-Change Sediment Filter Cartridge

    WQCSC11 Watts Kwik-Change Sediment Filter Cartridge

    $11.99
    MSRP: $16.09
    Save 25%
  • OMNIPURE-CL10ROT33-A

    OMNIPURE-CL10ROT33-A

    $10.99
  • OMNIPURE-E5722-P

    OMNIPURE-E5722-P

    $33.99
    MSRP: $49.99
    Save 32%
  • MAXETW-FF20 Watts C-MAX Whole House Replacement Filter Cartridge
  • 3M Aqua-Pure AP510 Water Filter System

47 Item(s)

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