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!

Learn more about our No Worries Guarantee

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.

31 Item(s)

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  • PENTEK-255579-43

    PENTEK-255579-43

    $13.89
    MSRP: $18.99
    Save 27%
  • PENTEK-CB1-10

    PENTEK-CB1-10

    $15.99
  • 255541-43 Pentek Inline Water Filter Replacement
  • RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    $23.99
    MSRP: $27.99
    Save 14%
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    $11.99 MSRP: $15.34
    Save 22%
  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    $8.49 MSRP: $11.49
    Save 26%
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • CBC-10 Pentek Replacement Water Filter
  • Pentek QC10-CB1R Carbon Block Quick Change Filter
  • GAC-5 Pentek Replacement Filter Cartridge
  • GS-6RO-B Pentek Inline Filter Replacement Cartridge
  • IC-101L Pentek Inline Filter
  • PENTEK-P-250

    PENTEK-P-250

    $35.29
    MSRP: $41.99
    Save 16%
  • P-250A Pentek Undersink Filter Set
  • PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    $42.99
    MSRP: $49.67
    Save 13%
  • QC10-CB1 Pentek Undersink Quick-Change Filter System

    QC10-CB1 Pentek Quick-Change Water Filtration System

    $32.95
    MSRP: $40.99
    Save 20%
  • QC10-CBR-JG14 Pentek Undersink Quick-Change Filter System

    QC10-CBR-JG14 Pentek Quick-Change Water Filter System

    $33.99
    MSRP: $35.41
    Save 4%
  • QC10-CBR-THREADED Pentek Undersink Quick-Change Filter System
  • QC10-CBRR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • QC10-EP Pentek Undersink Quick-Change Filter System

    QC10-EP Pentek Quick-Change Filter System

    $27.05
    MSRP: $34.26
    Save 21%
  • PENTEK-QC10-EPR

    PENTEK-QC10-EPR

    $25.69
    MSRP: $27.70
    Save 7%
  • PENTEK-QC10-GAC

    PENTEK-QC10-GAC

    $24.59
    MSRP: $30.69
    Save 20%
  • QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • PENTEK-QC10-TSGAC

    PENTEK-QC10-TSGAC

    $27.49
    MSRP: $31.84
    Save 14%
  • QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • PENTEK-TS-101L

    PENTEK-TS-101L

    $12.79
    MSRP: $15.28
    Save 16%
  • PENTEK-US-1000

    PENTEK-US-1000

    $135.89
    MSRP: $139.71
    Save 3%
  • PENTEK-US-1500

    PENTEK-US-1500

    $178.69
    MSRP: $195.37
    Save 9%
  • WS-20 Pentek Water Softening Filter

    WS-20 Pentek Water Softening Filter

    $26.99
    MSRP: $35.64
    Save 24%
  • PENTEK-CBR2-10R

    PENTEK-CBR2-10R

    $20.29
    MSRP: $21.95
    Save 8%

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