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!

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • 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 193 to 240 of 541 total

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  • Pentek PD-10-30 Polypropylene Sediment Filter

    Pentek PD-10-30 Polypropylene Sediment Filter

    $19.99
    MSRP: $22.34
    Save 11%
  • K2386-JJ Omnipure Inline Phosphate Water Filter

    K2386-JJ Omnipure Inline Phosphate Water Filter

    $10.05
    MSRP: $17.24
    Save 42%
  • NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    $10.29
    MSRP: $15.99
    Save 36%
  • CBC-5 Pentek Undersink Filter Replacement Cartridge

    CBC-5 Pentek Undersink Filter Replacement Cartridge

    $10.29
    MSRP: $15.99
    Save 36%
  • R2-1PK Instapure Essentials Faucet Filter Replacement Cartridge
  • 67001 Aquamira Water Bottle Replacement Filter Cartridge
  • AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge
  • KO100G2S Pentek Polypropylene Bag Filter

    KO100G2S Pentek Polypropylene Filter Bag

    $10.99
    MSRP: $12.98
    Save 15%
  • PX01-30 Purtrex Sediment Filter Cartridge

    PX01-30 Purtrex Sediment Filter Cartridge

    $10.99
    MSRP: $15.99
    Save 31%
  • 6570090 Tier1 Plastic Tank Ball Valve
  • AICRO-JGK Watts Inline Filter Cartridge
  • Whirlpool WHKF-GAC Undersink Replacement Water Filter Cartridge

    WHKF-GAC Whirlpool Undersink Replacement Filter Cartridge

    $10.99
    MSRP: $20.34
    Save 46%
  • WHKF-WHPL Whirlpool Whole House Replacement Sediment Filter Cartridge (2-Pack)
  • WHKF-WHSW Whirlpool Whole House Replacement Sediment Filter Cartridge (2-Pack)
  • ELF-DK7 Omnipure Filter Head

    ELF-DK7 Omnipure Filter Head

    $10.99
    MSRP: $16.09
    Save 32%
  • SPC-45-1010 Hydronix Pleated Sediment Water Filter

    SPC-45-1010 Hydronix Pleated Sediment Water Filter

    $10.99
    MSRP: $18.39
    Save 40%
  • CL10ROT33-A Omnipure GAC Inline Water Filter

    CL10ROT33-A Omnipure GAC Inline Water Filter

    $10.99
    MSRP: $14.94
    Save 26%
  • SPC-25-2010 Hydronix Pleated Sediment Water Filter

    SPC-25-2010 Hydronix Pleated Sediment Water Filter

    $10.99
    MSRP: $12.64
    Save 13%
  • SWC-25-2001 Hydronix String Wound Sediment Water Filter (1 micron)
  • Q5328 Omnipure Water Filter

    Q5328 Omnipure Water Filter

    $10.99
    MSRP: $14.94
    Save 26%
  • AP-GRMB-01PP-20UB Whole House Replacement Water Filter by 3M Aqua-Pure
  • GS-10-B Pentek Inline Filter Replacement Cartridge

    GS-10-B Pentek Replacement Inline Water Filter Cartridge

    $11.09
    MSRP: $16.99
    Save 35%
  • CL10ROT40-B Omnipure Inline Coconut Carbon Filter

    CL10ROT40-B Omnipure Inline Coconut Carbon Filter

    $11.09
    MSRP: $21.99
    Save 50%
  • CL6ROT33-B Omnipure Inline Filter

    CL6ROT33-B Omnipure Inline Filter

    $11.09
    MSRP: $16.99
    Save 35%
  • K2533TJ Omnipure Inline Carbon Filter

    K2533TJ Omnipure Inline Carbon Filter

    $11.09
    MSRP: $16.99
    Save 35%
  • PENTEK-SLIM-PR10-JG38 Pentek Undersink Filter 10 inch Housing
  • 32-250-125-050 KX Technologies Replacement Filter Cartridge

    32-250-125-050 KX Technologies Replacement Filter Cartridge

    $11.29
    MSRP: $16.99
    Save 34%
  • 153017 Pentek Slim Line Filter Housing Sump - Blue

    153017 Pentek Slim Line Filter Housing Sump - Blue

    $11.29
    MSRP: $15.28
    Save 26%
  • Hytrex GX30-20 Polypropylene Sediment Filter

    Hytrex GX30-20 Polypropylene Sediment Filter

    $11.59
    MSRP: $18.99
    Save 39%
  • R2-2PK Instapure Essentials Faucet Filter Replacement Cartridge (2-Pack)
  • 1-50201-C Seychelle Pure Water Straw with Regular Filter
  • W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • 67005 Aquamira Frontier Emergency Water Filter System

    67005 Aquamira Frontier Emergency Water Filter System

    $11.99
    MSRP: $13.74
    Save 13%
  • 3M Aqua-Pure AP110 Whole House Water Filter Cartridge

    3M Aqua-Pure AP110 Whole House Filter Replacement Cartridge

    $11.99
    MSRP: $18.14
    Save 34%
  • IC-750 Culligan Inline Filter
  • NCP-10 Culligan Whole House Filter Replacement Cartridge
  • P1-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
  • P5-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
  • SC-AUTO SteriPEN Portable UV System Car Charging Adapter
  • WHKF-IMTO Whirlpool Inline Filter

    WHKF-IMTO Whirlpool Inline Filter

    $11.99
    MSRP: $14.94
    Save 20%
  • GX01-30 Hytrex Water Filter Cartridge

    GX01-30 Hytrex Water Filter Cartridge

    $11.99
    MSRP: $16.09
    Save 25%
  • K2533JJ Omnipure Water Filter

    K2533JJ Omnipure Water Filter

    $11.99
    MSRP: $13.79
    Save 13%
  • QNVH-BB Omnipure Twist Tap 1/4-inch NPT Non-Valved Filter Head

    QNVH-BB Omnipure Twist-Tap Water Filter Head

    $11.99
    MSRP: $16.09
    Save 25%
  • BPHE-420-1 Pentek Polypropylene High Efficiency Bag Filter

    BPHE-420-1 Pentek Polypropylene High Efficiency Bag Filter

    $11.99
    MSRP: $16.55
    Save 28%
  • FS-1-100 Rusco Spin-Down Replacement Water Filter

    FS-1-100 Rusco Spin-Down Replacement Water Filter

    $11.99
    MSRP: $21.84
    Save 45%
  • FS-1-140 Rusco Spin-Down Replacement Water Filter

    FS-1-140 Rusco Spin-Down Replacement Water Filter

    $11.99
    MSRP: $18.39
    Save 35%
  • FS-1-60 Rusco Spin-Down Polyester Replacement Water Filter

    FS-1-60 Rusco Spin-Down Polyester Replacement Water Filter

    $11.99
    MSRP: $19.54
    Save 39%
  • WQCSC11 Watts Kwik-Change Sediment Filter Cartridge

    WQCSC11 Watts Kwik-Change Sediment Filter Cartridge

    $11.99
    MSRP: $16.09
    Save 25%

Items 193 to 240 of 541 total

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