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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  1. IHS22-D4 Trojan UV Disinfection System

    IHS22-D4 Trojan UV Disinfection System

    Uses a 20-inch Big Blue 5-micron sediment filter and a 20-inch Big Blue 5-micron carbon block filter before the UV treatment chamber Learn More
  2. Hydronix HF2-10CLWH12 Clear 10 inch Filter Housing

    Hydronix HF2-10CLWH12 Clear 10-inch x 2.5-inch Filter Housing

    Receives any standard 10-inch by 2.5-inch filter cartridge Learn More
    $15.99 MSRP:  $22.99
  3. VH410M Viqua Home Plus UltraViolet Water Disinfection System

    VH410M Viqua Home Plus UltraViolet Water Disinfection System

    Fits standard 3/4-inch - 1-inch Combo NPT fittings Learn More
    $839.00 MSRP:  $1125.00

    Out of stock

  4. VIQUA-E4

    650682 E4 Viqua Professional UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $889.00 MSRP:  $1185.00
  5. VIQUA-E4+
  6. VIQUA-E4-V

    660040-R E4-V Viqua Professional Plus UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $965.00 MSRP:  $1285.00

    Out of stock

  7. 150564 Pentek Whole House Water Filter System (Clear/ Blue)

    150564 Pentek Whole House Water Filter System (Clear/ Blue)

    Fits Quick Connect 3/4-inch NPT Learn More
    $77.99
  8. 150072 Pentek 3/4-inch #10 Standard Blue/Clear Filter Housing

    150072 Pentek 3/4-inch #10 Standard Blue/Clear Filter Housing

    Fits 3/4-inch NPT inlet and outlet ports Learn More
    $27.99 MSRP:  $34.99
  9. 158098 Pentek Slim Line Water Filter Housing System

    158098 Pentek Slim Line Water Filter Housing System

    Fits 3/8-inch NPT Inlet / Outlet Connection Learn More
    $15.99 MSRP:  $19.99
  10. 158203 Pentek Slim Line Black/Blue w/PR Water Filter System

    158203 Pentek Slim Line Water Filter Housing

    Fits 1/2-inch Quick Connect NPT Learn More
    $16.99
  11. Hydronix HF45-10BLBK15 Filter Housing (Blue)

    Hydronix HF45-10BLBK15 Filter Housing (Blue)

    Accepts standard 10 x 4.5-inch filters Learn More
    $59.99 MSRP:  $75.99
  12. HFPP-34-PR-20 Pentek Big Blue Whole House 20 inch Filter (6-Pack)
  13. HFPP-1-PR20 Pentek Big Blue Whole House 20 inch Filter (6-Pack)
  14. HF2-10BLBK12 Hydronix Whole House Filter Housing

    HF2-10BLBK12 Hydronix Whole House Filter Housing

    Compatible with cartridges sized 10 x 2-1/2 inches Learn More
    $16.99 MSRP:  $24.99
  15. HF2-10CLBK12 Hydronix Clear Whole House Filter Housing

    HF2-10CLBK12 Hydronix Clear Whole House Filter Housing

    Cartridges sized 10 x 2-1/2 inches fit inside this affordable housing Learn More
    $17.99 MSRP:  $25.99
  16. PL44-122NAC15 Pentek Bag Filter Housing - Carbon Steel

    PL44-122NAC15 Pentek Bag Filter Housing - Carbon Steel

    Fits standard 2-inch water lines Learn More
  17. MPST-1 Pentek Multi-Purpose Cartridge and Bag Filter Housing - Stainless Steel
  18. W385-PR American Plumber Undersink Compact Filter System
  19. 3M Aqua-Pure AP431 Inline Filter Replacement Cartridge

    AP431 3M Aqua-Pure Inline Filter Replacement Cartridge

    Fits 3M Aqua-Pure AP430 and AP430-SS filtered hot water systems Learn More
    $30.99 MSRP:  $49.56
  20. 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
    $31.99 MSRP:  $34.49
  21. 3M Aqua-Pure AP917R Water Filter Cartridge

    AP917R 3M Aqua-Pure Replacement Filter Cartridge

    Fits the 3M Aqua-Pure AP903 Water Filtration System Learn More
  22. W9320004 Doulton HIS Undersink Water Filtration System

    W9320004 Doulton HIS Undersink Water Filtration System

    Fits 10 inch by 2 inch short thread filter candles Learn More
    $127.00 MSRP:  $235.99
  23. OB5-S-05 OmniFilter Whole House Filter System

    OB5-S-05 OmniFilter Whole House Water Filtration System

    Built to fit onto standard 3/4-inch water lines. Uses 2.5x10 inch water filters. Learn More
    $29.99 MSRP:  $36.79

    Out of stock

  24. HFPP-34-PR-20 Pentek Big Blue Whole House 20 inch Filter Housing
  25. HFPP-1-PR10 Pentek Big Blue Whole House 10 inch Filter Housing

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