Discount Water Filters and Air Filters at Discount Filter Store.com

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Whole House Reverse Osmosis Systems

By installing a whole house reverse osmosis filtration system, you and your family can enjoy great tasting drinking water from just about any faucet in your home. Whole house RO systems are built to reduce chlorine taste and odor, sediment and contaminants from your drinking and cooking water. Shop with confidence at DiscountFilterStore.com. Our whole house reverse osmosis systems are backed by our No Worries Price Match Guarantee. All orders over $39 receive free shipping.
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  • WH-RO-1000 Whole Home Reverse Osmosis System by Tier1 (1,000 GPD)

    WH-RO-1000 Whole House Reverse Osmosis System by Tier1 (1,000 GPD)

    $2,899.00
    MSRP: $3,399.00
    Save 15%
  • HAC-10-LR-W Harmsco Chlorine and Lead Removal Whole House Filter
  • KDF85-20 Tier1 Water Filter
  • KDF85-10BB Tier1 Water Filter

    KDF85-10BB Tier1 Water Filter

    $81.99
    MSRP: $86.24
    Save 5%
  • AF-10-2210 Aries Comparable Sediment Water Filter by Tier1
  • AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter
  • KDF55-10BB Tier1 Water Filter
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99
    MSRP: $27.34
    Save 12%
  • Crystal Quest 2-7/8 in x 20 in Calcite & Coconut Shell GAC Filter Cartridge
  • CQE-US-00324 Crystal Quest Undersink Triple Nitrate PLUS Filtration System
  • CQE-US-00320 Crystal Quest Undersink Triple Arsenic PLUS Filtration System
  • CQE-US-00313 Crystal Quest Undersink Double Ceramic PLUS Water Filtration System
  • CQE-RC-04020 Crystal Quest Nitrate Water Filter Cartridge
  • CQE-RC-04016 Crystal Quest Multi Stage PLUS Water Filter Cartridge
  • CQE-RC-04006 Crystal Quest Fluoride Water Filter

    CQE-RC-04006 Crystal Quest Fluoride Water Filter

    $57.00
    MSRP: $63.24
    Save 10%

    Out of stock

  • CQE-RC-04003 Crystal Quest Multi Stage ULTRA Water Filter Cartridge
  • AF-10-3695 Aries Arsenic Removal Water Filter

    AF-10-3695 Aries Arsenic Removal Water Filter

    $62.99
    MSRP: $77.04
    Save 18%
  • Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    $13.99
    MSRP: $17.12
    Save 18%
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • WH-RO-350 Whole Home Reverse Osmosis System by Tier1 (350 GPD)

    WH-RO-350 Whole House Reverse Osmosis System by Tier1 (350 GPD)

    $899.00
    MSRP: $1,099.00
    Save 18%
  • P-250 Pentek Comparable Under Sink Water Filter Set by Tier1
  • Pentek C1-20 Carbon Water Filter Replacement Cartridge

    Pentek C1-20 Water Filter Cartridge Replacements

    $16.99 MSRP: $20.00
    Save 15%
  • C1 Pentek Comparable Carbon Block Water Filter by Tier1

    C1 Pentek Comparable Carbon Block Water Filter by Tier1

    $12.99 MSRP: $18.99
    Save 32%
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • RFFE20-BB Pentek Iron Reducing Water Filter Cartridge (20 in x 4.5 in)
  • PCC212 Pentek Replacement Filter Cartridge

    PCC212 Pentek Replacement Filter Cartridge

    $20.99 MSRP: $22.41
    Save 6%
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    $32.99 MSRP: $36.34
    Save 9%
  • NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    $34.99 MSRP: $48.81
    Save 28%
  • 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%
  • Doulton W9223022 Ultracarb 30-Pack Replacement Ceramic Filter
  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (2-Pack)
  • NCP-BB Pentek Comparable Whole House Carbon Filter by Tier1
  • FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1
  • W9221000 Doulton Replacement Ceramic Filter

    W9221000 Doulton SuperSterasyl Replacement Ceramic Filter

    $37.00
    MSRP: $59.59
    Save 38%
  • W9220406 Doulton Replacement Ceramic Filter

    W9220406 Doulton Replacement Ceramic Filter

    $32.00
    MSRP: $63.99
    Save 50%
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • P-250A Pentek Undersink Filter Set
  • P-250 Pentek Undersink Filter Set

    P-250 Pentek Undersink Filter Set

    $33.99
    MSRP: $44.99
    Save 24%
  • NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    $10.29
    MSRP: $15.99
    Save 36%
  • 22070 Hydrologic BigBoy Replacement Carbon Filter

    22070 Hydrologic BigBoy Replacement Carbon Filter

    $97.99
    MSRP: $140.95
    Save 30%

    Out of stock

  • 22017 Hydrologic Replacement De-Ionization Cartridge

    22017 Hydrologic Deionization Filter Cartridge

    $65.99
    MSRP: $89.95
    Save 27%
  • FXWTC GE SmartWater Whole House Filter Replacement Cartridge
  • FXSVC GE SmartWater Undersink Filter Set

    FXSVC GE SmartWater Undersink Filter Set

    $62.89
    MSRP: $89.99
    Save 30%
  • 3WH-STDCW-F02 Filtrete Replacement Filter Cartridge (2-Pack)
  • W9222909 Doulton Imperial SuperCarb OBE Ceramic Water Filter
  • D-15 Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)

Items 1 to 48 of 84 total

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