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

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Furnace & Air Conditioner Filters

Tier1 water filters are built to deliver maximum performance, at an affordable price. Our Tier1 brand refrigerator water filters are comparable to the OEM models, including the brands Amana, GE, Kenmore, KitchenAid, LG, Maytag, Whirlpool and more. The Tier1 replacement water filters will significantly reduce chlorine, dirt and sediment just like the OEM brands. Buy a Tier1 refrigerator water filter and ensure you serve only the cleanest water, and pay only the best price. For more Tier1 products and filters click here.


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4373574 Whirlpool Undersink Filter Kit
4373575 Whirlpool Undersink Filter Kit
CQE-CT-00142 Crystal Quest Countertop Reverse Osmosis Filter System
SY-1000 Culligan Water Filtration System
US-600 Culligan Slim Undersink Filter System
US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
US-EZ-3 Culligan Level 3 Easy-Change Undersink Filter System
US-EZ-4 Culligan Level 4 Easy-Change Undersink Filter System
W9320004 Doulton HIS Undersink Water Filtration System
W9330042 Doulton HIP Undersink Water Filtration System
W9331001 Doulton HCP Countertop Water Filtration System
W9331032 Doulton HCP UltraCarb Countertop Filter System
W9380001 Doulton Undersink Water Filtration System
W9380002 Doulton HIP3 Undersink Water Filtration System
W9380003 Doulton Countertop Water Filtration System
4US-MAXL-S01 3M Filtrete Drinking Water Filtration System (Single Stage)
4US-MAXS-S01 3M Filtrete Drinking Water Filtration System
36005 Hydrologic SmallBoy Dechlorinator & Sediment Filtration System
CBF1-S-05 OmniFilter Undersink Water Filtration System
CBF3-S-05 OmniFilter Undersink Water Filtration System
OB5-S-05 OmniFilter Whole House Water Filtration System
QC10-CB1 Pentek Quick-Change Water Filtration System
QC10-CBR-JG14 Pentek Quick-Change Water Filter System
QC10-CBR-THREADED Pentek Quick-Change Water Filtration System
QC10-EP Pentek Quick-Change Filter System
QC10-GAC Pentek Quick-Change Water Filter System
QC10-TSGAC Pentek Quick-Change Water Filter Cartridge
RO-3500 Pentek Reverse Osmosis Filter System
PENTEK-SLIM-PR10-JG38 Pentek Undersink Filter 10 inch Housing
US-1000 Pentek Undersink Filter System
US-1500 Pentek Undersink Filter System with Monitor
QMP602 QMP Countertop Filter System
QMP603 QMP Two-Stage Countertop Filter System
FM-350-DWS Water Factory Systems FaucetMATE Faucet Filter System
BF7-S-05 OmniFilter Undersink Water Filtration System
CBF2-S-05 OmniFilter Undersink Water Filtration System
F1-S6-06 OmniFilter Faucet Filter System
OB1-S-05 OmniFilter Undersink Filter System
USM2-S-S06 OmniFilter Undersink Water Filtration System
W9331028 Doulton HCP SuperCarb Countertop Filter System
W9320007 Doulton Undersink Ceramic Candle Filter Housing
W9331208 Doulton HCS Countertop Water Filtration System
WQCFU-T-KIT Watts Triple Drinking Water Filtration System w/Kwik-Change Filter Cartridges
W9330059 Doulton HIP Undersink Water Filtration System
W9361236 Doulton Gravity Water Filter
FM-25 Culligan Water Faucet Filter
H2O+ Brondell Cypress Countertop Water Filtration System (#H630)
35214 Brita On Tap Water Faucet Filtration System
F1 OmniFilter Faucet Filter
31050 Hydrologic TallBoy Sediment Filter & Dechlorinator
CQE-FM-00500 Crystal Quest Faucet Filter (White)
CQE-FM-00501 Crystal Quest Faucet Filter (Chrome)
CTW-10-WF Tier1 Countertop Water Filter System
5-Stage Reverse Osmosis System by Tier1
C-100 Rainshow’r Condor Drinking Water Filtration System
C-200 Rainshow’r Condor Drinking Water Filtration System
BT-300 Rainshow’r Breakthrough Drinking Water Filtration System
BT-100 Rainshow’r Breakthrough Drinking Water Filtration System
WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter (Brushed Nickel)
Dupont WFFM100XW Premier Faucet Mount Drinking Water Filter System
Dupont WFFM300XW Low Profile Faucet Mount Drinking Water Filter System
Dupont WFFM300XCH Low Profile Faucet Mount Drinking Water Filter System
WFDW120009W DuPont Universal Drinking Water Filter System
WFPF13003B DuPont Universal Whole House Filtration System
WFCH2 DuPont Complete Home Water Filtration Kit
DuPont WFQTR130004 Quick Twist Refrigerator/Icemaker Filter System
The DuPont WFFS150XCH Chrome Counter Top Faucet System has been discontinued by the manufacturer
RO-QC-450 4-Stage Quick Change Reverse Osmosis Water Filter System by Tier1 (50 GPD)
W9380040 Doulton Two Stage Duo Undersink Drinking Water System

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  1. DPFR20X25X5DAK Tier1 Replacement Air Filter - 20X25X5 (2-Pack)

    20x25x5 DPP52025 Air Kontrol Air Filter: Merv 8 Comparable Replacement By Tier1 (2-Pack)

    2-pack of filters designed to fit into the Air Kontrol Dust Patroller DP2000 air cleaner Learn More
    $55.96 MSRP:  $66.65
  2. DPFR20X25X5M11DAK Tier1 Replacement Air Filter - 20X25X5 (2-Pack)

    20x25x5 DPP52025 Air Kontrol Air Filter MERV 11: Comparable Replacement by Tier1 (2-Pack)

    Two-pack of filters for the Dust Patroller DP2000 air cleaner from Air Kontrol Learn More
    $60.44 MSRP:  $79.99
  3. DPFR20X25X5M13DAK Tier1 Replacement Air Filter - 20X25X5 (2-Pack)

    20x25x5 DPP52025 Air Kontrol Air Filter MERV 13: Comparable Tier1 Replacement (2-Pack)

    2-pack of air filters that fit into the Air Kontrol Dust Patroller DP2000 air cleaner Learn More
    $67.16 MSRP:  $79.53
  4. DPFR20X25X5OBDAK Tier1 Replacement Air Filter - 20X25X5 (2-Pack)

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