Replacement Filters
Now offering yearly filter replacement subscriptions!
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Nelsen RO Twist Loc 75 GPD RO Membrane Replacement Cartridge
$102.00Replacement 75 GPD RO membrane for Twist-Loc reverse osmosis systems.Twist-Membrane-75$102.00 -
3 stage big blue filter kit 4.5" x 20" sediment, bone char, carbon block
$244.00Experience pristine water quality with our 3 Stage Filter Kit, designed for ultimate purification and performance. This comprehensive filter system provides a powerful filtration solution for your home, optimizing your drinking water and ensuring safety...RFK3-4520-SDCBBC$244.00 -
Big Blue 20-inch Empty Cartridge Shell
$26.00The Big Blue 20" empty cartridge shell allows you to make your own custom whole house filter to treat exactly what you want in your water. Or, you can save money and refill it after the media is exhausted several times over. It includes the shell,...EC-4520$26.00 -
3-Stage Activated Alumina & KDF55 Filter Kit (for DWF3-2510-SDAA55)
$79.00Replacement filter set for the DWF-3-AAKDF. Includes sediment, activated alumina, and GAC/KDF55 filters. Standard filter size fits common 10" housings. Product Features 10" 1µ Sediment 1 micron sediment filter for particulates 10"...RFK3-2510-SDAA55$79.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, Bone Char, and Activated Alumina
$329.00Replacement or upgrade for standard Big Blue systems Sediment filter Bone Char Carbon filter Activated Alumina filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Sediment filter removes a wide range of dirt and particulate,...RFK3-4520-SDBCAA$329.00 -
10-inch Color-changing DI Filter
$39.00Standard 10" Color-changing DI Filter Product Features DI Deionization resin for removal of up to 99.9% of contaminants Color-changing Resin Color-changing resin helps to indicate when it is time to be replaced Standard 10" Common size...DI-2510$39.00 -
Big Blue 20-inch Matrikx Pb1 Lead Filter
$159.00The Matrikx Pb1 filter provides 0.5 micron nominal filtration along with reduction of lead, chlorine, cyst, heavy metals and a wide range of chemicals. Filter is ~4.5"x20" and fits standard Big Blue filter housings Product Features Matrikx 0.5...KX-4520-Pb1$159.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Carbon Block Filter
$219.00The 5 micron sediment filter is a 100% polypropylene filter containing graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The activated alumina filter removes lower levels of both...RFK3-4520-SDAACB$219.00 -
20-inch GAC/KDF 55 Filter
$69.00The 20" GAC/KDF 55 filter can be used to replace a current filter or upgrade from the carbon block filter or standard GAC filter. The KDF 55 media enables the filter to remove heavy metals, including lead, mercury, and iron. The filter measures 2...GC-2520-55$69.00 -
RO/DI Psarion Chi Reef Filter Kit (replaces UDIFK-2)
$90.00Filter set fits RO/DI Deluxe systems. Includes sediment, carbon, and 2 full size DI filters. Product Features Replaces UDIFK-2 Identical product, updated part number 10" 1µ Sediment 1 micron sediment filter for particulates 10" Carbon...AFK-Chi$90.00 -
Big Blue 20-inch GAC/5# KDF 55 Filter
$143.00The Big Blue 20" GAC/KDF 55 filter can be used to replace a current filter or upgrade from the carbon block filter or standard GAC filter. The KDF 55 media enables the filter to remove heavy metals, including lead, mercury, and iron. The filter...GC-4520-555$143.00 -
2 Stage Filter Kit 4.5" x 20" - Bone Char Carbon Filter & Radial Flow Carbon Filter for Pure Water
$229.00Transform your water purification process with our 2 Stage Filter Kit, expertly designed for optimum filtration efficiency. This kit features advanced Bone Char and Radial Flow Carbon, ensuring your drinking water is free from harmful contaminants while...RFK2-4520-BCRF$229.00 -
10-inch Pb1 0.5-micron Carbon Filter for Lead, VOC and Cyst Reduction
$27.00For chlorine, taste, odor, VOC, Cyst and lead reduction 0.5 micron nominal filtration Formulated for cyst and heavy metal reduction Low pressure drop Matrikx Pb1 filter powered by GreenBloxk is make from 100% coconut shell carbon. Designed...CB-2510-Pb1$27.00 -
Big Blue 20-inch Pleated Sediment Filter
$27.0020" Big Blue 5 micron sediment filter Product Features Pleated for high flow and great holding capacity Removes particulates 4.5" x 20" standard big blue replacement size Fits Big Blue housings used on some whole house filter systems Removes...SD-4520-PL50$27.00 -
Big Blue 10-inch Sediment Filter - 1-micron
$29.0010" Big Blue 1 micron sediment filter Product Features 1µ Removes particulates as small as 1 micron Big Blue 10" Fits Big Blue housings used on some whole house filter systems Removes sediment Traps dirt, sand, and...SD-4510-1$29.00