Replacement Filters
Now offering yearly filter replacement subscriptions!
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20-inch Big Blue 2 Stage Filter Kit with Activated Alumina & Sediment Filter
$159.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated alumina filter and carbon block. The activated alumina filter removes removes fluoride, lead, and arsenic from your water without adding anything harmful. The carbon...RFK2-4520-AASD$159.00 -
Aqua Clear Pre-Filter Kit
$45.00Improved pre-filter set fits standard drinking water RO systems. Includes 1 micron sediment, 1 micron carbon, and GAC/KDF. Product Features 10" 1µ Sediment 1 micron sediment filter for particulates 10" GAC/KDF Granular activated carbon...DFK-AC-PRE$45.00 -
Evolution ChloraShield® Carbon Filter 22019 (replaces 22043)
$69.00100% Chloramine Removal 1 micron rating Rated at 1 GPM Low pressure drop combined with exceptionally high dirt holding capacity Great for city water Made in the USA Replacement filter for Evolution RO systems. Please note this filter has...ERO-CB-22019$69.00 -
20-inch Big Blue 2 Stage Filter Kit with Bone Char-GAC/KDF55
$249.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated bone char and GAC/KDF55 filters. The bone char filter reduces fluoride and arsenic in your water along with a wide range of radioactive particles, tastes, and odors...RFK2-4520-BC55$249.00 -
Big Blue 10-inch Catalytic Carbon/KDF 85 Filter
$89.00The Big Blue 10" Catalytic Carbon/KDF 85 filter can be used to replace a current filter or upgrade from the carbon block filter or standard GAC filter. The KDF 85 media enables the filter to remove heavy metals, including lead, mercury, and iron AND...CC-4510-85$89.00 -
RO Zoi Eta Pure Filter Kit (incl. UV Bulb)
$103.00This filter set is designed for the Zoi Eta Pure system. The standard size filters work in most reverse osmosis systems available as well, and includes a 5 micron sediment filter, a GAC filter, a 5 micron carbon block filter, an inline DI filter, an...DFK-Eta$103.00 -
Big Blue 20-inch Catalytic Carbon/5# KDF 85 Filter
$179.00The Big Blue 20" Catalytic Carbon/KDF 85 filter can be used to replace a current filter or upgrade from the carbon block filter or standard GAC filter. The KDF-85 media enables the filter to remove iron AND hydrogen sulfide. Paired with the catalytic...CC-4520-855$179.00 -
Portable RO Mikro Delta Filter Kit (Former Psi filter fit)
$58.00This filter set is designed for the Mikro Psi (Mighty Mite w/ DI) portable RO system. The inline filters work with most reverse osmosis systems available as well, and includes an inline GAC filter, an inline sediment filter, and an inline DI filter,...PFK-Delta$58.00 -
Inline 3/8-inch Carbon Taste & Odor Post Filter - 2-inch x 10-inch
$29.00Inline Carbon Taste & Odor Post Filter w/ 3/8-inch Quick Connect Fittings Product Features GAC Granular activated carbon inline filter is great for removal of chlorine, chloramine, tastes, odors, and chemicals Taste & Odor Post Filter Standard...GC-2010-38Q$29.00 -
20-inch x 2.5-inch Slimline 3 Stage Filter Kit with Sediment-GAC-Carbon Block Filters
$79.00Replacement filter set for 3 stage slimline whole house filter system. Includes carbon block, GAC and sediment filters. Filters need replaced at least once a year, every 6 months is average for most homes. Product Features 20" Sediment...RFK3-2520-SDGCCB$79.00 -
20-inch Big Blue 2 Stage Filter Kit with Activated Alumina & Radial Flow Carbon
$199.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated alumina filter and radial flow carbon. The activated alumina filter removes removes fluoride, lead, and arsenic from your water without adding anything harmful. The...RFK2-4520-AARF$199.00 -
3 stage big blue filter kit 4.5" x 20" sediment, bone char, carbon block
$244.003 Stage Big Blue Replacement Filter Kit Sediment, carbon block, and bone char 5-micron sediment filter 5-micron carbon block filter Bone char filter Reduces sediment Reduces a wide range of tastes, odors, and chemicals Reduces fluoride, arsenic,...RFK3-4520-SDCBBC$244.00 -
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 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 -
Big Blue 20-inch Filter for Arsenic
$229.00Arsenic Removal Filter Big Blue 4.5-inch x 20-inch style High arsenic removal capacity Minimal flow restriction Standard 4.5-inch x 20-inch filter size Big Blue filter with arsenic specific resin offers excellent removal of Arsenic with...AS-4520$229.00