Replacement Filters
Now offering yearly filter replacement subscriptions!
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20-inch Big Blue 3 Stage Filter Kit with GAC/KDF 55, Activated Alumina, and Sediment Filters
$259.00The 5 micron sediment filter is a 100% polypropylene filter contains graded density that provides higher dirt holding capacity than standard spun polypropylene and string wound cartridges. The GAC/KDF 55 filter contains 4.0 lbs. of KDF-55 media, along...RFK3-4520-SD55AA$259.00 -
RO Zoi Rho Pure Filter Kit
$179.00This filter set is designed for the Zoi Rho Pure system and also replaces the filters (less UV bulb) on the Zoi Sigma system. The standard size filters work in most reverse osmosis systems available as well, and includes a 5 micron sediment filter, a GAC...DFK-Rho$179.00 -
Big Blue 20-inch Big Blue Phosphate Filter for Scale Prevention
$199.00The Big Blue 20" phosphate filter Contains a slow-melt polyphosphate that dissolves slowly in water to inhibit scale and rust build-up. This type of treatment is recommended for use with ice machines, coffee and vending machines, food service...PO-4520$199.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, KDF85, Bone Char
$279.005-micron sediment filter Reduces dirt and particulates Catalytic carbon/KDF85 filter Reduces rotten egg odor, as well as a wide range of tastes, odors, and chemicals Bone char carbon filter Reduces arsenic, fluoride, and radioactive...RFK3-4520-SD85BC$279.00 -
10-inch GAC/KDF 85 Filter
$29.00The 10" GAC/KDF 55 filter can be used to replace current filters or upgrade from the carbon block or standard GAC filters. The KDF 55 media enables the filter to remove heavy metals, including iron, lead, and mercury. The filter measures 2.5-inch in...GC-2510-85$29.00 -
Inline Alkaline Filter - Increases pH & Alkalinity, Adds Numerous Minerals, and Lowers ORP
$71.00The inline alkaline filter has a multi-stage process that includes high strength Neodymium magnetic module, quartz media, a special blend CalCor media, tourmaline Ceramic (emits a high capacity of Far Infrared Rays and negative ions, a "Super Ceramic"...ALK-2512H-14F$71.00 -
Big Blue 10-inch GAC/KDF 55 Filter
$65.00The Big Blue 10" 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-4510-55$65.00 -
Big Blue 20-inch GAC Filter
$62.00The Big Blue 20" GAC filter can be used to replace a current filter or upgrade from the standard carbon block filter. The filter measures 4.5-inch in diameter and 20-inch long and fits all standard 20-inch Big Blue housings. Product...GC-4520$62.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, Bone Char, Radial Flow Carbon
$249.00Replacement filter set for the 3 stage Big Blue 20" filter system includes sediment, bone char and radial flow carbon filters. Product Features 20" BB Sediment Filter The 5 micron sediment filter is a 100% polypropylene filter contains graded...RFK3-4520-SDBCRF$249.00 -
Aptera Alkamag Alkaline Filter - 2.5-inch x 10-inch
$99.00Inline Aptera Alkamag Alkaline Filter in a translucent casing for standard filter housings. This 11-stage alkaline filter alkalinizes your water and increases the pH to 8.0 or higher. Product Features Alkaline A mixture of mineral beads,...ALK-2510$99.00 -
20-inch Big Blue 2 Stage Filter Kit with Activated Alumina & Carbon Block
$179.00Replacement 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-AACB$179.00 -
Portable RO Mikro Omega Filter Kit
$49.00This filter set is designed for the Mikro Omega portable RO system. The inline filters work with most reverse osmosis systems available as well, and includes an inline GAC filter and an inline DI filter, both with 1/4" quick-connect fittings. Reverse...PFK-Omega$49.00 -
4-Stage Reverse Osmosis Filter Kit
$39.00This filter set is designed for the 4-stage reverse osmosis (RO) system. The standard size filters work in most reverse osmosis systems and includes a 5 micron sediment filter, a 5 micron carbon block filter, and an inline GAC taste and odor polishing...DFK-4$39.00 -
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