Replacement Filter Kits
Now offering yearly filter replacement subscriptions!
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RO Zoi Pi Pure Filter Kit (incl. UV Bulb)
$179.00This filter set is designed for the Zoi Iota 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 alkaline filter,...DFK-Pi$179.00 -
RO Zoi Sigma Pure Filter Kit (incl. UV Bulb)
$209.00This filter set is designed for the Zoi Sigma Pure system. The standard size filters work in most reverse osmosis systems available as well. The kit includes a 5 micron sediment filter, a GAC filter, a 5 micron carbon block filter, a replacement bulb for...DFK-Sigma$209.00 -
20-inch Big Blue 2 Stage Filter Kit with Sediment Filter & Catalytic Carbon/KDF-85 Filter
$179.00The 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 Catlytic Carbon/KDF-85 filter contains 4.0 lbs. of KDF-85...RFK2-4520-SD85$179.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC, and Carbon Block Filters
$166.00Replacement filter set for 3 stage Big Blue 20" filter system. Includes the carbon block filter, GAC (granular activated carbon) filter, and sediment filter. Filters need replaced at least once a year, every 6 months is average for most homes...RFK3-4520-SDGCCB$166.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF55, and Carbon Block Filters
$169.00Replacement filter set for 3 stage Big Blue 20" filter system. Includes the carbon block filter, GAC/KDF55 filter, and sediment filter. Filters need replaced at least once a year, every 6 months is average for most homes. Product Features 20"...RFK3-4520-SD55CB$169.00 -
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 -
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 -
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 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 -
20-inch Big Blue 2 Stage Filter Kit with Activated Alumina & KDF 55
$219.00Replacement filter set for the 2 stage Big Blue 20" filter system includes activated alumina filter and radial flow carbon. The activated alumina filter reduces or removes fluoride and arsenic in your water without adding anything harmful. The radial...RFK2-4520-55AA$219.00 -
20-inch Big Blue 2 Stage Filter Kit with Sediment and Bone Char
$189.00Standard 4.5-inch x 20-inch filters 5 micron sediment filter Bone char carbon filter Reduced sediment, tastes, odors, chemicals, fluoride, arsenic, radioactive particles, and most trace heavy metals Typically lasts 6-12 months in most...RFK2-4520-SDBC$189.00 -
20-inch Big Blue 2 Stage Filter Kit with Catalytic Carbon/KDF-85 and Radial Flow Carbon
$219.00Standard 4.5-inch x 20-inch filters Catalytic carbon/KDF 85 Radial Flow Carbon Reduces iron, hydrogen sulfide, heavy metals Reduces Chlorine, chemicals, tastes, and odors Radial flow filter to minimize flow restriction 6-12 month filter...RFK2-4520-85RF$219.00 -
3 Stage Big Blue Filter Kit 4.5" x 20" Sediment, pH, Radial Flow Carbon
$169.005-micron sediment filter pH neutralizing filter Radial flow carbon filter Standard 4.5-inch x 20-inch size Replacement filter kit for 3-stage Big Blue systems includes a sediment filter for dirt and particulates, pH filter for acidic water, and a...RFK3-4520-SDpHRF$169.00 -
20-inch Big Blue 2 Stage Filter Kit with Sediment & Matrikx Pb1 Filters
$179.00Replacement filter set for the 2 stage Big Blue 20" filter system includes sediment and Matrikx Pb1. Product Features 20" BB Sediment 5 micron Big Blue sediment filter for sand, sediment, and particulates 20" BB Matrikx Pb1 0.5 Micron...RFK2-4520-SDPb$179.00 -
20-inch Big Blue 2 Stage Filter Kit with Dual DI Filters
$169.00Replacement filter set for the 2 stage Big Blue 20" filter system includes two DI filters. Product Features 20" Big Blue DI Big Blue Deionization filter for ultra pure water Second 20" Big Blue DI Second Big Blue Deionization filter for...RFK2-4520-DIDI$169.00