Replacement Filter Kits
Now offering yearly filter replacement subscriptions!
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20-inch x 2.5-inch Slimline 3 Stage Filter Kit with Sediment & Two Carbon Block Filters
$79.00Replacement filter set for 3 stage slimline whole house filter system. Includes two carbon block filter and sediment filter. Filters need replaced at least once a year, every 6 months is average for most homes. Product Features 20" Sediment...RFK3-2520-SDCBCB$79.00 -
RO Zoi Theta Pure Filter Kit (incl. UV Bulb)
$109.00This filter set is designed for the Zoi Theta 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 pH filter, an...DFK-Theta$109.00 -
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 Zeta Pure Filter Kit
$119.00Filter set fits standard 6-stage AK drinking water RO systems Product Features 10" 5µ Sediment 5 micron sediment filter for particulate 10" GAC Granular activated carbon for chloramine, tastes, and odors 10" Carbon Block 5-10 micron...DFK-Zeta$119.00 -
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 -
RO/DI Psarion Psi Reef Filter Kit (replaces RFDIFK)
$67.00Filter set fits RO/DI ReefMaster systems. Includes sediment, carbon, full size DI, and inline DI filter. Product Features Replaces RFDIFK Identical product, updated part number 10" 1µ Sediment 1 micron sediment filter for...AFK-Psi$67.00 -
20-inch Big Blue 3 Stage Filter Kit with CatCarb/KDF 85, Activated Alumina, and Sediment Filters
$289.00The 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 GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-85AASD$289.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Radial Flow Carbon Filter
$235.00The 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-SDAARF$235.00 -
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 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF 85, and Radial Flow Carbon
$245.00The 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 GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-SD85RF$245.00 -
Portable RO Mikro Alpha Filter Kit
$38.00This filter set is designed for the Mikro Alpha portable RO system. The inline filters work with most reverse osmosis systems available as well, and includes two inline GAC filters and an inline sediment filter, all with 1/4" quick-connect fittings...PFK-Alpha$38.00 -
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