Replacement Filter Kits
Now offering yearly filter replacement subscriptions!
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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 -
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 -
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 -
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 -
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 -
2 Stage Big Blue Filter Kit 4.5" x 20" Bone Char and Radial Flow Carbon
$229.00Replacement or upgrade for standard Big Blue systems Bone Char Carbon filter Radial Flow Carbon filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters. Bone char carbon is typically used to reduce fluoride, arsenic, radioactive...RFK2-4520-BCRF$229.00 -
Replacement Filter Kit for Merlin and PRF systems
$52.00Replacement Filter Kit Kit includes both the carbon prefilter and inline post filter Standard carbon prefilter measures 17" x 2 3/4" Inline post filter with 3/8" quick connect fittings measures 10" x 2 3/4" Prefilters on the Merlin and Pentair...MRO-FK$52.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, Activated Alumina, and Bone Char
$329.003-stage replacement filter kit with sediment, activated alumina, and bone char for standard Big Blue carbon filter. Product Features 20" BB Sediment Filter The 5 micron sediment filter is a 100% polypropylene filter and contains graded density...RFK3-4520-SDAABC$329.00 -
10-inch Big Blue 2 Stage Filter Kit with Radial Flow Carbon and Sediment
$68.00Replacement filter set for 2 stage Big Blue 10" filter system. Includes a radial flow carbon filter and sediment filter. Filters need replaced at least once a year, every 6 months is average for most homes. Product Features 10" BB Radial Flow...RFK2-4510-RFSD$68.00 -
2 Stage Big Blue Filter Kit 4.5" x 20" Radial Flow Carbon and Scale Prevention
$279.00Replacement or upgrade for standard Big Blue systems Radial Flow Carbon filter Phosphate Scale Prevention filter Standard 4.5-inch x 20-inch filters Replacement Big Blue filters.The radial flow carbon offers 20-micron sediment filteration as well...RFK2-4520-RFPO$279.00 -
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 -
RFK3-4520-SDPH85
$249.00Replacement filter kit includes 4.5" x 20" sediment filter 4.5" x 20" ph filter 4.5" x 20" GAC/KDF85 filterRFK3-4520-PH85SD$249.00 -
Twist Loc Replacement Filter Kit for Nelsen Reverse Osmosis System - 2 Sets of Replacements
$179.00Quick Change Twist & Loc RO Replacement Filter Kit - Includes two (2) TWIST-SEDIMENT and four (4) TWIST-CARBON cartridges. This will give you a total of TWO replacements for each filter.Twist-Annual$179.00 -
20-inch Big Blue 3 Stage Filter Kit with Sediment, GAC/KDF 85, and Carbon Block
$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 GAC/KDF 85 filter contains 4.0 lbs. of KDF-85 media,...RFK3-4520-SD85CB$235.00