Replacement Filters
Now offering yearly filter replacement subscriptions!
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Big Blue 20-inch Bone Char Carbon Filter - Reduces or Removes Fluoride, Arsenic, Radioactive Particles, and Toxic Metals
$179.00The Big Blue 20" Bone Char carbon filter can be used to replace a current filter or upgrade from the standard carbon block filter. Along with normal carbon filtration qualities, bone char carbon also reduces or removes nucleotides, fluordie, arsenic,...BC-4520$179.00 -
Big Blue 20-inch Activated Alumina Filter for Fluoride, Arsenic, and Lead
$149.00The Big Blue 20" Activated Alumina filter can be used to replace a current filter or upgrade your current 20" Big Blue filter system. The activated alumina filter removes lower levels of lead, arsenic, and fluoride from your water without adding any...AA-4520$149.00 -
Big Blue 20-inch Catalytic Carbon/KDF 85 Filter
$159.00The 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-4520-85$159.00 -
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 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 -
Big Blue 20-inch AdEdge Bayoxide® E33 Filter for Arsenic
$209.00The Big Blue 20" AdEdge Bayoxide E33 filter is used to reduce arsenic. The filter measures 4.5-inch in diameter and 20-inch long and fits all standard 20-inch Big Blue housings. Product Features AdEdge Bayoxide® E33 Industry leading...AE-4520-E33$209.00 -
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 10-inch Bone Char Carbon Filter - Reduces or Removes Fluoride, Arsenic, Radioactive Particles, and Toxic Metals
$149.00The Big Blue 10" Bone Char carbon filter can be used to replace a current filter or upgrade from the standard carbon block filter. Along with normal carbon filtration qualities, bone char carbon also reduces or removes nucleotides, fluordie, arsenic,...BC-4510$149.00 -
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 -
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 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 -
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