Replacement Filters
Now offering yearly filter replacement subscriptions!
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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 -
Big Blue 20-inch Pleated Sediment Filter
$27.0020" Big Blue 5 micron sediment filter Product Features Pleated for high flow and great holding capacity Removes particulates 4.5" x 20" standard big blue replacement size Fits Big Blue housings used on some whole house filter systems Removes...SD-4520-PL50$27.00 -
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 -
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 Slimline Phosphate Filter for Scale Prevention
$79.00The 10" 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 equipment, water...PO-2510$79.00 -
Big Blue 20-inch Sediment Filter - 10-micron
$29.0020" Big Blue 1 micron sediment filter Product Features 10 micron Removes particulates as small as 10 microns Big Blue 20" Fits Big Blue housings used on some whole house filter systems Removes sediment Traps dirt, sand, and particulates Standard...SD-4520-10$29.00 -
20-inch Catalytic Carbon/KDF 85 Filter
$64.00The 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 heavy metals, including lead, mercury, and iron as well as low...CC-2520-85$64.00 -
Nelsen RO Twist Loc 75 GPD RO Membrane Replacement Cartridge
$102.00Replacement 75 GPD RO membrane for Twist-Loc reverse osmosis systems.Twist-Membrane-75$102.00 -
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 -
Big Blue 10-inch Activated Alumina Filter for Fluoride, Arsenic, and Lead
$109.00The Big Blue 10" Activated Alumina filter can be used to replace a current filter or upgrade your current 10" Big Blue filter system. The activated alumina filter reduces lead, arsenic, and fluoride in your water without adding any harmful chemicals or...AA-4510$109.00 -
Big Blue 20-inch Nitrate Filter - Aries AF-20-3610-BB
$279.00Nitrate/nitrite reduction filter Aries brand - made in the USA Standard 4.5-inch x 20-inch filters Aries AF-20-3610-BB Standard Big Blue filter fits standard 4.5-inch x 20-inch housings. Nitrate filter reduces nitrates and nitrites in the water,...NT-4520$279.00 -
20-inch Slimline Phosphate Filter for Scale Prevention
$129.00The 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 equipment, water...PO-2520$129.00 -
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