Pentair Water filters
Find the right replacement Pentair or Pentek water filter cartridge for your system. Shop by part number and other keywords by using the search bar below.
About Pentair Replacement Filter Cartridges
Pentair is one of the largest manufacturers of residential and commercial water treatment equipment, and Pentek is its dedicated line of replacement water filter cartridges. Together, Pentair and Pentek cartridges are used in whole-house, under-sink, and reverse osmosis (RO) systems, and are built to industry-standard dimensions (2.5" x 10", 2.5" x 20", 4.5" x 10" Big Blue and 4.5" x 20" Big Blue) so they fit most filter housings regardless of the system brand. Sediment filters, available in polypropylene, string wound, pleated and dual gradient density designs, capture particles such as sand, silt and rust; a lower micron rating filters finer particles but will load up faster on dirty water. Carbon filters reduce chlorine, taste and odour, with carbon block cartridges offering finer filtration and radial flow or granular activated carbon (GAC) cartridges better suited to the higher flow rates of whole house systems.
Selecting the correct replacement starts with the part number printed on your existing cartridge, or its length, diameter and micron rating. Replacement intervals typically range from 3 to 12 months; sediment filters are due when water pressure drops, and carbon filters when chlorine taste or odour returns. Aquatell has specialized in residential water treatment for over 20 years, and our expert team can help confirm the right Pentair or Pentek cartridge for your system.
Pentair Replacement Filter Reviews
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