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Replacement Filter Cartridges for all Spas and Hot Tubs and Pools
Replacement Swimming Pool and Spa Filter Cartridges offers a wide selection of pool filter cartridges and replacement spa filter cartridges for all makes and models. Use our interactive search tools to locate the replacement pool or spa filter cartridge you need. We offer discount prices on all pool and spa filter cartridges and fast shipping.

arrow Find your replacement pool or spa replacement filter cartridge
We will show all cross reference information from Unicel, Pleatco, Filbur, and the Original Equipment Manufacturer as well as all filter cartridge measurements and specifications.

Option 1: Search by Part Number

Option 2: Search by Dimensions
Select a Filter Diameter First
Then Select a Filter Length (Optional)

Option 3: Select a Spa or OEM Manufacturer

How can I tell when a Filter Cartridge needs to be replaced?

With no moving parts or electrical switches to fail, Filters Cartridges do not have a defined end-of-life. Instead media will gradually plug up over time. In a typical spa or hot tub, the culprit that plugs the filter cartridge media is perspiration and body oils combined with soaps, chemicals and very fine particulate. In a swimming pool, the loading is primarily debris along with suntan lotions and organic matter such as algae.

Assuming the Filter is properly maintained and correctly sized to the pump, determining when the Filter Cartridge is exhausted depends primarily upon three factors:
  • Shorter cycle time between cleanings,
  • Low water flow rate and high differential pressure,
  • Catastrophic failure such as a tear in the filter cartridge media or center core collapse.

All three are dependent upon proper pool or spa water chemistry and following a routine maintenance schedule. Filter elements are plastic and should be handled and maintained accordingly.

How do I maximize the life of a filter cartridge?
  • Clean the filter elements per manufacturers cleaning instructions
  • Never use a stiff brush to clean the media
  • Maintain your pool or spa water chemistry in proper balance
  • Alternate two sets of filter cartridges when cleaning

For swimming pools, clean the cartridge when filter canister pressure reaches 8 PSI above the initial system or new cartridge starting pressure. For spas, establish a routine cartridge cleaning schedule based on the amount of spa usage. An ideal routine would be at least once per month unless clear cleaning instructions are provided by the Original Equipment Manufacturer.