Replacement Filter Compatibility: HTL & Other Hot Tubs

Check a filter by part reference and measurements, not the hot-tub brand name alone. The current cartridge options are listed below.

Compare length, outside diameter, top and bottom fittings and any thread. A cartridge described for another brand may only fit particular models and years. Send photographs if you need a compatibility check.

Browse our main hot-tub filter collection and cartridge cleaner.