Hot Spring Hot Tub Replacement Filters

Hot Spring (made by Watkins Wellness) has used a few distinct cartridge sizes across its product lines, and which one you need depends on whether your tub is a Highlife, a Limelight, or one of the older Classic-series models. Some take a single filter; some take two. The label inside the filter compartment will tell you, and so will the model pages below.

This database has 12 Hot Spring models from 1991 onward. Watkins also sold Tiger River and Hot Spot as separate lines with their own filter sizing, and both have their own pages here. If your tub is older or a less common variant, the part number printed on the existing cartridge is the quickest path to the right replacement.