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Search by brand, part number, or dimensions to find the right match.

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How to measure your filter

Learn About Pool & Spa Filters

Helpful guides to choosing, replacing, and maintaining your filter.
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FAQs

How do I find my pool or spa filter model number?
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Most filter cartridges have a model number printed on the top or bottom end cap. Enter the model number into our Filter Finder for the fastest way to find a compatible replacement.

What if I can't find a model number on my filter?
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You can search by dimensions instead. Measure the filter diameter and length, then use our Dimension Search tool. If you're still unsure, submit photos and our team can help identify the correct replacement.

Are Clarus filters compatible with other brands?
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Yes. Clarus replacement filters are designed to be compatible with many popular pool and spa filter brands, including Hayward®, Pentair®, Pleatco®, Unicel®, Filbur®, Jandy®, Intex®, Bestway®, and more.

How often should I replace my filter cartridge?
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It depends on the filter. Some small spa or inflatable pool filters may need monthly replacement, while larger pool cartridges can last 2–3 seasons with proper care. Replace sooner if water flow drops, cleaning no longer helps, or the filter media shows damage.

What measurements do I need to identify my filter?
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The most important measurements are:

  • Outside diameter
  • Overall length
  • Top opening style
  • Bottom opening style

These measurements can help narrow down compatible replacements.



Can Clarus help identify my filter?
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Yes. If you're unsure which replacement filter you need, submit photos of your filter, equipment label, or existing part number and our team will help identify a compatible Clarus replacement.

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