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Hot tub filter replacement

By PoolFiltersNow editors · Updated · About our data

Spa filters work harder than pool filters: hot water, oils and lotions clog them fast. Most need replacing about every 12-24 months, and cleaning every few weeks.

Finding the right spa filter

  1. Look for a part number on the end cap (OEM, Pleatco, Unicel or Filbur).
  2. Note your spa brand and model, but many brands use the same few cartridges.
  3. Measure length, outside diameter and both ends: spa cartridges often have threaded ends or handles that must match.

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Care schedule

Task How often
Quick rinse Every 1-2 weeks
Chemical soak / degrease Monthly or when rinsing isn’t enough
Replace About every 12-24 months

Tips

  • Keep a spare so you can swap and let one dry.
  • Shower before soaking to cut oils.
  • If the water turns cloudy quickly after cleaning, the filter is probably due.

Frequently asked questions

Can I use a different brand of spa filter?

Yes: aftermarket filters from Pleatco, Unicel and Filbur are designed as direct replacements. Match the dimensions and ends exactly.

Questions from readers

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