How often should I clean or replace the hot tub filter?

How often should I clean or replace the hot tub filter?

A clean filter is one of the most important parts of keeping your hot tub water clear and easy to maintain. When the filter gets clogged with oils, dirt, and debris, your water quality drops fast. The good news is that a simple cleaning schedule can keep everything running smoothly.

How Often to Clean Your Filter

Your filter works nonstop, so rinsing it regularly makes a big difference. A quick rinse only takes a few minutes and helps prevent buildup from turning into a bigger problem.

Most spa owners follow this routine:

  • Weekly: Rinse the filter with a garden hose

  • Monthly: Soak the filter in a dedicated filter cleaner

  • Every 3–4 months: Rotate in a second clean filter or give it an extended deep clean during a water change

If your hot tub gets lots of use — or you host guests often — your filter may need attention more frequently. Oils from sunscreen, lotions, and sweat build up faster than many people expect.

When to Replace the Filter

Hot tub filters usually last 12 to 24 months, depending on quality and how well you maintain them. Some signs your filter might be ready for replacement include:

  • Cloudy water even after shocking

  • Needing more chemicals than usual

  • Reduced jet power or weaker water flow

  • Visible wear, fraying, or broken pleats

If your water starts looking “tired” despite regular cleaning, it often means the filter fibers are worn out and can’t trap debris like they used to.

Why Filter Maintenance Matters

Keeping your filter in good shape does more than just clear the water. A clean filter helps your system run efficiently and protects your pump and heater from strain. Even rinsing it once a week can extend the life of your equipment and keep maintenance costs down.

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.