How to Change Your Hot Tub / Spa Filter Cartridge

Keeping your spa water clean and safe starts with a well-maintained filter. Hot tub or spa filter cartridges should be rinsed regularly (about once a week during frequent use) and replaced every 12–24 months, depending on usage, water chemistry, and manufacturer guidelines.

Step-by-Step: Changing Your Spa Filter Cartridge

1. Turn off power to the hot tub
   Always power down the system at the control panel or breaker to ensure safety during maintenance.
2. Locate the filter compartment
   Most spa filters are housed beneath a cover inside the hot tub, often near the waterline or in a skimmer-style compartment.
3. Remove the old filter
   Unscrew or lift out the existing filter cartridge. Take note of its size and position so you can install the new one correctly.
4. Inspect and clean the filter housing
   Check for debris, buildup, or wear in the filter well and rinse it out with a hose if necessary.
5. Install the new filter
   Place the new cartridge into the housing, ensuring it is seated properly and secured according to the spa’s design (some twist in, others drop in).
6. Restart the system
   Replace any covers, then turn the power back on and run the pump to check for proper circulation.
7. Reset maintenance reminders (if applicable)
   Some spas have a filter reminder setting you can reset through the control panel.