How Do You Clean Hot Tub Filters?

As a new hot tub owner, you are probably aware that the filter in your hot tub will need regular cleaning to ensure great performance, clean water and help increase the lifespan of your unit. But you might not know how or how often you need to be cleaning your filter. In the article below, we will discuss what needs to be done each week, month and every few months so that you know how you can keep your filter clean and working properly.

Your hot tub filter is comprised of three main components, which is important to know prior to discussing how your filter needs to be cleaned.

Core – The core is the main internal part of the filter. The core provides a potent force of water flow and needs to be able to handle the integrity of the overall filter, otherwise the water flow will be impacted.

Media – The media is the fabric-like pleated exterior substance covering the filter. Water passes through the media, where dirt and debris become trapped.

End Caps – Plastic material at each filter end which attaches the filter to the spa’s plumbing.

Hot tub filters do need to be replaced every several years. Signs that your filter needs to be replaced can include damage to the media or end caps or discoloration. Make sure that you always keep your filter properly maintained, in some circumstances a dirty or neglected filter could void your warranty.

Weekly Cleaning List

Every week remove the filter out of your hot tub and take a few minutes to rinse with a garden hose or your sink faucet. Spread apart the media pleats to remove trapped hair, dirt and debris. Lay your filter on a flat surface and allow to completely dry before putting back into your spa.

Monthly Cleaning List

Every month, you will need to remove your filter and spray with a chemical rinse specifically designed for hot tubs. It is a good idea to buy a bottle when you purchase your hot tub so that you will have it on hand for when you need it. Take your filter off, spray down with the cleaner and let it sit for 15 – 20 minutes. Be sure to really rinse well – if any spray cleaner has been left on the filter it will cause foam in your hot tub water as soon as you put it back. Allow to fully dry before replacing.

Quarterly Cleaning List

Every three to four months, the water from your spa should be changed. This is also the perfect time to do a deep filter cleaning, otherwise known as a chemical soak. Remove the filter and place in the specialized chemical solution recommended by your hot tub dealer and let soak for 12 to 24 hours. Gently wash all of the solution off and allow to dry before replacing.


Be sure that you never use routine household cleaning products, such as bleach, to clean your filter. Also, never put your filter in your dishwasher to be cleaned. Both scenarios can instantly ruin your filter,

Now that you understand how to clean your hot tub filter as well as how often, you’re prepared to jump in and enjoy a warm, bubbly soak. To learn more about caring for your hot tub, download a hot tub buyer’s guide.

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