A Guide to Hot Tub Cartridge Filter Care - Leisurescapes Langley - Langley, Surrey, Maple Ridge BC

A Guide to Hot Tub Cartridge Filter Care
November 07/2023

Owning a hot tub can be a luxurious and relaxing experience, providing a perfect escape from the stresses of daily life. To keep your hot tub water clean and crystal clear, one essential component you need to maintain is the cartridge filter. Regular care of your hot tub cartridge filter (or pool cartridge filter) is crucial to ensure your hot tub functions efficiently and remains a hygienic and enjoyable space. In this blog, we'll guide you through the process of how to care for your hot tub cartridge filters.


Why Cartridge Filters Matter

Cartridge filters are the most common type of filter used in hot tubs because they're effective and easy to maintain. These filters are designed to capture and remove debris, contaminants, and particles from the water as it circulates through the hot tub's filtration system. Over time, these filters can become clogged with impurities, reducing their effectiveness. Proper maintenance is essential to keep your hot tub water clean and clear.

Regular Inspection
To ensure your hot tub cartridge filter operates optimally, perform regular inspections. Check for any visible damage, such as tears or cracks in the filter material. If you find any, it's time to replace the filter. Bad odors may also indicate it is either time to deep clean or replace your spa filter.

Cleaning Routine
Cleaning your hot tub cartridge filter is essential to prevent clogs and maintain water clarity. Here's a step-by-step guide for cleaning your filters:

a. Turn Off the Hot Tub: Before you start, turn off the hot tub and/or unplug it to ensure your safety.

b. Remove the Filter: Locate the cartridge filter within your hot tub's filtration system. It's usually in a canister or housing near the skimmer basket. Carefully remove the filter from its housing.

c. Rinse: Use a garden hose or a specialized filter cleaning tool to rinse off loose debris and dirt from the filter. Rinse from top to bottom to prevent pushing dirt further into the pleats.

d. Soak: Fill a large container with water and a filter cleaning solution. Soak the filter for several hours or as recommended by the cleaning solution manufacturer. This will help break down and remove oils and contaminants that may be trapped in the filter.

e. Scrub: After soaking, use a soft brush or filter cleaning tool to scrub the filter, paying special attention to the pleats. Be gentle to avoid damaging the filter material.

f. Rinse Again: Rinse the filter thoroughly with a hose to remove any remaining cleaning solution and debris.

Filter Replacement
Cartridge filters have a lifespan of approximately one to two years, depending on usage and maintenance. Over time, the filter material may become less effective at trapping contaminants. If you notice that your filter isn't cleaning the water as well as it used to, or if it's damaged beyond repair, it's time to replace it. Always choose a replacement filter that matches your hot tub's specifications and dimensions. It may be convenient to have a spare filter on hand to minimize down time during filter cleaning.

Maintain Water Chemistry
Properly balanced water chemistry is crucial for the longevity of your cartridge filter. Regularly test your hot tub water and adjust the pH, alkalinity, and sanitizer levels as needed. Balanced water chemistry will help prevent scale buildup and prolong the life of your filter. Having your water tested by a professional can help identify potential issues.


Caring for your hot tub cartridge filter is a vital part of maintaining a clean and enjoyable hot tub experience. Regular inspections, cleaning, and, when necessary, replacement of the filter will ensure that your hot tub water remains crystal clear and inviting. By following these simple steps, you can keep your hot tub in excellent condition and enjoy its relaxing benefits for years to come.

For more hot tub tips and advice follow #leisurescapes on social media, or visit our Langley/Surrey store for pool and spa supplies.