How Often Should You Clean Your Pool Filter?

Types Of Pool Filters & When They Need To Be Cleaned.

We will discuss the importance of regular pool filter maintenance and dive into the factors that determine how often you should clean your pool filter. We’ll explore different types of filters such as cartridge filters, sand filters, and DE filters, and how their cleaning requirements may vary based on factors like filter size, pool environment, and debris accumulation.

By understanding the maintenance needs of each filter type, you can ensure optimal filtration, extend the lifespan of your equipment, and enjoy crystal-clear pool water. Let’s get started!

Cartridge Filters

Cartridge filters are popular choices for pool owners due to their effectiveness and ease of use. However, the frequency of cleaning your cartridge filter depends on its size and the surrounding environment. Typically, a cartridge filter should be cleaned every three to four months, but this can vary based on factors such as pool size, vegetation, debris, and sunscreen usage. It’s essential to follow the manufacturer’s recommendations but remember not to exceed six months between cleanings.

We’ll provide some general guidelines based on different cartridge filter sizes:

a. Larger Cartridge Filters (around 460 square feet): Clean every three to four months, considering environmental factors and debris accumulation.

b. Medium-sized Cartridge Filters (100 square feet): Clean every couple of weeks or weekly, depending on the pool environment.

c. Smaller Cartridge Filters (200 square feet): Clean every couple of weeks up to a month, with regular monitoring of pressure levels.

Sand Filters

Sand filters utilize a bed of sand as the filtration medium and offer effective cleaning capabilities. While sand filters require less frequent cleaning compared to cartridge filters, it’s crucial to be mindful of the filter’s condition and pressure levels. Typically, sand filters can go three to five years before requiring cleaning.

However, the cleaning interval can be influenced by the type of filter media used, pool surroundings, and overall pool maintenance. Regular backwashing (flushing out debris) every few weeks using the multi-port valve can help maintain optimal filtration efficiency.

DE Filters

DE (Diatomaceous Earth) filters employ grids coated with a fine powder called DE for superior filtration. DE filters differ from cartridge and sand filters, as they don’t have cartridges but instead use grids. Cleaning a DE filter is recommended every three to four months, similar to a cartridge filter.

The presence of a multi-port or backwash valve in DE filters allows for periodic system flushing and recharge with DE powder. This feature can help extend the time between full cleanings. As with other filters, the cleaning frequency should be adjusted based on the pool environment and usage.

So, How Often Should I Clean My Pool Filter?

Regular cleaning and maintenance of your pool filter are essential for optimal filtration and the longevity of your pool equipment. Understanding the specific requirements of your filter type, such as cartridge filters, sand filters, and DE filters, is crucial for determining the cleaning intervals. Remember to consider factors like filter size, pool environment, and debris accumulation when establishing a maintenance schedule.

By following these guidelines, you’ll enjoy clean and sparkling pool water while minimizing equipment strain. For more specific recommendations, always consult the manufacturer’s instructions or seek advice from a professional pool service company. Happy swimming!

Note: It’s important to remember that pool maintenance can vary based on individual circumstances and equipment specifications. The information provided in this blog post is a general guide, and it’s recommended to consult with pool professionals or refer to manufacturer guidelines for precise instructions tailored to your specific situation.

Get a FREE quote

Looking to build a brand new swimming pool or add a spa or water feature to your existing pool?  Check out our fantastic pool designs at