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The use of a cartridge filter in your swimming pool provides you with a cost-effective and efficient way of keeping the water clean and safe. These pool filters are simple to operate, efficient, and environmentally friendly.

Our goal in this article is to examine the different types of cartridge filters, their uses and characteristics, and to give you tips on how to select the best filter to meet your needs.

The different cartridge pool filters

The cartridge pool filter is a type of filtration system widely used in private swimming pools, especially those that are above ground. Its popularity is due to its efficiency, ease of use and maintenance. This filter unit works by using cartridges filled with pleated media that trap dirt and debris as the water passes through them.The filter housing protects the cartridges from damage and maintains the flow of water while maintaining minimal pressure loss.

Which cartridge filter is best for your pool ?

Cartridge filters come in several types to meet different needs:

  • A single cartridge filter: : The single cartridge filter is recommended for small to medium-sized pools and spas. It is usually comprised of a single filter cartridge that can be easily removed for cleaning or replacement.
  • A filter with multiple cartridges : Designed to be installed in a medium- to large-sized swimming pool, this filter utilizes multiple cartridges for increased filtration capacity. An excellent choice for pools that are frequently used or exposed to heavy amounts of debris and dirt.

How the cartridge pool filter works

Cartridge filters operate according to the principle of mechanical filtration. Several layers of mesh are present in the cartridge to increase its filtration surface. The filter element is made of polyester, nylon, or paper, and is designed to trap dirt and debris in the water.

In order for water to enter the cartridge filter, the pool pump has to draw water in from the pool. Water passes through the cartridge, which acts as a barrier, capturing and retaining debris and fine particles. After the water is filtered, it is returned to the pool via the circulation system.

In this way, the cartridge filter helps to keep the pool clean and ready for use.

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    The price of these filters

    A cartridge filter’s price can differ according to its brand, size, and capacity of filtration. For a basic model suitable for a small or medium-sized swimming pool, you should expect to pay between 50 and 200 euros. The price of larger models or multi-cartridge systems is likelyto range from 200 to 600 euros.

    Additionally, it is important to consider the cost of replacing the cartridge.Replacement cartridges range in price from 20 to 100 euros, depending on the size and brand.As a general rule, this should be done every one to two years, depending on the frequency of use and maintenance.To conclude, cartridge replacement should be considered when budgeting for your pool, as it may be a significant expense.

    How to use a cartridge pool filter

    Cartridge pool filters are very straightforward to use. Upon installation, the filter is automatically linked to the pool’s circulation system. Listed below are the basic steps:

    1. Installation : Generally, the cartridge filter should be fitted after the pump and before the heating system or water treatment device. Install it according to the manufacturer’s instructions. To ensure effective and efficient filtration, it is important to ensure that the cartridge filter is properly connected to the pool’s circulation system. As opposed to sand or other filters, there are no heavy loads to carry.

    2. Operation : Once the cartridge filter is in place, it operates automatically. The filter works continuously as long as the circulation system is running, providing continuous filtration for the pool. Pool water passes through the filter, where debris and particles are captured by the cartridge.

    3. Maintenance : The cartridge filter is designed to be low water consumption equipment. For example, the cartridge filter does not rely on backwashing, which wastes a lot of water. Simply remove and clean the cartridge regularly. Just rinse the cartridge with a garden hose to remove debris and ensure effective pool water filtration. Additionally, a cleaning solution may be necessary to remove mineral deposits, oils, and other contaminants that can be hard to remove with just water.

    4. Cartridge replacement: The filter cartridge should be replaced every 1 – 2 years to ensure the efficiency of the pool filtration system; the service life of this component depends on the use of the pool and the routine maintenance of the filtration system. Furthermore, regular examinations of the filter cartridges are essential for ensuring that the pool’s filtration system continues to perform efficiently.

    Following these basic steps will ensure your cartridge filter is operating efficiently and your pool water is clean.

    Benefits and drawbacks

    There are several advantages to using cartridge filters in swimming pools. The filtering capacity of these filters is superior to that of sand filters.Filtration fineness of cartridge filters generally ranges between 15 and 20 microns, while those of sand filters are typically around 50 microns.

    In addition to this, cartridges can be easily removed for cleaning and do not require backwashing, thereby conserving water.

    As a final point, a cartridge can last from one to two years, depending upon its usage and maintenance.

    However, there are also disadvantages. The use of cartridge filters may not be the most suitable choice for larger pools or those exposed to high debris levels, since they are more time-consuming to maintain.

    As well, although cartridges are relatively easy to clean, the process can be quite labor-intensive. Additionally, cartridge filters can be more expensive than other types of filter, and they require more frequent replacement. There are some skimmer accessories that retain impurities before the pre-filter of the pump. Consequently, filtration finesse is improved, and filter cartridge maintenance is reduced.

    What to look for when choosing a cartridge pool filter

    There are several factors to consider when choosing a cartridge filter. Firstly, it is important to consider the size of your pool. As a general rule, the larger the pool, the more powerful the filter will be.Consider selecting a filter that has a capacity appropriate to the size of your swimming pool.

    The second consideration is the debris load. The installation of high-capacity cartridge filters may be appropriate if your pool is often exposed to a lot of debris (leaves, dirt, etc.).

    The third factor is the frequency with which you use your pool. In the case of a frequently used pool, a cartridge filter with a higher capacity may be more appropriate.

    The last aspect is the budget. Generally, cartridge filters are less expensive than diatomaceous earth filters or filters using recycled glass media. However, it is also necessary to consider the cost of cartridge replacements.

    Cartridge pool filter maintenance

    The maintenance of cartridge filters is straightforward, as we discussed earlier. Regular cartridge cleaning is required to remove accumulated debris, but no backwashing is necessary. Generally, a simple rinse with tap water will suffice. A special cleaning solution may be necessary sporadically to remove oils and residues that may accumulate on the cartridge.

    Most manufacturers offer two-year cartridge service life.

    Simply put, cartridge filters are a simple, effective, and easy-to-maintain method of maintaining a clean and clear pool water. As long as they are properly selected and maintained, they can be used effectively for many years to come.



    In conclusion, cartridge filters for swimming pools have proven to be an effective and economical filtration solution. As there are many types of filters available, it is essential to choose one appropriate for your pool environment.

    Selecting the appropriate filter and installing it properly are essential steps to ensure pool water remains clean and healthy. The use of professional guidance is highly recommended if you are uncertain how to proceed.

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