how to clean cartridge pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

A pool filter is an essential component of a swimming pool system as it helps to keep the water clean and clear. Many pool owners prefer cartridge filters due to their convenience and effectiveness in cleaning. However, cartridge pool filters can start to get clogged up over time, resulting in reduced filtration efficiency. In this article, we will guide you on how to clean a cartridge pool filter and keep it in top condition.

Why cleaning your pool filter is important

Before delving into the specifics of cleaning your pool filter, it's essential to understand why it's crucial to do so. The primary function of a pool filter is to remove dirt, debris, and other impurities from your pool water. When your pool filter becomes clogged with dirt, its filtration efficiency reduces, leading to cloudy and unclean water. A dirty pool filter also becomes a breeding ground for bacteria, which could pose a health risk to swimmers.

When to clean your pool filter

It's recommended that you clean your cartridge pool filter at least once every six months or after every 2,000 hours of use. However, some factors can affect how often you need to clean your pool filter. For instance, if you have a large pool or use it frequently, you may need to clean your pool filter more frequently. Additionally, if there are many trees around your pool or if you experience dust storms, you may need to clean your pool filter more often.

Tools and materials needed

To clean your cartridge pool filter, you will need the following tools and materials:

1. A garden hose with a high-pressure nozzle

2. A bucket

3. Filter cleaner solution

4. Rubber gloves

5. A soft-bristled brush

6. A replacement cartridge (optional)

Step-by-step guide to cleaning your pool filter

Now that you have gathered all the necessary tools and materials, let's dive in and clean your pool filter.

1. Turn off the pool pump and remove the filter: Shut off the power supply to the pool pump to prevent any accidents. Next, remove the filter from its housing by following the manufacturer's instructions.

2. Pre-rinse the filter: Use a garden hose with a high-pressure nozzle to rinse off any loose debris from the filter cartridge. Start from the top of the cartridge and work your way down, spraying water between the fins.

3. Soak the filter cartridge: Fill a bucket with water and add filter cleaner solution as per the manufacturer's instructions. Submerge the filter cartridge in the solution and let it soak for at least 12 hours. This step helps to remove any embedded dirt and oils from the filter.

4. Brush the filter cartridge: After soaking the filter cartridge, use a soft-bristled brush to scrub the pleats and fins. Be gentle to avoid damaging the cartridge. Pay attention to the areas with heavy buildup of dirt and debris.

5. Rinse the filter cartridge: Rinse off the filter cartridge thoroughly with the garden hose. Make sure to remove any dirt or filter cleaner solution residue.

6. Reinstall the filter cartridge: Once you have cleaned and rinsed off the filter cartridge, reinstall it in the filter housing. Ensure that it's correctly oriented and locked in place before turning on the pool pump.

7. Check the pool water: Turn on the pool pump and monitor the water for any cloudiness or dirt. If the water appears unclean, it may be a sign that the pool filter cartridge needs to be replaced.

Maintaining your pool filter

Cleaning your pool filter is just one part of pool filter maintenance. To keep your pool filter in top condition, consider the following tips:

- Inspect the filter cartridge regularly for any damages or signs of wear.

- Replace the filter cartridge every 1-2 years, depending on its condition and usage.

- Keep the pool water chemistry balanced to prevent damaging the filter cartridge.

- Run the pool pump for at least eight hours daily to maintain water circulation and filtration.

In conclusion, cleaning your cartridge pool filter is essential to ensure your pool water remains clean and clear. By following the steps outlined in this article, you can keep your pool filter in top condition and prolong its lifespan.


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