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how to clean a hayward cartridge pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Clean a Hayward Cartridge Pool Filter

Nothing beats the feeling of taking a dip in a sparkling clean pool on a hot summer day. However, maintaining a clean pool requires more than just regular chemical treatments. The pool filter plays a crucial role in keeping your pool water clean and clear by removing debris, dirt, and other impurities from the water. Hayward cartridge pool filters are a popular choice among pool owners due to their exceptional filtration performance and ease of maintenance. In this article, we will guide you on how to clean a Hayward cartridge pool filter and keep your pool water crystal clear and inviting for swimmers.

What is a Hayward Cartridge Pool Filter?

Hayward cartridge pool filters are designed to efficiently capture debris and impurities from pool water using a reusable, pleated cartridge filter element. These filters are made of durable materials and are easy to install, operate, and maintain. Hayward cartridge pool filters come in different sizes to fit different pool sizes and may require different cleaning methods depending on the degree of pool usage and environmental conditions.

Why Clean a Hayward Cartridge Pool Filter?

Cartridge pool filters are known for their superior filtration efficiency and low maintenance requirements. However, over time, the filter cartridge can become clogged with dirt, debris, and other impurities, reducing its filtering capacity and increasing the pressure on the filter system. If not cleaned regularly, a dirty filter can lead to poor water circulation, reduced pool clarity, and reduced water flow rates, which can damage your filter system or even your pool's pumps and other equipment. Therefore, regularly cleaning your Hayward cartridge pool filter is crucial to ensure optimal pool performance and extend the lifespan of your filter system.

How to Clean a Hayward Cartridge Pool Filter?

Cleaning a Hayward cartridge pool filter is a straightforward process that can be done in a few simple steps. Here's a guide for cleaning your cartridge pool filter:

Step 1: Turn off the pool pump

Before cleaning your cartridge pool filter, turn off the pool pump to prevent accidents and ensure a safe cleaning process. Wait for the system to cool off before you start.

Step 2: Remove the Filter Cartridge

To access the filter cartridge, open the filter cover and remove the cartridge carefully. Be gentle when removing the cartridge to avoid damaging it or the filter system.

Step 3: Rinse the Filter

Using a garden hose or a pressure washer, rinse off the filter cartridge with clean water. Direct the water from top to bottom and rotate the cartridge to ensure every part is thoroughly cleaned. If the cartridge has visible debris or stains, you can also use a filter cleaner or degreaser to help dissolve the dirt and grime. However, make sure to read the label and follow the instructions carefully to avoid damaging the cartridge.

Step 4: Soak the Filter

If the filter cartridge is heavily soiled or has been in use for an extended period, you can also soak it in a filter cleaning solution or a mixture of water and muriatic acid for a few hours. This will help dissolve stubborn stains and buildup and restore the cartridge's filtering capacity. However, ensure you follow the manufacturer's instructions and wear protective gloves and goggles when handling chemicals.

Step 5: Reinstall the Filter

After rinsing and soaking, rinse the cartridge again with clean water to remove all traces of chemicals and contaminants. Let it dry thoroughly before reinserting it into the filter housing. Make sure the cartridge is correctly aligned and secured in place before closing the filter cover.

Step 6: Restart the System

Turn on the pool pump and observe the filter pressure gauge. If the pressure is within the recommended range, you have successfully cleaned your filter cartridge. Enjoy a swim in your sparkling clean pool!

Tips for Cleaning a Hayward Cartridge Pool Filter

1. Regular cleaning: Clean your cartridge pool filter every four to six months, depending on pool usage and environmental factors. This will ensure optimal filtration and extend the cartridge's lifespan.

2. Inspect the cartridge: Before cleaning your cartridge pool filter, inspect the cartridge for visible damage or wear and tear. Replace a damaged or worn cartridge to avoid compromising your filter system's efficacy.

3. Use the Right Cleaning Solutions: Use only recommended cleaning solutions and chemicals when cleaning your Hayward cartridge pool filter. Using the wrong cleaning solution can damage the cartridge and affect your filter system's performance.

4. Keep Spare Filters: It's a good idea to keep a spare filter cartridge on hand for quick replacements when cleaning your dirty cartridge. This ensures uninterrupted pool service and avoids downtime when cleaning or replacing filters.


Cleaning your Hayward cartridge pool filter is an essential part of pool maintenance that can improve water quality, extend the filter system's lifespan, and ensure optimal pool performance. By following the above steps and tips, you can clean your filter cartridge effectively and safely and enjoy a sparkling clean, inviting pool all year round!


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