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how to replace sand in hayward pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Replace Sand in Hayward Pool Filter

If you're a pool owner, you're likely aware of the importance of maintaining your pool's filtration system. One essential part of a pool's filtration system is the sand filter. Hayward is a well-known brand in the pool industry, and many pool owners choose to use their sand filters. Over time, the sand in your pool filter will become dirty and require replacement. In this article, we will go through a step-by-step process on how to replace sand in Hayward pool filter.

Why Replace Pool Filter Sand?

Before we jump into the process of replacing the pool filter sand, let's discuss why it's essential to replace it. Over time, dirt, oils, and other impurities accumulate in your pool, and the filter sand will trap those particles. As a result, the sand becomes dirty and less efficient, which will impact the performance of your pool's filtration system. Replacing the filter sand can help to ensure that your pool is clean, clear, and safe for swimming.

Preparing to Replace Sand in Hayward Pool Filter

Before proceeding with replacing the sand, it is crucial to follow some necessary precautions. Always make sure to turn off the pool pump and filter system to ensure that no water is flowing through the system. To prevent any accidents, it is also essential to unplug any electrical connections to the pool filter.

Removing Old Filter Sand

The first step in replacing the filter sand is to remove the old sand from the filter. To do this, you will need to take off the filter cover and empty sand from the tank using a filter sand scoop or a plastic scoop shovel. Take your time and make sure that you remove all of the old sand from the filter. Once you've removed all the sand from the filter, use a hose to rinse out any remaining dirt or debris.

Replacing with New Sand

After removing the old filter sand, it's time to add new sand back into the filter. The amount of sand you will need to add depends on the size of your pool filter. Consult your pool filter instruction manual or contact Hayward customer service to determine how much sand you should add.

Pour the new sand slowly and carefully into the filter and make sure that the standpipe at the center of the filter stays in position while adding the sand. Hayward pool filters typically use #20 silica sand, available at most pool supply stores.

Final Steps

After adding new sand to your pool filter, it is essential to check for any leaks in the system. Tighten any loose fittings or ensure that the O-ring on the filter cover is seated properly. Reconnect any electrical connections that you disconnected earlier. Finally, turn on your pool filter system and check to see if it is operating correctly.

Benefits of Replacing Filter Sand

Replacing your pool filter sand at least every three years is essential in maintaining your pool's cleanliness and safety. Old, dirty sand will drastically reduce your pool's filtration system's functionality, which can lead to expensive repairs or replacements. Healthy pool water is crucial to the longevity of your pool equipment and protecting individuals who swim in it.


Replacing filter sand in a Hayward pool filter is a simple process that can be completed by most pool owners. It's essential to give plenty of time and attention to removing all of the old filter sand and properly installing the new sand. Remember to take necessary precautions, and don't hesitate to reach out to Hayward or a professional pool maintenance company for assistance. With good care, your Hayward pool filter will provide you with clean and safe pool water for many years to come.


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