how to change sand in a pentair pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Change Sand in a Pentair Pool Filter

Swimming pools are a great way to cool off during the hotter months of the year, but they require regular maintenance to ensure they remain clean and ready for use. One of the key components of a healthy swimming pool is an efficient pool filter, which helps to remove debris and other contaminants from the water. Pentair pool filters are among the most popular pool filters on the market, but they require regular maintenance to stay in good working order. In this article, we’ll explain how to change the sand in a Pentair pool filter, so you can keep your pool clean and healthy all season long.

1. Why Change the Sand in Your Pentair Pool Filter?

Over time, the sand in your Pentair pool filter can become clogged with debris and other contaminants, reducing its effectiveness at filtering the water. When this happens, you may notice that your water is cloudy, or that your filter is struggling to keep up with the demands of your pool. Changing the sand in your Pentair pool filter is a relatively simple process that can help to restore its efficiency and effectiveness, ensuring that your pool remains clean and ready for use.

2. Gather the Necessary Materials and Tools

Before you begin changing the sand in your Pentair pool filter, you’ll need to gather all the necessary materials and tools. You’re going to need:

- A replacement bag of pool filter sand

- A plastic bag or bucket for removing the old sand

- A garden hose

- A screwdriver or wrench

- Teflon tape (optional)

3. Turn Off the Power to Your Pool Pump

The first step in changing the sand in your Pentair pool filter is to turn off the power to your pool pump. This will ensure that no water is flowing through the filter while you work on it, preventing any accidents or injuries.

4. Open Your Pentair Pool Filter

Next, you’ll need to open your Pentair pool filter. This will require the use of a screwdriver or wrench, depending on the model of your filter. You may also need to use Teflon tape to make sure that the joints are properly sealed.

5. Remove the Old Sand

Carefully remove the old sand from your Pentair pool filter and place it in a plastic bag or bucket. Be sure to dispose of the old sand properly, as it may contain contaminants that could be harmful to people or the environment.

6. Inspect the Filter Laterals

While you have your Pentair pool filter open, take the time to inspect the filter laterals (the tubes that run through the sand) for damage or wear. If you notice any cracks or other signs of damage, you’ll need to replace the laterals before continuing.

7. Add the New Sand

Once you’ve removed the old sand and inspected the laterals, it’s time to add the new sand. Be sure to use the correct type of sand for your Pentair pool filter, as using the wrong type can lead to poor performance or damage to the filter.

8. Reassemble Your Pentair Pool Filter

Once you’ve added the new sand, it’s time to reassemble your Pentair pool filter. Make sure that all the joints are properly sealed and that the filter is secure before turning your pool pump back on.

9. Test Your Pool

After you’ve changed the sand in your Pentair pool filter, it’s a good idea to test your pool to make sure that everything is working properly. Check the water for clarity and use testing strips to check for proper pH and chlorine levels.


Changing the sand in your Pentair pool filter is an important maintenance task that can help to keep your pool clean and healthy. By following these simple steps, you can ensure that your filter is working properly and that your pool is ready for use whenever you want to take a dip. If you’re ever unsure about any aspect of pool maintenance, be sure to consult with a pool professional to avoid any potential problems or accidents.


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