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how to change a pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer


Pool filters play a crucial role in keeping the water in your swimming pool clean and clear. However, over time, they can become clogged or dirty, which can reduce their overall efficiency. To ensure the best performance from your pool filter, it's essential to know how to change it. In this article, we'll provide a step-by-step guide on how to replace your pool filter.

Part 1: Understanding the Different Types of Pool Filters

Before you begin, it's essential to know which type of pool filter you have. There are three main types of pool filters:

1. Sand Filters: These filters use sand to remove dirt and debris from the water. They are the most commonly used type of pool filter.

2. Cartridge Filters: These filters use a paper or fabric cartridge to trap debris.

3. Diatomaceous Earth (DE) Filters: These filters use a fine powder made from crushed fossils to remove particles from the water.

Each type of filter has its own unique maintenance requirements. For this article, we will focus on changing a sand filter, as it is the most common type of pool filter.

Part 2: Gathering the Necessary Tools and Supplies

Before you begin, it's essential to gather the necessary tools and supplies to replace your pool filter. Here's what you'll need:

1. A new pool filter: Make sure you purchase the correct size and type of filter for your pool.

2. A filter removal tool: Depending on your filter, you may require a specialized tool to remove it.

3. A wrench: You will need a wrench to loosen and remove any bolts or clamps holding the filter in place.

4. Teflon tape: This will be used to seal any connections or joints.

5. A bucket: You'll need a bucket to catch any water that spills during the filter replacement.

6. A hose: You'll need a hose to wash out the old filter and flush out the new one.

Part 3: Removing the Old Filter

Now that you have all the tools and supplies you need, it's time to start changing your pool filter. Here's how to do it:

1. Turn off the pump: Before you start, make sure to turn off the pump and the power to the pool.

2. Open the filter: Remove any bolts or clamps that are holding the filter in place. Depending on your filter, you may need a specialized tool to loosen the clamps.

3. Remove the old filter: Carefully lift the old filter out of its housing and place it in a safe area.

Part 4: Installing the New Filter

Now that you have removed the old filter, it's time to install the new one. Here's how to do it:

1. Clean the housing: Use a hose to wash out the housing and ensure it's free of any debris.

2. Install the new filter: Carefully place the new filter in the housing, making sure it's securely in place.

3. Reconnect the hoses: Use Teflon tape to seal any connections or joints, and then reconnect the hoses to the filter.

4. Turn on the pump: Slowly turn the pump back on and check for any leaks. If everything looks good, you're done!

Part 5: Maintaining Your Pool Filter

Congratulations, you have successfully changed your pool filter! However, it's important to remember that your filter will require regular maintenance to ensure it continues to work efficiently. Here are some tips to keep your filter running smoothly:

1. Clean the filter regularly: Depending on usage, it's essential to clean the filter at regular intervals. For a sand filter, you'll need to backwash it every 4-6 weeks.

2. Replace the filter as needed: Over time, your filter will start to wear out and lose its efficiency. Make sure to replace it as needed to keep your pool water clean and clear.

3. Monitor your water chemistry: Keeping your water chemistry balanced will help prolong the lifespan of your filter. Make sure to test your water regularly and adjust the chemicals as needed.


Knowing how to change your pool filter is crucial to maintaining a clean and clear pool. With the right tools and supplies, it's a simple process that can be done at home. Use this guide to help you replace your pool filter and keep your pool in top shape all summer long.


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