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how do you backwash an above ground pool filter


Introduction: The Importance of Backwashing an Above Ground Pool Filter

Maintaining a clean and clear pool is essential to ensure a safe and enjoyable swimming experience. One of the key components of keeping your pool water crystal clear is to ensure your pool filter is working to its optimal level. Over time, the dirt and debris that the filter traps can accumulate, causing a drop in water flow, as well as a decrease in the filtration efficiency. Backwashing, the cleaning process for your pool filter, can help remedy this issue. In this guide, we’ll explore what backwashing is, the benefits of backwashing, and how to backwash an above ground pool filter.

What is Backwashing?

Backwashing is a simple process that can help remove the dirt and debris that gets caught in your pool filter. The process involves reversing the flow of water through the filter, flushing out the trapped particles and debris. This process will help ensure that the filter operates at its optimal level and prevent any potential damage that may occur from clogged filters.

The Benefits of Backwashing Your Above Ground Pool Filter

Backwashing your above ground pool filter offers several benefits that could help improve your pool's overall performance, cleanliness, and longevity. Some of the benefits of backwashing your above ground pool filter include:

1. Improving Filtration Efficiency

When debris and dirt accumulate in your pool filter, it can clog the filter and impact its filtration efficiency. Backwashing cleans the filter, ensuring it operates at optimal efficiency by removing any accumulated debris and restoring maximum water flow.

2. Reducing the Risk of Bacterial Growth

If your pool filter is clogged with debris, it can cause the water to become stagnant and promote bacterial growth. Backwashing clears out the filter, ensuring the water is clean and clear, reducing the risk of bacteria growth.

3. Extending the Lifecycle of the Pool Filter

Clogged filters add undue stress to the pool filter's internal components, reducing its lifespan. Over time, this can result in expensive replacements, repairs, or even cause the filter to fail altogether. Backwashing your pool filter regularly can help extend its lifecycle and save you money in the long run.

How to Backwash Your Above Ground Pool Filter

Before proceeding with backwashing your above ground pool filter, it's essential to check the manufacturer's instructions on how to backwash the specific model of your pool filter. The following are the basic steps to backwashing an above ground pool filter:

1. Turn off the Pump

The first step is to turn off the pool pump. This will prevent discharging dirty water or damaging the internal components of the filter.

2. Adjust the Filter Valve

Adjust the filter valve to the backwash setting. This will redirect the water flow and reverse the water's normal flow, flushing out the debris and dirt accumulated in the filter.

3. Turn on the Pump

Once the filter valve is correctly adjusted, turn the pool pump back on. The water will then flow in reverse and discharge the dirty water from the backwash hose.

4. Monitor the Backwash Hose

Watch the backwash hose, which should be led to the sewer or another appropriate location. Monitor it until the water emerging from the hose runs clear.

5. Rinse and Reset the Filter Valve

Once the water runs clear, switch the filter valve to the rinse setting to flush out any remaining debris in the filter. Repeat the process until the water runs clear again, and then put the filter valve back into the filter position.


Backwashing is an essential process to ensure the optimal performance of your above ground pool filter. It helps remove debris and dirt, ensuring a clean and clear swimming experience. Remember to check the manufacturers' instructions for your pool filter model to ensure you complete the process correctly. By following the steps provided in this guide, you can extend the life of your pool filter and save money in the long run.


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