how long to backwash pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer


Summer is just around the corner, and with the sun shining brightly and the weather heating up, there's nothing quite like a refreshing dip in your pool. However, maintaining your pool is crucial to ensure that it is always clean and ready for use. One essential part of pool maintenance is backwashing the pool filter. In this article, we will discuss how long it will take to backwash your pool filter, along with some helpful tips to make the process as efficient as possible.

What is Backwashing?

Before we get into how long it will take to backwash your pool filter, let's briefly discuss what backwashing is and why you need to do it. Backwashing is the process of cleaning your pool's filter by reversing the flow of water through it. This helps to remove any dirt, debris, or other contaminants that have built up in the filter, allowing it to operate more effectively.

Why Do You Need to Backwash Your Pool Filter?

Your pool filter plays an essential role in keeping your pool clean and healthy. Over time, dirt, debris, and other contaminants can clog up the filter, reducing its effectiveness. If you don't backwash your pool filter regularly, it will become less efficient and may even stop working altogether, leading to cloudy or dirty pool water.

How Long Does it Take to Backwash a Pool Filter?

The time it takes to backwash your pool filter will depend on several factors, including the size of your pool, the size of your filter, and the speed of your pump. Generally, backwashing your pool filter should take anywhere from 3-5 minutes.

However, it's essential to keep in mind that this is just an estimate. If your filter is particularly dirty, it may take longer to backwash it properly. Alternatively, if you have a smaller pool or filter, the process may take less time.

Tips for Backwashing Your Pool Filter

Now that you know how long it will take to backwash your pool filter let's take a look at some helpful tips to streamline the process.

1. Check Your Pool's Water Levels

Before you backwash your pool filter, make sure to check your pool's water levels. If your water levels are too low, you may damage your pump, so it's important to check them before you begin.

2. Clean Your Skimmer and Pump Basket

Make sure to clean your skimmer and pump basket before you begin backwashing your pool filter. This will help to ensure that the water flow is not interrupted during the process.

3. Know When to Backwash Your Pool Filter

It's important to know when to backwash your pool filter. Generally, you should backwash your pool filter when the pressure on your filter gauge is 8-10 psi higher than when it's clean.

4. Set Your Multiport Valve to Backwash

Once you're ready to start the backwashing process, set your multiport valve to backwash mode, and turn on your pump. Make sure to keep an eye on the water flowing out of your waste line during the process.

5. Rinse Your Filter After Backwashing

Finally, after you've completed the backwashing process, make sure to rinse your filter to remove any remaining debris. This will help to ensure that your filter is operating at maximum efficiency.


Backwashing your pool filter is an essential part of pool maintenance that you cannot afford to skip. While the process can take anywhere from 3-5 minutes, it's important to remember that this is just an estimate. By following the tips outlined in this article, you can help to streamline the backwashing process and ensure that your pool is always clean, clear, and ready for use.


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