how to bleed air from hayward pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer


If you're a pool owner, you're probably aware of the importance of maintaining your pool filter. Pool filters are essential because they help to remove contaminants from the water and ensure that it's safe for swimming. However, one common issue that pool owners often face when it comes to pool filters is air getting trapped inside the filter. Air pockets in the filter can cause the water flow to slow down, reducing the effectiveness of the filter. In this article, we will discuss how to bleed air from a Hayward pool filter.

What is a Hayward pool filter?

A Hayward pool filter is a type of pool filter that is specifically designed to be used with Hayward pool systems. They are high-quality filters that are known for their durability and efficiency. They are available in various sizes and types, including sand filters, cartridge filters, and DE filters.

What causes air to get trapped in a pool filter?

Air pockets in a pool filter can be caused by several factors. One of the most common causes is improper installation or maintenance of the pool filter. If the filter isn't installed correctly, it may not be able to expel air from the system, causing air bubbles to become trapped inside. Another common cause is a clogged or dirty filter. If the filter is clogged, it may not be able to pull water through the system, resulting in air bubbles becoming trapped.

How to bleed air from a Hayward pool filter

Step 1: Turn off the pool pump

The first step to bleeding air from a Hayward pool filter is to turn off the pool pump. This is an essential step because it ensures that the pool pump won't introduce more trapped air into the system while you're trying to remove it.

Step 2: Locate the air relief valve

The next step is to locate the air relief valve. This valve is usually located on the top of the pool filter, and it's designed to release any trapped air in the filter. You may need to consult your owner's manual to find the exact location of the air relief valve.

Step 3: Position a bucket underneath the air relief valve

Before you begin bleeding the air out of the filter, you'll need to position a bucket underneath the air relief valve. This will catch any water that may come out of the valve when you release the air.

Step 4: Open the air relief valve

Once you've positioned the bucket underneath the air relief valve, you can begin bleeding the air out of the filter. To do this, you'll need to open the air relief valve. Turn the valve counterclockwise until you hear a hissing sound. This sound indicates that the air is being released from the filter.

Step 5: Wait until water starts to flow out of the air relief valve

Continue to hold the valve open until you start to see water flowing out of the valve. This indicates that all of the air has been purged from the filter, and the system is operating correctly.

Step 6: Close the air relief valve

Once water is flowing out of the valve, you can close the air relief valve. Turn it clockwise until it's tight.


Bleeding air from a Hayward pool filter is relatively simple, provided you follow the above steps. It's essential to bleed the air out of the filter regularly to ensure that your pool is always ready for swimming. If you're still having problems with air getting trapped in your pool filter, it's always best to consult an expert in pool maintenance.


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