how to change hayward pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Change Hayward Pool Filter: A Step-by-Step Guide

Maintaining your pool's performance is crucial to keep it sparkling clean and ready for use anytime. Whether you own a traditional pool or a saltwater one, you need to change the filter once in a while to keep it running smoothly. If you own a Hayward pool filter, this guide will teach you how to change the filter without spending money on a professional.

Why Change Your Hayward Pool Filter?

A pool filter is responsible for filtering dirt, debris, and other contaminants from your pool's water, keeping it clean and hygienic. However, after prolonged usage, the filter becomes clogged with dirt, making it not function well. When a filter is clogged, the pool water becomes murky, and algae may start to grow on the pool surfaces, leading to possible health hazards for swimmers.

Changing your filter is a preventative measure that ensures your pool stays clean with sparkling water all year round. So, it is essential to learn how to change your Hayward pool filter without relying on professional services.

Step-by-Step Guide on How to Change a Hayward Pool Filter

Before proceeding with the filter replacement, gather the necessary tools, which include:

1. Filter wrench

2. Screwdriver

3. Hose pipe

Now, follow these simple steps:

Step 1: Switch off the Pool Pump

Before opening up anything, the first step is to turn off the pool pump. This will ensure the filter and the pump are not holding any water pressure that could cause water spillage.

Step 2: Release the Pressure

Next, you'll need to release the pressure from the Hayward pool filter. To do this, locate the pressure release valve on the filter's top portion, and turn it to the "Open" position. This will release any water pressure that has built up in the system.

Step 3: Open the Filter

Using the filter wrench, loosen the clamp bound around the filter tank. Once it's loose, pull the clamp free and gently lift up the top of the filter away from the bottom to expose the filter cartridge inside.

Step 4: Remove the Old Filter

Once you expose the cartridge, you can quickly remove the old filter. Typically, the filter cartridge will be held in place by a center rod running down the center of the cartridge. Simply lift the cartridge straight up off the rod and dispose of the old filter.

Step 5: Install the New Filter

Insert the new filter cartridge in the same way the old one was installed onto the filter's center rod. Be sure to align the cartridge center hole with the filter's center rod for stability.

Step 6: Close and Tighten

After installing the new filter, all you need to do is close the top part of the filter, ensuring that the cartridge is properly seated. Then, use the wrench to reattach the clamp around the filter tank, tightening it securely.

Step 7: Check for Leaks

Lastly, turn on the pool pump and check for leaks around the filter. Ensure that the pool water is flowing freely into the pool or into the filter from the pool.


Changing a Hayward pool filter is a straightforward process that only requires a few tools and some basic knowledge. Changing your pool filter regularly will save you money in the long run and keep your pool clean and sparkling year-round.


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