how to change the sand on a hayward pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Change the Sand on a Hayward Pool Filter

If you own a pool, you know the importance of keeping it clean and well-maintained. One of the crucial components of your pool system is the filter, which removes dirt and debris from the water. Over time, the sand in your filter can become clogged and the filter will no longer work effectively. When this happens, you need to change the sand. Here's a step-by-step guide on how to change the sand on a Hayward pool filter.

1. Determine the amount of sand you need

The first thing you need to do is determine how much sand you will need to refill your filter. The amount of sand you need will depend on the size of your filter. Refer to the manual that came with your filter or look up the specifications online to find out how much sand your filter requires.

2. Turn off the pump and relieve pressure

Before you start working on your filter, you need to turn off the pump and relieve the pressure in the system. Turn off the power to the pump and set the valve to the "backwash" position. This will allow the water to drain out of the filter and relieve the pressure.

3. Remove the filter valve

Next, you need to remove the filter valve. This is the piece that connects the filter to the rest of the pool system. It is typically held in place by two or more screws. Use a screwdriver to remove the screws and lift the valve off the filter.

4. Remove the sand

With the valve removed, you can now access the sand in the filter. Carefully scoop the sand out of the filter using a plastic cup or scoop. Be sure to dispose of the old sand properly.

5. Clean the filter

Once you have removed all the sand, you need to clean the filter. Use a hose to wash out the inside of the filter and remove any remaining dirt or debris. You may also want to use a filter cleaner to remove any stubborn stains or buildup.

6. Add new sand

Now that the filter is clean, you can add new sand. Pour the sand into the filter slowly, being careful not to let it spill over the sides. Use a funnel or the original sand scoop to help you pour the sand. You may also need to add a layer of pea gravel or a special filter sand before adding the new sand (check your manual for details).

7. Replace the valve

Once the sand is in place, you can replace the filter valve. Make sure the gasket is in place and screw the valve back onto the filter. Tighten the screws carefully to avoid damaging the gasket.

8. Backwash and rinse

With the valve back in place, you can now backwash and rinse the system. Turn on the pump and set the valve to the "backwash" position. This will flush out any remaining debris or particles. After a few minutes, switch the valve to the "rinse" position to clear out any remaining sand or debris.

9. Return to normal operation

Once you have completed the backwashing and rinsing process, you can return your system to normal operation. Set the valve to the "filter" position and turn on the pump. Check for any leaks or other issues before you start using the pool again.


Changing the sand in your Hayward pool filter can be a daunting task, but it's an important part of maintaining your pool. With these steps, you can change the sand easily and quickly without having to call in a professional. Be sure to follow the manufacturer's instructions and use the right type and amount of sand for your particular filter. With a little bit of effort, your pool will be clean and clear all summer long!


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