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how to clean pentair pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Clean Pentair Pool Filter: A Comprehensive Guide

Having a pool in your backyard is a great way to enjoy the outdoors and get some exercise. However, like anything else, your pool requires routine maintenance to ensure it stays clean and functional. One of the most important parts of a pool’s maintenance is cleaning its filter. In this article, we will discuss how to clean Pentair pool filter to ensure it stays in top condition.

Subheading 1: Understanding Your Pentair Pool Filter

Before you can begin cleaning your Pentair pool filter, it’s important to understand its basic function. The pool filter is responsible for capturing and removing debris from your pool water. This can include everything from leaves and bugs to smaller particles like dirt and sand.

There are three main types of pool filters: sand, cartridge, and diatomaceous earth (DE). Pentair manufactures all three types of filters, so it’s important to know which type you have before attempting to clean it. Each type of filter has its own unique cleaning process.

Subheading 2: When to Clean Your Pentair Pool Filter

Knowing when to clean your Pentair pool filter is just as important as knowing how to clean it. If you wait too long between cleanings, your filter won’t work efficiently and could even cause damage to your pool’s pump.

Most pool experts recommend cleaning your filter every 6 months to a year, depending on how often you use your pool. You should also inspect your filter regularly and clean it if you notice a decrease in water flow or pressure.

Subheading 3: How to Clean a Sand Pentair Pool Filter

Sand filters are the most popular type of pool filter and are relatively easy to clean. The first step is to turn off your pool’s pump and remove the filter’s lid. Next, use a hose to rinse away any debris from the filter’s perforations.

After rinsing, it’s time to backwash the filter. This is done by turning the pool’s pump back on and redirecting the pool’s water flow through the filter in reverse. You will want to let it run for about 2-3 minutes or until the water is clear.

Finally, turn off the pump again and switch the pool’s valve back to the normal position. Replace the filter’s lid and you’re done!

Subheading 4: How to Clean a Cartridge Pentair Pool Filter

Cartridge filters require a bit more work to clean than sand filters but are still manageable. Begin by turning off the pool’s pump and removing the filter. Next, use a hose to remove any debris from the filter’s exterior.

Once the exterior is clean, it’s time to clean the filter’s cartridges. You can do this by using a cartridge cleaner or a solution of muriatic acid and water. Soak your cartridges in one of these solutions for 6-8 hours and then rinse thoroughly with a hose.

Finally, allow the cartridges to dry completely before reinstalling them in your pool’s filter housing.

Subheading 5: How to Clean a DE Pentair Pool Filter

Diatomaceous earth filters are the most expensive type of pool filter and require the most maintenance. To clean a DE Pentair pool filter, first, turn off the pool’s pump and remove the filter from its housing.

Next, remove the filter’s manifold and soak it in a solution of muriatic acid and water for about 30 minutes. Rinse it off thoroughly and set it aside.

Then, remove the filter’s grids and soak them in a solution of DE filter cleaner and water for about 30 minutes. Rinse off the grids and set them aside to dry.

Finally, put the manifold and grids back into the filter housing and add fresh DE powder. Reinstall the filter and turn on the pump.


Cleaning your Pentair pool filter is essential to maintaining a clean and healthy pool. While the process may seem intimidating at first, it’s actually quite simple once you know what you’re doing. By following the above steps, you can ensure that your filter stays in top condition and that you’ll enjoy your pool for years to come!


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