how often should you change a pool filter cartridge


Author: Poolking - Swimming Pool Equipment Manufacturer

How Often Should You Change a Pool Filter Cartridge?

Swimming pools are a great addition to any home during the hot summer months. However, maintaining your pool and keeping it clean can be tricky without the right knowledge. One of the most important components of your pool's filtration system is its filter cartridge. A pool filter cartridge helps to remove debris, leaves, dirt, and other particles that can clog up your pool's plumbing and cause damage to the pump.

But how often should you change a pool filter cartridge? What factors should you consider when determining the optimal replacement schedule? In this article, we'll dive into the details of pool filter cartridges and provide tips on how to determine when it's time to change your filter.

Understanding Pool Filter Cartridges

Pool filter cartridges are essentially cylindrical devices designed to fit inside your pool's filter system. The cartridge is made up of a pleated material, typically polyester or polypropylene, which traps debris and other particles that can contaminate your pool water.

Pool filter cartridges come in various sizes, and their lifespans depend on several factors, such as the size of the pool and the frequency of use. When properly maintained, a pool filter cartridge can last several years, but at some point, it will need to be replaced.

Factors That Determine Pool Filter Cartridge Lifespan

Several factors can impact the lifespan of a pool filter cartridge. These factors include:

Pool size and frequency of use: The larger the pool, the more frequent filtration is required, which can potentially decrease the lifespan of the pool filter cartridge.

Pool Location: If your pool is located near trees or other vegetation, you may need to change your filter cartridge more often because of the increased amount of debris that could end up in your pool.

Chemical levels: Pool chemicals like chlorine can damage pool filter cartridges over time, which can shorten their lifespan.

Water quality: The quality of your pool water can also shorten the lifespan of your filter cartridge. If your water is imbalanced, it can cause the filter cartridge to deteriorate more quickly.

To determine how often you should change your pool filter cartridge, you need to consider each of these factors and monitor your pool's condition regularly.

Signs It's Time to Change Your Pool Filter Cartridge

To ensure that your pool is always clean and healthy to swim in, it's essential to recognize the signs that it's time to replace your filter cartridge. Here are five signs that indicate it's time to replace your pool filter cartridge:

1. Pool water is cloudy: If you notice that your pool water is cloudy, it could be a sign that your filter cartridge is clogged with debris and needs to be replaced.

2. Decreased water flow: If you notice that your pool's water flow has significantly decreased, it could be because of a clogged filter cartridge.

3. Increased chemical use: If you find yourself having to use more pool chemicals than usual to maintain water quality, it could be a sign that your filter cartridge is no longer functioning correctly.

4. Damaged filter: If you notice any physical damage to your filter cartridge, such as tears, rips, or holes, it's time to replace it.

5. Increased frequency of cleaning: If you find that you need to clean your pool filter cartridge more often than usual, it's likely that its lifespan has come to an end.

Maintaining Your Pool Filter Cartridge

To extend the lifespan of your pool filter cartridge and ensure that your pool stays clean and healthy, it's essential to maintain your pool's filtration system properly. Regular cleaning and maintenance can help extend the lifespan of your filter cartridge and prevent any potential damage to your pool's plumbing system.

Here are some tips for maintaining your pool filter cartridge:

1. Clean your cartridge regularly: Regularly washing your pool filter cartridge with a garden hose can help remove dirt and debris that could clog the filter and reduce its efficiency.

2. Balance your chemical levels: Maintaining balanced chemical levels can help prevent damage to your filter cartridge and extend its lifespan. Monitor your water quality regularly and adjust your chemical levels as needed.

3. Treat your filter cartridge with a filter cleaner: Using a filter cleaner can help break down any stubborn dirt and debris that may be stuck to your filter cartridge.

4. Replace your filter cartridge: It's essential to replace your filter cartridge on schedule, depending on your pool size, frequency of use, and other factors that impact the lifespan of the filter.


Maintaining your pool's filtration system is crucial for keeping your pool clean and healthy. The pool filter cartridge is a critical component that needs proper maintenance to extend its lifespan and keep your pool sparkling clean. By understanding the factors that impact filter cartridge lifespan and monitoring your pool's condition, you'll be able to determine when it's time to replace your pool filter cartridge and keep your pool in excellent condition for years to come.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English