When Is It Time To Replace Your Pool Filter Cartridge?

When Is It Time To Replace Your Pool Filter Cartridge?

25th Jul 2023

At Pool Parts Unlimited, we understand the importance of a well-maintained pool for a refreshing and enjoyable swim. As the leading year-roundpool and spa parts supplier , we're here to guide you through the signs indicating it's time to replace your pool filter cartridge. Ensuring optimal performance is crucial for crystal-clear water and a hassle-free swimming experience. Read on to discover the key indicators that signify it's time to upgrade your pool filter cartridge.


dirty pool

Decreased Water Quality

One of the most evident signs that your pool filter cartridge needs replacing is a decline in water quality. If you notice murky or cloudy water despite regular maintenance, it's likely that your filter cartridge is clogged with dirt, debris, and other impurities. As the cartridge becomes saturated with these particles, it becomes less effective at trapping them, resulting in poor water quality.

pool filtration system

Increased Pressure in the Filtration System

A significant increase in pressure within your pool's filtration system is another strong indication that your filter cartridge needs attention. When the cartridge becomes clogged, it restricts the flow of water, causing the filter pump to work harder, which causes increased pressure readings on the pool equipment's pressure gauge. If routine cleaning fails to resolve the issue, it's time to replace the cartridge.

swimming pool

Longer Filtration Cycles

If you observe that your pool's filtration cycles have become noticeably longer, it may indicate that your filter cartridge is reaching the end of its lifespan. Over time, as the filter becomes dirtier, it requires more time to trap and remove impurities from the water. If you find yourself running the filter for extended periods without resolving the water clarity issues, consider replacing the cartridge.

man checking pool filter

Wear and Tear

Inspecting the physical condition of your filter cartridge is crucial in determining whether it needs replacement. Over time, the filter material can deteriorate, tear, or develop holes, allowing impurities to bypass the filter. If you notice any visible signs of wear and tear, it's best to replace the cartridge to ensure efficient filtration.


As the premier pool and spa parts provider year-round, Pool Parts Unlimited is committed to ensuring your swimming pool is clean, clear, and operating at its best. By recognizing the signs that indicate it's time to replace your pool filter cartridge, you can stay ahead of potential issues and maintain a sparkling pool year-round. Trust in Pool Parts Unlimited to provide you with high-quality replacement cartridges and other pool maintenance essentials. Shop our collection today!

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