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how often to replace pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

5 Signs Your Pool Filter Needs to be Replaced

A functional pool filter is integral to the smooth operation of your swimming pool. A pool filter clears debris, dirt, and bacteria from your pool water to keep it clean and healthy. While pool filters are durable and can last for years, they do need periodic maintenance, and ultimately, they need to be replaced. Here are five signs that it’s time to replace your pool filter.

1. Your pool water is cloudy despite chemical treatments

Chemical treatments help to kill bacteria and algae in your pool water, but they won’t remove debris or dirt. If you notice that your pool water is still cloudy despite adding chemicals, it may be time to replace your pool filter. As the filter starts to wear out and clog over time, it becomes less efficient, and it won’t be able to clear the water as effectively as it once did. If your pool filter hasn’t been replaced in five to seven years, it may be time for a new one.

2. It’s difficult to remove debris from your pool

If you notice that it’s becoming more difficult to clean debris from the bottom of your pool, it may be time to replace your filter. An old and clogged filter won’t be able to move water as effectively, so it won’t be able to maintain water flow, which makes it difficult to skid debris from your pool water. The problem may also lie with a broken filter valve or busted pump, but it’s best to check your filter first.

3. Your pool water pressure is low

Low water pressure is a clear indication that your filter isn’t working properly. Low water pressure is caused by clogging that occurs when the filter is old and worn out. Regular cleaning can help to improve the water pressure, but if it persists, it may be time to replace the filter. Remember to check for leaks or other plumbing issues before replacing the filter.

4. You hear a lot of strange noises

Strange sounds coming from your filter could point to several problems, including loose parts, cracks, or worn-out bearings. A combination of loud humming or grinding noise is a clear indication that the filter motor is on the verge of breaking down. It might be time to replace the entire unit if the damage is extensive.

5. Your energy bills are higher than average

If your energy bills suddenly increase or you notice that your pool filter is running more than usual, you might have a clogged or inefficient filter. Older pool filters tend to run far less efficiently, which could increase your pool’s energy consumption. As the filter strains to process debris and bacteria, it needs more energy to accomplish the task. Ultimately, a new filter could lower your energy bills and improve the overall efficiency of your pool system.


Replacing your pool filter may seem like a daunting task, but it’s essential for maintaining clean and healthy pool water. Regular maintenance and cleaning are necessary, but don’t forget to keep an eye out for signs that your filter may need to be replaced. If your pool water is cloudy, there’s low water pressure, strange noises, or your energy bills are higher than usual, it may be time to replace your filter. Remember to contact a professional if you’re unsure how to replace the filter or if you’re experiencing other pool problems.


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