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how often should a pool filter run


Author: Poolking - Swimming Pool Equipment Manufacturer

How Often Should a Pool Filter Run?

Swimming pools can be an amazing addition to any home. Whether it's for relaxing, exercising, or entertainment, a swimming pool can offer a lot of benefits. But owning a swimming pool comes with a lot of responsibilities, one of which is maintaining it. A pool filter plays a crucial role in keeping the pool water clean and healthy. But the question is, how often should a pool filter run? In this article, we will discuss everything you need to know about the frequency of pool filter operation.

What Does a Pool Filter Do?

Before we talk about how often a pool filter should run, let's first understand what a pool filter does. In simple terms, a pool filter removes impurities and debris from the pool water. The water is circulated through the filter, which catches any particles that are too large to pass through. This can include leaves, dirt, bugs, hair, and other contaminants. The filter then releases the clean water back into the pool.

Why Is Pool Filter Maintenance Important?

Maintaining your pool filter is essential for several reasons. Firstly, a dirty or clogged pool filter can put a strain on your pool pump, which can eventually lead to a breakdown. Secondly, a dirty filter can affect the quality of your pool water. If the filter is not clean, it won't be able to remove all the contaminants, which can result in cloudy and unhealthy water. Lastly, a well-maintained pool filter can help reduce your pool's operating costs. A clean filter means your pool pump doesn't have to work as hard, which can save you money on energy bills.

How Often Should You Run Your Pool Filter?

Now let's get to the main question - how often should you run your pool filter? The answer depends on several factors, including the size of your pool, the type of filter you have, and how often the pool is used. However, as a general rule of thumb, you should run your pool filter for at least 8 hours a day. This will ensure that all the water in your pool is circulated through the filter at least once a day. If your pool is used frequently, you may need to run your filter for longer periods or even 24/7.

However, there are some exceptions to this rule. For instance, if you have a D.E. filter, you may not need to run it for as long as 8 hours a day. D.E. filters are known for their excellent filtration capabilities, so they can clean the water faster than other types of filters. However, even if you have a D.E. filter, it's still a good idea to run it for at least 6 hours a day to ensure optimal performance.

Another factor to consider is the weather. If you live in an area with a lot of dust, pollen, or other outdoor pollutants, you may need to run your filter for longer periods to keep up with the demand. Similarly, if you experience heavy rains or storms, you should run your filter for a few extra hours to clean up any debris that may have entered the pool.

How to Know If Your Pool Filter Needs Cleaning?

Cleaning your pool filter is just as important as running it. Over time, the filter can become clogged with debris, which can affect its ability to clean the water. So, how do you know if your pool filter needs cleaning? Here are some signs to look out for:

- The pool water looks cloudy or murky.

- The flow of water from the pool returns has decreased.

- The pressure on the filter gauge is higher than usual.

- The filter is visibly dirty or clogged.

If you notice any of these signs, it's time to clean your pool filter. This can be done by backwashing or cleaning the filter cartridges, depending on the type of filter you have.


A pool filter is an essential part of your swimming pool's maintenance. Running your filter for at least 8 hours a day is a good starting point, but the actual frequency may vary depending on several factors. Keeping your filter clean and well-maintained will not only ensure optimal performance but also save you money on your operating costs. So, make sure to check your filter regularly and clean it when necessary to enjoy crystal clear pool water all season long.


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