how often should pool filter be cleaned


Author: Poolking - Swimming Pool Equipment Manufacturer

Are you a proud pool owner? Taking care of your pool is essential for its longevity and your enjoyment. One of the primary components of your pool system is the filter, which keeps the water clean and clear. But do you know how often you should clean your pool filter?

In this article, we answer this common question that pool owners often ask. We will discuss the factors that determine the frequency of filter cleaning, and the signs that indicate when it’s time to clean or replace your pool filter.

What determines the frequency of filter cleaning?

Various factors affect the frequency of filter cleaning, including the size of your pool, the type of filter, and the level of pool usage. A general rule of thumb is that you should clean your pool filter every two weeks, but this may vary depending on the following factors.

Pool size

The larger your pool, the higher the volume of water to filter, and the more debris it collects. Generally, larger pools require more frequent filter cleaning than smaller ones.

Type of pool filter

Three main types of pool filters include sand, cartridge, and diatomaceous earth (DE). The cleaning frequency differs between them. Cartridge filters require frequent cleaning because they have a relatively small surface area. Sand filters are low maintenance and require minimal cleaning, while DE filters require backwashing and regular replacement of DE powder.

Pool usage

The more people use your pool, the more debris it collects, and the more frequently you should clean the filter. If you host frequent pool parties, you need to clean your filter more frequently.

Environmental factors

If you live in an area that experiences high winds, storms, or a lot of rain, you may need to clean your pool filter more frequently. This is because these environmental factors increase the amount of debris that lands in your pool.

Signs that your pool filter needs cleaning

Not cleaning your pool filter regularly can lead to various problems, including cloudy water, high energy bills, and equipment damage. Therefore, it is essential to know the signs that indicate when it’s time to clean or replace your pool filter.

Decreased water flow rate

If you notice that the water flow rate in your pool has decreased, it is probably due to a dirty pool filter. The filter may be clogged with debris, reducing the amount of water that flows through.

Dirty or cloudy water

A pool filter’s primary function is to keep your pool water clean and clear. If your filter is dirty, it won’t work effectively, causing your water to appear cloudy or dirty. In some cases, you may even notice visible debris floating in the water.

Higher energy costs

If your pool filter is dirty, it has to work harder to filter the water, leading to higher energy costs. A clean filter allows water to flow freely, reducing the filter's energy consumption.


Cleaning your pool filter regularly is crucial for maintaining your pool’s water quality and prolonging your pool equipment’s lifespan. The frequency of filter cleaning depends on various factors, such as the pool size, filter type, pool usage, and environmental factors. Keeping an eye out for signs that your filter needs cleaning, such as reduced water flow rates, dirty or cloudy water, and high energy bills, can help you determine when to clean or replace your filter.


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