how to choose a pool filter


Author: PoolKing - Pool Sand Filter Manufacturers

How to Choose a Pool Filter

When it comes to owning a pool, having clean and clear water is paramount. A functioning pool filter is a key component in maintaining this. With so many options on the market, it can be overwhelming to decide which is the best for your particular pool. In this article, we will discuss the different types of pool filters available and what to consider when making your choice.

Types of Pool Filters

There are three main types of pool filters: sand, cartridge, and DE (diatomaceous earth). Each has its pros and cons, so let's break down the differences.

Sand Filters

Sand filters rely on a bed of sand to sift out debris from your pool water. Water is pumped through the sand, where it catches dirt and particles, and clean water is returned to the pool. These filters are easy to operate and relatively low maintenance, but they do require occasional backflushing to clean out the sand. Sand filters are best for residential pools as they are less expensive than other options.

Cartridge Filters

Cartridge filters use a pleated cartridge to trap debris as it passes through the filter. These filters are known for their ability to capture particles as small as 10 microns, making them a popular choice among pool owners. They are also low maintenance and straightforward to clean. Cartridge filters are best for smaller pools as they require more frequent cleaning and can become clogged with larger pools.

DE Filters

DE filters use a combination of grids and a powder-like substance made from fossilized diatoms to trap debris. These filters are the most efficient at filtering out smaller particles, making them a popular choice for public pools and spas. However, they require more frequent maintenance as the diatomaceous earth must be replaced regularly. DE filters are also the most expensive option.

What to Consider

Now that you know the different types of pool filters, it's time to consider what will work best for your particular pool. Here are some factors to consider.

Pool Size

The size of your pool will play a significant factor in choosing a pool filter. A larger pool will require a more significant filter to keep the water clean effectively.

Pool Usage

Consider how much you use your pool. If it's used frequently, you'll want a filter that can handle the strain of filtering out more debris.


Pool filters range in price, so you'll want to consider how much you're willing to spend. Remember, the initial investment may be higher for some filters, but the long-term maintenance costs may be less.


Some pool filter types will require more maintenance than others. Consider how much time and effort you're willing to put into maintaining your filter.

Ease of Use

Finally, it's important to consider how easy the filter is to use. Will you need to hire a professional to install it? Is it easy to clean? Consider your level of pool maintenance expertise when choosing a filter.


Choosing the right pool filter is an important decision that will affect the cleanliness and clarity of your pool water. By considering your pool size, usage, budget, maintenance needs, and ease of use, you can make an informed decision on which type of filter will work best for you. Whether you choose a sand, cartridge, or DE filter, remember to follow the manufacturer's directions and perform regular maintenance to keep your pool water sparkling clean.


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