Installing a pool filtering system is a complex task that requires careful planning and attention to detail. A poorly installed filtration system can lead to a range of problems, from cloudy pool water to high maintenance expenses. To ensure a successful installation, it is helpful to have the support of an experienced professional who knows pool filtering systems.

 This article discusses the most common mistakes pool owners make when installing filtration systems, and how to avoid them.

Understanding Pool Filtering System Importance

Understanding the role of the filtration system in a swimming pool is the first step in avoiding mistakes during installation. The filtration system is the most relying on part of a swimming pool. It keeps the water clean by removing debris and impurities, prevents algae and bacteria growth, and maintains chemical balance. The pool filtering system is responsible for 80% of swimming water’s healthy properties. As such, it is essential to choose the right filtration system and to make sure it is properly installed and maintained to ensure the swimming pool is kept safe and clean.

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Consulting a pool filtration expert

Consulting a pool filtration expert is essential before selecting and installing a filtration system. This professional has the knowledge and experience to assess the specific requirements of your pool and recommend the most suitable system for your needs.

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An expert will be able to avoid common mistakes such as incorrect system placement, inappropriate installation of piping, and ensuring that everything is appropriately set up for easy maintenance.

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Mistake #1 : Choosing The Wrong Filter

The type of filter you choose for your pool is an important decision. Water quality and pool maintenance expenses can be significantly affected by this factor. The three main types of pool filters are sand, cartridge, and DE (Diatomaceous Earth). They each have their advantages and disadvantages, as well as being suited to specific circumstances.

A common mistake is selecting a filter that doesn’t fit your pool’s size or needs. A sand filter, for example, may not be an ideal choice for a large pool or one that is frequently used, since it may require extensive maintenance, both in terms of water and time. Similarly, a cartridge filter may not be the best choice for pools with a high debris rate, as it may need to be cleaned frequently.

Mistake #2 : Improper Filter Installation

Incorrect installation of the filter is another common mistake when installing a pool filtering system. Installing a pool filter is not easy. It requires a precise understanding of the manufacturer’s instructions, the use of appropriate tools, and a certain level of technical expertise.

A poorly installed system can result in many issues, including inefficient filtration, water leaks, premature wear of components, and even damage to the pump and filter.

Mistake #3 : Sizing the filtration system wrong

The third common error when installing a pool filtration system is failing to configure the system correctly. Performing this step is critical to ensuring optimum filtration and efficient circulation of water. 

Setting the system correctly involves determining the proper flow rate for the system, the correct size and type of filter, and the correct size and type of pump. It is possible to experience serious, long-term consequences if the system is not sized correctly, including reduced efficiency, poor water clarity, and increased maintenance expenses.


To get the most benefit from the pump, it’s imperative to consider the necessary power supply for the pump. In addition, it’s essential to consider the distance between the pool and the pump room.

For minimal pressure losses in the pool’s hydraulic circuit, experts recommend locating the plant room close to the pool.

To avoid these losses, you should:

You’d lose pressure in the pool’s hydraulic circuit if you placed your pump too far away from the pool.

Mistake #5 : Installing A Filtering System Without Considering Pool Waterline

The filtration pump of a swimming pool can never run dry. That’s why its location relative to the pool waterline is crucial.

There are two options available :

  • Place the pump above the waterline.
  • Put the pump below the waterline.

Installing the filtration pump below the waterline ensures that it will never be deprived of water, making it the optimal location for the pump. However, the circuit will be constantly under pressure. Valves must therefore be installed in the hydraulic circuit to control water pressure and isolate the pump without draining water from the pool.

Positioning the pump above the water level entails the risk of it becoming unprimed or sucking in air. The use of a self-priming pump and the maintenance of a perfect hydraulic circuit seal is therefore imperative in this situation.

Can I Install The Pool Filtration System Myself?

Installing a pool filtration system may seem daunting. However, even if you lack technical expertise, following a detailed filtration diagram can make the task of setting up a pool filtering system not only manageable but even enjoyable. Plus, it can be a rewarding experience, as it can offer the peace of mind that comes with knowing the filtration system was designed and implemented with precision.

It may be helpful along the installation process to have a detailed filtration layout. It will cover key areas such as filter installation and fitting the filtration system to the pump and pipes that come from the pool. Furthermore, it illustrates how to connect optional equipment, such as a heating system or an automatic disinfection system. This document also provides valuable information about the calibration of pumps and filters, as well as safety precautions that should be taken when installing a filtration system.

How To Avoid Mistakes?

Getting informed before installing a pool filtering system is the key to avoiding these mistakes. You should familiarize yourself with the different types of filters available and determine which would be most suitable for your pool. Before setting up the filter, ensure that you have the appropriate tools and read the manufacturer’s instructions carefully. The final step is to properly calibrate the filtration system so that it will be as effective and durable as possible.

If you are not comfortable installing the filtration system yourself, you should consider contacting a professional. Professional pool installers possess the experience and expertise necessary to install the filtration system correctly and avoid common mistakes.


In short, pool filtering system installation requires careful attention and preparation to avoid common mistakes. Selection of the filtration pump and its location, filter choice and fittings, plumbing, etc., are all critical parts of the system. Every detail matters and can have a significant impact on the performance and efficiency of your filtration system.

If you will be carrying out the installation yourself, it is imperative to follow a detailed filtration system drawing. It is also important to be patient and precise in the process. Keep in mind that the main objective is to maintain clear, clean and healthy pool water. Adopting proper installation procedures and avoiding common mistakes are the only ways to achieve this goal.

Regardless of whether you choose to install your pool filtration system yourself or hire a professional, you must understand the importance of every aspect of the installation process. The correct installation of your pool will enable you to maximize your enjoyment of it and minimize problems.

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