how long should a pool filter run


Author: Poolking - Swimming Pool Equipment Manufacturer


Swimming pools are an excellent form of relaxation and a way to cool off on a hot summer day. But proper maintenance is essential to keep the pool clean and healthy. One important aspect of pool maintenance is the filter system. But how long should a pool filter run? In this article, we will answer this question and provide you with some tips on pool filter maintenance.

Why is a pool filter system important?

The pool filter system is essential to keep your swimming pool clear, sparkling and free from debris. It works by trapping dirt, leaves, and other impurities that enter the pool water. Filter systems keep the water clean and reduce the risk of harmful bacteria and algae growth.

How does a pool filter work?

The pool filter system usually consists of a pump, filter, and a motor. The pump circulates the water through the filter, and the motor provides the power for the pump. The filter then removes any debris from the water, returning clean water to the pool.

Types of pool filters

There are three main types of pool filters, Sand filters, Cartridge filters, and DE filters. Sand filters use sand to filter debris from the pool water, while cartridge filters use pleated filter paper. DE filters use a special type of powder called Diatomaceous earth.

How long should a pool filter run?

The recommended pool filter run time is eight hours per day. For optimum performance, it's best to run the filter system continuously, 24 hours a day, seven days a week. However, this may not be practical or affordable. Running the pool filter for at least 8 hours a day will keep the water clean and prevent the buildup of bacteria.

Factors that affect pool filter run time

Some factors will determine how long a pool filter system should run, including:

Pool size: A larger pool will require more filtration and, therefore, more runtime.

Usage: A pool that is frequently used will require more filtration.

Weather: Hot weather and frequent rainy days can require increased filtration.

Filter type: Cartridge and DE filters may require shorter runtime as they have better filtration than sand filters, which may require longer runtime.

How to maintain a pool filter system

Maintaining a pool filter system is essential to ensure that it continuously runs at peak efficiency. The following tips will help you maintain your pool filter system:

1. Regular cleaning: Dirt and debris will accumulate on the pool filter over time, reducing its efficiency. Regular cleaning will help to maintain the filter's efficiency, and this should be done at least once a month.

2. Replace filter media: Filter media like sand, cartridges, or Diatomaceous earth will eventually degrade and become less effective. Replace them as needed to ensure maximum filtration.

3. Check the pool water chemistry: Proper pool water chemistry will ensure that the filter system works correctly. Check the pH, chlorine, and Total Alkalinity regularly.

4. Check and clean the pump basket regularly: Debris will accumulate in the pump basket, reducing the pump's efficiency. Clean the pump basket regularly to keep the pump running efficiently.

5. Schedule regular maintenance: A professional pool technician should perform a comprehensive maintenance check at least once a year.


A pool filter system is essential to ensure clean, clear, and healthy pool water. Running the filter for at least 8 hours a day is recommended, but several factors can affect the runtime. Regular cleaning, replacing filter media when necessary, and checking pool chemistry regularly will maintain the filter system's efficiency. Proper maintenance will ensure that the filter runs continuously, which will make your pool enjoyable throughout the swimming season.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English