How often should the sand in a pool sand filter be changed?
Seeing cloudy water or clumped sand in your pool? This could be a sign that the filtration media – rather than the filter itself – requires replacement.
Find out how often you should be changing sand in a pool filter and when you should consider replacing the filtration media early from the experienced team of water treatment engineers at Chemsol.
How long does sand last in a pool filter?
Sand media in a pool filter can last anywhere between 1-7 years, depending on various factors, such as it’s application, bather load, and level of operation.
How often do you change sand in a pool filter?
The below table outlines when to change the sand in a pool filter and how various factors, such as bather load and operation level, impact this recommended lifespan:
| Factor/Pool type | Commercial | Residential |
|---|---|---|
| Sand lifespan | One year | 3-7 years |
| Bather load | Usually high volume, daily use | Usually low volume, occasional use |
| Operation level | Continuous | Intermittent and seasonal |
| Contaminants (sunscreen, sweat, cosmetics) | Typically, high | Typically, low to moderate |
If it’s time to change the sand in your pool filter, whether residential or commercial, why not take a look at our comprehensive guide to sand filtration media replacement?
Alternatively, you can also arrange a no-obligation consultation with Chemsol Group to discuss professional filtration media replacement services carried out by our experienced engineers.
When to change the sand in a pool filter
While annual sand filtration media replacement is a good rule of thumb for commercial swimming pools, there are some circumstances where the sand may require changing earlier.
Common signs that you should consider changing the sand in the commercial pool filter include:
Sand clumping
The high buildup of oils, fats, and other organic materials can result in sand clumping. As a result, the water bypasses the sand filtration and retains unwanted dirt and debris, channelling it back into the water.
More frequent backwashing
Backwashing – the act of flushing out dirt and debris – is a common and essential part of cleaning the pool filter. However, if the filter requires backwashing every couple of days instead of every week or so, this could be sign that the sand needs to be changed.
Cloudy pool water
Cloudy and dull pool water can be another sign that your filtration media requires replacement. However, you should first check that you’re using the right balance of chemicals and filtration cycles to ensure this issue isn’t being caused by an external factor.
Unsure whether an issue with your swimming pool is being caused by old sand? There are many other problems that may seem related to this issue, such as filter media migration, that are actually caused by things like broken laterals on a pool filter.
Speaking to a professional swimming pool repair and maintenance team, like Chemsol Group, can ensure accurate identification of the cause of any problems you might be experiencing, supporting a swifter and more cost-effective solution.
How Chemsol can help
Whether you require help identifying when to change the filtration media or need professional support replacing it in your commercial pool, please don’t hesitate to speak to our expert water treatment engineers.
Backed by years of invaluable experience installing, maintaining, and repairing commercial swimming pools and spas, you can trust our team to provide you with reliable guidance and support.
We can even help you to make the switch from sand filtration media to a more efficient AFM® and deep bed alternative. Interested in learning more?
To book a consultation, request a quote for scheduled maintenance, or discuss your requirements in more detail, talk to Chemsol’s team.