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What causes unusual swimming pool pump noise?

Spring’s a busy time here at Gibbons, especially when it comes to swimming pool pumps. For the sales department, there’s always an influx of orders for new installations or replacements, while the team in our rewinds workshop are busy repairing pool pumps ready for summer.

Of all the enquiries we receive at this time of year, one of the most common questions we get asked is: “Why is my swimming pool pump making an unusual noise?” Here are a few of the most typical causes:


This noise indicates that your pump isn’t seated properly on its base, so be certain it’s properly and securely positioned. Placing a piece of rubber beneath the motor can help suppress noise.


Sometimes compared with the sound of marbles moving around the pump, a clattering noise is often caused by cavitation. This occurs when the pump has insufficient water and impeller rotates too quickly, beating the air molecules out of the water. Ensure the pump isn’t oversized and check the filter and impeller for blockages.

Rumbling or screeching

These noises mainly point to bearing wear, which is a familiar issue. Any well-used swimming pool pump will need to have bearings change eventually, so contact a trusted provider such as Gibbons to have this carried out.

If your swimming pool pump – or other type of pump, for that matter – is making abnormal noises, contact the experts at Gibbons and we’ll help you get to the bottom of it. Call 01621 868138 or email and one of our friendly team will be happy to help.

Pumps & Controls

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