Swim Spa Pump Is Making Noise: Common Fixes

Have you ever noticed strange noises coming from your swim spa pump, like a loud buzzing or rattling sound? It’s a common problem that can be unsettling, especially when you rely on your swim spa for relaxation and exercise. But before you get too worried, know that this is usually something you can address quickly.

At Hydropool, we’ve helped countless swim spa owners resolve noise issues, and more often than not, the solution is simpler than you might think. From air bubbles to worn-out parts, there are several reasons why your pump might be making noise, and most of them can be fixed without much hassle.

In this article, we’ll walk you through the typical causes of pump noise and the steps you can take to fix the problem yourself or determine if it’s time to call in a professional.

Here’s what we’ll cover:

• What causes noise in your swim spa pump?
• How to troubleshoot and fix the noise yourself
• When to seek help from a professional

What Causes Noise in Your Swim Spa Pump?

Swim spa pumps can make a variety of noises, from a faint hum to loud banging or whistling. Understanding the root cause of the noise will help you determine the best way to fix it. Here are some of the most common reasons:

1. Air in the System
    If air gets trapped in the plumbing or pump, it can cause the pump to make a gurgling, bubbling, or whistling noise. This happens when air is sucked into the pump, often due to low water levels or a dirty filter.
2. Worn-out or Loose Parts
    Over time, components in your swim spa pump—such as the bearings, seals, or impellers—can wear down, causing them to make grinding or rattling noises. If your pump has been in use for a while, this is a common culprit.
3. Imbalanced Water Flow
    If there’s too much or too little water flow into the pump, it can lead to a “whining” or “screeching” sound. This could be caused by an obstruction in the plumbing or a malfunctioning valve.
4. Pump Cavitation
    This is a condition where the pump impeller spins faster than the water can flow into it, causing air bubbles to form and create a churning, popping sound. This often happens when the water level is too low or when the intake filters are blocked.

How to Troubleshoot and Fix the Noise Yourself

Before you call a professional, there are a few things you can try to troubleshoot and fix the noise yourself.

1. Check the Water Level
    Low water levels are one of the most common causes of pump noise. Make sure the water level in your swim spa is above the skimmer line and that the pump is fully submerged. If the water is low, top it up to the appropriate level.
2. Inspect and Clean the Filters
   A clogged or dirty filter can restrict water flow, which could cause your pump to make noise. Remove the filters and clean them thoroughly to ensure proper water flow. You can find tips on cleaning and maintaining your filters in our Learning Centre.
3. Bleed the Air from the System
    If you suspect air is trapped in the pump, you can bleed the system to release it. Look for the bleeder valve near the pump, and follow the instructions for releasing air. This should quiet the pump if air is the issue.
4. Check for Loose or Worn-out Parts
    Inspect the pump and surrounding components for any loose screws, bolts, or parts. Tighten any loose connections and check the impeller and bearings for wear. If any parts seem worn out or damaged, they may need to be replaced.

When to Call a Professional

If you’ve tried the above steps and the noise persists, it might be time to call in a professional. Here are some signs that indicate you need expert help:

• The noise continues after checking the water level, cleaning the filters, and bleeding the system.
• The pump is making an unusual grinding or screeching noise, which could signal a mechanical failure.
• You notice leaks or significant damage to the pump housing or parts.

If any of these apply, it's best to reach out to your local Hydropool retailer for assistance. They can inspect your swim spa, identify the issue, and provide the necessary repairs or part replacements.

Swim Spa Pump Making Noise?

A noisy swim spa pump doesn’t have to be a cause for panic. By identifying common causes like air in the system, worn-out parts, or imbalanced water flow, you can often fix the issue yourself and get back to enjoying your swim spa in peace.

Still hearing strange noises or need help with a more complicated issue? Reach out to your local Hydropool retailer for professional service: Find a Retailer.