Troubleshoot Your Noisy Water Cooler: 5 Easy Fixes

Water coolers, particularly All-in-One (AIO) liquid coolers, can make various noises due to several reasons. These noises can range from rattling or bubbling sounds to weird noises coming from the pump. Here, we will discuss the possible causes and solutions for these noises in detail.

1. Rattling Noises

Rattling noises in a water cooler usually indicate a loose component or a problem with the fan. To diagnose the issue, you should first confirm if the noise is coming from the pump or the fan. You can do this by unplugging or turning your fans to 0% duty cycle to isolate the noise. If the noise persists, it may be due to loose mounting hardware or a failing fan.

Solution

To fix rattling noises, you should check the mounting hardware and ensure everything is tightened correctly. This includes the screws that hold the pump/block assembly to the CPU, the screws that hold the radiator in place, and any other mounting points. Ensure that all screws are tight and there is no play in the components.

If the noise is coming from the fan, you may need to replace it. Fans can develop bearing issues over time, leading to rattling noises. You can try lubricating the fan bearings with a small amount of light machine oil, but if the noise persists, it’s best to replace the fan.

2. Bubbling Noises

Why Is My Water Cooler Making Noise

Bubbling noises in a water cooler are typically caused by air bubbles trapped in the cooling loop. These air bubbles can cause noise when the impeller is moving air and coolant, especially during high-performance tasks like gaming.

Solution

To eliminate bubbling noises, you should ensure that at least a portion of the radiator is mounted higher in your case than the pump. This will allow the air bubbles to move towards the reservoir tanks in the radiators, rather than getting stuck in the pump. Ideally, the radiator should be mounted at the top of the case, with the pump positioned below it.

Additionally, you can lightly shake your radiator to help the tiny air bubbles move and stick to the reservoir tanks. This can be done by gently rocking the case back and forth or tapping the radiator with your hand. Be careful not to apply too much force, as this could damage the components.

3. Weird Noises from the Pump

Weird noises from the pump can be caused by various factors, including air bubbles, failing bearings, or a dead pump. If the noise sounds like an old ceiling fan with something wrong with its bearings, it may be due to failing bearings or a dead pump.

Solution

If the noise is due to air bubbles, you can follow the steps mentioned above to eliminate them. However, if the noise is due to failing bearings or a dead pump, you may need to replace the pump or the entire AIO liquid cooler.

To determine the cause of the pump noise, you can try the following:

  1. Isolate the Pump: Unplug the fans and other components from the AIO cooler, leaving only the pump connected. This will help you identify if the noise is coming specifically from the pump.
  2. Check Pump Speed: Use a system monitoring software like HWMonitor or NZXT CAM to check the pump’s RPM. If the pump is not spinning at the expected speed, it may be failing.
  3. Replace the Pump: If the pump is the source of the noise and it’s not spinning correctly, you’ll need to replace the pump or the entire AIO cooler. Attempting to repair a failing pump is generally not recommended, as it can be difficult and may not resolve the issue.

Technical Specifications

When dealing with water cooler noises, it’s essential to understand the technical specifications of the cooler. For instance, the iBUYPOWER 240mm Addressable RGB Liquid Cooling System has a 240mm radiator and a pump that can fail prematurely, causing loud noises. Similarly, the Cooler Master ML120L RGB AIO cooler can make weird noises due to air bubbles or failing bearings.

The iBUYPOWER 240mm Addressable RGB Liquid Cooling System has the following technical specifications:

  • Radiator Size: 240mm
  • Pump Dimensions: 73mm x 73mm x 57mm
  • Pump Speed: 2,800 – 3,200 RPM
  • Noise Level: 16 – 30 dBA

The Cooler Master ML120L RGB AIO cooler has the following technical specifications:

  • Radiator Size: 120mm
  • Pump Dimensions: 62mm x 62mm x 38mm
  • Pump Speed: 800 – 2,400 RPM
  • Noise Level: 6 – 30 dBA

Knowing these technical details can help you better understand the potential issues and solutions for your specific water cooler model.

DIY Solutions

If you’re experiencing water cooler noises, there are several DIY solutions you can try. For instance, you can use light machine oil to lubricate the fans if you suspect they’re making noise due to dry bearings. Additionally, you can ensure that at least a portion of the radiator is mounted higher in your case than the pump to help eliminate air bubbles.

Here are some additional DIY solutions you can try:

  1. Bleed the Cooling Loop: If you suspect air bubbles are causing the noise, you can try bleeding the cooling loop. This involves tilting and shaking the case to help the air bubbles move towards the radiator’s reservoir tanks.
  2. Check for Leaks: Inspect the water cooler for any signs of leaks, as this can also contribute to noises. Look for any moisture or water around the pump, radiator, or tubing connections.
  3. Clean the Cooling System: Over time, the cooling system can accumulate dust and debris, which can affect the performance and cause noises. Carefully clean the radiator, fans, and other components using a soft brush or compressed air.
  4. Replace Thermal Paste: If the noise is accompanied by high CPU temperatures, the issue may be related to the thermal paste between the CPU and the water block. Try reapplying a fresh layer of high-quality thermal paste.

Remember, when attempting any DIY solutions, always take proper safety precautions and refer to the manufacturer’s instructions to avoid damaging your water cooler or other components.

References:
Corsair: How to Fix Rattling or Bubbling Sounds in AIO Cooler
Tom’s Hardware: AIO Cooler Pump is Making Weird Noise, How Do I Resolve This?
YouTube: How to Fix Rattling Noises in AIO Liquid Coolers
Reddit: Loud Noise Coming from Liquid Cooler Fan
Corsair: How to Fix Rattling or Bubbling Sounds in AIO Cooler